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git01.mediatek.com / haproxy / 57cd3e46b9cc990e8aae538960a72ceabc49db6e / . / src / proto_http.c
blob: 64de612d483db0e7c8bd34ae2172a02e71a64851 [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
2798 * s->target which is supposed to already point to the stats applet.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2799 */
2800int http_handle_stats(struct session *s, struct channel *req)
2801{
2802 struct stats_admin_rule *stats_admin_rule;
2803 struct stream_interface *si = s->rep->prod;
2804 struct http_txn *txn = &s->txn;
2805 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2806 struct uri_auth *uri_auth = s->be->uri_auth;
2807 const char *uri, *h, *lookup;
2808
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2809 memset(&si->appctx.ctx.stats, 0, sizeof(si->appctx.ctx.stats));
2810 si->appctx.ctx.stats.st_code = STAT_STATUS_INIT;
2811 si->appctx.ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2812
2813 uri = msg->chn->buf->p + msg->sl.rq.u;
2814 lookup = uri + uri_auth->uri_len;
2815
2816 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2817 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2818 si->appctx.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2819 break;
2820 }
2821 }
2822
2823 if (uri_auth->refresh) {
2824 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
2825 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2826 si->appctx.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2827 break;
2828 }
2829 }
2830 }
2831
2832 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
2833 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2834 si->appctx.ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2835 break;
2836 }
2837 }
2838
2839 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2840 if (memcmp(h, ";st=", 4) == 0) {
2841 int i;
2842 h += 4;
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2843 si->appctx.ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2844 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
2845 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2846 si->appctx.ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2847 break;
2848 }
2849 }
2850 break;
2851 }
2852 }
2853
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2854 si->appctx.ctx.stats.scope_str = 0;
2855 si->appctx.ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2856 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2857 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
2858 int itx = 0;
2859 const char *h2;
2860 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
2861 const char *err;
2862
2863 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
2864 h2 = h;
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2865 si->appctx.ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2866 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
2867 itx++;
2868 h++;
2869 }
2870
2871 if (itx > STAT_SCOPE_TXT_MAXLEN)
2872 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2873 si->appctx.ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2874
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2875 /* scope_txt = search query, si->appctx.ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2876 memcpy(scope_txt, h2, itx);
2877 scope_txt[itx] = '\0';
2878 err = invalid_char(scope_txt);
2879 if (err) {
2880 /* bad char in search text => clear scope */
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2881 si->appctx.ctx.stats.scope_str = 0;
2882 si->appctx.ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2883 }
2884 break;
2885 }
2886 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2887
2888 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2889 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2890 int ret = 1;
2891
2892 if (stats_admin_rule->cond) {
2893 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2894 ret = acl_pass(ret);
2895 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2896 ret = !ret;
2897 }
2898
2899 if (ret) {
2900 /* no rule, or the rule matches */
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2901 s->rep->prod->appctx.ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2902 break;
2903 }
2904 }
2905
2906 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2907 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2908 if (si->appctx.ctx.stats.flags & STAT_ADMIN) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2909 if (msg->msg_state < HTTP_MSG_100_SENT) {
2910 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2911 * send an HTTP/1.1 100 Continue intermediate response.
2912 */
2913 if (msg->flags & HTTP_MSGF_VER_11) {
2914 struct hdr_ctx ctx;
2915 ctx.idx = 0;
2916 /* Expect is allowed in 1.1, look for it */
2917 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2918 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2919 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2920 }
2921 }
2922 msg->msg_state = HTTP_MSG_100_SENT;
2923 s->logs.tv_request = now; /* update the request timer to reflect full request */
2924 }
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2925 s->rep->prod->appctx.st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2926 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2927 else {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2928 si->appctx.ctx.stats.st_code = STAT_STATUS_DENY;
2929 s->rep->prod->appctx.st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]2930 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2931 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2932 else {
2933 /* So it was another method (GET/HEAD) */
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2934 s->rep->prod->appctx.st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2935 }
2936
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2937 s->task->nice = -32; /* small boost for HTTP statistics */
2938 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2939 s->rep->prod->appctx.st1 = s->rep->prod->appctx.st2 = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2940 return 1;
2941}
2942
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2943/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
2944 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
2945 */
2946static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
2947{
2948#ifdef IP_TOS
2949 if (from.ss_family == AF_INET)
2950 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2951#endif
2952#ifdef IPV6_TCLASS
2953 if (from.ss_family == AF_INET6) {
2954 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
2955 /* v4-mapped addresses need IP_TOS */
2956 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2957 else
2958 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
2959 }
2960#endif
2961}
2962
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2963/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2964 * transaction <txn>. Returns the first rule that prevents further processing
2965 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
2966 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
2967 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2968 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2969static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2970http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2971{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2972 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2973 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2974 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2975
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2976 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2977 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2978 continue;
2979
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2980 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2981 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2982 int ret;
2983
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2984 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]2985 ret = acl_pass(ret);
2986
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2987 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2988 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2989
2990 if (!ret) /* condition not matched */
2991 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2992 }
2993
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2994
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2995 switch (rule->action) {
2996 case HTTP_REQ_ACT_ALLOW:
2997 return NULL; /* "allow" rules are OK */
2998
2999 case HTTP_REQ_ACT_DENY:
3000 txn->flags |= TX_CLDENY;
3001 return rule;
3002
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3003 case HTTP_REQ_ACT_TARPIT:
3004 txn->flags |= TX_CLTARPIT;
3005 return rule;
3006
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3007 case HTTP_REQ_ACT_AUTH:
3008 return rule;
3009
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3010 case HTTP_REQ_ACT_REDIR:
3011 return rule;
3012
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3013 case HTTP_REQ_ACT_SET_NICE:
3014 s->task->nice = rule->arg.nice;
3015 break;
3016
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3017 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3018 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]3019 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]3020 break;
3021
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3022 case HTTP_REQ_ACT_SET_MARK:
3023#ifdef SO_MARK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3024 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]3025 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]3026#endif
3027 break;
3028
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3029 case HTTP_REQ_ACT_SET_LOGL:
3030 s->logs.level = rule->arg.loglevel;
3031 break;
3032
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3033 case HTTP_REQ_ACT_SET_HDR:
3034 ctx.idx = 0;
3035 /* remove all occurrences of the header */
3036 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3037 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3038 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3039 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3040 /* now fall through to header addition */
3041
3042 case HTTP_REQ_ACT_ADD_HDR:
3043 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3044 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3045 trash.len = rule->arg.hdr_add.name_len;
3046 trash.str[trash.len++] = ':';
3047 trash.str[trash.len++] = ' ';
3048 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3049 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3050 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3051 }
3052 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3053
3054 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3055 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3056}
3057
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3058
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3059/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3060 * transaction <txn>. Returns the first rule that prevents further processing
3061 * of the response (deny, ...) or NULL if it executed all rules or stopped
3062 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3063 * rule.
3064 */
3065static struct http_res_rule *
3066http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3067{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3068 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3069 struct http_res_rule *rule;
3070 struct hdr_ctx ctx;
3071
3072 list_for_each_entry(rule, rules, list) {
3073 if (rule->action >= HTTP_RES_ACT_MAX)
3074 continue;
3075
3076 /* check optional condition */
3077 if (rule->cond) {
3078 int ret;
3079
3080 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3081 ret = acl_pass(ret);
3082
3083 if (rule->cond->pol == ACL_COND_UNLESS)
3084 ret = !ret;
3085
3086 if (!ret) /* condition not matched */
3087 continue;
3088 }
3089
3090
3091 switch (rule->action) {
3092 case HTTP_RES_ACT_ALLOW:
3093 return NULL; /* "allow" rules are OK */
3094
3095 case HTTP_RES_ACT_DENY:
3096 txn->flags |= TX_SVDENY;
3097 return rule;
3098
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3099 case HTTP_RES_ACT_SET_NICE:
3100 s->task->nice = rule->arg.nice;
3101 break;
3102
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3103 case HTTP_RES_ACT_SET_TOS:
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3104 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]3105 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]3106 break;
3107
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3108 case HTTP_RES_ACT_SET_MARK:
3109#ifdef SO_MARK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3110 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]3111 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]3112#endif
3113 break;
3114
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3115 case HTTP_RES_ACT_SET_LOGL:
3116 s->logs.level = rule->arg.loglevel;
3117 break;
3118
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3119 case HTTP_RES_ACT_SET_HDR:
3120 ctx.idx = 0;
3121 /* remove all occurrences of the header */
3122 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3123 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3124 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3125 }
3126 /* now fall through to header addition */
3127
3128 case HTTP_RES_ACT_ADD_HDR:
3129 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3130 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3131 trash.len = rule->arg.hdr_add.name_len;
3132 trash.str[trash.len++] = ':';
3133 trash.str[trash.len++] = ' ';
3134 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3135 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3136 break;
3137 }
3138 }
3139
3140 /* we reached the end of the rules, nothing to report */
3141 return NULL;
3142}
3143
3144
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3145/* Perform an HTTP redirect based on the information in <rule>. The function
3146 * returns non-zero on success, or zero in case of a, irrecoverable error such
3147 * as too large a request to build a valid response.
3148 */
3149static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3150{
3151 struct http_msg *msg = &txn->req;
3152 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3153 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3154
3155 /* build redirect message */
3156 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3157 case 308:
3158 msg_fmt = HTTP_308;
3159 break;
3160 case 307:
3161 msg_fmt = HTTP_307;
3162 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3163 case 303:
3164 msg_fmt = HTTP_303;
3165 break;
3166 case 301:
3167 msg_fmt = HTTP_301;
3168 break;
3169 case 302:
3170 default:
3171 msg_fmt = HTTP_302;
3172 break;
3173 }
3174
3175 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3176 return 0;
3177
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3178 location = trash.str + trash.len;
3179
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3180 switch(rule->type) {
3181 case REDIRECT_TYPE_SCHEME: {
3182 const char *path;
3183 const char *host;
3184 struct hdr_ctx ctx;
3185 int pathlen;
3186 int hostlen;
3187
3188 host = "";
3189 hostlen = 0;
3190 ctx.idx = 0;
3191 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3192 host = ctx.line + ctx.val;
3193 hostlen = ctx.vlen;
3194 }
3195
3196 path = http_get_path(txn);
3197 /* build message using path */
3198 if (path) {
3199 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3200 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3201 int qs = 0;
3202 while (qs < pathlen) {
3203 if (path[qs] == '?') {
3204 pathlen = qs;
3205 break;
3206 }
3207 qs++;
3208 }
3209 }
3210 } else {
3211 path = "/";
3212 pathlen = 1;
3213 }
3214
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3215 if (rule->rdr_str) { /* this is an old "redirect" rule */
3216 /* check if we can add scheme + "://" + host + path */
3217 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3218 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3219
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3220 /* add scheme */
3221 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3222 trash.len += rule->rdr_len;
3223 }
3224 else {
3225 /* add scheme with executing log format */
3226 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]3227
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3228 /* check if we can add scheme + "://" + host + path */
3229 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3230 return 0;
3231 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3232 /* add "://" */
3233 memcpy(trash.str + trash.len, "://", 3);
3234 trash.len += 3;
3235
3236 /* add host */
3237 memcpy(trash.str + trash.len, host, hostlen);
3238 trash.len += hostlen;
3239
3240 /* add path */
3241 memcpy(trash.str + trash.len, path, pathlen);
3242 trash.len += pathlen;
3243
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3244 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3245 if (trash.len && trash.str[trash.len - 1] != '/' &&
3246 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3247 if (trash.len > trash.size - 5)
3248 return 0;
3249 trash.str[trash.len] = '/';
3250 trash.len++;
3251 }
3252
3253 break;
3254 }
3255 case REDIRECT_TYPE_PREFIX: {
3256 const char *path;
3257 int pathlen;
3258
3259 path = http_get_path(txn);
3260 /* build message using path */
3261 if (path) {
3262 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3263 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3264 int qs = 0;
3265 while (qs < pathlen) {
3266 if (path[qs] == '?') {
3267 pathlen = qs;
3268 break;
3269 }
3270 qs++;
3271 }
3272 }
3273 } else {
3274 path = "/";
3275 pathlen = 1;
3276 }
3277
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3278 if (rule->rdr_str) { /* this is an old "redirect" rule */
3279 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3280 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3281
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3282 /* add prefix. Note that if prefix == "/", we don't want to
3283 * add anything, otherwise it makes it hard for the user to
3284 * configure a self-redirection.
3285 */
3286 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3287 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3288 trash.len += rule->rdr_len;
3289 }
3290 }
3291 else {
3292 /* add prefix with executing log format */
3293 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3294
3295 /* Check length */
3296 if (trash.len + pathlen > trash.size - 4)
3297 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3298 }
3299
3300 /* add path */
3301 memcpy(trash.str + trash.len, path, pathlen);
3302 trash.len += pathlen;
3303
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3304 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3305 if (trash.len && trash.str[trash.len - 1] != '/' &&
3306 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3307 if (trash.len > trash.size - 5)
3308 return 0;
3309 trash.str[trash.len] = '/';
3310 trash.len++;
3311 }
3312
3313 break;
3314 }
3315 case REDIRECT_TYPE_LOCATION:
3316 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3317 if (rule->rdr_str) { /* this is an old "redirect" rule */
3318 if (trash.len + rule->rdr_len > trash.size - 4)
3319 return 0;
3320
3321 /* add location */
3322 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3323 trash.len += rule->rdr_len;
3324 }
3325 else {
3326 /* add location with executing log format */
3327 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]3328
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3329 /* Check left length */
3330 if (trash.len > trash.size - 4)
3331 return 0;
3332 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3333 break;
3334 }
3335
3336 if (rule->cookie_len) {
3337 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3338 trash.len += 14;
3339 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3340 trash.len += rule->cookie_len;
3341 memcpy(trash.str + trash.len, "\r\n", 2);
3342 trash.len += 2;
3343 }
3344
3345 /* add end of headers and the keep-alive/close status.
3346 * We may choose to set keep-alive if the Location begins
3347 * with a slash, because the client will come back to the
3348 * same server.
3349 */
3350 txn->status = rule->code;
3351 /* let's log the request time */
3352 s->logs.tv_request = now;
3353
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3354 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3355 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3356 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3357 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3358 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3359 /* keep-alive possible */
3360 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3361 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3362 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3363 trash.len += 30;
3364 } else {
3365 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3366 trash.len += 24;
3367 }
3368 }
3369 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3370 trash.len += 4;
3371 bo_inject(txn->rsp.chn, trash.str, trash.len);
3372 /* "eat" the request */
3373 bi_fast_delete(txn->req.chn->buf, msg->sov);
3374 msg->sov = 0;
3375 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3376 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3377 txn->req.msg_state = HTTP_MSG_CLOSED;
3378 txn->rsp.msg_state = HTTP_MSG_DONE;
3379 } else {
3380 /* keep-alive not possible */
3381 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3382 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3383 trash.len += 29;
3384 } else {
3385 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3386 trash.len += 23;
3387 }
3388 stream_int_retnclose(txn->req.chn->prod, &trash);
3389 txn->req.chn->analysers = 0;
3390 }
3391
3392 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3393 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3394 if (!(s->flags & SN_FINST_MASK))
3395 s->flags |= SN_FINST_R;
3396
3397 return 1;
3398}
3399
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3400/* This stream analyser runs all HTTP request processing which is common to
3401 * frontends and backends, which means blocking ACLs, filters, connection-close,
3402 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3403 * 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]3404 * either needs more data or wants to immediately abort the request (eg: deny,
3405 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3406 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3407int 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]3408{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3409 struct http_txn *txn = &s->txn;
3410 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3411 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3412 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3413 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3414 struct cond_wordlist *wl;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3415
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3416 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3417 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3418 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3419 return 0;
3420 }
3421
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3422 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3423 req->analyse_exp = TICK_ETERNITY;
3424
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3425 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]3426 now_ms, __FUNCTION__,
3427 s,
3428 req,
3429 req->rex, req->wex,
3430 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3431 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3432 req->analysers);
3433
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3434 /* first check whether we have some ACLs set to block this request */
3435 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3436 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]3437
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3438 ret = acl_pass(ret);
3439 if (cond->pol == ACL_COND_UNLESS)
3440 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3441
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3442 if (ret) {
3443 txn->status = 403;
3444 /* let's log the request time */
3445 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3446 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3447 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3448 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3449 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3450 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3451
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3452 /* just in case we have some per-backend tracking */
3453 session_inc_be_http_req_ctr(s);
3454
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3455 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3456 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]3457
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3458 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3459 if (!http_req_last_rule) {
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3460 if (stats_check_uri(s->rep->prod, txn, px)) {
3461 s->target = &http_stats_applet.obj_type;
3462 /* parse the whole stats request and extract the relevant information */
3463 http_handle_stats(s, req);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3464 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]3465 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3466 }
3467
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3468 /* only apply req{,i}{rep/deny/tarpit} if the request was not yet
3469 * blocked by an http-request rule.
3470 */
3471 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)) && (px->req_exp != NULL)) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3472 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3473 goto return_bad_req;
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3474 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3475
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3476 /* return a 403 if either rule has blocked */
3477 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3478 if (txn->flags & TX_CLDENY) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3479 txn->status = 403;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3480 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3481 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3482 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3483 s->fe->fe_counters.denied_req++;
3484 if (s->fe != s->be)
3485 s->be->be_counters.denied_req++;
3486 if (s->listener->counters)
3487 s->listener->counters->denied_req++;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3488 goto return_prx_cond;
3489 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3490
3491 /* When a connection is tarpitted, we use the tarpit timeout,
3492 * which may be the same as the connect timeout if unspecified.
3493 * If unset, then set it to zero because we really want it to
3494 * eventually expire. We build the tarpit as an analyser.
3495 */
3496 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3497 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3498 /* wipe the request out so that we can drop the connection early
3499 * if the client closes first.
3500 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3501 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3502 req->analysers = 0; /* remove switching rules etc... */
3503 req->analysers |= AN_REQ_HTTP_TARPIT;
3504 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3505 if (!req->analyse_exp)
3506 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3507 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3508 s->fe->fe_counters.denied_req++;
3509 if (s->fe != s->be)
3510 s->be->be_counters.denied_req++;
3511 if (s->listener->counters)
3512 s->listener->counters->denied_req++;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3513 return 1;
3514 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3515 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3516
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3517 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3518 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3519 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3520 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3521 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3522 * avoid to redo the same work if FE and BE have the same settings (common).
3523 * The method consists in checking if options changed between the two calls
3524 * (implying that either one is non-null, or one of them is non-null and we
3525 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3526 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3527
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3528 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3529 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3530 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3531 (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]3532 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3533
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3534 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3535 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3536 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3537 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3538 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3539 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3540 tmp = TX_CON_WANT_CLO;
3541
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3542 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3543 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3544
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3545 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3546 /* parse the Connection header and possibly clean it */
3547 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3548 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3549 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3550 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3551 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3552 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3553 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3554 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3555 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3556
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3557 /* check if client or config asks for explicit close in KAL/SCL */
3558 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3559 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3560 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3561 (!(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]3562 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3563 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3564 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3565 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3566 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3567
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3568 /* we can be blocked here because the request needs to be authenticated,
3569 * either to pass or to access stats.
3570 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3571 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3572 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3573
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3574 if (!realm)
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3575 realm = (objt_applet(s->target) == &http_stats_applet) ? STATS_DEFAULT_REALM : px->id;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3576
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3577 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]3578 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3579 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3580 /* on 401 we still count one error, because normal browsing
3581 * won't significantly increase the counter but brute force
3582 * attempts will.
3583 */
3584 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3585 goto return_prx_cond;
3586 }
3587
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3588 /* add request headers from the rule sets in the same order */
3589 list_for_each_entry(wl, &px->req_add, list) {
3590 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3591 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]3592 ret = acl_pass(ret);
3593 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3594 ret = !ret;
3595 if (!ret)
3596 continue;
3597 }
3598
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3599 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3600 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3601 }
3602
3603 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3604 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3605 goto return_bad_req;
3606 req->analyse_exp = TICK_ETERNITY;
3607 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3608 }
3609
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3610 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3611 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3612 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3613 s->fe->fe_counters.intercepted_req++;
3614
3615 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3616 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
3617 if (!(s->flags & SN_FINST_MASK))
3618 s->flags |= SN_FINST_R;
3619
3620 req->analyse_exp = TICK_ETERNITY;
3621 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3622 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3623 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3624
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3625 /* check whether we have some ACLs set to redirect this request */
3626 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3627 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3628 int ret;
3629
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3630 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]3631 ret = acl_pass(ret);
3632 if (rule->cond->pol == ACL_COND_UNLESS)
3633 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3634 if (!ret)
3635 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3636 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3637 if (!http_apply_redirect_rule(rule, s, txn))
3638 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3639
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3640 req->analyse_exp = TICK_ETERNITY;
3641 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3642 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3643
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3644 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3645 * If this happens, then the data will not come immediately, so we must
3646 * send all what we have without waiting. Note that due to the small gain
3647 * 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]3648 * 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]3649 * itself once used.
3650 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3651 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3652
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3653 /* that's OK for us now, let's move on to next analysers */
3654 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3655
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3656 return_bad_req:
3657 /* We centralize bad requests processing here */
3658 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3659 /* we detected a parsing error. We want to archive this request
3660 * in the dedicated proxy area for later troubleshooting.
3661 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3662 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]3663 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3664
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3665 txn->req.msg_state = HTTP_MSG_ERROR;
3666 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3667 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3668
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3669 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3670 if (s->listener->counters)
3671 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3672
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3673 return_prx_cond:
3674 if (!(s->flags & SN_ERR_MASK))
3675 s->flags |= SN_ERR_PRXCOND;
3676 if (!(s->flags & SN_FINST_MASK))
3677 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3678
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3679 req->analysers = 0;
3680 req->analyse_exp = TICK_ETERNITY;
3681 return 0;
3682}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3683
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3684/* This function performs all the processing enabled for the current request.
3685 * It returns 1 if the processing can continue on next analysers, or zero if it
3686 * needs more data, encounters an error, or wants to immediately abort the
3687 * request. It relies on buffers flags, and updates s->req->analysers.
3688 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3689int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3690{
3691 struct http_txn *txn = &s->txn;
3692 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3693 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3694
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3695 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3696 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3697 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3698 return 0;
3699 }
3700
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3701 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]3702 now_ms, __FUNCTION__,
3703 s,
3704 req,
3705 req->rex, req->wex,
3706 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3707 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3708 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3709
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3710 if (s->fe->comp || s->be->comp)
3711 select_compression_request_header(s, req->buf);
3712
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3713 /*
3714 * Right now, we know that we have processed the entire headers
3715 * and that unwanted requests have been filtered out. We can do
3716 * whatever we want with the remaining request. Also, now we
3717 * may have separate values for ->fe, ->be.
3718 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3719
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3720 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3721 * If HTTP PROXY is set we simply get remote server address parsing
3722 * incoming request. Note that this requires that a connection is
3723 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3724 */
3725 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3726 struct connection *conn;
3727
3728 if (unlikely((conn = si_alloc_conn(req->cons)) == NULL)) {
3729 txn->req.msg_state = HTTP_MSG_ERROR;
3730 txn->status = 500;
3731 req->analysers = 0;
3732 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
3733
3734 if (!(s->flags & SN_ERR_MASK))
3735 s->flags |= SN_ERR_RESOURCE;
3736 if (!(s->flags & SN_FINST_MASK))
3737 s->flags |= SN_FINST_R;
3738
3739 return 0;
3740 }
3741 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]3742 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3743
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3744 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3745 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3746 * Note that doing so might move headers in the request, but
3747 * the fields will stay coherent and the URI will not move.
3748 * This should only be performed in the backend.
3749 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3750 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3751 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3752 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3753
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3754 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3755 * 8: the appsession cookie was looked up very early in 1.2,
3756 * so let's do the same now.
3757 */
3758
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3759 /* It needs to look into the URI unless persistence must be ignored */
3760 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3761 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]3762 }
3763
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3764 /* add unique-id if "header-unique-id" is specified */
3765
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3766 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
3767 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
3768 goto return_bad_req;
3769 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3770 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3771 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3772
3773 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3774 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3775 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3776 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3777 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]3778 goto return_bad_req;
3779 }
3780
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3781 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3782 * 9: add X-Forwarded-For if either the frontend or the backend
3783 * asks for it.
3784 */
3785 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3786 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3787 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3788 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3789 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]3790 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3791 /* The header is set to be added only if none is present
3792 * and we found it, so don't do anything.
3793 */
3794 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3795 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3796 /* Add an X-Forwarded-For header unless the source IP is
3797 * in the 'except' network range.
3798 */
3799 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3800 (((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]3801 != s->fe->except_net.s_addr) &&
3802 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3803 (((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]3804 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3805 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3806 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3807 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3808
3809 /* Note: we rely on the backend to get the header name to be used for
3810 * x-forwarded-for, because the header is really meant for the backends.
3811 * However, if the backend did not specify any option, we have to rely
3812 * on the frontend's header name.
3813 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3814 if (s->be->fwdfor_hdr_len) {
3815 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3816 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3817 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3818 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3819 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3820 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3821 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]3822
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3823 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]3824 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3825 }
3826 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3827 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3828 /* FIXME: for the sake of completeness, we should also support
3829 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3830 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3831 int len;
3832 char pn[INET6_ADDRSTRLEN];
3833 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3834 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3835 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3836
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3837 /* Note: we rely on the backend to get the header name to be used for
3838 * x-forwarded-for, because the header is really meant for the backends.
3839 * However, if the backend did not specify any option, we have to rely
3840 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3841 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3842 if (s->be->fwdfor_hdr_len) {
3843 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3844 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3845 } else {
3846 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3847 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3848 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3849 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3850
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3851 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]3852 goto return_bad_req;
3853 }
3854 }
3855
3856 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3857 * 10: add X-Original-To if either the frontend or the backend
3858 * asks for it.
3859 */
3860 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3861
3862 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3863 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3864 /* Add an X-Original-To header unless the destination IP is
3865 * in the 'except' network range.
3866 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3867 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3868
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3869 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3870 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3871 (((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]3872 != s->fe->except_to.s_addr) &&
3873 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3874 (((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]3875 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3876 int len;
3877 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3878 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3879
3880 /* Note: we rely on the backend to get the header name to be used for
3881 * x-original-to, because the header is really meant for the backends.
3882 * However, if the backend did not specify any option, we have to rely
3883 * on the frontend's header name.
3884 */
3885 if (s->be->orgto_hdr_len) {
3886 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3887 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3888 } else {
3889 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3890 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3891 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3892 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]3893
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3894 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]3895 goto return_bad_req;
3896 }
3897 }
3898 }
3899
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3900 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3901 * If an "Upgrade" token is found, the header is left untouched in order not to have
3902 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3903 * "Upgrade" is present in the Connection header.
3904 */
3905 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3906 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3907 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3908 unsigned int want_flags = 0;
3909
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3910 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3911 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3912 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3913 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3914 want_flags |= TX_CON_CLO_SET;
3915 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3916 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3917 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3918 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3919 want_flags |= TX_CON_KAL_SET;
3920 }
3921
3922 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3923 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3924 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3925
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3926
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3927 /* If we have no server assigned yet and we're balancing on url_param
3928 * with a POST request, we may be interested in checking the body for
3929 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3930 */
3931 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3932 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3933 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3934 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3935 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3936 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3937 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3938
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3939 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3940 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3941#ifdef TCP_QUICKACK
3942 /* We expect some data from the client. Unless we know for sure
3943 * we already have a full request, we have to re-enable quick-ack
3944 * in case we previously disabled it, otherwise we might cause
3945 * the client to delay further data.
3946 */
3947 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3948 cli_conn && (cli_conn->flags & CO_FL_CTRL_READY) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3949 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3950 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3951 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3952#endif
3953 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3954
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3955 /*************************************************************
3956 * OK, that's finished for the headers. We have done what we *
3957 * could. Let's switch to the DATA state. *
3958 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3959 req->analyse_exp = TICK_ETERNITY;
3960 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3961
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3962 /* if the server closes the connection, we want to immediately react
3963 * and close the socket to save packets and syscalls.
3964 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]3965 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
3966 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3967
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3968 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3969 /* OK let's go on with the BODY now */
3970 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3971
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3972 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3973 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3974 /* we detected a parsing error. We want to archive this request
3975 * in the dedicated proxy area for later troubleshooting.
3976 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3977 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]3978 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3979
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3980 txn->req.msg_state = HTTP_MSG_ERROR;
3981 txn->status = 400;
3982 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3983 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3984
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3985 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3986 if (s->listener->counters)
3987 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3988
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3989 if (!(s->flags & SN_ERR_MASK))
3990 s->flags |= SN_ERR_PRXCOND;
3991 if (!(s->flags & SN_FINST_MASK))
3992 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3993 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3994}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3995
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3996/* This function is an analyser which processes the HTTP tarpit. It always
3997 * returns zero, at the beginning because it prevents any other processing
3998 * from occurring, and at the end because it terminates the request.
3999 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4000int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4001{
4002 struct http_txn *txn = &s->txn;
4003
4004 /* This connection is being tarpitted. The CLIENT side has
4005 * already set the connect expiration date to the right
4006 * timeout. We just have to check that the client is still
4007 * there and that the timeout has not expired.
4008 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4009 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4010 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4011 !tick_is_expired(req->analyse_exp, now_ms))
4012 return 0;
4013
4014 /* We will set the queue timer to the time spent, just for
4015 * logging purposes. We fake a 500 server error, so that the
4016 * attacker will not suspect his connection has been tarpitted.
4017 * It will not cause trouble to the logs because we can exclude
4018 * the tarpitted connections by filtering on the 'PT' status flags.
4019 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4020 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4021
4022 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4023 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4024 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4025
4026 req->analysers = 0;
4027 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4028
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4029 if (!(s->flags & SN_ERR_MASK))
4030 s->flags |= SN_ERR_PRXCOND;
4031 if (!(s->flags & SN_FINST_MASK))
4032 s->flags |= SN_FINST_T;
4033 return 0;
4034}
4035
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4036/* This function is an analyser which processes the HTTP request body. It looks
4037 * for parameters to be used for the load balancing algorithm (url_param). It
4038 * must only be called after the standard HTTP request processing has occurred,
4039 * because it expects the request to be parsed. It returns zero if it needs to
4040 * read more data, or 1 once it has completed its analysis.
4041 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4042int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4043{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4044 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4045 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4046 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4047
4048 /* We have to parse the HTTP request body to find any required data.
4049 * "balance url_param check_post" should have been the only way to get
4050 * into this. We were brought here after HTTP header analysis, so all
4051 * related structures are ready.
4052 */
4053
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4054 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4055 goto missing_data;
4056
4057 if (msg->msg_state < HTTP_MSG_100_SENT) {
4058 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4059 * send an HTTP/1.1 100 Continue intermediate response.
4060 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4061 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4062 struct hdr_ctx ctx;
4063 ctx.idx = 0;
4064 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4065 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4066 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4067 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4068 }
4069 }
4070 msg->msg_state = HTTP_MSG_100_SENT;
4071 }
4072
4073 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4074 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4075 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4076 * is still null. We must save the body in msg->next because it
4077 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4078 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4079 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4080
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4081 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4082 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4083 else
4084 msg->msg_state = HTTP_MSG_DATA;
4085 }
4086
4087 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4088 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4089 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4090 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4091 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4092 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4093
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4094 if (!ret)
4095 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4096 else if (ret < 0) {
4097 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4098 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4099 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4100 }
4101
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4102 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4103 * We have the first data byte is in msg->sov. We're waiting for at
4104 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4105 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4106
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4107 if (msg->body_len < limit)
4108 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4109
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4110 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4111 goto http_end;
4112
4113 missing_data:
4114 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4115 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4116 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4117 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4118 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4119
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4120 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4121 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4122 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4123
4124 if (!(s->flags & SN_ERR_MASK))
4125 s->flags |= SN_ERR_CLITO;
4126 if (!(s->flags & SN_FINST_MASK))
4127 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4128 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4129 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4130
4131 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4132 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]4133 /* Not enough data. We'll re-use the http-request
4134 * timeout here. Ideally, we should set the timeout
4135 * relative to the accept() date. We just set the
4136 * request timeout once at the beginning of the
4137 * request.
4138 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4139 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4140 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4141 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4142 return 0;
4143 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4144
4145 http_end:
4146 /* The situation will not evolve, so let's give up on the analysis. */
4147 s->logs.tv_request = now; /* update the request timer to reflect full request */
4148 req->analysers &= ~an_bit;
4149 req->analyse_exp = TICK_ETERNITY;
4150 return 1;
4151
4152 return_bad_req: /* let's centralize all bad requests */
4153 txn->req.msg_state = HTTP_MSG_ERROR;
4154 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4155 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4156
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4157 if (!(s->flags & SN_ERR_MASK))
4158 s->flags |= SN_ERR_PRXCOND;
4159 if (!(s->flags & SN_FINST_MASK))
4160 s->flags |= SN_FINST_R;
4161
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4162 return_err_msg:
4163 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4164 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4165 if (s->listener->counters)
4166 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4167 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4168}
4169
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4170/* send a server's name with an outgoing request over an established connection.
4171 * Note: this function is designed to be called once the request has been scheduled
4172 * for being forwarded. This is the reason why it rewinds the buffer before
4173 * proceeding.
4174 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4175int 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]4176
4177 struct hdr_ctx ctx;
4178
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4179 char *hdr_name = be->server_id_hdr_name;
4180 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4181 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4182 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4183 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4184
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4185 ctx.idx = 0;
4186
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4187 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4188 if (old_o) {
4189 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4190 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4191 }
4192
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4193 old_i = chn->buf->i;
4194 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]4195 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4196 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4197 }
4198
4199 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4200 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4201 memcpy(hdr_val, hdr_name, hdr_name_len);
4202 hdr_val += hdr_name_len;
4203 *hdr_val++ = ':';
4204 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4205 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4206 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]4207
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4208 if (old_o) {
4209 /* If this was a forwarded request, we must readjust the amount of
4210 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4211 * variations. Note that if the request was already scheduled for
4212 * forwarding, it had its req->sol pointing to the body, which
4213 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4214 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4215 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4216 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4217 }
4218
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4219 return 0;
4220}
4221
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4222/* Terminate current transaction and prepare a new one. This is very tricky
4223 * right now but it works.
4224 */
4225void http_end_txn_clean_session(struct session *s)
4226{
4227 /* FIXME: We need a more portable way of releasing a backend's and a
4228 * server's connections. We need a safer way to reinitialize buffer
4229 * flags. We also need a more accurate method for computing per-request
4230 * data.
4231 */
4232 http_silent_debug(__LINE__, s);
4233
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4234 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4235 si_shutr(s->req->cons);
4236 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4237
4238 http_silent_debug(__LINE__, s);
4239
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4240 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4241 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4242 if (unlikely(s->srv_conn))
4243 sess_change_server(s, NULL);
4244 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4245
4246 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4247 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4248 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4249
4250 if (s->txn.status) {
4251 int n;
4252
4253 n = s->txn.status / 100;
4254 if (n < 1 || n > 5)
4255 n = 0;
4256
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4257 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4258 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4259 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4260 s->fe->fe_counters.p.http.comp_rsp++;
4261 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4262 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4263 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4264 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4265 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4266 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4267 s->be->be_counters.p.http.comp_rsp++;
4268 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4269 }
4270
4271 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4272 s->logs.bytes_in -= s->req->buf->i;
4273 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4274
4275 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4276 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4277 !(s->flags & SN_MONITOR) &&
4278 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4279 s->do_log(s);
4280 }
4281
4282 s->logs.accept_date = date; /* user-visible date for logging */
4283 s->logs.tv_accept = now; /* corrected date for internal use */
4284 tv_zero(&s->logs.tv_request);
4285 s->logs.t_queue = -1;
4286 s->logs.t_connect = -1;
4287 s->logs.t_data = -1;
4288 s->logs.t_close = 0;
4289 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4290 s->logs.srv_queue_size = 0; /* we will get this number soon */
4291
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4292 s->logs.bytes_in = s->req->total = s->req->buf->i;
4293 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4294
4295 if (s->pend_pos)
4296 pendconn_free(s->pend_pos);
4297
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4298 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4299 if (s->flags & SN_CURR_SESS) {
4300 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4301 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4302 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4303 if (may_dequeue_tasks(objt_server(s->target), s->be))
4304 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4305 }
4306
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4307 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4308
4309 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4310 si_release_endpoint(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4311 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4312 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4313 s->req->cons->exp = TICK_ETERNITY;
4314 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4315 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4316 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]4317 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]4318 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4319
4320 if (s->flags & SN_COMP_READY)
4321 s->comp_algo->end(&s->comp_ctx);
4322 s->comp_algo = NULL;
4323 s->flags &= ~SN_COMP_READY;
4324
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4325 s->txn.meth = 0;
4326 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4327 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4328 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4329 s->req->cons->flags |= SI_FL_INDEP_STR;
4330
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4331 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4332 s->req->flags |= CF_NEVER_WAIT;
4333 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4334 }
4335
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4336 /* if the request buffer is not empty, it means we're
4337 * about to process another request, so send pending
4338 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4339 * Just don't do this if the buffer is close to be full,
4340 * because the request will wait for it to flush a little
4341 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4342 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4343 if (s->req->buf->i) {
4344 if (s->rep->buf->o &&
4345 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4346 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]4347 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4348 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4349
4350 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4351 channel_auto_read(s->req);
4352 channel_auto_close(s->req);
4353 channel_auto_read(s->rep);
4354 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4355
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4356 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4357 s->rep->analysers = 0;
4358
4359 http_silent_debug(__LINE__, s);
4360}
4361
4362
4363/* This function updates the request state machine according to the response
4364 * state machine and buffer flags. It returns 1 if it changes anything (flag
4365 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4366 * it is only used to find when a request/response couple is complete. Both
4367 * this function and its equivalent should loop until both return zero. It
4368 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4369 */
4370int http_sync_req_state(struct session *s)
4371{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4372 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4373 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4374 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4375 unsigned int old_state = txn->req.msg_state;
4376
4377 http_silent_debug(__LINE__, s);
4378 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4379 return 0;
4380
4381 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4382 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4383 * We can shut the read side unless we want to abort_on_close,
4384 * or we have a POST request. The issue with POST requests is
4385 * that some browsers still send a CRLF after the request, and
4386 * this CRLF must be read so that it does not remain in the kernel
4387 * buffers, otherwise a close could cause an RST on some systems
4388 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4389 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4390 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4391 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4392
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4393 /* if the server closes the connection, we want to immediately react
4394 * and close the socket to save packets and syscalls.
4395 */
4396 chn->cons->flags |= SI_FL_NOHALF;
4397
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4398 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4399 goto wait_other_side;
4400
4401 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4402 /* The server has not finished to respond, so we
4403 * don't want to move in order not to upset it.
4404 */
4405 goto wait_other_side;
4406 }
4407
4408 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4409 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4410 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4411 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4412 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4413 goto wait_other_side;
4414 }
4415
4416 /* When we get here, it means that both the request and the
4417 * response have finished receiving. Depending on the connection
4418 * mode, we'll have to wait for the last bytes to leave in either
4419 * direction, and sometimes for a close to be effective.
4420 */
4421
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4422 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4423 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4424 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4425 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4426 }
4427 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4428 /* Option forceclose is set, or either side wants to close,
4429 * let's enforce it now that we're not expecting any new
4430 * data to come. The caller knows the session is complete
4431 * once both states are CLOSED.
4432 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4433 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4434 channel_shutr_now(chn);
4435 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4436 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4437 }
4438 else {
4439 /* The last possible modes are keep-alive and tunnel. Since tunnel
4440 * mode does not set the body analyser, we can't reach this place
4441 * in tunnel mode, so we're left with keep-alive only.
4442 * This mode is currently not implemented, we switch to tunnel mode.
4443 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4444 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4445 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4446 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4447 }
4448
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4449 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4450 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4451 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4452
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4453 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4454 txn->req.msg_state = HTTP_MSG_CLOSING;
4455 goto http_msg_closing;
4456 }
4457 else {
4458 txn->req.msg_state = HTTP_MSG_CLOSED;
4459 goto http_msg_closed;
4460 }
4461 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4462 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4463 }
4464
4465 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4466 http_msg_closing:
4467 /* nothing else to forward, just waiting for the output buffer
4468 * to be empty and for the shutw_now to take effect.
4469 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4470 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4471 txn->req.msg_state = HTTP_MSG_CLOSED;
4472 goto http_msg_closed;
4473 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4474 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4475 txn->req.msg_state = HTTP_MSG_ERROR;
4476 goto wait_other_side;
4477 }
4478 }
4479
4480 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4481 http_msg_closed:
4482 goto wait_other_side;
4483 }
4484
4485 wait_other_side:
4486 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4487 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4488}
4489
4490
4491/* This function updates the response state machine according to the request
4492 * state machine and buffer flags. It returns 1 if it changes anything (flag
4493 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4494 * it is only used to find when a request/response couple is complete. Both
4495 * this function and its equivalent should loop until both return zero. It
4496 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4497 */
4498int http_sync_res_state(struct session *s)
4499{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4500 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4501 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4502 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4503 unsigned int old_state = txn->rsp.msg_state;
4504
4505 http_silent_debug(__LINE__, s);
4506 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4507 return 0;
4508
4509 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4510 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4511 * still monitor the server connection for a possible close
4512 * while the request is being uploaded, so we don't disable
4513 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4514 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4515 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4516
4517 if (txn->req.msg_state == HTTP_MSG_ERROR)
4518 goto wait_other_side;
4519
4520 if (txn->req.msg_state < HTTP_MSG_DONE) {
4521 /* The client seems to still be sending data, probably
4522 * because we got an error response during an upload.
4523 * We have the choice of either breaking the connection
4524 * or letting it pass through. Let's do the later.
4525 */
4526 goto wait_other_side;
4527 }
4528
4529 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4530 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4531 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4532 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4533 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4534 goto wait_other_side;
4535 }
4536
4537 /* When we get here, it means that both the request and the
4538 * response have finished receiving. Depending on the connection
4539 * mode, we'll have to wait for the last bytes to leave in either
4540 * direction, and sometimes for a close to be effective.
4541 */
4542
4543 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4544 /* Server-close mode : shut read and wait for the request
4545 * side to close its output buffer. The caller will detect
4546 * when we're in DONE and the other is in CLOSED and will
4547 * catch that for the final cleanup.
4548 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4549 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4550 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4551 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4552 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4553 /* Option forceclose is set, or either side wants to close,
4554 * let's enforce it now that we're not expecting any new
4555 * data to come. The caller knows the session is complete
4556 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4557 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4558 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4559 channel_shutr_now(chn);
4560 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4561 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4562 }
4563 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4564 /* The last possible modes are keep-alive and tunnel. Since tunnel
4565 * mode does not set the body analyser, we can't reach this place
4566 * in tunnel mode, so we're left with keep-alive only.
4567 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4568 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4569 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4570 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4571 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4572 }
4573
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4574 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4575 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4576 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4577 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4578 goto http_msg_closing;
4579 }
4580 else {
4581 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4582 goto http_msg_closed;
4583 }
4584 }
4585 goto wait_other_side;
4586 }
4587
4588 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4589 http_msg_closing:
4590 /* nothing else to forward, just waiting for the output buffer
4591 * to be empty and for the shutw_now to take effect.
4592 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4593 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4594 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4595 goto http_msg_closed;
4596 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4597 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4598 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4599 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4600 if (objt_server(s->target))
4601 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4602 goto wait_other_side;
4603 }
4604 }
4605
4606 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4607 http_msg_closed:
4608 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4609 bi_erase(chn);
4610 channel_auto_close(chn);
4611 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4612 goto wait_other_side;
4613 }
4614
4615 wait_other_side:
4616 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4617 /* We force the response to leave immediately if we're waiting for the
4618 * other side, since there is no pending shutdown to push it out.
4619 */
4620 if (!channel_is_empty(chn))
4621 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4622 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4623}
4624
4625
4626/* Resync the request and response state machines. Return 1 if either state
4627 * changes.
4628 */
4629int http_resync_states(struct session *s)
4630{
4631 struct http_txn *txn = &s->txn;
4632 int old_req_state = txn->req.msg_state;
4633 int old_res_state = txn->rsp.msg_state;
4634
4635 http_silent_debug(__LINE__, s);
4636 http_sync_req_state(s);
4637 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4638 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4639 if (!http_sync_res_state(s))
4640 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4641 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4642 if (!http_sync_req_state(s))
4643 break;
4644 }
4645 http_silent_debug(__LINE__, s);
4646 /* OK, both state machines agree on a compatible state.
4647 * There are a few cases we're interested in :
4648 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4649 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4650 * directions, so let's simply disable both analysers.
4651 * - HTTP_MSG_CLOSED on the response only means we must abort the
4652 * request.
4653 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4654 * with server-close mode means we've completed one request and we
4655 * must re-initialize the server connection.
4656 */
4657
4658 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4659 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4660 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4661 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4662 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4663 channel_auto_close(s->req);
4664 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4665 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4666 channel_auto_close(s->rep);
4667 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4668 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4669 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4670 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4671 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4672 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4673 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4674 channel_auto_close(s->rep);
4675 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4676 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4677 channel_abort(s->req);
4678 channel_auto_close(s->req);
4679 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4680 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4681 }
4682 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4683 txn->rsp.msg_state == HTTP_MSG_DONE &&
4684 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4685 /* server-close: terminate this server connection and
4686 * reinitialize a fresh-new transaction.
4687 */
4688 http_end_txn_clean_session(s);
4689 }
4690
4691 http_silent_debug(__LINE__, s);
4692 return txn->req.msg_state != old_req_state ||
4693 txn->rsp.msg_state != old_res_state;
4694}
4695
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4696/* This function is an analyser which forwards request body (including chunk
4697 * sizes if any). It is called as soon as we must forward, even if we forward
4698 * zero byte. The only situation where it must not be called is when we're in
4699 * tunnel mode and we want to forward till the close. It's used both to forward
4700 * remaining data and to resync after end of body. It expects the msg_state to
4701 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4702 * 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]4703 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4704 * bytes of pending data + the headers if not already done (between sol and sov).
4705 * 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]4706 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4707int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4708{
4709 struct http_txn *txn = &s->txn;
4710 struct http_msg *msg = &s->txn.req;
4711
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4712 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4713 return 0;
4714
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4715 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]4716 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4717 /* Output closed while we were sending data. We must abort and
4718 * wake the other side up.
4719 */
4720 msg->msg_state = HTTP_MSG_ERROR;
4721 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4722 return 1;
4723 }
4724
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4725 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4726 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4727
4728 /* Note that we don't have to send 100-continue back because we don't
4729 * need the data to complete our job, and it's up to the server to
4730 * decide whether to return 100, 417 or anything else in return of
4731 * an "Expect: 100-continue" header.
4732 */
4733
4734 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4735 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4736 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4737 * is still null. We must save the body in msg->next because it
4738 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4739 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4740 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4741
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4742 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4743 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4744 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4745 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4746 }
4747
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4748 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4749 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4750
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4751 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4752 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4753 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4754 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4755 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4756 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4757 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4758 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4759 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4760
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4761 if (msg->msg_state == HTTP_MSG_DATA) {
4762 /* must still forward */
4763 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4764 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4765
4766 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4767 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4768 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4769 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4770 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4771 }
4772 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4773 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4774 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4775 * TRAILERS state.
4776 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4777 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4778
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4779 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4780 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4781 else if (ret < 0) {
4782 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4783 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4784 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]4785 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4786 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4787 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4788 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4789 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4790 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4791 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4792
4793 if (ret == 0)
4794 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4795 else if (ret < 0) {
4796 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4797 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4798 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]4799 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4800 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4801 /* we're in MSG_CHUNK_SIZE now */
4802 }
4803 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4804 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4805
4806 if (ret == 0)
4807 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4808 else if (ret < 0) {
4809 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4810 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4811 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]4812 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4813 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4814 /* we're in HTTP_MSG_DONE now */
4815 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4816 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4817 int old_state = msg->msg_state;
4818
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4819 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4820 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4821 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4822 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4823 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4824 if (http_resync_states(s)) {
4825 /* some state changes occurred, maybe the analyser
4826 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4827 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4828 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4829 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4830 /* request errors are most likely due to
4831 * the server aborting the transfer.
4832 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4833 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4834 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4835 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4836 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4837 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4838 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4839 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4840 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4841
4842 /* If "option abortonclose" is set on the backend, we
4843 * want to monitor the client's connection and forward
4844 * any shutdown notification to the server, which will
4845 * decide whether to close or to go on processing the
4846 * request.
4847 */
4848 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4849 channel_auto_read(req);
4850 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4851 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4852 else if (s->txn.meth == HTTP_METH_POST) {
4853 /* POST requests may require to read extra CRLF
4854 * sent by broken browsers and which could cause
4855 * an RST to be sent upon close on some systems
4856 * (eg: Linux).
4857 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4858 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4859 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4860
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4861 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4862 }
4863 }
4864
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4865 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4866 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4867 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4868 if (!(s->flags & SN_ERR_MASK))
4869 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4870 if (!(s->flags & SN_FINST_MASK)) {
4871 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4872 s->flags |= SN_FINST_H;
4873 else
4874 s->flags |= SN_FINST_D;
4875 }
4876
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4877 s->fe->fe_counters.cli_aborts++;
4878 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4879 if (objt_server(s->target))
4880 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4881
4882 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4883 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4884
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4885 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4886 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4887 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4888
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4889 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4890 * 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]4891 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4892 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4893 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4894
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4895 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4896 * 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]4897 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4898 * modes are already handled by the stream sock layer. We must not do
4899 * this in content-length mode because it could present the MSG_MORE
4900 * flag with the last block of forwarded data, which would cause an
4901 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4902 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4903 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4904 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4905
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4906 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4907 return 0;
4908
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4909 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4910 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4911 if (s->listener->counters)
4912 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4913 return_bad_req_stats_ok:
4914 txn->req.msg_state = HTTP_MSG_ERROR;
4915 if (txn->status) {
4916 /* Note: we don't send any error if some data were already sent */
4917 stream_int_retnclose(req->prod, NULL);
4918 } else {
4919 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4920 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4921 }
4922 req->analysers = 0;
4923 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]4924
4925 if (!(s->flags & SN_ERR_MASK))
4926 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4927 if (!(s->flags & SN_FINST_MASK)) {
4928 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4929 s->flags |= SN_FINST_H;
4930 else
4931 s->flags |= SN_FINST_D;
4932 }
4933 return 0;
4934
4935 aborted_xfer:
4936 txn->req.msg_state = HTTP_MSG_ERROR;
4937 if (txn->status) {
4938 /* Note: we don't send any error if some data were already sent */
4939 stream_int_retnclose(req->prod, NULL);
4940 } else {
4941 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4942 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4943 }
4944 req->analysers = 0;
4945 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4946
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4947 s->fe->fe_counters.srv_aborts++;
4948 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4949 if (objt_server(s->target))
4950 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4951
4952 if (!(s->flags & SN_ERR_MASK))
4953 s->flags |= SN_ERR_SRVCL;
4954 if (!(s->flags & SN_FINST_MASK)) {
4955 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4956 s->flags |= SN_FINST_H;
4957 else
4958 s->flags |= SN_FINST_D;
4959 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4960 return 0;
4961}
4962
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4963/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4964 * processing can continue on next analysers, or zero if it either needs more
4965 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4966 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4967 * when it has nothing left to do, and may remove any analyser when it wants to
4968 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4969 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4970int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4971{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4972 struct http_txn *txn = &s->txn;
4973 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4974 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4975 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4976 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4977 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4978
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4979 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]4980 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4981 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4982 rep,
4983 rep->rex, rep->wex,
4984 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4985 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4986 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4987
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4988 /*
4989 * Now parse the partial (or complete) lines.
4990 * We will check the response syntax, and also join multi-line
4991 * headers. An index of all the lines will be elaborated while
4992 * parsing.
4993 *
4994 * For the parsing, we use a 28 states FSM.
4995 *
4996 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4997 * rep->buf->p = beginning of response
4998 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4999 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5000 * msg->eol = end of current header or line (LF or CRLF)
5001 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5002 */
5003
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5004 /* There's a protected area at the end of the buffer for rewriting
5005 * purposes. We don't want to start to parse the request if the
5006 * protected area is affected, because we may have to move processed
5007 * data later, which is much more complicated.
5008 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5009 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5010 if (unlikely(!channel_reserved(rep))) {
5011 /* some data has still not left the buffer, wake us once that's done */
5012 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5013 goto abort_response;
5014 channel_dont_close(rep);
5015 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
5016 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5017 }
5018
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5019 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5020 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5021 buffer_slow_realign(rep->buf);
5022
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5023 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5024 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5025 }
5026
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5027 /* 1: we might have to print this header in debug mode */
5028 if (unlikely((global.mode & MODE_DEBUG) &&
5029 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5030 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5031 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5032
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5033 sol = rep->buf->p;
5034 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5035 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5036
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5037 sol += hdr_idx_first_pos(&txn->hdr_idx);
5038 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5039
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5040 while (cur_idx) {
5041 eol = sol + txn->hdr_idx.v[cur_idx].len;
5042 debug_hdr("srvhdr", s, sol, eol);
5043 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5044 cur_idx = txn->hdr_idx.v[cur_idx].next;
5045 }
5046 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5047
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5048 /*
5049 * Now we quickly check if we have found a full valid response.
5050 * If not so, we check the FD and buffer states before leaving.
5051 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5052 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5053 * responses are checked first.
5054 *
5055 * Depending on whether the client is still there or not, we
5056 * may send an error response back or not. Note that normally
5057 * we should only check for HTTP status there, and check I/O
5058 * errors somewhere else.
5059 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5060
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5061 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5062 /* Invalid response */
5063 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5064 /* we detected a parsing error. We want to archive this response
5065 * in the dedicated proxy area for later troubleshooting.
5066 */
5067 hdr_response_bad:
5068 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5069 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]5070
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5071 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5072 if (objt_server(s->target)) {
5073 objt_server(s->target)->counters.failed_resp++;
5074 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5075 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5076 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5077 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5078 rep->analysers = 0;
5079 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5080 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5081 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5082 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5083
5084 if (!(s->flags & SN_ERR_MASK))
5085 s->flags |= SN_ERR_PRXCOND;
5086 if (!(s->flags & SN_FINST_MASK))
5087 s->flags |= SN_FINST_H;
5088
5089 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5090 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5091
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5092 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5093 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5094 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5095 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5096 goto hdr_response_bad;
5097 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5098
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5099 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5100 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5101 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5102 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]5103
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5104 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5105 if (objt_server(s->target)) {
5106 objt_server(s->target)->counters.failed_resp++;
5107 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5108 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5109
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5110 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5111 rep->analysers = 0;
5112 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5113 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5114 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5115 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5116
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5117 if (!(s->flags & SN_ERR_MASK))
5118 s->flags |= SN_ERR_SRVCL;
5119 if (!(s->flags & SN_FINST_MASK))
5120 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5121 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5122 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5123
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5124 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5125 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5126 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5127 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]5128
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5129 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5130 if (objt_server(s->target)) {
5131 objt_server(s->target)->counters.failed_resp++;
5132 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5133 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5134
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5135 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5136 rep->analysers = 0;
5137 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5138 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5139 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5140 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5141
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5142 if (!(s->flags & SN_ERR_MASK))
5143 s->flags |= SN_ERR_SRVTO;
5144 if (!(s->flags & SN_FINST_MASK))
5145 s->flags |= SN_FINST_H;
5146 return 0;
5147 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5148
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5149 /* client abort with an abortonclose */
5150 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5151 s->fe->fe_counters.cli_aborts++;
5152 s->be->be_counters.cli_aborts++;
5153 if (objt_server(s->target))
5154 objt_server(s->target)->counters.cli_aborts++;
5155
5156 rep->analysers = 0;
5157 channel_auto_close(rep);
5158
5159 txn->status = 400;
5160 bi_erase(rep);
5161 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5162
5163 if (!(s->flags & SN_ERR_MASK))
5164 s->flags |= SN_ERR_CLICL;
5165 if (!(s->flags & SN_FINST_MASK))
5166 s->flags |= SN_FINST_H;
5167
5168 /* process_session() will take care of the error */
5169 return 0;
5170 }
5171
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5172 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5173 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5174 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5175 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]5176
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5177 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5178 if (objt_server(s->target)) {
5179 objt_server(s->target)->counters.failed_resp++;
5180 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5181 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5182
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5183 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5184 rep->analysers = 0;
5185 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5186 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5187 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5188 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5189
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5190 if (!(s->flags & SN_ERR_MASK))
5191 s->flags |= SN_ERR_SRVCL;
5192 if (!(s->flags & SN_FINST_MASK))
5193 s->flags |= SN_FINST_H;
5194 return 0;
5195 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5196
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5197 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5198 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5199 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5200 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]5201
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5202 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5203 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5204 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5205
5206 if (!(s->flags & SN_ERR_MASK))
5207 s->flags |= SN_ERR_CLICL;
5208 if (!(s->flags & SN_FINST_MASK))
5209 s->flags |= SN_FINST_H;
5210
5211 /* process_session() will take care of the error */
5212 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5213 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5214
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5215 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5216 return 0;
5217 }
5218
5219 /* More interesting part now : we know that we have a complete
5220 * response which at least looks like HTTP. We have an indicator
5221 * of each header's length, so we can parse them quickly.
5222 */
5223
5224 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5225 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]5226
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5227 /*
5228 * 1: get the status code
5229 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5230 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5231 if (n < 1 || n > 5)
5232 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5233 /* when the client triggers a 4xx from the server, it's most often due
5234 * to a missing object or permission. These events should be tracked
5235 * because if they happen often, it may indicate a brute force or a
5236 * vulnerability scan.
5237 */
5238 if (n == 4)
5239 session_inc_http_err_ctr(s);
5240
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5241 if (objt_server(s->target))
5242 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5243
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5244 /* check if the response is HTTP/1.1 or above */
5245 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5246 ((rep->buf->p[5] > '1') ||
5247 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5248 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5249
5250 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5251 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]5252
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5253 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5254 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5255
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5256 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]5257
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5258 /* Adjust server's health based on status code. Note: status codes 501
5259 * and 505 are triggered on demand by client request, so we must not
5260 * count them as server failures.
5261 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5262 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5263 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5264 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5265 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5266 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5267 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5268
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5269 /*
5270 * 2: check for cacheability.
5271 */
5272
5273 switch (txn->status) {
5274 case 200:
5275 case 203:
5276 case 206:
5277 case 300:
5278 case 301:
5279 case 410:
5280 /* RFC2616 @13.4:
5281 * "A response received with a status code of
5282 * 200, 203, 206, 300, 301 or 410 MAY be stored
5283 * by a cache (...) unless a cache-control
5284 * directive prohibits caching."
5285 *
5286 * RFC2616 @9.5: POST method :
5287 * "Responses to this method are not cacheable,
5288 * unless the response includes appropriate
5289 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5290 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5291 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5292 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5293 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5294 break;
5295 default:
5296 break;
5297 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5298
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5299 /*
5300 * 3: we may need to capture headers
5301 */
5302 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5303 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5304 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5305 txn->rsp.cap, s->fe->rsp_cap);
5306
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5307 /* 4: determine the transfer-length.
5308 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5309 * the presence of a message-body in a RESPONSE and its transfer length
5310 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5311 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5312 * All responses to the HEAD request method MUST NOT include a
5313 * message-body, even though the presence of entity-header fields
5314 * might lead one to believe they do. All 1xx (informational), 204
5315 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5316 * message-body. All other responses do include a message-body,
5317 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5318 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5319 * 1. Any response which "MUST NOT" include a message-body (such as the
5320 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5321 * always terminated by the first empty line after the header fields,
5322 * regardless of the entity-header fields present in the message.
5323 *
5324 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5325 * the "chunked" transfer-coding (Section 6.2) is used, the
5326 * transfer-length is defined by the use of this transfer-coding.
5327 * If a Transfer-Encoding header field is present and the "chunked"
5328 * transfer-coding is not present, the transfer-length is defined by
5329 * the sender closing the connection.
5330 *
5331 * 3. If a Content-Length header field is present, its decimal value in
5332 * OCTETs represents both the entity-length and the transfer-length.
5333 * If a message is received with both a Transfer-Encoding header
5334 * field and a Content-Length header field, the latter MUST be ignored.
5335 *
5336 * 4. If the message uses the media type "multipart/byteranges", and
5337 * the transfer-length is not otherwise specified, then this self-
5338 * delimiting media type defines the transfer-length. This media
5339 * type MUST NOT be used unless the sender knows that the recipient
5340 * can parse it; the presence in a request of a Range header with
5341 * multiple byte-range specifiers from a 1.1 client implies that the
5342 * client can parse multipart/byteranges responses.
5343 *
5344 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5345 */
5346
5347 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5348 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5349 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5350 * FIXME: should we parse anyway and return an error on chunked encoding ?
5351 */
5352 if (txn->meth == HTTP_METH_HEAD ||
5353 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5354 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5355 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5356 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5357 goto skip_content_length;
5358 }
5359
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5360 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5361 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5362 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5363 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5364 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5365 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5366 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5367 /* bad transfer-encoding (chunked followed by something else) */
5368 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5369 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5370 break;
5371 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5372 }
5373
5374 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5375 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5376 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5377 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5378 signed long long cl;
5379
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5380 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5381 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5382 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5383 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5384
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5385 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5386 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5387 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5388 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5389
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5390 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5391 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5392 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5393 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5394
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5395 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5396 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5397 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5398 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5399
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5400 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5401 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5402 }
5403
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5404 if (s->fe->comp || s->be->comp)
5405 select_compression_response_header(s, rep->buf);
5406
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5407 /* FIXME: we should also implement the multipart/byterange method.
5408 * For now on, we resort to close mode in this case (unknown length).
5409 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5410skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5411
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5412 /* end of job, return OK */
5413 rep->analysers &= ~an_bit;
5414 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5415 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5416 return 1;
5417}
5418
5419/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5420 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5421 * and updates t->rep->analysers. It might make sense to explode it into several
5422 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5423 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5424int 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]5425{
5426 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5427 struct http_msg *msg = &txn->rsp;
5428 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5429 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5430 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5431
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5432 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]5433 now_ms, __FUNCTION__,
5434 t,
5435 rep,
5436 rep->rex, rep->wex,
5437 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5438 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5439 rep->analysers);
5440
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5441 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5442 return 0;
5443
5444 rep->analysers &= ~an_bit;
5445 rep->analyse_exp = TICK_ETERNITY;
5446
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5447 /* Now we have to check if we need to modify the Connection header.
5448 * This is more difficult on the response than it is on the request,
5449 * because we can have two different HTTP versions and we don't know
5450 * how the client will interprete a response. For instance, let's say
5451 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5452 * HTTP/1.1 response without any header. Maybe it will bound itself to
5453 * HTTP/1.0 because it only knows about it, and will consider the lack
5454 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5455 * the lack of header as a keep-alive. Thus we will use two flags
5456 * indicating how a request MAY be understood by the client. In case
5457 * of multiple possibilities, we'll fix the header to be explicit. If
5458 * ambiguous cases such as both close and keepalive are seen, then we
5459 * will fall back to explicit close. Note that we won't take risks with
5460 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5461 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5462 */
5463
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5464 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5465 txn->status == 101)) {
5466 /* Either we've established an explicit tunnel, or we're
5467 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5468 * to understand the next protocols. We have to switch to tunnel
5469 * mode, so that we transfer the request and responses then let
5470 * this protocol pass unmodified. When we later implement specific
5471 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5472 * header which contains information about that protocol for
5473 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5474 */
5475 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5476 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5477 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5478 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5479 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5480 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5481
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5482 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5483 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5484 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5485 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5486
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5487 /* now adjust header transformations depending on current state */
5488 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5489 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5490 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5491 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5492 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5493 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5494 else { /* SCL / KAL */
5495 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5496 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5497 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5498 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5499
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5500 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5501 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5502
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5503 /* Some keep-alive responses are converted to Server-close if
5504 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5505 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5506 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5507 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5508 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5509 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5510 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5511 }
5512
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5513 /* we want to have the response time before we start processing it */
5514 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5515
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5516 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5517 /*
5518 * 3: we will have to evaluate the filters.
5519 * As opposed to version 1.2, now they will be evaluated in the
5520 * filters order and not in the header order. This means that
5521 * each filter has to be validated among all headers.
5522 *
5523 * Filters are tried with ->be first, then with ->fe if it is
5524 * different from ->be.
5525 */
5526
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5527 cur_proxy = t->be;
5528 while (1) {
5529 struct proxy *rule_set = cur_proxy;
5530
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5531 /* evaluate http-response rules */
5532 if (!http_res_last_rule)
5533 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5534
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5535 /* try headers filters */
5536 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5537 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5538 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5539 if (objt_server(t->target)) {
5540 objt_server(t->target)->counters.failed_resp++;
5541 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5542 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5543 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5544 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5545 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5546 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5547 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5548 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5549 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5550 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5551 if (!(t->flags & SN_ERR_MASK))
5552 t->flags |= SN_ERR_PRXCOND;
5553 if (!(t->flags & SN_FINST_MASK))
5554 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5555 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5556 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5557 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5558
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5559 /* has the response been denied ? */
5560 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5561 if (objt_server(t->target))
5562 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5563
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5564 t->be->be_counters.denied_resp++;
5565 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5566 if (t->listener->counters)
5567 t->listener->counters->denied_resp++;
5568
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5569 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5570 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5571
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5572 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5573 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5574 if (txn->status < 200)
5575 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5576 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5577 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]5578 ret = acl_pass(ret);
5579 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5580 ret = !ret;
5581 if (!ret)
5582 continue;
5583 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5584 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5585 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5586 }
5587
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5588 /* check whether we're already working on the frontend */
5589 if (cur_proxy == t->fe)
5590 break;
5591 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5592 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5593
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5594 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5595 * We may be facing a 100-continue response, in which case this
5596 * is not the right response, and we're waiting for the next one.
5597 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5598 * next one.
5599 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5600 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5601 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5602 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5603 msg->msg_state = HTTP_MSG_RPBEFORE;
5604 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5605 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5606 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5607 return 1;
5608 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5609 else if (unlikely(txn->status < 200))
5610 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5611
5612 /* we don't have any 1xx status code now */
5613
5614 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5615 * 4: check for server cookie.
5616 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5617 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5618 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5619 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5620
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5621
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5622 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5623 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5624 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5625 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]5626 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5627
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5628 /*
5629 * 6: add server cookie in the response if needed
5630 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5631 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5632 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5633 (!(t->flags & SN_DIRECT) ||
5634 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5635 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5636 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5637 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5638 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5639 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5640 /* the server is known, it's not the one the client requested, or the
5641 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5642 * insert a set-cookie here, except if we want to insert only on POST
5643 * requests and this one isn't. Note that servers which don't have cookies
5644 * (eg: some backup servers) will return a full cookie removal request.
5645 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5646 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5647 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5648 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5649 t->be->cookie_name);
5650 }
5651 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5652 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]5653
5654 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5655 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5656 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5657 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5658 trash.len += 5;
5659
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5660 if (t->be->cookie_maxlife) {
5661 /* emit first_date, which is either the original one or
5662 * the current date.
5663 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5664 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5665 s30tob64(txn->cookie_first_date ?
5666 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5667 (date.tv_sec+3) >> 2, trash.str + trash.len);
5668 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5669 }
5670 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5671 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5672 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5673
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5674 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5675 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5676
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5677 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5678 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5679
5680 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5681 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5682
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5683 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]5684 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5685
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5686 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5687 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5688 /* the server did not change, only the date was updated */
5689 txn->flags |= TX_SCK_UPDATED;
5690 else
5691 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5692
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5693 /* Here, we will tell an eventual cache on the client side that we don't
5694 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5695 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5696 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5697 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5698 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5699
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5700 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5701
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5702 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5703 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5704 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5705 }
5706 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5707
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5708 /*
5709 * 7: check if result will be cacheable with a cookie.
5710 * We'll block the response if security checks have caught
5711 * nasty things such as a cacheable cookie.
5712 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5713 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5714 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5715 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5716
5717 /* we're in presence of a cacheable response containing
5718 * a set-cookie header. We'll block it as requested by
5719 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5720 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5721 if (objt_server(t->target))
5722 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5723
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5724 t->be->be_counters.denied_resp++;
5725 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5726 if (t->listener->counters)
5727 t->listener->counters->denied_resp++;
5728
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5729 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5730 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5731 send_log(t->be, LOG_ALERT,
5732 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5733 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5734 goto return_srv_prx_502;
5735 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5736
5737 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5738 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5739 * If an "Upgrade" token is found, the header is left untouched in order
5740 * not to have to deal with some client bugs : some of them fail an upgrade
5741 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5742 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5743 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5744 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5745 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5746 unsigned int want_flags = 0;
5747
5748 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5749 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5750 /* we want a keep-alive response here. Keep-alive header
5751 * required if either side is not 1.1.
5752 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5753 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5754 want_flags |= TX_CON_KAL_SET;
5755 }
5756 else {
5757 /* we want a close response here. Close header required if
5758 * the server is 1.1, regardless of the client.
5759 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5760 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5761 want_flags |= TX_CON_CLO_SET;
5762 }
5763
5764 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5765 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5766 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5767
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5768 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5769 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5770 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5771 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5772
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5773 /*************************************************************
5774 * OK, that's finished for the headers. We have done what we *
5775 * could. Let's switch to the DATA state. *
5776 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5777
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5778 /* if the user wants to log as soon as possible, without counting
5779 * bytes from the server, then this is the right moment. We have
5780 * to temporarily assign bytes_out to log what we currently have.
5781 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5782 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5783 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5784 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5785 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5786 t->logs.bytes_out = 0;
5787 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5788
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5789 /* Note: we must not try to cheat by jumping directly to DATA,
5790 * otherwise we would not let the client side wake up.
5791 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5792
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5793 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5794 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5795 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5796}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5797
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5798/* This function is an analyser which forwards response body (including chunk
5799 * sizes if any). It is called as soon as we must forward, even if we forward
5800 * zero byte. The only situation where it must not be called is when we're in
5801 * tunnel mode and we want to forward till the close. It's used both to forward
5802 * remaining data and to resync after end of body. It expects the msg_state to
5803 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5804 * 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]5805 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5806 * bytes of pending data + the headers if not already done (between sol and sov).
5807 * 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]5808 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5809int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5810{
5811 struct http_txn *txn = &s->txn;
5812 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5813 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5814 static struct buffer *tmpbuf = NULL;
5815 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5816 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5817 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5818
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5819 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5820 return 0;
5821
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5822 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]5823 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5824 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5825 /* Output closed while we were sending data. We must abort and
5826 * wake the other side up.
5827 */
5828 msg->msg_state = HTTP_MSG_ERROR;
5829 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5830 return 1;
5831 }
5832
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5833 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5834 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5835
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5836 /* this is the first time we need the compression buffer */
5837 if (s->comp_algo != NULL && tmpbuf == NULL) {
5838 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5839 goto aborted_xfer; /* no memory */
5840 }
5841
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5842 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5843 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5844 * rep->buf.p still points to the beginning of the message and msg->sol
5845 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5846 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5847 channel_forward(res, msg->sov);
5848 msg->next = 0;
5849 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5850
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5851 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5852 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5853 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5854 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5855 }
5856
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5857 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5858 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5859 if (ret < 0)
5860 goto missing_data; /* not enough spaces in buffers */
5861 compressing = 1;
5862 }
5863
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5864 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5865 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5866 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5867 if (s->comp_algo == NULL) {
5868 bytes = msg->sov - msg->sol;
5869 if (msg->chunk_len || bytes) {
5870 msg->sol = msg->sov;
5871 msg->next -= bytes; /* will be forwarded */
5872 msg->chunk_len += bytes;
5873 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5874 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5875 }
5876
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5877 switch (msg->msg_state - HTTP_MSG_DATA) {
5878 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5879 if (compressing) {
5880 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5881 if (ret < 0)
5882 goto aborted_xfer;
5883 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5884
5885 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5886 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5887
5888 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5889 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5890 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5891 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5892 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5893 if (compressing && consumed_data) {
5894 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5895 compressing = 0;
5896 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5897 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5898 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5899 /* fall through for HTTP_MSG_CHUNK_CRLF */
5900
5901 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
5902 /* we want the CRLF after the data */
5903
5904 ret = http_skip_chunk_crlf(msg);
5905 if (ret == 0)
5906 goto missing_data;
5907 else if (ret < 0) {
5908 if (msg->err_pos >= 0)
5909 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
5910 goto return_bad_res;
5911 }
5912 /* skipping data in buffer for compression */
5913 if (compressing) {
5914 b_adv(res->buf, msg->next);
5915 msg->next = 0;
5916 msg->sov = 0;
5917 msg->sol = 0;
5918 }
5919 /* we're in MSG_CHUNK_SIZE now, fall through */
5920
5921 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5922 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5923 * set ->sov and ->next to point to the body and switch to DATA or
5924 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5925 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5926
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5927 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5928 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5929 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5930 else if (ret < 0) {
5931 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5932 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]5933 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5934 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5935 if (compressing) {
5936 if (likely(msg->chunk_len > 0)) {
5937 /* skipping data if we are in compression mode */
5938 b_adv(res->buf, msg->next);
5939 msg->next = 0;
5940 msg->sov = 0;
5941 msg->sol = 0;
5942 } else {
5943 if (consumed_data) {
5944 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5945 compressing = 0;
5946 }
5947 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5948 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]5949 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5950 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5951
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5952 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
5953 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5954 if (ret == 0)
5955 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5956 else if (ret < 0) {
5957 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5958 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]5959 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5960 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5961 if (s->comp_algo != NULL) {
5962 /* forwarding trailers */
5963 channel_forward(res, msg->next);
5964 msg->next = 0;
5965 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]5966 /* we're in HTTP_MSG_DONE now, but we might still have
5967 * some data pending, so let's loop over once.
5968 */
5969 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5970
5971 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5972 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5973
5974 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5975 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5976 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5977 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5978 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5979 if (http_resync_states(s)) {
5980 http_silent_debug(__LINE__, s);
5981 /* some state changes occurred, maybe the analyser
5982 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5983 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5984 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5985 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5986 /* response errors are most likely due to
5987 * the client aborting the transfer.
5988 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5989 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5990 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5991 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5992 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5993 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5994 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5995 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5996 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5997 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5998 }
5999 }
6000
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6001 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6002 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6003 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6004 compressing = 0;
6005 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6006
6007 if (res->flags & CF_SHUTW)
6008 goto aborted_xfer;
6009
6010 /* stop waiting for data if the input is closed before the end. If the
6011 * client side was already closed, it means that the client has aborted,
6012 * so we don't want to count this as a server abort. Otherwise it's a
6013 * server abort.
6014 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6015 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6016 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6017 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6018 if (!(s->flags & SN_ERR_MASK))
6019 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6020 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6021 if (objt_server(s->target))
6022 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6023 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6024 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6025
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6026 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6027 if (!s->req->analysers)
6028 goto return_bad_res;
6029
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6030 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6031 if (s->comp_algo == NULL) {
6032 bytes = msg->sov - msg->sol;
6033 if (msg->chunk_len || bytes) {
6034 msg->sol = msg->sov;
6035 msg->next -= bytes; /* will be forwarded */
6036 msg->chunk_len += bytes;
6037 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6038 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6039 }
6040
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6041 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6042 * 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]6043 * Similarly, with keep-alive on the client side, we don't want to forward a
6044 * close.
6045 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6046 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6047 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6048 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6049 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6050
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6051 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6052 * 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]6053 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6054 * modes are already handled by the stream sock layer. We must not do
6055 * this in content-length mode because it could present the MSG_MORE
6056 * flag with the last block of forwarded data, which would cause an
6057 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6058 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6059 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6060 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6061
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6062 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6063 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6064 return 0;
6065
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6066 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6067 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6068 if (objt_server(s->target))
6069 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6070
6071 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6072 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6073 /* don't send any error message as we're in the body */
6074 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6075 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6076 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]6077 if (objt_server(s->target))
6078 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6079
6080 if (!(s->flags & SN_ERR_MASK))
6081 s->flags |= SN_ERR_PRXCOND;
6082 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6083 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6084 return 0;
6085
6086 aborted_xfer:
6087 txn->rsp.msg_state = HTTP_MSG_ERROR;
6088 /* don't send any error message as we're in the body */
6089 stream_int_retnclose(res->cons, NULL);
6090 res->analysers = 0;
6091 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6092
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6093 s->fe->fe_counters.cli_aborts++;
6094 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6095 if (objt_server(s->target))
6096 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6097
6098 if (!(s->flags & SN_ERR_MASK))
6099 s->flags |= SN_ERR_CLICL;
6100 if (!(s->flags & SN_FINST_MASK))
6101 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6102 return 0;
6103}
6104
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6105/* Iterate the same filter through all request headers.
6106 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6107 * Since it can manage the switch to another backend, it updates the per-proxy
6108 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6109 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6110int 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]6111{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6112 char term;
6113 char *cur_ptr, *cur_end, *cur_next;
6114 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6115 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6116 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6117 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6118
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6119 last_hdr = 0;
6120
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6121 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6122 old_idx = 0;
6123
6124 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6125 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6126 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6127 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6128 (exp->action == ACT_ALLOW ||
6129 exp->action == ACT_DENY ||
6130 exp->action == ACT_TARPIT))
6131 return 0;
6132
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6133 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6134 if (!cur_idx)
6135 break;
6136
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6137 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6138 cur_ptr = cur_next;
6139 cur_end = cur_ptr + cur_hdr->len;
6140 cur_next = cur_end + cur_hdr->cr + 1;
6141
6142 /* Now we have one header between cur_ptr and cur_end,
6143 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6144 */
6145
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6146 /* The annoying part is that pattern matching needs
6147 * that we modify the contents to null-terminate all
6148 * strings before testing them.
6149 */
6150
6151 term = *cur_end;
6152 *cur_end = '\0';
6153
6154 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6155 switch (exp->action) {
6156 case ACT_SETBE:
6157 /* It is not possible to jump a second time.
6158 * FIXME: should we return an HTTP/500 here so that
6159 * the admin knows there's a problem ?
6160 */
6161 if (t->be != t->fe)
6162 break;
6163
6164 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6165 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6166 last_hdr = 1;
6167 break;
6168
6169 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6170 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6171 last_hdr = 1;
6172 break;
6173
6174 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6175 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6176 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6177 break;
6178
6179 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6180 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6181 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6182 break;
6183
6184 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6185 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6186 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6187 /* FIXME: if the user adds a newline in the replacement, the
6188 * index will not be recalculated for now, and the new line
6189 * will not be counted as a new header.
6190 */
6191
6192 cur_end += delta;
6193 cur_next += delta;
6194 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6195 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6196 break;
6197
6198 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6199 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6200 cur_next += delta;
6201
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6202 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6203 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6204 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6205 cur_hdr->len = 0;
6206 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6207 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6208 break;
6209
6210 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6211 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6212 if (cur_end)
6213 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6214
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6215 /* keep the link from this header to next one in case of later
6216 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6217 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6218 old_idx = cur_idx;
6219 }
6220 return 0;
6221}
6222
6223
6224/* Apply the filter to the request line.
6225 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6226 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6227 * Since it can manage the switch to another backend, it updates the per-proxy
6228 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6229 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6230int 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]6231{
6232 char term;
6233 char *cur_ptr, *cur_end;
6234 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6235 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6236 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6237
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6238 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6239 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6240 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6241 (exp->action == ACT_ALLOW ||
6242 exp->action == ACT_DENY ||
6243 exp->action == ACT_TARPIT))
6244 return 0;
6245 else if (exp->action == ACT_REMOVE)
6246 return 0;
6247
6248 done = 0;
6249
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6250 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6251 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6252
6253 /* Now we have the request line between cur_ptr and cur_end */
6254
6255 /* The annoying part is that pattern matching needs
6256 * that we modify the contents to null-terminate all
6257 * strings before testing them.
6258 */
6259
6260 term = *cur_end;
6261 *cur_end = '\0';
6262
6263 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6264 switch (exp->action) {
6265 case ACT_SETBE:
6266 /* It is not possible to jump a second time.
6267 * FIXME: should we return an HTTP/500 here so that
6268 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6269 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6270 if (t->be != t->fe)
6271 break;
6272
6273 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6274 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6275 done = 1;
6276 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6277
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6278 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6279 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6280 done = 1;
6281 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6282
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6283 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6284 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6285 done = 1;
6286 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6287
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6288 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6289 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6290 done = 1;
6291 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6292
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6293 case ACT_REPLACE:
6294 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6295 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6296 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6297 /* FIXME: if the user adds a newline in the replacement, the
6298 * index will not be recalculated for now, and the new line
6299 * will not be counted as a new header.
6300 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6301
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6302 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6303 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6304 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6305 HTTP_MSG_RQMETH,
6306 cur_ptr, cur_end + 1,
6307 NULL, NULL);
6308 if (unlikely(!cur_end))
6309 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6311 /* we have a full request and we know that we have either a CR
6312 * or an LF at <ptr>.
6313 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6314 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6315 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]6316 /* there is no point trying this regex on headers */
6317 return 1;
6318 }
6319 }
6320 *cur_end = term; /* restore the string terminator */
6321 return done;
6322}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6323
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6324
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6325
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6326/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6327 * 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]6328 * 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]6329 * unparsable request. Since it can manage the switch to another backend, it
6330 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6331 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6332int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6333{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6334 struct http_txn *txn = &s->txn;
6335 struct hdr_exp *exp;
6336
6337 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6338 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6339
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6340 /*
6341 * The interleaving of transformations and verdicts
6342 * makes it difficult to decide to continue or stop
6343 * the evaluation.
6344 */
6345
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6346 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6347 break;
6348
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6349 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6350 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6351 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6352 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6353
6354 /* if this filter had a condition, evaluate it now and skip to
6355 * next filter if the condition does not match.
6356 */
6357 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6358 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]6359 ret = acl_pass(ret);
6360 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6361 ret = !ret;
6362
6363 if (!ret)
6364 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6365 }
6366
6367 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6368 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6369 if (unlikely(ret < 0))
6370 return -1;
6371
6372 if (likely(ret == 0)) {
6373 /* The filter did not match the request, it can be
6374 * iterated through all headers.
6375 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6376 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6377 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6378 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6379 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6380}
6381
6382
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6383
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6384/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6385 * Try to retrieve the server associated to the appsession.
6386 * If the server is found, it's assigned to the session.
6387 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6388void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6389 struct http_txn *txn = &t->txn;
6390 appsess *asession = NULL;
6391 char *sessid_temp = NULL;
6392
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6393 if (len > t->be->appsession_len) {
6394 len = t->be->appsession_len;
6395 }
6396
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6397 if (t->be->options2 & PR_O2_AS_REQL) {
6398 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6399 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6400 /* 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]6401 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6402 }
6403
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6404 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6405 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6406 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6407 return;
6408 }
6409
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6410 memcpy(txn->sessid, buf, len);
6411 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6412 }
6413
6414 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6415 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6416 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6417 return;
6418 }
6419
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6420 memcpy(sessid_temp, buf, len);
6421 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6422
6423 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6424 /* free previously allocated memory */
6425 pool_free2(apools.sessid, sessid_temp);
6426
6427 if (asession != NULL) {
6428 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6429 if (!(t->be->options2 & PR_O2_AS_REQL))
6430 asession->request_count++;
6431
6432 if (asession->serverid != NULL) {
6433 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6434
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6435 while (srv) {
6436 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6437 if ((srv->state & SRV_RUNNING) ||
6438 (t->be->options & PR_O_PERSIST) ||
6439 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6440 /* we found the server and it's usable */
6441 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6442 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6443 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6444 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6445
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6446 break;
6447 } else {
6448 txn->flags &= ~TX_CK_MASK;
6449 txn->flags |= TX_CK_DOWN;
6450 }
6451 }
6452 srv = srv->next;
6453 }
6454 }
6455 }
6456}
6457
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6458/* Find the end of a cookie value contained between <s> and <e>. It works the
6459 * same way as with headers above except that the semi-colon also ends a token.
6460 * See RFC2965 for more information. Note that it requires a valid header to
6461 * return a valid result.
6462 */
6463char *find_cookie_value_end(char *s, const char *e)
6464{
6465 int quoted, qdpair;
6466
6467 quoted = qdpair = 0;
6468 for (; s < e; s++) {
6469 if (qdpair) qdpair = 0;
6470 else if (quoted) {
6471 if (*s == '\\') qdpair = 1;
6472 else if (*s == '"') quoted = 0;
6473 }
6474 else if (*s == '"') quoted = 1;
6475 else if (*s == ',' || *s == ';') return s;
6476 }
6477 return s;
6478}
6479
6480/* Delete a value in a header between delimiters <from> and <next> in buffer
6481 * <buf>. The number of characters displaced is returned, and the pointer to
6482 * the first delimiter is updated if required. The function tries as much as
6483 * possible to respect the following principles :
6484 * - replace <from> delimiter by the <next> one unless <from> points to a
6485 * colon, in which case <next> is simply removed
6486 * - set exactly one space character after the new first delimiter, unless
6487 * there are not enough characters in the block being moved to do so.
6488 * - remove unneeded spaces before the previous delimiter and after the new
6489 * one.
6490 *
6491 * It is the caller's responsibility to ensure that :
6492 * - <from> points to a valid delimiter or the colon ;
6493 * - <next> points to a valid delimiter or the final CR/LF ;
6494 * - there are non-space chars before <from> ;
6495 * - there is a CR/LF at or after <next>.
6496 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6497int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6498{
6499 char *prev = *from;
6500
6501 if (*prev == ':') {
6502 /* We're removing the first value, preserve the colon and add a
6503 * space if possible.
6504 */
6505 if (!http_is_crlf[(unsigned char)*next])
6506 next++;
6507 prev++;
6508 if (prev < next)
6509 *prev++ = ' ';
6510
6511 while (http_is_spht[(unsigned char)*next])
6512 next++;
6513 } else {
6514 /* Remove useless spaces before the old delimiter. */
6515 while (http_is_spht[(unsigned char)*(prev-1)])
6516 prev--;
6517 *from = prev;
6518
6519 /* copy the delimiter and if possible a space if we're
6520 * not at the end of the line.
6521 */
6522 if (!http_is_crlf[(unsigned char)*next]) {
6523 *prev++ = *next++;
6524 if (prev + 1 < next)
6525 *prev++ = ' ';
6526 while (http_is_spht[(unsigned char)*next])
6527 next++;
6528 }
6529 }
6530 return buffer_replace2(buf, prev, next, NULL, 0);
6531}
6532
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6533/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6534 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6535 * desirable to call it only when needed. This code is quite complex because
6536 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6537 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6538 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6539void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6540{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6541 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6542 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6543 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6544 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6545 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6546
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6547 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6548 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6549 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6550
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6551 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6552 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6553 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6554
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6555 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6556 hdr_beg = hdr_next;
6557 hdr_end = hdr_beg + cur_hdr->len;
6558 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6559
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6560 /* We have one full header between hdr_beg and hdr_end, and the
6561 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6562 * "Cookie:" headers.
6563 */
6564
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6565 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6566 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6567 old_idx = cur_idx;
6568 continue;
6569 }
6570
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6571 del_from = NULL; /* nothing to be deleted */
6572 preserve_hdr = 0; /* assume we may kill the whole header */
6573
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6574 /* Now look for cookies. Conforming to RFC2109, we have to support
6575 * attributes whose name begin with a '$', and associate them with
6576 * the right cookie, if we want to delete this cookie.
6577 * So there are 3 cases for each cookie read :
6578 * 1) it's a special attribute, beginning with a '$' : ignore it.
6579 * 2) it's a server id cookie that we *MAY* want to delete : save
6580 * some pointers on it (last semi-colon, beginning of cookie...)
6581 * 3) it's an application cookie : we *MAY* have to delete a previous
6582 * "special" cookie.
6583 * At the end of loop, if a "special" cookie remains, we may have to
6584 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6585 * *MUST* delete it.
6586 *
6587 * Note: RFC2965 is unclear about the processing of spaces around
6588 * the equal sign in the ATTR=VALUE form. A careful inspection of
6589 * the RFC explicitly allows spaces before it, and not within the
6590 * tokens (attrs or values). An inspection of RFC2109 allows that
6591 * too but section 10.1.3 lets one think that spaces may be allowed
6592 * after the equal sign too, resulting in some (rare) buggy
6593 * implementations trying to do that. So let's do what servers do.
6594 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6595 * allowed quoted strings in values, with any possible character
6596 * after a backslash, including control chars and delimitors, which
6597 * causes parsing to become ambiguous. Browsers also allow spaces
6598 * within values even without quotes.
6599 *
6600 * We have to keep multiple pointers in order to support cookie
6601 * removal at the beginning, middle or end of header without
6602 * corrupting the header. All of these headers are valid :
6603 *
6604 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6605 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6606 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6607 * | | | | | | | | |
6608 * | | | | | | | | hdr_end <--+
6609 * | | | | | | | +--> next
6610 * | | | | | | +----> val_end
6611 * | | | | | +-----------> val_beg
6612 * | | | | +--------------> equal
6613 * | | | +----------------> att_end
6614 * | | +---------------------> att_beg
6615 * | +--------------------------> prev
6616 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6617 */
6618
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6619 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6620 /* Iterate through all cookies on this line */
6621
6622 /* find att_beg */
6623 att_beg = prev + 1;
6624 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6625 att_beg++;
6626
6627 /* find att_end : this is the first character after the last non
6628 * space before the equal. It may be equal to hdr_end.
6629 */
6630 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6631
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6632 while (equal < hdr_end) {
6633 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6634 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6635 if (http_is_spht[(unsigned char)*equal++])
6636 continue;
6637 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6638 }
6639
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6640 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6641 * is between <att_beg> and <equal>, both may be identical.
6642 */
6643
6644 /* look for end of cookie if there is an equal sign */
6645 if (equal < hdr_end && *equal == '=') {
6646 /* look for the beginning of the value */
6647 val_beg = equal + 1;
6648 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6649 val_beg++;
6650
6651 /* find the end of the value, respecting quotes */
6652 next = find_cookie_value_end(val_beg, hdr_end);
6653
6654 /* make val_end point to the first white space or delimitor after the value */
6655 val_end = next;
6656 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6657 val_end--;
6658 } else {
6659 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6660 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6661
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6662 /* We have nothing to do with attributes beginning with '$'. However,
6663 * they will automatically be removed if a header before them is removed,
6664 * since they're supposed to be linked together.
6665 */
6666 if (*att_beg == '$')
6667 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6668
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6669 /* Ignore cookies with no equal sign */
6670 if (equal == next) {
6671 /* This is not our cookie, so we must preserve it. But if we already
6672 * scheduled another cookie for removal, we cannot remove the
6673 * complete header, but we can remove the previous block itself.
6674 */
6675 preserve_hdr = 1;
6676 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6677 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6678 val_end += delta;
6679 next += delta;
6680 hdr_end += delta;
6681 hdr_next += delta;
6682 cur_hdr->len += delta;
6683 http_msg_move_end(&txn->req, delta);
6684 prev = del_from;
6685 del_from = NULL;
6686 }
6687 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6688 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6689
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6690 /* if there are spaces around the equal sign, we need to
6691 * strip them otherwise we'll get trouble for cookie captures,
6692 * or even for rewrites. Since this happens extremely rarely,
6693 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6694 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6695 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6696 int stripped_before = 0;
6697 int stripped_after = 0;
6698
6699 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6700 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6701 equal += stripped_before;
6702 val_beg += stripped_before;
6703 }
6704
6705 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6706 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6707 val_beg += stripped_after;
6708 stripped_before += stripped_after;
6709 }
6710
6711 val_end += stripped_before;
6712 next += stripped_before;
6713 hdr_end += stripped_before;
6714 hdr_next += stripped_before;
6715 cur_hdr->len += stripped_before;
6716 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6717 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6718 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6719
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6720 /* First, let's see if we want to capture this cookie. We check
6721 * that we don't already have a client side cookie, because we
6722 * can only capture one. Also as an optimisation, we ignore
6723 * cookies shorter than the declared name.
6724 */
6725 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6726 (val_end - att_beg >= t->fe->capture_namelen) &&
6727 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6728 int log_len = val_end - att_beg;
6729
6730 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6731 Alert("HTTP logging : out of memory.\n");
6732 } else {
6733 if (log_len > t->fe->capture_len)
6734 log_len = t->fe->capture_len;
6735 memcpy(txn->cli_cookie, att_beg, log_len);
6736 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6737 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6738 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6739
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6740 /* Persistence cookies in passive, rewrite or insert mode have the
6741 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6742 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6743 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6744 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6745 * For cookies in prefix mode, the form is :
6746 *
6747 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6748 */
6749 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6750 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6751 struct server *srv = t->be->srv;
6752 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6753
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6754 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6755 * have the server ID between val_beg and delim, and the original cookie between
6756 * delim+1 and val_end. Otherwise, delim==val_end :
6757 *
6758 * Cookie: NAME=SRV; # in all but prefix modes
6759 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6760 * | || || | |+-> next
6761 * | || || | +--> val_end
6762 * | || || +---------> delim
6763 * | || |+------------> val_beg
6764 * | || +-------------> att_end = equal
6765 * | |+-----------------> att_beg
6766 * | +------------------> prev
6767 * +-------------------------> hdr_beg
6768 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6769
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6770 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6771 for (delim = val_beg; delim < val_end; delim++)
6772 if (*delim == COOKIE_DELIM)
6773 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6774 } else {
6775 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6776 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6777 /* Now check if the cookie contains a date field, which would
6778 * appear after a vertical bar ('|') just after the server name
6779 * and before the delimiter.
6780 */
6781 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6782 if (vbar1) {
6783 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6784 * right is the last seen date. It is a base64 encoded
6785 * 30-bit value representing the UNIX date since the
6786 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6787 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6788 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6789 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6790 if (val_end - vbar1 >= 5) {
6791 val = b64tos30(vbar1);
6792 if (val > 0)
6793 txn->cookie_last_date = val << 2;
6794 }
6795 /* look for a second vertical bar */
6796 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6797 if (vbar1 && (val_end - vbar1 > 5)) {
6798 val = b64tos30(vbar1 + 1);
6799 if (val > 0)
6800 txn->cookie_first_date = val << 2;
6801 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6802 }
6803 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6804
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6805 /* if the cookie has an expiration date and the proxy wants to check
6806 * it, then we do that now. We first check if the cookie is too old,
6807 * then only if it has expired. We detect strict overflow because the
6808 * time resolution here is not great (4 seconds). Cookies with dates
6809 * in the future are ignored if their offset is beyond one day. This
6810 * allows an admin to fix timezone issues without expiring everyone
6811 * and at the same time avoids keeping unwanted side effects for too
6812 * long.
6813 */
6814 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6815 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6816 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6817 txn->flags &= ~TX_CK_MASK;
6818 txn->flags |= TX_CK_OLD;
6819 delim = val_beg; // let's pretend we have not found the cookie
6820 txn->cookie_first_date = 0;
6821 txn->cookie_last_date = 0;
6822 }
6823 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6824 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6825 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6826 txn->flags &= ~TX_CK_MASK;
6827 txn->flags |= TX_CK_EXPIRED;
6828 delim = val_beg; // let's pretend we have not found the cookie
6829 txn->cookie_first_date = 0;
6830 txn->cookie_last_date = 0;
6831 }
6832
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6833 /* Here, we'll look for the first running server which supports the cookie.
6834 * This allows to share a same cookie between several servers, for example
6835 * to dedicate backup servers to specific servers only.
6836 * However, to prevent clients from sticking to cookie-less backup server
6837 * when they have incidentely learned an empty cookie, we simply ignore
6838 * empty cookies and mark them as invalid.
6839 * The same behaviour is applied when persistence must be ignored.
6840 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6841 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6842 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6843
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6844 while (srv) {
6845 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6846 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6847 if ((srv->state & SRV_RUNNING) ||
6848 (t->be->options & PR_O_PERSIST) ||
6849 (t->flags & SN_FORCE_PRST)) {
6850 /* we found the server and we can use it */
6851 txn->flags &= ~TX_CK_MASK;
6852 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6853 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6854 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6855 break;
6856 } else {
6857 /* we found a server, but it's down,
6858 * mark it as such and go on in case
6859 * another one is available.
6860 */
6861 txn->flags &= ~TX_CK_MASK;
6862 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6863 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6864 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6865 srv = srv->next;
6866 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6867
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6868 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6869 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6870 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6871 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6872 txn->flags |= TX_CK_UNUSED;
6873 else
6874 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6875 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6876
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6877 /* depending on the cookie mode, we may have to either :
6878 * - delete the complete cookie if we're in insert+indirect mode, so that
6879 * the server never sees it ;
6880 * - remove the server id from the cookie value, and tag the cookie as an
6881 * application cookie so that it does not get accidentely removed later,
6882 * if we're in cookie prefix mode
6883 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6884 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6885 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6886
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6887 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6888 val_end += delta;
6889 next += delta;
6890 hdr_end += delta;
6891 hdr_next += delta;
6892 cur_hdr->len += delta;
6893 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6894
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6895 del_from = NULL;
6896 preserve_hdr = 1; /* we want to keep this cookie */
6897 }
6898 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6899 (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]6900 del_from = prev;
6901 }
6902 } else {
6903 /* This is not our cookie, so we must preserve it. But if we already
6904 * scheduled another cookie for removal, we cannot remove the
6905 * complete header, but we can remove the previous block itself.
6906 */
6907 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6908
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6909 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6910 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6911 if (att_beg >= del_from)
6912 att_beg += delta;
6913 if (att_end >= del_from)
6914 att_end += delta;
6915 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6916 val_end += delta;
6917 next += delta;
6918 hdr_end += delta;
6919 hdr_next += delta;
6920 cur_hdr->len += delta;
6921 http_msg_move_end(&txn->req, delta);
6922 prev = del_from;
6923 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6924 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6925 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6926
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6927 /* Look for the appsession cookie unless persistence must be ignored */
6928 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6929 int cmp_len, value_len;
6930 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6931
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6932 if (t->be->options2 & PR_O2_AS_PFX) {
6933 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6934 value_begin = att_beg + t->be->appsession_name_len;
6935 value_len = val_end - att_beg - t->be->appsession_name_len;
6936 } else {
6937 cmp_len = att_end - att_beg;
6938 value_begin = val_beg;
6939 value_len = val_end - val_beg;
6940 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6941
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6942 /* let's see if the cookie is our appcookie */
6943 if (cmp_len == t->be->appsession_name_len &&
6944 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6945 manage_client_side_appsession(t, value_begin, value_len);
6946 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6947 }
6948
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6949 /* continue with next cookie on this header line */
6950 att_beg = next;
6951 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6952
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6953 /* There are no more cookies on this line.
6954 * We may still have one (or several) marked for deletion at the
6955 * end of the line. We must do this now in two ways :
6956 * - if some cookies must be preserved, we only delete from the
6957 * mark to the end of line ;
6958 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6959 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6960 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6961 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6962 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6963 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6964 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6965 cur_hdr->len += delta;
6966 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6967 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6968
6969 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6970 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6971 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6972 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6973 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6974 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6975 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6976 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6977 }
6978
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6979 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6980 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6981 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6982}
6983
6984
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6985/* Iterate the same filter through all response headers contained in <rtr>.
6986 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6987 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6988int 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]6989{
6990 char term;
6991 char *cur_ptr, *cur_end, *cur_next;
6992 int cur_idx, old_idx, last_hdr;
6993 struct http_txn *txn = &t->txn;
6994 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6995 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6996
6997 last_hdr = 0;
6998
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6999 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7000 old_idx = 0;
7001
7002 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7003 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7004 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7005 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7006 (exp->action == ACT_ALLOW ||
7007 exp->action == ACT_DENY))
7008 return 0;
7009
7010 cur_idx = txn->hdr_idx.v[old_idx].next;
7011 if (!cur_idx)
7012 break;
7013
7014 cur_hdr = &txn->hdr_idx.v[cur_idx];
7015 cur_ptr = cur_next;
7016 cur_end = cur_ptr + cur_hdr->len;
7017 cur_next = cur_end + cur_hdr->cr + 1;
7018
7019 /* Now we have one header between cur_ptr and cur_end,
7020 * and the next header starts at cur_next.
7021 */
7022
7023 /* The annoying part is that pattern matching needs
7024 * that we modify the contents to null-terminate all
7025 * strings before testing them.
7026 */
7027
7028 term = *cur_end;
7029 *cur_end = '\0';
7030
7031 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7032 switch (exp->action) {
7033 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7034 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7035 last_hdr = 1;
7036 break;
7037
7038 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7039 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7040 last_hdr = 1;
7041 break;
7042
7043 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7044 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7045 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7046 /* FIXME: if the user adds a newline in the replacement, the
7047 * index will not be recalculated for now, and the new line
7048 * will not be counted as a new header.
7049 */
7050
7051 cur_end += delta;
7052 cur_next += delta;
7053 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7054 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7055 break;
7056
7057 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7058 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7059 cur_next += delta;
7060
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7061 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7062 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7063 txn->hdr_idx.used--;
7064 cur_hdr->len = 0;
7065 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7066 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7067 break;
7068
7069 }
7070 }
7071 if (cur_end)
7072 *cur_end = term; /* restore the string terminator */
7073
7074 /* keep the link from this header to next one in case of later
7075 * removal of next header.
7076 */
7077 old_idx = cur_idx;
7078 }
7079 return 0;
7080}
7081
7082
7083/* Apply the filter to the status line in the response buffer <rtr>.
7084 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7085 * or -1 if a replacement resulted in an invalid status line.
7086 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7087int 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]7088{
7089 char term;
7090 char *cur_ptr, *cur_end;
7091 int done;
7092 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7093 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7094
7095
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7096 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7097 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7098 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7099 (exp->action == ACT_ALLOW ||
7100 exp->action == ACT_DENY))
7101 return 0;
7102 else if (exp->action == ACT_REMOVE)
7103 return 0;
7104
7105 done = 0;
7106
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7107 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7108 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7109
7110 /* Now we have the status line between cur_ptr and cur_end */
7111
7112 /* The annoying part is that pattern matching needs
7113 * that we modify the contents to null-terminate all
7114 * strings before testing them.
7115 */
7116
7117 term = *cur_end;
7118 *cur_end = '\0';
7119
7120 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7121 switch (exp->action) {
7122 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7123 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7124 done = 1;
7125 break;
7126
7127 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7128 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7129 done = 1;
7130 break;
7131
7132 case ACT_REPLACE:
7133 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7134 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7135 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7136 /* FIXME: if the user adds a newline in the replacement, the
7137 * index will not be recalculated for now, and the new line
7138 * will not be counted as a new header.
7139 */
7140
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7141 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7142 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7143 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7144 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7145 cur_ptr, cur_end + 1,
7146 NULL, NULL);
7147 if (unlikely(!cur_end))
7148 return -1;
7149
7150 /* we have a full respnse and we know that we have either a CR
7151 * or an LF at <ptr>.
7152 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7153 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]7154 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]7155 /* there is no point trying this regex on headers */
7156 return 1;
7157 }
7158 }
7159 *cur_end = term; /* restore the string terminator */
7160 return done;
7161}
7162
7163
7164
7165/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7166 * 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]7167 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7168 * unparsable response.
7169 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7170int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7171{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7172 struct http_txn *txn = &s->txn;
7173 struct hdr_exp *exp;
7174
7175 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7176 int ret;
7177
7178 /*
7179 * The interleaving of transformations and verdicts
7180 * makes it difficult to decide to continue or stop
7181 * the evaluation.
7182 */
7183
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7184 if (txn->flags & TX_SVDENY)
7185 break;
7186
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7187 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7188 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7189 exp->action == ACT_PASS)) {
7190 exp = exp->next;
7191 continue;
7192 }
7193
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7194 /* if this filter had a condition, evaluate it now and skip to
7195 * next filter if the condition does not match.
7196 */
7197 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7198 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]7199 ret = acl_pass(ret);
7200 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7201 ret = !ret;
7202 if (!ret)
7203 continue;
7204 }
7205
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7206 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7207 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7208 if (unlikely(ret < 0))
7209 return -1;
7210
7211 if (likely(ret == 0)) {
7212 /* The filter did not match the response, it can be
7213 * iterated through all headers.
7214 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7215 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7216 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7217 }
7218 return 0;
7219}
7220
7221
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7222/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7223 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7224 * desirable to call it only when needed. This function is also used when we
7225 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7226 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7227void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7228{
7229 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7230 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7231 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7232 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7233 char *hdr_beg, *hdr_end, *hdr_next;
7234 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7235
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7236 /* Iterate through the headers.
7237 * we start with the start line.
7238 */
7239 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7240 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7241
7242 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7243 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7244 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7245
7246 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7247 hdr_beg = hdr_next;
7248 hdr_end = hdr_beg + cur_hdr->len;
7249 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7250
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7251 /* We have one full header between hdr_beg and hdr_end, and the
7252 * next header starts at hdr_next. We're only interested in
7253 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7254 */
7255
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7256 is_cookie2 = 0;
7257 prev = hdr_beg + 10;
7258 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7259 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7260 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7261 if (!val) {
7262 old_idx = cur_idx;
7263 continue;
7264 }
7265 is_cookie2 = 1;
7266 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7267 }
7268
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7269 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7270 * <prev> points to the colon.
7271 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7272 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7273
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7274 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7275 * check-cache is enabled) and we are not interested in checking
7276 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7277 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7278 if (t->be->cookie_name == NULL &&
7279 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7280 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7281 return;
7282
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7283 /* OK so now we know we have to process this response cookie.
7284 * The format of the Set-Cookie header is slightly different
7285 * from the format of the Cookie header in that it does not
7286 * support the comma as a cookie delimiter (thus the header
7287 * cannot be folded) because the Expires attribute described in
7288 * the original Netscape's spec may contain an unquoted date
7289 * with a comma inside. We have to live with this because
7290 * many browsers don't support Max-Age and some browsers don't
7291 * support quoted strings. However the Set-Cookie2 header is
7292 * clean.
7293 *
7294 * We have to keep multiple pointers in order to support cookie
7295 * removal at the beginning, middle or end of header without
7296 * corrupting the header (in case of set-cookie2). A special
7297 * pointer, <scav> points to the beginning of the set-cookie-av
7298 * fields after the first semi-colon. The <next> pointer points
7299 * either to the end of line (set-cookie) or next unquoted comma
7300 * (set-cookie2). All of these headers are valid :
7301 *
7302 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7303 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7304 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7305 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7306 * | | | | | | | | | |
7307 * | | | | | | | | +-> next hdr_end <--+
7308 * | | | | | | | +------------> scav
7309 * | | | | | | +--------------> val_end
7310 * | | | | | +--------------------> val_beg
7311 * | | | | +----------------------> equal
7312 * | | | +------------------------> att_end
7313 * | | +----------------------------> att_beg
7314 * | +------------------------------> prev
7315 * +-----------------------------------------> hdr_beg
7316 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7317
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7318 for (; prev < hdr_end; prev = next) {
7319 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7320
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7321 /* find att_beg */
7322 att_beg = prev + 1;
7323 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7324 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7325
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7326 /* find att_end : this is the first character after the last non
7327 * space before the equal. It may be equal to hdr_end.
7328 */
7329 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7330
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7331 while (equal < hdr_end) {
7332 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7333 break;
7334 if (http_is_spht[(unsigned char)*equal++])
7335 continue;
7336 att_end = equal;
7337 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7338
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7339 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7340 * is between <att_beg> and <equal>, both may be identical.
7341 */
7342
7343 /* look for end of cookie if there is an equal sign */
7344 if (equal < hdr_end && *equal == '=') {
7345 /* look for the beginning of the value */
7346 val_beg = equal + 1;
7347 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7348 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7349
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7350 /* find the end of the value, respecting quotes */
7351 next = find_cookie_value_end(val_beg, hdr_end);
7352
7353 /* make val_end point to the first white space or delimitor after the value */
7354 val_end = next;
7355 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7356 val_end--;
7357 } else {
7358 /* <equal> points to next comma, semi-colon or EOL */
7359 val_beg = val_end = next = equal;
7360 }
7361
7362 if (next < hdr_end) {
7363 /* Set-Cookie2 supports multiple cookies, and <next> points to
7364 * a colon or semi-colon before the end. So skip all attr-value
7365 * pairs and look for the next comma. For Set-Cookie, since
7366 * commas are permitted in values, skip to the end.
7367 */
7368 if (is_cookie2)
7369 next = find_hdr_value_end(next, hdr_end);
7370 else
7371 next = hdr_end;
7372 }
7373
7374 /* Now everything is as on the diagram above */
7375
7376 /* Ignore cookies with no equal sign */
7377 if (equal == val_end)
7378 continue;
7379
7380 /* If there are spaces around the equal sign, we need to
7381 * strip them otherwise we'll get trouble for cookie captures,
7382 * or even for rewrites. Since this happens extremely rarely,
7383 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7384 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7385 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7386 int stripped_before = 0;
7387 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7388
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7389 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7390 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7391 equal += stripped_before;
7392 val_beg += stripped_before;
7393 }
7394
7395 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7396 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7397 val_beg += stripped_after;
7398 stripped_before += stripped_after;
7399 }
7400
7401 val_end += stripped_before;
7402 next += stripped_before;
7403 hdr_end += stripped_before;
7404 hdr_next += stripped_before;
7405 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7406 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7407 }
7408
7409 /* First, let's see if we want to capture this cookie. We check
7410 * that we don't already have a server side cookie, because we
7411 * can only capture one. Also as an optimisation, we ignore
7412 * cookies shorter than the declared name.
7413 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7414 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7415 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7416 (val_end - att_beg >= t->fe->capture_namelen) &&
7417 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7418 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7419 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7420 Alert("HTTP logging : out of memory.\n");
7421 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7422 else {
7423 if (log_len > t->fe->capture_len)
7424 log_len = t->fe->capture_len;
7425 memcpy(txn->srv_cookie, att_beg, log_len);
7426 txn->srv_cookie[log_len] = 0;
7427 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7428 }
7429
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7430 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7431 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7432 if (!(t->flags & SN_IGNORE_PRST) &&
7433 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7434 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7435 /* assume passive cookie by default */
7436 txn->flags &= ~TX_SCK_MASK;
7437 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7438
7439 /* If the cookie is in insert mode on a known server, we'll delete
7440 * this occurrence because we'll insert another one later.
7441 * 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]7442 * a direct access.
7443 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7444 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7445 /* The "preserve" flag was set, we don't want to touch the
7446 * server's cookie.
7447 */
7448 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7449 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7450 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7451 /* this cookie must be deleted */
7452 if (*prev == ':' && next == hdr_end) {
7453 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7454 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7455 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7456 txn->hdr_idx.used--;
7457 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7458 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7459 hdr_next += delta;
7460 http_msg_move_end(&txn->rsp, delta);
7461 /* note: while both invalid now, <next> and <hdr_end>
7462 * are still equal, so the for() will stop as expected.
7463 */
7464 } else {
7465 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7466 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7467 next = prev;
7468 hdr_end += delta;
7469 hdr_next += delta;
7470 cur_hdr->len += delta;
7471 http_msg_move_end(&txn->rsp, delta);
7472 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7473 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7474 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7475 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7476 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7477 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7478 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7479 * with this server since we know it.
7480 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7481 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7482 next += delta;
7483 hdr_end += delta;
7484 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7485 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7486 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7487
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7488 txn->flags &= ~TX_SCK_MASK;
7489 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7490 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7491 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7492 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7493 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7494 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7495 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7496 next += delta;
7497 hdr_end += delta;
7498 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7499 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7500 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7501
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7502 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7503 txn->flags &= ~TX_SCK_MASK;
7504 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7505 }
7506 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7507 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7508 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7509 int cmp_len, value_len;
7510 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7511
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7512 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7513 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7514 value_begin = att_beg + t->be->appsession_name_len;
7515 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]7516 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7517 cmp_len = att_end - att_beg;
7518 value_begin = val_beg;
7519 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7520 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7521
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7522 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7523 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7524 /* free a possibly previously allocated memory */
7525 pool_free2(apools.sessid, txn->sessid);
7526
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7527 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7528 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7529 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7530 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7531 return;
7532 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7533 memcpy(txn->sessid, value_begin, value_len);
7534 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7535 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7536 }
7537 /* that's done for this cookie, check the next one on the same
7538 * line when next != hdr_end (only if is_cookie2).
7539 */
7540 }
7541 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7542 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7543 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7544
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7545 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7546 appsess *asession = NULL;
7547 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7548 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7549 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7550 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7551 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7552 Alert("Not enough Memory process_srv():asession:calloc().\n");
7553 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7554 return;
7555 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7556 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7557
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7558 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7559 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7560 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]7561 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7562 return;
7563 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7564 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7565 asession->sessid[t->be->appsession_len] = 0;
7566
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7567 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7568 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7569 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7570 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]7571 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7572 return;
7573 }
7574 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7575 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7576
7577 asession->request_count = 0;
7578 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7579 }
7580
7581 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7582 asession->request_count++;
7583 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7584}
7585
7586
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7587/*
7588 * Check if response is cacheable or not. Updates t->flags.
7589 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7590void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7591{
7592 struct http_txn *txn = &t->txn;
7593 char *p1, *p2;
7594
7595 char *cur_ptr, *cur_end, *cur_next;
7596 int cur_idx;
7597
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7598 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7599 return;
7600
7601 /* Iterate through the headers.
7602 * we start with the start line.
7603 */
7604 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7605 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7606
7607 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7608 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7609 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7610
7611 cur_hdr = &txn->hdr_idx.v[cur_idx];
7612 cur_ptr = cur_next;
7613 cur_end = cur_ptr + cur_hdr->len;
7614 cur_next = cur_end + cur_hdr->cr + 1;
7615
7616 /* We have one full header between cur_ptr and cur_end, and the
7617 * next header starts at cur_next. We're only interested in
7618 * "Cookie:" headers.
7619 */
7620
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7621 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7622 if (val) {
7623 if ((cur_end - (cur_ptr + val) >= 8) &&
7624 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7625 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7626 return;
7627 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7628 }
7629
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7630 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7631 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7632 continue;
7633
7634 /* OK, right now we know we have a cache-control header at cur_ptr */
7635
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7636 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7637
7638 if (p1 >= cur_end) /* no more info */
7639 continue;
7640
7641 /* p1 is at the beginning of the value */
7642 p2 = p1;
7643
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7644 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7645 p2++;
7646
7647 /* we have a complete value between p1 and p2 */
7648 if (p2 < cur_end && *p2 == '=') {
7649 /* we have something of the form no-cache="set-cookie" */
7650 if ((cur_end - p1 >= 21) &&
7651 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7652 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7653 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7654 continue;
7655 }
7656
7657 /* OK, so we know that either p2 points to the end of string or to a comma */
7658 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]7659 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7660 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7661 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7662 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7663 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7664 return;
7665 }
7666
7667 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7668 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7669 continue;
7670 }
7671 }
7672}
7673
7674
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7675/*
7676 * Try to retrieve a known appsession in the URI, then the associated server.
7677 * If the server is found, it's assigned to the session.
7678 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7679void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7680{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7681 char *end_params, *first_param, *cur_param, *next_param;
7682 char separator;
7683 int value_len;
7684
7685 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7686
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7687 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7688 (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]7689 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7690 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7691
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7692 first_param = NULL;
7693 switch (mode) {
7694 case PR_O2_AS_M_PP:
7695 first_param = memchr(begin, ';', len);
7696 break;
7697 case PR_O2_AS_M_QS:
7698 first_param = memchr(begin, '?', len);
7699 break;
7700 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7701
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7702 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7703 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7704 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7705
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7706 switch (mode) {
7707 case PR_O2_AS_M_PP:
7708 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7709 end_params = (char *) begin + len;
7710 }
7711 separator = ';';
7712 break;
7713 case PR_O2_AS_M_QS:
7714 end_params = (char *) begin + len;
7715 separator = '&';
7716 break;
7717 default:
7718 /* unknown mode, shouldn't happen */
7719 return;
7720 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7721
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7722 cur_param = next_param = end_params;
7723 while (cur_param > first_param) {
7724 cur_param--;
7725 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7726 /* let's see if this is the appsession parameter */
7727 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7728 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7729 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7730 /* Cool... it's the right one */
7731 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7732 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7733 if (value_len > 0) {
7734 manage_client_side_appsession(t, cur_param, value_len);
7735 }
7736 break;
7737 }
7738 next_param = cur_param;
7739 }
7740 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7741#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7742 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7743 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7744#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7745}
7746
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7747/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7748 * 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]7749 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7750 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7751 * 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]7752 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7753 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7754 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7755 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7756int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7757{
7758 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7759 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7760 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7761
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7762 if (!uri_auth)
7763 return 0;
7764
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7765 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]7766 return 0;
7767
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7768 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7769 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7770 return 0;
7771
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]7772 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7773 return 0;
7774
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7775 return 1;
7776}
7777
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7778/*
7779 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7780 * By default it tries to report the error position as msg->err_pos. However if
7781 * this one is not set, it will then report msg->next, which is the last known
7782 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7783 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7784 */
7785void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7786 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7787 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7788{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7789 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7790 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7791
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7792 es->len = MIN(chn->buf->i, sizeof(es->buf));
7793 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7794 len1 = MIN(len1, es->len);
7795 len2 = es->len - len1; /* remaining data if buffer wraps */
7796
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7797 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7798 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7799 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7800
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7801 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7802 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7803 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7804 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7805
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7806 es->when = date; // user-visible date
7807 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7808 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7809 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7810 if (objt_conn(s->req->prod->end))
7811 es->src = __objt_conn(s->req->prod->end)->addr.from;
7812 else
7813 memset(&es->src, 0, sizeof(es->src));
7814
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7815 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7816 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7817 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7818 es->s_flags = s->flags;
7819 es->t_flags = s->txn.flags;
7820 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7821 es->b_out = chn->buf->o;
7822 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7823 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7824 es->m_clen = msg->chunk_len;
7825 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7826}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7827
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7828/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7829 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7830 * performed over the whole headers. Otherwise it must contain a valid header
7831 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7832 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7833 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7834 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7835 * -1. The value fetch stops at commas, so this function is suited for use with
7836 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7837 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7838 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7839unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7840 struct hdr_idx *idx, int occ,
7841 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7842{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7843 struct hdr_ctx local_ctx;
7844 char *ptr_hist[MAX_HDR_HISTORY];
7845 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7846 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7847 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7848
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7849 if (!ctx) {
7850 local_ctx.idx = 0;
7851 ctx = &local_ctx;
7852 }
7853
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7854 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7855 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7856 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7857 occ--;
7858 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7859 *vptr = ctx->line + ctx->val;
7860 *vlen = ctx->vlen;
7861 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7862 }
7863 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7864 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7865 }
7866
7867 /* negative occurrence, we scan all the list then walk back */
7868 if (-occ > MAX_HDR_HISTORY)
7869 return 0;
7870
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7871 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7872 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7873 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7874 len_hist[hist_ptr] = ctx->vlen;
7875 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7876 hist_ptr = 0;
7877 found++;
7878 }
7879 if (-occ > found)
7880 return 0;
7881 /* 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]7882 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
7883 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
7884 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7885 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]7886 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7887 if (hist_ptr >= MAX_HDR_HISTORY)
7888 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7889 *vptr = ptr_hist[hist_ptr];
7890 *vlen = len_hist[hist_ptr];
7891 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7892}
7893
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7894/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7895 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7896 * performed over the whole headers. Otherwise it must contain a valid header
7897 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7898 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7899 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7900 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7901 * -1. This function differs from http_get_hdr() in that it only returns full
7902 * line header values and does not stop at commas.
7903 * The return value is 0 if nothing was found, or non-zero otherwise.
7904 */
7905unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
7906 struct hdr_idx *idx, int occ,
7907 struct hdr_ctx *ctx, char **vptr, int *vlen)
7908{
7909 struct hdr_ctx local_ctx;
7910 char *ptr_hist[MAX_HDR_HISTORY];
7911 int len_hist[MAX_HDR_HISTORY];
7912 unsigned int hist_ptr;
7913 int found;
7914
7915 if (!ctx) {
7916 local_ctx.idx = 0;
7917 ctx = &local_ctx;
7918 }
7919
7920 if (occ >= 0) {
7921 /* search from the beginning */
7922 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
7923 occ--;
7924 if (occ <= 0) {
7925 *vptr = ctx->line + ctx->val;
7926 *vlen = ctx->vlen;
7927 return 1;
7928 }
7929 }
7930 return 0;
7931 }
7932
7933 /* negative occurrence, we scan all the list then walk back */
7934 if (-occ > MAX_HDR_HISTORY)
7935 return 0;
7936
7937 found = hist_ptr = 0;
7938 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
7939 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7940 len_hist[hist_ptr] = ctx->vlen;
7941 if (++hist_ptr >= MAX_HDR_HISTORY)
7942 hist_ptr = 0;
7943 found++;
7944 }
7945 if (-occ > found)
7946 return 0;
7947 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7948 * find occurrence -occ, so we have to check [hist_ptr+occ].
7949 */
7950 hist_ptr += occ;
7951 if (hist_ptr >= MAX_HDR_HISTORY)
7952 hist_ptr -= MAX_HDR_HISTORY;
7953 *vptr = ptr_hist[hist_ptr];
7954 *vlen = len_hist[hist_ptr];
7955 return 1;
7956}
7957
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7958/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7959 * Print a debug line with a header. Always stop at the first CR or LF char,
7960 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7961 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7962 */
7963void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7964{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7965 int max;
7966 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7967 dir,
7968 objt_conn(t->req->prod->end) ? (unsigned short)objt_conn(t->req->prod->end)->t.sock.fd : -1,
7969 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]7970
7971 for (max = 0; start + max < end; max++)
7972 if (start[max] == '\r' || start[max] == '\n')
7973 break;
7974
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7975 UBOUND(max, trash.size - trash.len - 3);
7976 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7977 trash.str[trash.len++] = '\n';
7978 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7979}
7980
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7981/*
7982 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7983 * the required fields are properly allocated and that we only need to (re)init
7984 * them. This should be used before processing any new request.
7985 */
7986void http_init_txn(struct session *s)
7987{
7988 struct http_txn *txn = &s->txn;
7989 struct proxy *fe = s->fe;
7990
7991 txn->flags = 0;
7992 txn->status = -1;
7993
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7994 txn->cookie_first_date = 0;
7995 txn->cookie_last_date = 0;
7996
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7997 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7998 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7999 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8000 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8001 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8002 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8003 txn->req.chunk_len = 0LL;
8004 txn->req.body_len = 0LL;
8005 txn->rsp.chunk_len = 0LL;
8006 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8007 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8008 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8009 txn->req.chn = s->req;
8010 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8011
8012 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8013
8014 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8015 if (fe->options2 & PR_O2_REQBUG_OK)
8016 txn->req.err_pos = -1; /* let buggy requests pass */
8017
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8018 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8019 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8020
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8021 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8022 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8023
8024 if (txn->hdr_idx.v)
8025 hdr_idx_init(&txn->hdr_idx);
8026}
8027
8028/* to be used at the end of a transaction */
8029void http_end_txn(struct session *s)
8030{
8031 struct http_txn *txn = &s->txn;
8032
8033 /* these ones will have been dynamically allocated */
8034 pool_free2(pool2_requri, txn->uri);
8035 pool_free2(pool2_capture, txn->cli_cookie);
8036 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8037 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8038 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8039
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8040 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8041 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8042 txn->uri = NULL;
8043 txn->srv_cookie = NULL;
8044 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8045
8046 if (txn->req.cap) {
8047 struct cap_hdr *h;
8048 for (h = s->fe->req_cap; h; h = h->next)
8049 pool_free2(h->pool, txn->req.cap[h->index]);
8050 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8051 }
8052
8053 if (txn->rsp.cap) {
8054 struct cap_hdr *h;
8055 for (h = s->fe->rsp_cap; h; h = h->next)
8056 pool_free2(h->pool, txn->rsp.cap[h->index]);
8057 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8058 }
8059
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8060}
8061
8062/* to be used at the end of a transaction to prepare a new one */
8063void http_reset_txn(struct session *s)
8064{
8065 http_end_txn(s);
8066 http_init_txn(s);
8067
8068 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8069 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8070 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8071 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8072 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8073 /* re-init store persistence */
8074 s->store_count = 0;
8075
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8076 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8077
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8078 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8079
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8080 /* We must trim any excess data from the response buffer, because we
8081 * may have blocked an invalid response from a server that we don't
8082 * want to accidentely forward once we disable the analysers, nor do
8083 * we want those data to come along with next response. A typical
8084 * example of such data would be from a buggy server responding to
8085 * a HEAD with some data, or sending more than the advertised
8086 * content-length.
8087 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8088 if (unlikely(s->rep->buf->i))
8089 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8090
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8091 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8092 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8093
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8094 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8095 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8096
8097 s->req->rex = TICK_ETERNITY;
8098 s->req->wex = TICK_ETERNITY;
8099 s->req->analyse_exp = TICK_ETERNITY;
8100 s->rep->rex = TICK_ETERNITY;
8101 s->rep->wex = TICK_ETERNITY;
8102 s->rep->analyse_exp = TICK_ETERNITY;
8103}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8104
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8105void free_http_req_rules(struct list *r) {
8106 struct http_req_rule *tr, *pr;
8107
8108 list_for_each_entry_safe(pr, tr, r, list) {
8109 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8110 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8111 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8112
8113 free(pr);
8114 }
8115}
8116
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8117/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8118struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8119{
8120 struct http_req_rule *rule;
8121 int cur_arg;
8122
8123 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8124 if (!rule) {
8125 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8126 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8127 }
8128
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8129 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8130 rule->action = HTTP_REQ_ACT_ALLOW;
8131 cur_arg = 1;
8132 } else if (!strcmp(args[0], "deny")) {
8133 rule->action = HTTP_REQ_ACT_DENY;
8134 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8135 } else if (!strcmp(args[0], "tarpit")) {
8136 rule->action = HTTP_REQ_ACT_TARPIT;
8137 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8138 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8139 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8140 cur_arg = 1;
8141
8142 while(*args[cur_arg]) {
8143 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8144 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8145 cur_arg+=2;
8146 continue;
8147 } else
8148 break;
8149 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8150 } else if (!strcmp(args[0], "set-nice")) {
8151 rule->action = HTTP_REQ_ACT_SET_NICE;
8152 cur_arg = 1;
8153
8154 if (!*args[cur_arg] ||
8155 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8156 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8157 file, linenum, args[0]);
8158 goto out_err;
8159 }
8160 rule->arg.nice = atoi(args[cur_arg]);
8161 if (rule->arg.nice < -1024)
8162 rule->arg.nice = -1024;
8163 else if (rule->arg.nice > 1024)
8164 rule->arg.nice = 1024;
8165 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8166 } else if (!strcmp(args[0], "set-tos")) {
8167#ifdef IP_TOS
8168 char *err;
8169 rule->action = HTTP_REQ_ACT_SET_TOS;
8170 cur_arg = 1;
8171
8172 if (!*args[cur_arg] ||
8173 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8174 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8175 file, linenum, args[0]);
8176 goto out_err;
8177 }
8178
8179 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8180 if (err && *err != '\0') {
8181 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8182 file, linenum, err, args[0]);
8183 goto out_err;
8184 }
8185 cur_arg++;
8186#else
8187 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8188 goto out_err;
8189#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8190 } else if (!strcmp(args[0], "set-mark")) {
8191#ifdef SO_MARK
8192 char *err;
8193 rule->action = HTTP_REQ_ACT_SET_MARK;
8194 cur_arg = 1;
8195
8196 if (!*args[cur_arg] ||
8197 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8198 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8199 file, linenum, args[0]);
8200 goto out_err;
8201 }
8202
8203 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8204 if (err && *err != '\0') {
8205 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8206 file, linenum, err, args[0]);
8207 goto out_err;
8208 }
8209 cur_arg++;
8210 global.last_checks |= LSTCHK_NETADM;
8211#else
8212 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8213 goto out_err;
8214#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8215 } else if (!strcmp(args[0], "set-log-level")) {
8216 rule->action = HTTP_REQ_ACT_SET_LOGL;
8217 cur_arg = 1;
8218
8219 if (!*args[cur_arg] ||
8220 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8221 bad_log_level:
8222 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8223 file, linenum, args[0]);
8224 goto out_err;
8225 }
8226 if (strcmp(args[cur_arg], "silent") == 0)
8227 rule->arg.loglevel = -1;
8228 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8229 goto bad_log_level;
8230 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8231 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8232 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8233 cur_arg = 1;
8234
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8235 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8236 (*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]8237 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8238 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8239 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8240 }
8241
8242 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8243 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8244 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8245
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8246 proxy->conf.args.ctx = ARGC_HRQ;
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame]8247 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8248 (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]8249 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8250 } else if (strcmp(args[0], "redirect") == 0) {
8251 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8252 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8253
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8254 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]8255 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8256 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8257 goto out_err;
8258 }
8259
8260 /* this redirect rule might already contain a parsed condition which
8261 * we'll pass to the http-request rule.
8262 */
8263 rule->action = HTTP_REQ_ACT_REDIR;
8264 rule->arg.redir = redir;
8265 rule->cond = redir->cond;
8266 redir->cond = NULL;
8267 cur_arg = 2;
8268 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8269 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8270 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]8271 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8272 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8273 }
8274
8275 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8276 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8277 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8278
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8279 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8280 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8281 file, linenum, args[0], errmsg);
8282 free(errmsg);
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 rule->cond = cond;
8286 }
8287 else if (*args[cur_arg]) {
8288 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8289 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8290 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8291 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8292 }
8293
8294 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8295 out_err:
8296 free(rule);
8297 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8298}
8299
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8300/* parse an "http-respose" rule */
8301struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8302{
8303 struct http_res_rule *rule;
8304 int cur_arg;
8305
8306 rule = calloc(1, sizeof(*rule));
8307 if (!rule) {
8308 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8309 goto out_err;
8310 }
8311
8312 if (!strcmp(args[0], "allow")) {
8313 rule->action = HTTP_RES_ACT_ALLOW;
8314 cur_arg = 1;
8315 } else if (!strcmp(args[0], "deny")) {
8316 rule->action = HTTP_RES_ACT_DENY;
8317 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8318 } else if (!strcmp(args[0], "set-nice")) {
8319 rule->action = HTTP_RES_ACT_SET_NICE;
8320 cur_arg = 1;
8321
8322 if (!*args[cur_arg] ||
8323 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8324 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8325 file, linenum, args[0]);
8326 goto out_err;
8327 }
8328 rule->arg.nice = atoi(args[cur_arg]);
8329 if (rule->arg.nice < -1024)
8330 rule->arg.nice = -1024;
8331 else if (rule->arg.nice > 1024)
8332 rule->arg.nice = 1024;
8333 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8334 } else if (!strcmp(args[0], "set-tos")) {
8335#ifdef IP_TOS
8336 char *err;
8337 rule->action = HTTP_RES_ACT_SET_TOS;
8338 cur_arg = 1;
8339
8340 if (!*args[cur_arg] ||
8341 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8342 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8343 file, linenum, args[0]);
8344 goto out_err;
8345 }
8346
8347 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8348 if (err && *err != '\0') {
8349 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8350 file, linenum, err, args[0]);
8351 goto out_err;
8352 }
8353 cur_arg++;
8354#else
8355 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8356 goto out_err;
8357#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8358 } else if (!strcmp(args[0], "set-mark")) {
8359#ifdef SO_MARK
8360 char *err;
8361 rule->action = HTTP_RES_ACT_SET_MARK;
8362 cur_arg = 1;
8363
8364 if (!*args[cur_arg] ||
8365 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8366 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8367 file, linenum, args[0]);
8368 goto out_err;
8369 }
8370
8371 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8372 if (err && *err != '\0') {
8373 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8374 file, linenum, err, args[0]);
8375 goto out_err;
8376 }
8377 cur_arg++;
8378 global.last_checks |= LSTCHK_NETADM;
8379#else
8380 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8381 goto out_err;
8382#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8383 } else if (!strcmp(args[0], "set-log-level")) {
8384 rule->action = HTTP_RES_ACT_SET_LOGL;
8385 cur_arg = 1;
8386
8387 if (!*args[cur_arg] ||
8388 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8389 bad_log_level:
8390 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8391 file, linenum, args[0]);
8392 goto out_err;
8393 }
8394 if (strcmp(args[cur_arg], "silent") == 0)
8395 rule->arg.loglevel = -1;
8396 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8397 goto bad_log_level;
8398 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8399 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8400 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8401 cur_arg = 1;
8402
8403 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8404 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8405 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8406 file, linenum, args[0]);
8407 goto out_err;
8408 }
8409
8410 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8411 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8412 LIST_INIT(&rule->arg.hdr_add.fmt);
8413
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8414 proxy->conf.args.ctx = ARGC_HRS;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8415 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8416 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR);
8417 cur_arg += 2;
8418 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8419 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]8420 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8421 goto out_err;
8422 }
8423
8424 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8425 struct acl_cond *cond;
8426 char *errmsg = NULL;
8427
8428 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8429 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8430 file, linenum, args[0], errmsg);
8431 free(errmsg);
8432 goto out_err;
8433 }
8434 rule->cond = cond;
8435 }
8436 else if (*args[cur_arg]) {
8437 Alert("parsing [%s:%d]: 'http-response %s' expects"
8438 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8439 file, linenum, args[0], args[cur_arg]);
8440 goto out_err;
8441 }
8442
8443 return rule;
8444 out_err:
8445 free(rule);
8446 return NULL;
8447}
8448
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8449/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8450 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8451 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8452 */
8453struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8454 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8455{
8456 struct redirect_rule *rule;
8457 int cur_arg;
8458 int type = REDIRECT_TYPE_NONE;
8459 int code = 302;
8460 const char *destination = NULL;
8461 const char *cookie = NULL;
8462 int cookie_set = 0;
8463 unsigned int flags = REDIRECT_FLAG_NONE;
8464 struct acl_cond *cond = NULL;
8465
8466 cur_arg = 0;
8467 while (*(args[cur_arg])) {
8468 if (strcmp(args[cur_arg], "location") == 0) {
8469 if (!*args[cur_arg + 1])
8470 goto missing_arg;
8471
8472 type = REDIRECT_TYPE_LOCATION;
8473 cur_arg++;
8474 destination = args[cur_arg];
8475 }
8476 else if (strcmp(args[cur_arg], "prefix") == 0) {
8477 if (!*args[cur_arg + 1])
8478 goto missing_arg;
8479
8480 type = REDIRECT_TYPE_PREFIX;
8481 cur_arg++;
8482 destination = args[cur_arg];
8483 }
8484 else if (strcmp(args[cur_arg], "scheme") == 0) {
8485 if (!*args[cur_arg + 1])
8486 goto missing_arg;
8487
8488 type = REDIRECT_TYPE_SCHEME;
8489 cur_arg++;
8490 destination = args[cur_arg];
8491 }
8492 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8493 if (!*args[cur_arg + 1])
8494 goto missing_arg;
8495
8496 cur_arg++;
8497 cookie = args[cur_arg];
8498 cookie_set = 1;
8499 }
8500 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8501 if (!*args[cur_arg + 1])
8502 goto missing_arg;
8503
8504 cur_arg++;
8505 cookie = args[cur_arg];
8506 cookie_set = 0;
8507 }
8508 else if (strcmp(args[cur_arg], "code") == 0) {
8509 if (!*args[cur_arg + 1])
8510 goto missing_arg;
8511
8512 cur_arg++;
8513 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8514 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8515 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8516 "'%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]8517 args[cur_arg - 1], args[cur_arg]);
8518 return NULL;
8519 }
8520 }
8521 else if (!strcmp(args[cur_arg],"drop-query")) {
8522 flags |= REDIRECT_FLAG_DROP_QS;
8523 }
8524 else if (!strcmp(args[cur_arg],"append-slash")) {
8525 flags |= REDIRECT_FLAG_APPEND_SLASH;
8526 }
8527 else if (strcmp(args[cur_arg], "if") == 0 ||
8528 strcmp(args[cur_arg], "unless") == 0) {
8529 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8530 if (!cond) {
8531 memprintf(errmsg, "error in condition: %s", *errmsg);
8532 return NULL;
8533 }
8534 break;
8535 }
8536 else {
8537 memprintf(errmsg,
8538 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8539 args[cur_arg]);
8540 return NULL;
8541 }
8542 cur_arg++;
8543 }
8544
8545 if (type == REDIRECT_TYPE_NONE) {
8546 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8547 return NULL;
8548 }
8549
8550 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8551 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8552 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8553
8554 if (!use_fmt) {
8555 /* old-style static redirect rule */
8556 rule->rdr_str = strdup(destination);
8557 rule->rdr_len = strlen(destination);
8558 }
8559 else {
8560 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8561
8562 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8563 * if prefix == "/", we don't want to add anything, otherwise it
8564 * makes it hard for the user to configure a self-redirection.
8565 */
8566 proxy->conf.args.ctx = ARGC_RDR;
8567 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
8568 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, 0,
8569 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
8570 }
8571 }
8572
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8573 if (cookie) {
8574 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8575 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8576 */
8577 rule->cookie_len = strlen(cookie);
8578 if (cookie_set) {
8579 rule->cookie_str = malloc(rule->cookie_len + 10);
8580 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8581 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8582 rule->cookie_len += 9;
8583 } else {
8584 rule->cookie_str = malloc(rule->cookie_len + 21);
8585 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8586 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8587 rule->cookie_len += 20;
8588 }
8589 }
8590 rule->type = type;
8591 rule->code = code;
8592 rule->flags = flags;
8593 LIST_INIT(&rule->list);
8594 return rule;
8595
8596 missing_arg:
8597 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8598 return NULL;
8599}
8600
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8601/************************************************************************/
8602/* The code below is dedicated to ACL parsing and matching */
8603/************************************************************************/
8604
8605
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8606/* This function ensures that the prerequisites for an L7 fetch are ready,
8607 * which means that a request or response is ready. If some data is missing,
8608 * 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]8609 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8610 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8611 *
8612 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8613 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
8614 * decide whether or not an HTTP message is present ;
8615 * 0 if the requested data cannot be fetched or if it is certain that
8616 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8617 * 1 if an HTTP message is ready
8618 */
8619static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8620smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8621 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8622{
8623 struct http_txn *txn = l7;
8624 struct http_msg *msg = &txn->req;
8625
8626 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8627 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8628 */
8629
8630 if (unlikely(!s || !txn))
8631 return 0;
8632
8633 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8634 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8635
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8636 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8637 if (unlikely(!s->req))
8638 return 0;
8639
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8640 /* If the buffer does not leave enough free space at the end,
8641 * we must first realign it.
8642 */
8643 if (s->req->buf->p > s->req->buf->data &&
8644 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8645 buffer_slow_realign(s->req->buf);
8646
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8647 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]8648 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8649 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8650
8651 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8652 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8653 http_msg_analyzer(msg, &txn->hdr_idx);
8654
8655 /* Still no valid request ? */
8656 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8657 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8658 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8659 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8660 }
8661 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8662 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8663 return 0;
8664 }
8665
8666 /* OK we just got a valid HTTP request. We have some minor
8667 * preparation to perform so that further checks can rely
8668 * on HTTP tests.
8669 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8670
8671 /* If the request was parsed but was too large, we must absolutely
8672 * return an error so that it is not processed. At the moment this
8673 * cannot happen, but if the parsers are to change in the future,
8674 * we want this check to be maintained.
8675 */
8676 if (unlikely(s->req->buf->i + s->req->buf->p >
8677 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8678 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8679 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8680 return 1;
8681 }
8682
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8683 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8684 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8685 s->flags |= SN_REDIRECTABLE;
8686
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8687 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
8688 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8689 }
8690
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8691 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8692 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8693 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8694
8695 /* otherwise everything's ready for the request */
8696 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8697 else {
8698 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8699 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
8700 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8701 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8702 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8703 }
8704
8705 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8706 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8707 return 1;
8708}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8709
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8710#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8711 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]8712
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8713#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8714 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]8715
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8716
8717/* 1. Check on METHOD
8718 * We use the pre-parsed method if it is known, and store its number as an
8719 * integer. If it is unknown, we use the pointer and the length.
8720 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8721static 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]8722{
8723 int len, meth;
8724
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8725 len = strlen(*text);
8726 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8727
Thierry FOURNIERdd69a042013-11-22 19:14:42 +0100[diff] [blame]8728 pattern->smp = smp;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8729 pattern->val.i = meth;
8730 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8731 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8732 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8733 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8734 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8735 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8736 pattern->len = len;
8737 }
8738 return 1;
8739}
8740
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8741/* This function fetches the method of current HTTP request and stores
8742 * it in the global pattern struct as a chunk. There are two possibilities :
8743 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8744 * in <len> and <ptr> is NULL ;
8745 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8746 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8747 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8748 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8749static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8750smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8751 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8752{
8753 int meth;
8754 struct http_txn *txn = l7;
8755
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8756 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8757
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8758 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8759 smp->type = SMP_T_UINT;
8760 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8761 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8762 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8763 /* ensure the indexes are not affected */
8764 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8765 smp->type = SMP_T_CSTR;
8766 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8767 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8768 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8769 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8770 return 1;
8771}
8772
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8773/* See above how the method is stored in the global pattern */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]8774static enum pat_match_res pat_match_meth(struct sample *smp, struct pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8775{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8776 int icase;
8777
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8778
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8779 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8780 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8781 if (smp->data.uint == pattern->val.i)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8782 return PAT_MATCH;
8783 return PAT_NOMATCH;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8784 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8785
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8786 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8787 if (pattern->val.i != HTTP_METH_OTHER)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8788 return PAT_NOMATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8789
8790 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8791 if (pattern->len != smp->data.str.len)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8792 return PAT_NOMATCH;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8793
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8794 icase = pattern->flags & PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8795 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8796 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8797 return PAT_NOMATCH;
8798 return PAT_MATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8799}
8800
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8801static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8802smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8803 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8804{
8805 struct http_txn *txn = l7;
8806 char *ptr;
8807 int len;
8808
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8809 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8810
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8811 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8812 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8813
8814 while ((len-- > 0) && (*ptr++ != '/'));
8815 if (len <= 0)
8816 return 0;
8817
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8818 smp->type = SMP_T_CSTR;
8819 smp->data.str.str = ptr;
8820 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8821
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8822 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8823 return 1;
8824}
8825
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8826static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8827smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8828 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8829{
8830 struct http_txn *txn = l7;
8831 char *ptr;
8832 int len;
8833
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8834 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8835
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8836 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8837 return 0;
8838
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8839 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8840 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8841
8842 while ((len-- > 0) && (*ptr++ != '/'));
8843 if (len <= 0)
8844 return 0;
8845
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8846 smp->type = SMP_T_CSTR;
8847 smp->data.str.str = ptr;
8848 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8849
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8850 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8851 return 1;
8852}
8853
8854/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8855static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8856smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8857 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8858{
8859 struct http_txn *txn = l7;
8860 char *ptr;
8861 int len;
8862
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8863 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8864
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8865 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8866 return 0;
8867
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8868 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8869 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8870
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8871 smp->type = SMP_T_UINT;
8872 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8873 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8874 return 1;
8875}
8876
8877/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8878static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8879smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8880 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8881{
8882 struct http_txn *txn = l7;
8883
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8884 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8885
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8886 smp->type = SMP_T_CSTR;
8887 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8888 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8889 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8890 return 1;
8891}
8892
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8893static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8894smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8895 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8896{
8897 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8898 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8899
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8900 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8901
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8902 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
8903 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8904 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8905
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8906 smp->type = SMP_T_IPV4;
8907 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8908 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8909 return 1;
8910}
8911
8912static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8913smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8914 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8915{
8916 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8917 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8918
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8919 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8920
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8921 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
8922 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
8923 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8924
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8925 smp->type = SMP_T_UINT;
8926 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8927 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8928 return 1;
8929}
8930
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8931/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8932 * Accepts an optional argument of type string containing the header field name,
8933 * and an optional argument of type signed or unsigned integer to request an
8934 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8935 * headers are considered from the first one. It does not stop on commas and
8936 * returns full lines instead (useful for User-Agent or Date for example).
8937 */
8938static int
8939smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8940 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8941{
8942 struct http_txn *txn = l7;
8943 struct hdr_idx *idx = &txn->hdr_idx;
8944 struct hdr_ctx *ctx = smp->ctx.a[0];
8945 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
8946 int occ = 0;
8947 const char *name_str = NULL;
8948 int name_len = 0;
8949
8950 if (!ctx) {
8951 /* first call */
8952 ctx = &static_hdr_ctx;
8953 ctx->idx = 0;
8954 smp->ctx.a[0] = ctx;
8955 }
8956
8957 if (args) {
8958 if (args[0].type != ARGT_STR)
8959 return 0;
8960 name_str = args[0].data.str.str;
8961 name_len = args[0].data.str.len;
8962
8963 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8964 occ = args[1].data.uint;
8965 }
8966
8967 CHECK_HTTP_MESSAGE_FIRST();
8968
8969 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
8970 /* search for header from the beginning */
8971 ctx->idx = 0;
8972
8973 if (!occ && !(opt & SMP_OPT_ITERATE))
8974 /* no explicit occurrence and single fetch => last header by default */
8975 occ = -1;
8976
8977 if (!occ)
8978 /* prepare to report multiple occurrences for ACL fetches */
8979 smp->flags |= SMP_F_NOT_LAST;
8980
8981 smp->type = SMP_T_CSTR;
8982 smp->flags |= SMP_F_VOL_HDR;
8983 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
8984 return 1;
8985
8986 smp->flags &= ~SMP_F_NOT_LAST;
8987 return 0;
8988}
8989
8990/* 6. Check on HTTP header count. The number of occurrences is returned.
8991 * Accepts exactly 1 argument of type string. It does not stop on commas and
8992 * returns full lines instead (useful for User-Agent or Date for example).
8993 */
8994static int
8995smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8996 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8997{
8998 struct http_txn *txn = l7;
8999 struct hdr_idx *idx = &txn->hdr_idx;
9000 struct hdr_ctx ctx;
9001 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9002 int cnt;
9003
9004 if (!args || args->type != ARGT_STR)
9005 return 0;
9006
9007 CHECK_HTTP_MESSAGE_FIRST();
9008
9009 ctx.idx = 0;
9010 cnt = 0;
9011 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9012 cnt++;
9013
9014 smp->type = SMP_T_UINT;
9015 smp->data.uint = cnt;
9016 smp->flags = SMP_F_VOL_HDR;
9017 return 1;
9018}
9019
9020/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9021 * Accepts an optional argument of type string containing the header field name,
9022 * and an optional argument of type signed or unsigned integer to request an
9023 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9024 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9025 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9026static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9027smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9028 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9029{
9030 struct http_txn *txn = l7;
9031 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9032 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9033 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]9034 int occ = 0;
9035 const char *name_str = NULL;
9036 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9037
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9038 if (!ctx) {
9039 /* first call */
9040 ctx = &static_hdr_ctx;
9041 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9042 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9043 }
9044
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9045 if (args) {
9046 if (args[0].type != ARGT_STR)
9047 return 0;
9048 name_str = args[0].data.str.str;
9049 name_len = args[0].data.str.len;
9050
9051 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9052 occ = args[1].data.uint;
9053 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9054
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9055 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9056
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9057 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9058 /* search for header from the beginning */
9059 ctx->idx = 0;
9060
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9061 if (!occ && !(opt & SMP_OPT_ITERATE))
9062 /* no explicit occurrence and single fetch => last header by default */
9063 occ = -1;
9064
9065 if (!occ)
9066 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9067 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9068
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9069 smp->type = SMP_T_CSTR;
9070 smp->flags |= SMP_F_VOL_HDR;
9071 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]9072 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9073
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9074 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9075 return 0;
9076}
9077
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9078/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9079 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9080 */
9081static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9082smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9083 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9084{
9085 struct http_txn *txn = l7;
9086 struct hdr_idx *idx = &txn->hdr_idx;
9087 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9088 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]9089 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9090
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9091 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9092 return 0;
9093
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9094 CHECK_HTTP_MESSAGE_FIRST();
9095
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9096 ctx.idx = 0;
9097 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9098 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]9099 cnt++;
9100
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9101 smp->type = SMP_T_UINT;
9102 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9103 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9104 return 1;
9105}
9106
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9107/* Fetch an HTTP header's integer value. The integer value is returned. It
9108 * takes a mandatory argument of type string and an optional one of type int
9109 * to designate a specific occurrence. It returns an unsigned integer, which
9110 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9111 */
9112static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9113smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9114 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9115{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9116 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9117
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9118 if (ret > 0) {
9119 smp->type = SMP_T_UINT;
9120 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9121 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9122
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9123 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9124}
9125
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9126/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9127 * and an optional one of type int to designate a specific occurrence.
9128 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9129 */
9130static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9131smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9132 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9133{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9134 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9135
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9136 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9137 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9138 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9139 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9140 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9141 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9142 if (smp->data.str.len < temp->size - 1) {
9143 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9144 temp->str[smp->data.str.len] = '\0';
9145 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9146 smp->type = SMP_T_IPV6;
9147 break;
9148 }
9149 }
9150 }
9151
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9152 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9153 if (!(smp->flags & SMP_F_NOT_LAST))
9154 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9155 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9156 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9157}
9158
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9159/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9160 * the first '/' after the possible hostname, and ends before the possible '?'.
9161 */
9162static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9163smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9164 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9165{
9166 struct http_txn *txn = l7;
9167 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9168
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9169 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9170
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9171 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]9172 ptr = http_get_path(txn);
9173 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9174 return 0;
9175
9176 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9177 smp->type = SMP_T_CSTR;
9178 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9179
9180 while (ptr < end && *ptr != '?')
9181 ptr++;
9182
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9183 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9184 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9185 return 1;
9186}
9187
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9188/* This produces a concatenation of the first occurrence of the Host header
9189 * followed by the path component if it begins with a slash ('/'). This means
9190 * that '*' will not be added, resulting in exactly the first Host entry.
9191 * If no Host header is found, then the path is returned as-is. The returned
9192 * value is stored in the trash so it does not need to be marked constant.
9193 */
9194static int
9195smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9196 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9197{
9198 struct http_txn *txn = l7;
9199 char *ptr, *end, *beg;
9200 struct hdr_ctx ctx;
9201
9202 CHECK_HTTP_MESSAGE_FIRST();
9203
9204 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9205 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]9206 !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9207 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9208
9209 /* 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]9210 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9211 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9212 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9213 smp->data.str.len = ctx.vlen;
9214
9215 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9216 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]9217 beg = http_get_path(txn);
9218 if (!beg)
9219 beg = end;
9220
9221 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9222
9223 if (beg < ptr && *beg == '/') {
9224 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9225 smp->data.str.len += ptr - beg;
9226 }
9227
9228 smp->flags = SMP_F_VOL_1ST;
9229 return 1;
9230}
9231
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9232/* This produces a 32-bit hash of the concatenation of the first occurrence of
9233 * the Host header followed by the path component if it begins with a slash ('/').
9234 * This means that '*' will not be added, resulting in exactly the first Host
9235 * 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]9236 * is hashed using the path hash followed by a full avalanche hash and provides a
9237 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9238 * high-traffic sites without having to store whole paths.
9239 */
9240static int
9241smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9242 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9243{
9244 struct http_txn *txn = l7;
9245 struct hdr_ctx ctx;
9246 unsigned int hash = 0;
9247 char *ptr, *beg, *end;
9248 int len;
9249
9250 CHECK_HTTP_MESSAGE_FIRST();
9251
9252 ctx.idx = 0;
9253 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9254 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9255 ptr = ctx.line + ctx.val;
9256 len = ctx.vlen;
9257 while (len--)
9258 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9259 }
9260
9261 /* now retrieve the path */
9262 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9263 beg = http_get_path(txn);
9264 if (!beg)
9265 beg = end;
9266
9267 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9268
9269 if (beg < ptr && *beg == '/') {
9270 while (beg < ptr)
9271 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9272 }
9273 hash = full_hash(hash);
9274
9275 smp->type = SMP_T_UINT;
9276 smp->data.uint = hash;
9277 smp->flags = SMP_F_VOL_1ST;
9278 return 1;
9279}
9280
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9281/* 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]9282 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9283 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9284 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9285 * that in environments where IPv6 is insignificant, truncating the output to
9286 * 8 bytes would still work.
9287 */
9288static int
9289smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9290 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9291{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9292 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9293 struct connection *cli_conn = objt_conn(l4->si[0].end);
9294
9295 if (!cli_conn)
9296 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9297
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9298 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9299 return 0;
9300
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9301 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9302 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9303 temp->len += sizeof(smp->data.uint);
9304
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9305 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9306 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9307 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]9308 temp->len += 4;
9309 break;
9310 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9311 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]9312 temp->len += 16;
9313 break;
9314 default:
9315 return 0;
9316 }
9317
9318 smp->data.str = *temp;
9319 smp->type = SMP_T_BIN;
9320 return 1;
9321}
9322
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9323static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9324smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9325 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9326{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9327 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9328 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9329 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9330
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9331 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9332
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9333 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9334 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9335 return 1;
9336}
9337
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9338/* return a valid test if the current request is the first one on the connection */
9339static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9340smp_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]9341 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9342{
9343 if (!s)
9344 return 0;
9345
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9346 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9347 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9348 return 1;
9349}
9350
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9351/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9352static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9353smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9354 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9355{
9356
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9357 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9358 return 0;
9359
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9360 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9361
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9362 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9363 return 0;
9364
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9365 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9366 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]9367 return 1;
9368}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9369
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9370/* Accepts exactly 1 argument of type userlist */
9371static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9372smp_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]9373 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9374{
9375
9376 if (!args || args->type != ARGT_USR)
9377 return 0;
9378
9379 CHECK_HTTP_MESSAGE_FIRST();
9380
9381 if (!get_http_auth(l4))
9382 return 0;
9383
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9384 /* pat_match_auth() will need several information at once */
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9385 smp->ctx.a[0] = args->data.usr; /* user list */
9386 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9387 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9388
9389 /* if the user does not belong to the userlist or has a wrong password,
9390 * report that it unconditionally does not match. Otherwise we return
9391 * a non-zero integer which will be ignored anyway since all the params
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9392 * that pat_match_auth() will use are in test->ctx.a[0,1,2].
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9393 */
9394 smp->type = SMP_T_BOOL;
9395 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9396 if (smp->data.uint)
9397 smp->type = SMP_T_UINT;
9398
9399 return 1;
9400}
9401
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9402/* Try to find the next occurrence of a cookie name in a cookie header value.
9403 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9404 * the cookie value is returned into *value and *value_l, and the function
9405 * returns a pointer to the next pointer to search from if the value was found.
9406 * Otherwise if the cookie was not found, NULL is returned and neither value
9407 * nor value_l are touched. The input <hdr> string should first point to the
9408 * header's value, and the <hdr_end> pointer must point to the first character
9409 * not part of the value. <list> must be non-zero if value may represent a list
9410 * of values (cookie headers). This makes it faster to abort parsing when no
9411 * list is expected.
9412 */
9413static char *
9414extract_cookie_value(char *hdr, const char *hdr_end,
9415 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9416 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9417{
9418 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9419 char *next;
9420
9421 /* we search at least a cookie name followed by an equal, and more
9422 * generally something like this :
9423 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9424 */
9425 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9426 /* Iterate through all cookies on this line */
9427
9428 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9429 att_beg++;
9430
9431 /* find att_end : this is the first character after the last non
9432 * space before the equal. It may be equal to hdr_end.
9433 */
9434 equal = att_end = att_beg;
9435
9436 while (equal < hdr_end) {
9437 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9438 break;
9439 if (http_is_spht[(unsigned char)*equal++])
9440 continue;
9441 att_end = equal;
9442 }
9443
9444 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9445 * is between <att_beg> and <equal>, both may be identical.
9446 */
9447
9448 /* look for end of cookie if there is an equal sign */
9449 if (equal < hdr_end && *equal == '=') {
9450 /* look for the beginning of the value */
9451 val_beg = equal + 1;
9452 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9453 val_beg++;
9454
9455 /* find the end of the value, respecting quotes */
9456 next = find_cookie_value_end(val_beg, hdr_end);
9457
9458 /* make val_end point to the first white space or delimitor after the value */
9459 val_end = next;
9460 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9461 val_end--;
9462 } else {
9463 val_beg = val_end = next = equal;
9464 }
9465
9466 /* We have nothing to do with attributes beginning with '$'. However,
9467 * they will automatically be removed if a header before them is removed,
9468 * since they're supposed to be linked together.
9469 */
9470 if (*att_beg == '$')
9471 continue;
9472
9473 /* Ignore cookies with no equal sign */
9474 if (equal == next)
9475 continue;
9476
9477 /* Now we have the cookie name between att_beg and att_end, and
9478 * its value between val_beg and val_end.
9479 */
9480
9481 if (att_end - att_beg == cookie_name_l &&
9482 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9483 /* let's return this value and indicate where to go on from */
9484 *value = val_beg;
9485 *value_l = val_end - val_beg;
9486 return next + 1;
9487 }
9488
9489 /* Set-Cookie headers only have the name in the first attr=value part */
9490 if (!list)
9491 break;
9492 }
9493
9494 return NULL;
9495}
9496
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9497/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9498 * 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]9499 * 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]9500 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9501 * 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]9502 * Accepts exactly 1 argument of type string. If the input options indicate
9503 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9504 */
9505static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9506smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9507 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9508{
9509 struct http_txn *txn = l7;
9510 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9511 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9512 const struct http_msg *msg;
9513 const char *hdr_name;
9514 int hdr_name_len;
9515 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9516 int occ = 0;
9517 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9518
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9519 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9520 return 0;
9521
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9522 if (!ctx) {
9523 /* first call */
9524 ctx = &static_hdr_ctx;
9525 ctx->idx = 0;
9526 smp->ctx.a[2] = ctx;
9527 }
9528
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9529 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9530
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9531 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9532 msg = &txn->req;
9533 hdr_name = "Cookie";
9534 hdr_name_len = 6;
9535 } else {
9536 msg = &txn->rsp;
9537 hdr_name = "Set-Cookie";
9538 hdr_name_len = 10;
9539 }
9540
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9541 if (!occ && !(opt & SMP_OPT_ITERATE))
9542 /* no explicit occurrence and single fetch => last cookie by default */
9543 occ = -1;
9544
9545 /* OK so basically here, either we want only one value and it's the
9546 * last one, or we want to iterate over all of them and we fetch the
9547 * next one.
9548 */
9549
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9550 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9551 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9552 /* search for the header from the beginning, we must first initialize
9553 * the search parameters.
9554 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9555 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9556 ctx->idx = 0;
9557 }
9558
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9559 smp->flags |= SMP_F_VOL_HDR;
9560
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9561 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9562 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9563 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9564 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9565 goto out;
9566
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9567 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9568 continue;
9569
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9570 smp->ctx.a[0] = ctx->line + ctx->val;
9571 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9572 }
9573
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9574 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9575 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]9576 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9577 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9578 &smp->data.str.str,
9579 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9580 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9581 found = 1;
9582 if (occ >= 0) {
9583 /* one value was returned into smp->data.str.{str,len} */
9584 smp->flags |= SMP_F_NOT_LAST;
9585 return 1;
9586 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9587 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9588 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9589 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9590 /* all cookie headers and values were scanned. If we're looking for the
9591 * last occurrence, we may return it now.
9592 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9593 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9594 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9595 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9596}
9597
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9598/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9599 * 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]9600 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9601 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9602 */
9603static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9604smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9605 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9606{
9607 struct http_txn *txn = l7;
9608 struct hdr_idx *idx = &txn->hdr_idx;
9609 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9610 const struct http_msg *msg;
9611 const char *hdr_name;
9612 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9613 int cnt;
9614 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9615 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9616
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9617 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9618 return 0;
9619
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9620 CHECK_HTTP_MESSAGE_FIRST();
9621
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9622 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9623 msg = &txn->req;
9624 hdr_name = "Cookie";
9625 hdr_name_len = 6;
9626 } else {
9627 msg = &txn->rsp;
9628 hdr_name = "Set-Cookie";
9629 hdr_name_len = 10;
9630 }
9631
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9632 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9633 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9634 ctx.idx = 0;
9635 cnt = 0;
9636
9637 while (1) {
9638 /* Note: val_beg == NULL every time we need to fetch a new header */
9639 if (!val_beg) {
9640 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9641 break;
9642
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9643 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9644 continue;
9645
9646 val_beg = ctx.line + ctx.val;
9647 val_end = val_beg + ctx.vlen;
9648 }
9649
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9650 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9651 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9652 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9653 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9654 &smp->data.str.str,
9655 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9656 cnt++;
9657 }
9658 }
9659
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9660 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9661 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9662 return 1;
9663}
9664
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9665/* Fetch an cookie's integer value. The integer value is returned. It
9666 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9667 */
9668static int
9669smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9670 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9671{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9672 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9673
9674 if (ret > 0) {
9675 smp->type = SMP_T_UINT;
9676 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9677 }
9678
9679 return ret;
9680}
9681
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9682/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9683/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9684/************************************************************************/
9685
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9686/*
9687 * Given a path string and its length, find the position of beginning of the
9688 * query string. Returns NULL if no query string is found in the path.
9689 *
9690 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9691 *
9692 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9693 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9694static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9695{
9696 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9697
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9698 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9699 return p ? p + 1 : NULL;
9700}
9701
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9702static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9703{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9704 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9705}
9706
9707/*
9708 * Given a url parameter, find the starting position of the first occurence,
9709 * or NULL if the parameter is not found.
9710 *
9711 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9712 * the function will return query_string+8.
9713 */
9714static char*
9715find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9716 char* url_param_name, size_t url_param_name_l,
9717 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9718{
9719 char *pos, *last;
9720
9721 pos = query_string;
9722 last = query_string + query_string_l - url_param_name_l - 1;
9723
9724 while (pos <= last) {
9725 if (pos[url_param_name_l] == '=') {
9726 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9727 return pos;
9728 pos += url_param_name_l + 1;
9729 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9730 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9731 pos++;
9732 pos++;
9733 }
9734 return NULL;
9735}
9736
9737/*
9738 * Given a url parameter name, returns its value and size into *value and
9739 * *value_l respectively, and returns non-zero. If the parameter is not found,
9740 * zero is returned and value/value_l are not touched.
9741 */
9742static int
9743find_url_param_value(char* path, size_t path_l,
9744 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9745 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9746{
9747 char *query_string, *qs_end;
9748 char *arg_start;
9749 char *value_start, *value_end;
9750
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9751 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9752 if (!query_string)
9753 return 0;
9754
9755 qs_end = path + path_l;
9756 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9757 url_param_name, url_param_name_l,
9758 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9759 if (!arg_start)
9760 return 0;
9761
9762 value_start = arg_start + url_param_name_l + 1;
9763 value_end = value_start;
9764
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9765 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9766 value_end++;
9767
9768 *value = value_start;
9769 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9770 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9771}
9772
9773static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9774smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9775 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9776{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9777 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9778 struct http_txn *txn = l7;
9779 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9780
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9781 if (!args || args[0].type != ARGT_STR ||
9782 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9783 return 0;
9784
9785 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9786
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9787 if (args[1].type)
9788 delim = *args[1].data.str.str;
9789
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9790 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]9791 args->data.str.str, args->data.str.len,
9792 &smp->data.str.str, &smp->data.str.len,
9793 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9794 return 0;
9795
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9796 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9797 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9798 return 1;
9799}
9800
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9801/* Return the signed integer value for the specified url parameter (see url_param
9802 * above).
9803 */
9804static int
9805smp_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]9806 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9807{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9808 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9809
9810 if (ret > 0) {
9811 smp->type = SMP_T_UINT;
9812 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9813 }
9814
9815 return ret;
9816}
9817
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9818/* This produces a 32-bit hash of the concatenation of the first occurrence of
9819 * the Host header followed by the path component if it begins with a slash ('/').
9820 * This means that '*' will not be added, resulting in exactly the first Host
9821 * entry. If no Host header is found, then the path is used. The resulting value
9822 * is hashed using the url hash followed by a full avalanche hash and provides a
9823 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
9824 * high-traffic sites without having to store whole paths.
9825 * this differs from the base32 functions in that it includes the url parameters
9826 * as well as the path
9827 */
9828static int
9829smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9830 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9831{
9832 struct http_txn *txn = l7;
9833 struct hdr_ctx ctx;
9834 unsigned int hash = 0;
9835 char *ptr, *beg, *end;
9836 int len;
9837
9838 CHECK_HTTP_MESSAGE_FIRST();
9839
9840 ctx.idx = 0;
9841 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9842 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9843 ptr = ctx.line + ctx.val;
9844 len = ctx.vlen;
9845 while (len--)
9846 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9847 }
9848
9849 /* now retrieve the path */
9850 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9851 beg = http_get_path(txn);
9852 if (!beg)
9853 beg = end;
9854
9855 for (ptr = beg; ptr < end ; ptr++);
9856
9857 if (beg < ptr && *beg == '/') {
9858 while (beg < ptr)
9859 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9860 }
9861 hash = full_hash(hash);
9862
9863 smp->type = SMP_T_UINT;
9864 smp->data.uint = hash;
9865 smp->flags = SMP_F_VOL_1ST;
9866 return 1;
9867}
9868
9869/* This concatenates the source address with the 32-bit hash of the Host and
9870 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
9871 * per-url counters. The result is a binary block from 8 to 20 bytes depending
9872 * on the source address length. The URL hash is stored before the address so
9873 * that in environments where IPv6 is insignificant, truncating the output to
9874 * 8 bytes would still work.
9875 */
9876static int
9877smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9878 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9879{
9880 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9881 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9882
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9883 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9884 return 0;
9885
9886 temp = get_trash_chunk();
9887 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9888 temp->len += sizeof(smp->data.uint);
9889
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9890 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9891 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9892 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]9893 temp->len += 4;
9894 break;
9895 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9896 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]9897 temp->len += 16;
9898 break;
9899 default:
9900 return 0;
9901 }
9902
9903 smp->data.str = *temp;
9904 smp->type = SMP_T_BIN;
9905 return 1;
9906}
9907
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9908/* This function is used to validate the arguments passed to any "hdr" fetch
9909 * keyword. These keywords support an optional positive or negative occurrence
9910 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9911 * is assumed that the types are already the correct ones. Returns 0 on error,
9912 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9913 * error message in case of error, that the caller is responsible for freeing.
9914 * The initial location must either be freeable or NULL.
9915 */
9916static int val_hdr(struct arg *arg, char **err_msg)
9917{
9918 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9919 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9920 return 0;
9921 }
9922 return 1;
9923}
9924
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]9925/* takes an UINT value on input supposed to represent the time since EPOCH,
9926 * adds an optional offset found in args[0] and emits a string representing
9927 * the date in RFC-1123/5322 format.
9928 */
9929static int sample_conv_http_date(const struct arg *args, struct sample *smp)
9930{
9931 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
9932 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
9933 struct chunk *temp;
9934 struct tm *tm;
9935 time_t curr_date = smp->data.uint;
9936
9937 /* add offset */
9938 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
9939 curr_date += args[0].data.sint;
9940
9941 tm = gmtime(&curr_date);
9942
9943 temp = get_trash_chunk();
9944 temp->len = snprintf(temp->str, temp->size - temp->len,
9945 "%s, %02d %s %04d %02d:%02d:%02d GMT",
9946 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
9947 tm->tm_hour, tm->tm_min, tm->tm_sec);
9948
9949 smp->data.str = *temp;
9950 smp->type = SMP_T_STR;
9951 return 1;
9952}
9953
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9954/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9955/* All supported ACL keywords must be declared here. */
9956/************************************************************************/
9957
9958/* Note: must not be declared <const> as its list will be overwritten.
9959 * Please take care of keeping this list alphabetically sorted.
9960 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]9961static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9962 { "base", "base", pat_parse_str, pat_match_str },
9963 { "base_beg", "base", pat_parse_str, pat_match_beg },
9964 { "base_dir", "base", pat_parse_str, pat_match_dir },
9965 { "base_dom", "base", pat_parse_str, pat_match_dom },
9966 { "base_end", "base", pat_parse_str, pat_match_end },
9967 { "base_len", "base", pat_parse_int, pat_match_len },
9968 { "base_reg", "base", pat_parse_reg, pat_match_reg },
9969 { "base_sub", "base", pat_parse_str, pat_match_sub },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9970
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9971 { "cook", "req.cook", pat_parse_str, pat_match_str },
9972 { "cook_beg", "req.cook", pat_parse_str, pat_match_beg },
9973 { "cook_dir", "req.cook", pat_parse_str, pat_match_dir },
9974 { "cook_dom", "req.cook", pat_parse_str, pat_match_dom },
9975 { "cook_end", "req.cook", pat_parse_str, pat_match_end },
9976 { "cook_len", "req.cook", pat_parse_int, pat_match_len },
9977 { "cook_reg", "req.cook", pat_parse_reg, pat_match_reg },
9978 { "cook_sub", "req.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9979
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9980 { "hdr", "req.hdr", pat_parse_str, pat_match_str },
9981 { "hdr_beg", "req.hdr", pat_parse_str, pat_match_beg },
9982 { "hdr_dir", "req.hdr", pat_parse_str, pat_match_dir },
9983 { "hdr_dom", "req.hdr", pat_parse_str, pat_match_dom },
9984 { "hdr_end", "req.hdr", pat_parse_str, pat_match_end },
9985 { "hdr_len", "req.hdr", pat_parse_int, pat_match_len },
9986 { "hdr_reg", "req.hdr", pat_parse_reg, pat_match_reg },
9987 { "hdr_sub", "req.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9988
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9989 { "http_auth_group", NULL, pat_parse_strcat, pat_match_auth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9990
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9991 { "method", NULL, pat_parse_meth, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9992
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9993 { "path", "path", pat_parse_str, pat_match_str },
9994 { "path_beg", "path", pat_parse_str, pat_match_beg },
9995 { "path_dir", "path", pat_parse_str, pat_match_dir },
9996 { "path_dom", "path", pat_parse_str, pat_match_dom },
9997 { "path_end", "path", pat_parse_str, pat_match_end },
9998 { "path_len", "path", pat_parse_int, pat_match_len },
9999 { "path_reg", "path", pat_parse_reg, pat_match_reg },
10000 { "path_sub", "path", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10001
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10002 { "req_ver", "req.ver", pat_parse_str, pat_match_str },
10003 { "resp_ver", "res.ver", pat_parse_str, pat_match_str },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10004
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10005 { "scook", "res.cook", pat_parse_str, pat_match_str },
10006 { "scook_beg", "res.cook", pat_parse_str, pat_match_beg },
10007 { "scook_dir", "res.cook", pat_parse_str, pat_match_dir },
10008 { "scook_dom", "res.cook", pat_parse_str, pat_match_dom },
10009 { "scook_end", "res.cook", pat_parse_str, pat_match_end },
10010 { "scook_len", "res.cook", pat_parse_int, pat_match_len },
10011 { "scook_reg", "res.cook", pat_parse_reg, pat_match_reg },
10012 { "scook_sub", "res.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10013
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10014 { "shdr", "res.hdr", pat_parse_str, pat_match_str },
10015 { "shdr_beg", "res.hdr", pat_parse_str, pat_match_beg },
10016 { "shdr_dir", "res.hdr", pat_parse_str, pat_match_dir },
10017 { "shdr_dom", "res.hdr", pat_parse_str, pat_match_dom },
10018 { "shdr_end", "res.hdr", pat_parse_str, pat_match_end },
10019 { "shdr_len", "res.hdr", pat_parse_int, pat_match_len },
10020 { "shdr_reg", "res.hdr", pat_parse_reg, pat_match_reg },
10021 { "shdr_sub", "res.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10022
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10023 { "url", "url", pat_parse_str, pat_match_str },
10024 { "url_beg", "url", pat_parse_str, pat_match_beg },
10025 { "url_dir", "url", pat_parse_str, pat_match_dir },
10026 { "url_dom", "url", pat_parse_str, pat_match_dom },
10027 { "url_end", "url", pat_parse_str, pat_match_end },
10028 { "url_len", "url", pat_parse_int, pat_match_len },
10029 { "url_reg", "url", pat_parse_reg, pat_match_reg },
10030 { "url_sub", "url", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10031
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10032 { "urlp", "urlp", pat_parse_str, pat_match_str },
10033 { "urlp_beg", "urlp", pat_parse_str, pat_match_beg },
10034 { "urlp_dir", "urlp", pat_parse_str, pat_match_dir },
10035 { "urlp_dom", "urlp", pat_parse_str, pat_match_dom },
10036 { "urlp_end", "urlp", pat_parse_str, pat_match_end },
10037 { "urlp_len", "urlp", pat_parse_int, pat_match_len },
10038 { "urlp_reg", "urlp", pat_parse_reg, pat_match_reg },
10039 { "urlp_sub", "urlp", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10040
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10041 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10042}};
10043
10044/************************************************************************/
10045/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10046/************************************************************************/
10047/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10048static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10049 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10050 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10051 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10052
10053 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10054 * are only here to match the ACL's name, are request-only and are used
10055 * for ACL compatibility only.
10056 */
10057 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10058 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10059 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10060 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10061
10062 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10063 * only here to match the ACL's name, are request-only and are used for
10064 * ACL compatibility only.
10065 */
10066 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10067 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10068 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10069 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10070
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10071 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
10072 { "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]10073 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
10074 { "method", smp_fetch_meth, 0, NULL, SMP_T_UINT, SMP_USE_HRQHP },
10075 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10076
10077 /* HTTP protocol on the request path */
10078 { "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]10079 { "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]10080
10081 /* HTTP version on the request path */
10082 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10083 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10084
10085 /* HTTP version on the response path */
10086 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10087 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10088
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10089 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
10090 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10091 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10092 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10093
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10094 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10095 { "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]10096 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10097 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10098 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10099 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10100
10101 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
10102 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10103 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10104 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10105
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10106 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10107 { "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]10108 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10109 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10110 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10111 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10112
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10113 /* scook is valid only on the response and is used for ACL compatibility */
10114 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10115 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10116 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10117 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
10118
10119 /* shdr is valid only on the response and is used for ACL compatibility */
10120 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10121 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10122 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10123 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10124
10125 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
10126 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10127 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10128 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10129 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10130 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10131 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10132 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10133 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10134 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10135}};
10136
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10137
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10138/* Note: must not be declared <const> as its list will be overwritten */
10139static struct sample_conv_kw_list sample_conv_kws = {ILH, {
10140 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR },
10141 { NULL, NULL, 0, 0, 0 },
10142}};
10143
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10144__attribute__((constructor))
10145static void __http_protocol_init(void)
10146{
10147 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10148 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10149 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10150}
10151
10152
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10153/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10154 * Local variables:
10155 * c-indent-level: 8
10156 * c-basic-offset: 8
10157 * End:
10158 */