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git01.mediatek.com / haproxy / abcd5145f82cff7beb6b1b25b90a8266d672a6f7 / . / src / proto_http.c
blob: de9b331300d86a1338ddf293dab979f7a735ee4a [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>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]78 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]79 "Location: "; /* not terminated since it will be concatenated with the URL */
80
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]81const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]82 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]84 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]85 "Location: "; /* not terminated since it will be concatenated with the URL */
86
87/* same as 302 except that the browser MUST retry with the GET method */
88const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]89 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]90 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]91 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]92 "Location: "; /* not terminated since it will be concatenated with the URL */
93
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]94
95/* same as 302 except that the browser MUST retry with the same method */
96const char *HTTP_307 =
97 "HTTP/1.1 307 Temporary Redirect\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Content-length: 0\r\n"
100 "Location: "; /* not terminated since it will be concatenated with the URL */
101
102/* same as 301 except that the browser MUST retry with the same method */
103const char *HTTP_308 =
104 "HTTP/1.1 308 Permanent Redirect\r\n"
105 "Content-length: 0\r\n"
106 "Location: "; /* not terminated since it will be concatenated with the URL */
107
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]108/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
109const char *HTTP_401_fmt =
110 "HTTP/1.0 401 Unauthorized\r\n"
111 "Cache-Control: no-cache\r\n"
112 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]113 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]114 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
115 "\r\n"
116 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
117
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]118const char *HTTP_407_fmt =
119 "HTTP/1.0 407 Unauthorized\r\n"
120 "Cache-Control: no-cache\r\n"
121 "Connection: close\r\n"
122 "Content-Type: text/html\r\n"
123 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
124 "\r\n"
125 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
126
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]127
128const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]129 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]130 [HTTP_ERR_400] = 400,
131 [HTTP_ERR_403] = 403,
132 [HTTP_ERR_408] = 408,
133 [HTTP_ERR_500] = 500,
134 [HTTP_ERR_502] = 502,
135 [HTTP_ERR_503] = 503,
136 [HTTP_ERR_504] = 504,
137};
138
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]139static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]140 [HTTP_ERR_200] =
141 "HTTP/1.0 200 OK\r\n"
142 "Cache-Control: no-cache\r\n"
143 "Connection: close\r\n"
144 "Content-Type: text/html\r\n"
145 "\r\n"
146 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
147
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]148 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]149 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]150 "Cache-Control: no-cache\r\n"
151 "Connection: close\r\n"
152 "Content-Type: text/html\r\n"
153 "\r\n"
154 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
155
156 [HTTP_ERR_403] =
157 "HTTP/1.0 403 Forbidden\r\n"
158 "Cache-Control: no-cache\r\n"
159 "Connection: close\r\n"
160 "Content-Type: text/html\r\n"
161 "\r\n"
162 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
163
164 [HTTP_ERR_408] =
165 "HTTP/1.0 408 Request Time-out\r\n"
166 "Cache-Control: no-cache\r\n"
167 "Connection: close\r\n"
168 "Content-Type: text/html\r\n"
169 "\r\n"
170 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
171
172 [HTTP_ERR_500] =
173 "HTTP/1.0 500 Server Error\r\n"
174 "Cache-Control: no-cache\r\n"
175 "Connection: close\r\n"
176 "Content-Type: text/html\r\n"
177 "\r\n"
178 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
179
180 [HTTP_ERR_502] =
181 "HTTP/1.0 502 Bad Gateway\r\n"
182 "Cache-Control: no-cache\r\n"
183 "Connection: close\r\n"
184 "Content-Type: text/html\r\n"
185 "\r\n"
186 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
187
188 [HTTP_ERR_503] =
189 "HTTP/1.0 503 Service Unavailable\r\n"
190 "Cache-Control: no-cache\r\n"
191 "Connection: close\r\n"
192 "Content-Type: text/html\r\n"
193 "\r\n"
194 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
195
196 [HTTP_ERR_504] =
197 "HTTP/1.0 504 Gateway Time-out\r\n"
198 "Cache-Control: no-cache\r\n"
199 "Connection: close\r\n"
200 "Content-Type: text/html\r\n"
201 "\r\n"
202 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
203
204};
205
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]206/* status codes available for the stats admin page (strictly 4 chars length) */
207const char *stat_status_codes[STAT_STATUS_SIZE] = {
208 [STAT_STATUS_DENY] = "DENY",
209 [STAT_STATUS_DONE] = "DONE",
210 [STAT_STATUS_ERRP] = "ERRP",
211 [STAT_STATUS_EXCD] = "EXCD",
212 [STAT_STATUS_NONE] = "NONE",
213 [STAT_STATUS_PART] = "PART",
214 [STAT_STATUS_UNKN] = "UNKN",
215};
216
217
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]218/* We must put the messages here since GCC cannot initialize consts depending
219 * on strlen().
220 */
221struct chunk http_err_chunks[HTTP_ERR_SIZE];
222
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]223/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
224static struct hdr_ctx static_hdr_ctx;
225
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]226#define FD_SETS_ARE_BITFIELDS
227#ifdef FD_SETS_ARE_BITFIELDS
228/*
229 * This map is used with all the FD_* macros to check whether a particular bit
230 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
231 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
232 * byte should be encoded. Be careful to always pass bytes from 0 to 255
233 * exclusively to the macros.
234 */
235fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
236fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
237
238#else
239#error "Check if your OS uses bitfields for fd_sets"
240#endif
241
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]242void init_proto_http()
243{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]244 int i;
245 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]246 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]247
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]248 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
249 if (!http_err_msgs[msg]) {
250 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
251 abort();
252 }
253
254 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
255 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
256 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]257
258 /* initialize the log header encoding map : '{|}"#' should be encoded with
259 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
260 * URL encoding only requires '"', '#' to be encoded as well as non-
261 * printable characters above.
262 */
263 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
264 memset(url_encode_map, 0, sizeof(url_encode_map));
265 for (i = 0; i < 32; i++) {
266 FD_SET(i, hdr_encode_map);
267 FD_SET(i, url_encode_map);
268 }
269 for (i = 127; i < 256; i++) {
270 FD_SET(i, hdr_encode_map);
271 FD_SET(i, url_encode_map);
272 }
273
274 tmp = "\"#{|}";
275 while (*tmp) {
276 FD_SET(*tmp, hdr_encode_map);
277 tmp++;
278 }
279
280 tmp = "\"#";
281 while (*tmp) {
282 FD_SET(*tmp, url_encode_map);
283 tmp++;
284 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]285
286 /* memory allocations */
287 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]288 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]289}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]290
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]291/*
292 * We have 26 list of methods (1 per first letter), each of which can have
293 * up to 3 entries (2 valid, 1 null).
294 */
295struct http_method_desc {
296 http_meth_t meth;
297 int len;
298 const char text[8];
299};
300
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]301const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]302 ['C' - 'A'] = {
303 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
304 },
305 ['D' - 'A'] = {
306 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
307 },
308 ['G' - 'A'] = {
309 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
310 },
311 ['H' - 'A'] = {
312 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
313 },
314 ['P' - 'A'] = {
315 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
316 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
317 },
318 ['T' - 'A'] = {
319 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
320 },
321 /* rest is empty like this :
322 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
323 */
324};
325
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]326/* 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]327 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]328 * RFC2616 for those chars.
329 */
330
331const char http_is_spht[256] = {
332 [' '] = 1, ['\t'] = 1,
333};
334
335const char http_is_crlf[256] = {
336 ['\r'] = 1, ['\n'] = 1,
337};
338
339const char http_is_lws[256] = {
340 [' '] = 1, ['\t'] = 1,
341 ['\r'] = 1, ['\n'] = 1,
342};
343
344const char http_is_sep[256] = {
345 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
346 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
347 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
348 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
349 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
350};
351
352const char http_is_ctl[256] = {
353 [0 ... 31] = 1,
354 [127] = 1,
355};
356
357/*
358 * A token is any ASCII char that is neither a separator nor a CTL char.
359 * Do not overwrite values in assignment since gcc-2.95 will not handle
360 * them correctly. Instead, define every non-CTL char's status.
361 */
362const char http_is_token[256] = {
363 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
364 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
365 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
366 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
367 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
368 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
369 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
370 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
371 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
372 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
373 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
374 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
375 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
376 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
377 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
378 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
379 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
380 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
381 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
382 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
383 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
384 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
385 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
386 ['|'] = 1, ['}'] = 0, ['~'] = 1,
387};
388
389
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]390/*
391 * An http ver_token is any ASCII which can be found in an HTTP version,
392 * which includes 'H', 'T', 'P', '/', '.' and any digit.
393 */
394const char http_is_ver_token[256] = {
395 ['.'] = 1, ['/'] = 1,
396 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
397 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
398 ['H'] = 1, ['P'] = 1, ['T'] = 1,
399};
400
401
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]402/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]403 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
404 */
405#if defined(DEBUG_FSM)
406static void http_silent_debug(int line, struct session *s)
407{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]408 chunk_printf(&trash,
409 "[%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",
410 line,
411 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
412 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);
413 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]414
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]415 chunk_printf(&trash,
416 " %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",
417 line,
418 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
419 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);
420 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]421}
422#else
423#define http_silent_debug(l,s) do { } while (0)
424#endif
425
426/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]427 * Adds a header and its CRLF at the tail of the message's buffer, just before
428 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]429 * The header is also automatically added to the index <hdr_idx>, and the end
430 * of headers is automatically adjusted. The number of bytes added is returned
431 * on success, otherwise <0 is returned indicating an error.
432 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]433int 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]434{
435 int bytes, len;
436
437 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]438 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]439 if (!bytes)
440 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]441 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]442 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
443}
444
445/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]446 * Adds a header and its CRLF at the tail of the message's buffer, just before
447 * 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]448 * the buffer is only opened and the space reserved, but nothing is copied.
449 * The header is also automatically added to the index <hdr_idx>, and the end
450 * of headers is automatically adjusted. The number of bytes added is returned
451 * on success, otherwise <0 is returned indicating an error.
452 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]453int http_header_add_tail2(struct http_msg *msg,
454 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]455{
456 int bytes;
457
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]458 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]459 if (!bytes)
460 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]461 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]462 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
463}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]464
465/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]466 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
467 * If so, returns the position of the first non-space character relative to
468 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
469 * to return a pointer to the place after the first space. Returns 0 if the
470 * header name does not match. Checks are case-insensitive.
471 */
472int http_header_match2(const char *hdr, const char *end,
473 const char *name, int len)
474{
475 const char *val;
476
477 if (hdr + len >= end)
478 return 0;
479 if (hdr[len] != ':')
480 return 0;
481 if (strncasecmp(hdr, name, len) != 0)
482 return 0;
483 val = hdr + len + 1;
484 while (val < end && HTTP_IS_SPHT(*val))
485 val++;
486 if ((val >= end) && (len + 2 <= end - hdr))
487 return len + 2; /* we may replace starting from second space */
488 return val - hdr;
489}
490
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]491/* Find the first or next occurrence of header <name> in message buffer <sol>
492 * using headers index <idx>, and return it in the <ctx> structure. This
493 * structure holds everything necessary to use the header and find next
494 * occurrence. If its <idx> member is 0, the header is searched from the
495 * beginning. Otherwise, the next occurrence is returned. The function returns
496 * 1 when it finds a value, and 0 when there is no more. It is very similar to
497 * http_find_header2() except that it is designed to work with full-line headers
498 * whose comma is not a delimiter but is part of the syntax. As a special case,
499 * if ctx->val is NULL when searching for a new values of a header, the current
500 * header is rescanned. This allows rescanning after a header deletion.
501 */
502int http_find_full_header2(const char *name, int len,
503 char *sol, struct hdr_idx *idx,
504 struct hdr_ctx *ctx)
505{
506 char *eol, *sov;
507 int cur_idx, old_idx;
508
509 cur_idx = ctx->idx;
510 if (cur_idx) {
511 /* We have previously returned a header, let's search another one */
512 sol = ctx->line;
513 eol = sol + idx->v[cur_idx].len;
514 goto next_hdr;
515 }
516
517 /* first request for this header */
518 sol += hdr_idx_first_pos(idx);
519 old_idx = 0;
520 cur_idx = hdr_idx_first_idx(idx);
521 while (cur_idx) {
522 eol = sol + idx->v[cur_idx].len;
523
524 if (len == 0) {
525 /* No argument was passed, we want any header.
526 * To achieve this, we simply build a fake request. */
527 while (sol + len < eol && sol[len] != ':')
528 len++;
529 name = sol;
530 }
531
532 if ((len < eol - sol) &&
533 (sol[len] == ':') &&
534 (strncasecmp(sol, name, len) == 0)) {
535 ctx->del = len;
536 sov = sol + len + 1;
537 while (sov < eol && http_is_lws[(unsigned char)*sov])
538 sov++;
539
540 ctx->line = sol;
541 ctx->prev = old_idx;
542 ctx->idx = cur_idx;
543 ctx->val = sov - sol;
544 ctx->tws = 0;
545 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
546 eol--;
547 ctx->tws++;
548 }
549 ctx->vlen = eol - sov;
550 return 1;
551 }
552 next_hdr:
553 sol = eol + idx->v[cur_idx].cr + 1;
554 old_idx = cur_idx;
555 cur_idx = idx->v[cur_idx].next;
556 }
557 return 0;
558}
559
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]560/* Find the end of the header value contained between <s> and <e>. See RFC2616,
561 * par 2.2 for more information. Note that it requires a valid header to return
562 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]563 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]564char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]565{
566 int quoted, qdpair;
567
568 quoted = qdpair = 0;
569 for (; s < e; s++) {
570 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]571 else if (quoted) {
572 if (*s == '\\') qdpair = 1;
573 else if (*s == '"') quoted = 0;
574 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]575 else if (*s == '"') quoted = 1;
576 else if (*s == ',') return s;
577 }
578 return s;
579}
580
581/* Find the first or next occurrence of header <name> in message buffer <sol>
582 * using headers index <idx>, and return it in the <ctx> structure. This
583 * structure holds everything necessary to use the header and find next
584 * occurrence. If its <idx> member is 0, the header is searched from the
585 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]586 * 1 when it finds a value, and 0 when there is no more. It is designed to work
587 * with headers defined as comma-separated lists. As a special case, if ctx->val
588 * is NULL when searching for a new values of a header, the current header is
589 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]590 */
591int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]592 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]593 struct hdr_ctx *ctx)
594{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]595 char *eol, *sov;
596 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]597
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]598 cur_idx = ctx->idx;
599 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]600 /* We have previously returned a value, let's search
601 * another one on the same line.
602 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]603 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]604 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]605 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]606 eol = sol + idx->v[cur_idx].len;
607
608 if (sov >= eol)
609 /* no more values in this header */
610 goto next_hdr;
611
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]612 /* values remaining for this header, skip the comma but save it
613 * for later use (eg: for header deletion).
614 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]615 sov++;
616 while (sov < eol && http_is_lws[(unsigned char)*sov])
617 sov++;
618
619 goto return_hdr;
620 }
621
622 /* first request for this header */
623 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]624 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]625 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]626 while (cur_idx) {
627 eol = sol + idx->v[cur_idx].len;
628
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]629 if (len == 0) {
630 /* No argument was passed, we want any header.
631 * To achieve this, we simply build a fake request. */
632 while (sol + len < eol && sol[len] != ':')
633 len++;
634 name = sol;
635 }
636
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]637 if ((len < eol - sol) &&
638 (sol[len] == ':') &&
639 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]640 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]641 sov = sol + len + 1;
642 while (sov < eol && http_is_lws[(unsigned char)*sov])
643 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]644
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]645 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]646 ctx->prev = old_idx;
647 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]648 ctx->idx = cur_idx;
649 ctx->val = sov - sol;
650
651 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]652 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]653 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]654 eol--;
655 ctx->tws++;
656 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]657 ctx->vlen = eol - sov;
658 return 1;
659 }
660 next_hdr:
661 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]662 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]663 cur_idx = idx->v[cur_idx].next;
664 }
665 return 0;
666}
667
668int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]669 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]670 struct hdr_ctx *ctx)
671{
672 return http_find_header2(name, strlen(name), sol, idx, ctx);
673}
674
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]675/* Remove one value of a header. This only works on a <ctx> returned by one of
676 * the http_find_header functions. The value is removed, as well as surrounding
677 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]678 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]679 * message <msg>. The new index is returned. If it is zero, it means there is
680 * no more header, so any processing may stop. The ctx is always left in a form
681 * that can be handled by http_find_header2() to find next occurrence.
682 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]683int 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]684{
685 int cur_idx = ctx->idx;
686 char *sol = ctx->line;
687 struct hdr_idx_elem *hdr;
688 int delta, skip_comma;
689
690 if (!cur_idx)
691 return 0;
692
693 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]694 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]695 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]696 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]697 http_msg_move_end(msg, delta);
698 idx->used--;
699 hdr->len = 0; /* unused entry */
700 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]701 if (idx->tail == ctx->idx)
702 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]703 ctx->idx = ctx->prev; /* walk back to the end of previous header */
704 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
705 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]706 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]707 return ctx->idx;
708 }
709
710 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]711 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
712 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]713 */
714
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]715 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]716 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]717 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]718 NULL, 0);
719 hdr->len += delta;
720 http_msg_move_end(msg, delta);
721 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]722 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]723 return ctx->idx;
724}
725
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]726/* This function handles a server error at the stream interface level. The
727 * stream interface is assumed to be already in a closed state. An optional
728 * message is copied into the input buffer, and an HTTP status code stored.
729 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]730 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]731 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]732static void http_server_error(struct session *t, struct stream_interface *si,
733 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]734{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]735 channel_auto_read(si->ob);
736 channel_abort(si->ob);
737 channel_auto_close(si->ob);
738 channel_erase(si->ob);
739 channel_auto_close(si->ib);
740 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]741 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]742 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]743 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]744 }
745 if (!(t->flags & SN_ERR_MASK))
746 t->flags |= err;
747 if (!(t->flags & SN_FINST_MASK))
748 t->flags |= finst;
749}
750
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]751/* This function returns the appropriate error location for the given session
752 * and message.
753 */
754
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]755struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]756{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]757 if (s->be->errmsg[msgnum].str)
758 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]759 else if (s->fe->errmsg[msgnum].str)
760 return &s->fe->errmsg[msgnum];
761 else
762 return &http_err_chunks[msgnum];
763}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]764
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]765/*
766 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
767 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
768 */
769static http_meth_t find_http_meth(const char *str, const int len)
770{
771 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]772 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]773
774 m = ((unsigned)*str - 'A');
775
776 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]777 for (h = http_methods[m]; h->len > 0; h++) {
778 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]779 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]780 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]781 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]782 };
783 return HTTP_METH_OTHER;
784 }
785 return HTTP_METH_NONE;
786
787}
788
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]789/* Parse the URI from the given transaction (which is assumed to be in request
790 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
791 * It is returned otherwise.
792 */
793static char *
794http_get_path(struct http_txn *txn)
795{
796 char *ptr, *end;
797
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]798 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]799 end = ptr + txn->req.sl.rq.u_l;
800
801 if (ptr >= end)
802 return NULL;
803
804 /* RFC2616, par. 5.1.2 :
805 * Request-URI = "*" | absuri | abspath | authority
806 */
807
808 if (*ptr == '*')
809 return NULL;
810
811 if (isalpha((unsigned char)*ptr)) {
812 /* this is a scheme as described by RFC3986, par. 3.1 */
813 ptr++;
814 while (ptr < end &&
815 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
816 ptr++;
817 /* skip '://' */
818 if (ptr == end || *ptr++ != ':')
819 return NULL;
820 if (ptr == end || *ptr++ != '/')
821 return NULL;
822 if (ptr == end || *ptr++ != '/')
823 return NULL;
824 }
825 /* skip [user[:passwd]@]host[:[port]] */
826
827 while (ptr < end && *ptr != '/')
828 ptr++;
829
830 if (ptr == end)
831 return NULL;
832
833 /* OK, we got the '/' ! */
834 return ptr;
835}
836
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]837/* Returns a 302 for a redirectable request that reaches a server working in
838 * in redirect mode. This may only be called just after the stream interface
839 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
840 * follow normal proxy processing. NOTE: this function is designed to support
841 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]842 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]843void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]844{
845 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]846 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]847 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]848 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]849
850 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]851 trash.len = strlen(HTTP_302);
852 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]853
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]854 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]855
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]856 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]857 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]858 return;
859
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]860 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]861 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]862 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
863 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]864 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]865
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]866 /* 3: add the request URI. Since it was already forwarded, we need
867 * to temporarily rewind the buffer.
868 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]869 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]870 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]871
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]872 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]873 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]874
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]875 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]876
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]877 if (!path)
878 return;
879
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]880 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]881 return;
882
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]883 memcpy(trash.str + trash.len, path, len);
884 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]885
886 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]887 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
888 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]889 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]890 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
891 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]892 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]893
894 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]895 si_shutr(si);
896 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]897 si->err_type = SI_ET_NONE;
898 si->err_loc = NULL;
899 si->state = SI_ST_CLO;
900
901 /* send the message */
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]902 http_server_error(s, si, SN_ERR_LOCAL, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]903
904 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]905 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]906}
907
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]908/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]909 * that the server side is closed. Note that err_type is actually a
910 * bitmask, where almost only aborts may be cumulated with other
911 * values. We consider that aborted operations are more important
912 * than timeouts or errors due to the fact that nobody else in the
913 * logs might explain incomplete retries. All others should avoid
914 * being cumulated. It should normally not be possible to have multiple
915 * aborts at once, but just in case, the first one in sequence is reported.
916 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]917void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]918{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]919 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]920
921 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]922 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]923 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]924 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]925 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]926 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]927 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]928 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]929 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]930 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]931 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]932 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]933 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]934 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]935 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]936 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]937 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]938 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]939 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]940 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]941 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]942}
943
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]944extern const char sess_term_cond[8];
945extern const char sess_fin_state[8];
946extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]947struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]948struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]949struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]950
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]951/*
952 * Capture headers from message starting at <som> according to header list
953 * <cap_hdr>, and fill the <idx> structure appropriately.
954 */
955void capture_headers(char *som, struct hdr_idx *idx,
956 char **cap, struct cap_hdr *cap_hdr)
957{
958 char *eol, *sol, *col, *sov;
959 int cur_idx;
960 struct cap_hdr *h;
961 int len;
962
963 sol = som + hdr_idx_first_pos(idx);
964 cur_idx = hdr_idx_first_idx(idx);
965
966 while (cur_idx) {
967 eol = sol + idx->v[cur_idx].len;
968
969 col = sol;
970 while (col < eol && *col != ':')
971 col++;
972
973 sov = col + 1;
974 while (sov < eol && http_is_lws[(unsigned char)*sov])
975 sov++;
976
977 for (h = cap_hdr; h; h = h->next) {
978 if ((h->namelen == col - sol) &&
979 (strncasecmp(sol, h->name, h->namelen) == 0)) {
980 if (cap[h->index] == NULL)
981 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]982 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]983
984 if (cap[h->index] == NULL) {
985 Alert("HTTP capture : out of memory.\n");
986 continue;
987 }
988
989 len = eol - sov;
990 if (len > h->len)
991 len = h->len;
992
993 memcpy(cap[h->index], sov, len);
994 cap[h->index][len]=0;
995 }
996 }
997 sol = eol + idx->v[cur_idx].cr + 1;
998 cur_idx = idx->v[cur_idx].next;
999 }
1000}
1001
1002
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1003/* either we find an LF at <ptr> or we jump to <bad>.
1004 */
1005#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1006
1007/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1008 * otherwise to <http_msg_ood> with <state> set to <st>.
1009 */
1010#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1011 ptr++; \
1012 if (likely(ptr < end)) \
1013 goto good; \
1014 else { \
1015 state = (st); \
1016 goto http_msg_ood; \
1017 } \
1018 } while (0)
1019
1020
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1021/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1022 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1023 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1024 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1025 * will give undefined results.
1026 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1027 * and that msg->sol points to the beginning of the response.
1028 * If a complete line is found (which implies that at least one CR or LF is
1029 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1030 * returned indicating an incomplete line (which does not mean that parts have
1031 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1032 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1033 * upon next call.
1034 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1035 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1036 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1037 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1038 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1039 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1040const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1041 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1042 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1043{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1044 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1045
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1046 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1047 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1048 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1049 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1050 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1051
1052 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1053 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1054 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1055 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1056 state = HTTP_MSG_ERROR;
1057 break;
1058
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1059 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1060 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1061 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1062 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1063 goto http_msg_rpcode;
1064 }
1065 if (likely(HTTP_IS_SPHT(*ptr)))
1066 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1067 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1068 state = HTTP_MSG_ERROR;
1069 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1070
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1071 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1072 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1073 if (likely(!HTTP_IS_LWS(*ptr)))
1074 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1075
1076 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1077 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1078 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1079 }
1080
1081 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1082 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1083 http_msg_rsp_reason:
1084 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1085 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1086 msg->sl.st.r_l = 0;
1087 goto http_msg_rpline_eol;
1088
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1089 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1090 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1091 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1093 goto http_msg_rpreason;
1094 }
1095 if (likely(HTTP_IS_SPHT(*ptr)))
1096 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1097 /* so it's a CR/LF, so there is no reason phrase */
1098 goto http_msg_rsp_reason;
1099
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1100 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1101 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1102 if (likely(!HTTP_IS_CRLF(*ptr)))
1103 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1104 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1105 http_msg_rpline_eol:
1106 /* We have seen the end of line. Note that we do not
1107 * necessarily have the \n yet, but at least we know that we
1108 * have EITHER \r OR \n, otherwise the response would not be
1109 * complete. We can then record the response length and return
1110 * to the caller which will be able to register it.
1111 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1112 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1113 return ptr;
1114
1115#ifdef DEBUG_FULL
1116 default:
1117 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1118 exit(1);
1119#endif
1120 }
1121
1122 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1123 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1124 if (ret_state)
1125 *ret_state = state;
1126 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1127 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1128 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1129}
1130
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1131/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1132 * This function parses a request line between <ptr> and <end>, starting with
1133 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1134 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1135 * will give undefined results.
1136 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1137 * and that msg->sol points to the beginning of the request.
1138 * If a complete line is found (which implies that at least one CR or LF is
1139 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1140 * returned indicating an incomplete line (which does not mean that parts have
1141 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1142 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1143 * upon next call.
1144 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1145 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1146 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1147 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1148 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1149 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1150const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1151 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1152 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1153{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1154 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1155
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1157 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1158 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1159 if (likely(HTTP_IS_TOKEN(*ptr)))
1160 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1161
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1162 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1163 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1164 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1165 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1166
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1167 if (likely(HTTP_IS_CRLF(*ptr))) {
1168 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1169 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1170 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1171 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1172 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1173 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1174 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1175 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1176 msg->sl.rq.v_l = 0;
1177 goto http_msg_rqline_eol;
1178 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1179 state = HTTP_MSG_ERROR;
1180 break;
1181
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1183 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1185 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1186 goto http_msg_rquri;
1187 }
1188 if (likely(HTTP_IS_SPHT(*ptr)))
1189 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1190 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1191 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1192
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1193 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1194 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1195 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1196 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1197
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1198 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1199 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1200 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1201 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1202
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1203 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1204 /* non-ASCII chars are forbidden unless option
1205 * accept-invalid-http-request is enabled in the frontend.
1206 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1207 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1208 if (msg->err_pos < -1)
1209 goto invalid_char;
1210 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1211 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1212 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1213 }
1214
1215 if (likely(HTTP_IS_CRLF(*ptr))) {
1216 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1217 goto http_msg_req09_uri_e;
1218 }
1219
1220 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1221 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1222 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1223 state = HTTP_MSG_ERROR;
1224 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1225
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1227 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1228 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1229 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1230 goto http_msg_rqver;
1231 }
1232 if (likely(HTTP_IS_SPHT(*ptr)))
1233 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1234 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1235 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1236
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1237 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1238 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1239 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1240 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1241
1242 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1243 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1244 http_msg_rqline_eol:
1245 /* We have seen the end of line. Note that we do not
1246 * necessarily have the \n yet, but at least we know that we
1247 * have EITHER \r OR \n, otherwise the request would not be
1248 * complete. We can then record the request length and return
1249 * to the caller which will be able to register it.
1250 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1251 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1252 return ptr;
1253 }
1254
1255 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1256 state = HTTP_MSG_ERROR;
1257 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1258
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1259#ifdef DEBUG_FULL
1260 default:
1261 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1262 exit(1);
1263#endif
1264 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1265
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1266 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1267 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1268 if (ret_state)
1269 *ret_state = state;
1270 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1271 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1272 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1273}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1274
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1275/*
1276 * Returns the data from Authorization header. Function may be called more
1277 * than once so data is stored in txn->auth_data. When no header is found
1278 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1279 * searching again for something we are unable to find anyway.
1280 */
1281
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1282char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1283
1284int
1285get_http_auth(struct session *s)
1286{
1287
1288 struct http_txn *txn = &s->txn;
1289 struct chunk auth_method;
1290 struct hdr_ctx ctx;
1291 char *h, *p;
1292 int len;
1293
1294#ifdef DEBUG_AUTH
1295 printf("Auth for session %p: %d\n", s, txn->auth.method);
1296#endif
1297
1298 if (txn->auth.method == HTTP_AUTH_WRONG)
1299 return 0;
1300
1301 if (txn->auth.method)
1302 return 1;
1303
1304 txn->auth.method = HTTP_AUTH_WRONG;
1305
1306 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1307
1308 if (txn->flags & TX_USE_PX_CONN) {
1309 h = "Proxy-Authorization";
1310 len = strlen(h);
1311 } else {
1312 h = "Authorization";
1313 len = strlen(h);
1314 }
1315
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1316 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1317 return 0;
1318
1319 h = ctx.line + ctx.val;
1320
1321 p = memchr(h, ' ', ctx.vlen);
1322 if (!p || p == h)
1323 return 0;
1324
1325 chunk_initlen(&auth_method, h, 0, p-h);
1326 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1327
1328 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1329
1330 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1331 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1332
1333 if (len < 0)
1334 return 0;
1335
1336
1337 get_http_auth_buff[len] = '\0';
1338
1339 p = strchr(get_http_auth_buff, ':');
1340
1341 if (!p)
1342 return 0;
1343
1344 txn->auth.user = get_http_auth_buff;
1345 *p = '\0';
1346 txn->auth.pass = p+1;
1347
1348 txn->auth.method = HTTP_AUTH_BASIC;
1349 return 1;
1350 }
1351
1352 return 0;
1353}
1354
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1355
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356/*
1357 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1358 * depending on the initial msg->msg_state. The caller is responsible for
1359 * ensuring that the message does not wrap. The function can be preempted
1360 * everywhere when data are missing and recalled at the exact same location
1361 * with no information loss. The message may even be realigned between two
1362 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1363 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1364 * fields. Note that msg->sol will be initialized after completing the first
1365 * state, so that none of the msg pointers has to be initialized prior to the
1366 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1368void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1369{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1370 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1371 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1372 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1373
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1374 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1375 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1376 ptr = buf->p + msg->next;
1377 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1378
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1379 if (unlikely(ptr >= end))
1380 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1381
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1383 /*
1384 * First, states that are specific to the response only.
1385 * We check them first so that request and headers are
1386 * closer to each other (accessed more often).
1387 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1388 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1389 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1390 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1391 /* we have a start of message, but we have to check
1392 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1393 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1394 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1395 if (unlikely(ptr != buf->p)) {
1396 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1397 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1398 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1399 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1401 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1402 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1403 hdr_idx_init(idx);
1404 state = HTTP_MSG_RPVER;
1405 goto http_msg_rpver;
1406 }
1407
1408 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1409 goto http_msg_invalid;
1410
1411 if (unlikely(*ptr == '\n'))
1412 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1413 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1414 /* stop here */
1415
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1416 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1417 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1418 EXPECT_LF_HERE(ptr, http_msg_invalid);
1419 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1420 /* stop here */
1421
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1422 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1423 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1424 case HTTP_MSG_RPVER_SP:
1425 case HTTP_MSG_RPCODE:
1426 case HTTP_MSG_RPCODE_SP:
1427 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1428 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1429 state, ptr, end,
1430 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1431 if (unlikely(!ptr))
1432 return;
1433
1434 /* we have a full response and we know that we have either a CR
1435 * or an LF at <ptr>.
1436 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1438
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1439 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 if (likely(*ptr == '\r'))
1441 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1442 goto http_msg_rpline_end;
1443
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1444 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1445 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1446 /* msg->sol must point to the first of CR or LF. */
1447 EXPECT_LF_HERE(ptr, http_msg_invalid);
1448 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1449 /* stop here */
1450
1451 /*
1452 * Second, states that are specific to the request only
1453 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1455 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1457 /* we have a start of message, but we have to check
1458 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1459 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1460 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1461 if (likely(ptr != buf->p)) {
1462 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1463 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1464 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1465 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1466 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1467 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1468 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1469 state = HTTP_MSG_RQMETH;
1470 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1471 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1472
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1474 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 if (unlikely(*ptr == '\n'))
1477 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1478 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1479 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1480
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1481 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1482 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 EXPECT_LF_HERE(ptr, http_msg_invalid);
1484 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1485 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1488 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 case HTTP_MSG_RQMETH_SP:
1490 case HTTP_MSG_RQURI:
1491 case HTTP_MSG_RQURI_SP:
1492 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1493 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1494 state, ptr, end,
1495 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 if (unlikely(!ptr))
1497 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1498
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1499 /* we have a full request and we know that we have either a CR
1500 * or an LF at <ptr>.
1501 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1503
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1504 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1505 if (likely(*ptr == '\r'))
1506 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1508
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1510 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1511 /* check for HTTP/0.9 request : no version information available.
1512 * msg->sol must point to the first of CR or LF.
1513 */
1514 if (unlikely(msg->sl.rq.v_l == 0))
1515 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1516
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1517 EXPECT_LF_HERE(ptr, http_msg_invalid);
1518 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1519 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1520
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1521 /*
1522 * Common states below
1523 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1525 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1526 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 if (likely(!HTTP_IS_CRLF(*ptr))) {
1528 goto http_msg_hdr_name;
1529 }
1530
1531 if (likely(*ptr == '\r'))
1532 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1533 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1534
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1536 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537 /* assumes msg->sol points to the first char */
1538 if (likely(HTTP_IS_TOKEN(*ptr)))
1539 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1540
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1541 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1543
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1544 if (likely(msg->err_pos < -1) || *ptr == '\n')
1545 goto http_msg_invalid;
1546
1547 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1548 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1549
1550 /* and we still accept this non-token character */
1551 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1552
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1554 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1555 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 if (likely(HTTP_IS_SPHT(*ptr)))
1557 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1560 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1561
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 if (likely(!HTTP_IS_CRLF(*ptr))) {
1563 goto http_msg_hdr_val;
1564 }
1565
1566 if (likely(*ptr == '\r'))
1567 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1568 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1571 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1572 EXPECT_LF_HERE(ptr, http_msg_invalid);
1573 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1574
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1576 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1577 if (likely(HTTP_IS_SPHT(*ptr))) {
1578 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1579 for (; buf->p + msg->sov < ptr; msg->sov++)
1580 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 goto http_msg_hdr_l1_sp;
1582 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1583 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1584 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 goto http_msg_complete_header;
1586
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1587 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1588 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1589 /* assumes msg->sol points to the first char, and msg->sov
1590 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1591 */
1592 if (likely(!HTTP_IS_CRLF(*ptr)))
1593 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1594
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1595 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 /* Note: we could also copy eol into ->eoh so that we have the
1597 * real header end in case it ends with lots of LWS, but is this
1598 * really needed ?
1599 */
1600 if (likely(*ptr == '\r'))
1601 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1602 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1603
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1604 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1605 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1606 EXPECT_LF_HERE(ptr, http_msg_invalid);
1607 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1608
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1609 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1610 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1611 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1612 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1613 for (; buf->p + msg->eol < ptr; msg->eol++)
1614 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1615 goto http_msg_hdr_val;
1616 }
1617 http_msg_complete_header:
1618 /*
1619 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1620 * Assumes msg->sol points to the first char, msg->sov points
1621 * to the first character of the value and msg->eol to the
1622 * first CR or LF so we know how the line ends. We insert last
1623 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1624 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1625 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1626 idx, idx->tail) < 0))
1627 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1628
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1629 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1630 if (likely(!HTTP_IS_CRLF(*ptr))) {
1631 goto http_msg_hdr_name;
1632 }
1633
1634 if (likely(*ptr == '\r'))
1635 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1636 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1637
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1638 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1639 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 /* Assumes msg->sol points to the first of either CR or LF */
1641 EXPECT_LF_HERE(ptr, http_msg_invalid);
1642 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1643 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1644 msg->eoh = msg->sol;
1645 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1646 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1647 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1648
1649 case HTTP_MSG_ERROR:
1650 /* this may only happen if we call http_msg_analyser() twice with an error */
1651 break;
1652
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1653#ifdef DEBUG_FULL
1654 default:
1655 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1656 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1657#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1658 }
1659 http_msg_ood:
1660 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1661 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1662 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1664
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1665 http_msg_invalid:
1666 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1667 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1668 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1669 return;
1670}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1671
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1672/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1673 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1674 * nothing is done and 1 is returned.
1675 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1676static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1677{
1678 int delta;
1679 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1680 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1681
1682 if (msg->sl.rq.v_l != 0)
1683 return 1;
1684
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1685 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1686 delta = 0;
1687
1688 if (msg->sl.rq.u_l == 0) {
1689 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1690 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1691 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1692 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1693 }
1694 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1695 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1696 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1697 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1698 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1699 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1700 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1701 NULL, NULL);
1702 if (unlikely(!cur_end))
1703 return 0;
1704
1705 /* we have a full HTTP/1.0 request now and we know that
1706 * we have either a CR or an LF at <ptr>.
1707 */
1708 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1709 return 1;
1710}
1711
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1712/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1713 * and "keep-alive" values. If we already know that some headers may safely
1714 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1715 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1716 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1717 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1718 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1719 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1720 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1721 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1722 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1723void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1724{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1725 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1726 const char *hdr_val = "Connection";
1727 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1728
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1729 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1730 return;
1731
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1732 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1733 hdr_val = "Proxy-Connection";
1734 hdr_len = 16;
1735 }
1736
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1737 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1739 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1740 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1741 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1742 if (to_del & 2)
1743 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1744 else
1745 txn->flags |= TX_CON_KAL_SET;
1746 }
1747 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1748 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1749 if (to_del & 1)
1750 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1751 else
1752 txn->flags |= TX_CON_CLO_SET;
1753 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1754 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1755 txn->flags |= TX_HDR_CONN_UPG;
1756 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1757 }
1758
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1759 txn->flags |= TX_HDR_CONN_PRS;
1760 return;
1761}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1762
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1763/* Apply desired changes on the Connection: header. Values may be removed and/or
1764 * added depending on the <wanted> flags, which are exclusively composed of
1765 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1766 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1767 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1768void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1769{
1770 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1771 const char *hdr_val = "Connection";
1772 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1773
1774 ctx.idx = 0;
1775
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1776
1777 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1778 hdr_val = "Proxy-Connection";
1779 hdr_len = 16;
1780 }
1781
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1782 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1783 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1784 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1785 if (wanted & TX_CON_KAL_SET)
1786 txn->flags |= TX_CON_KAL_SET;
1787 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1788 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1789 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1790 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1791 if (wanted & TX_CON_CLO_SET)
1792 txn->flags |= TX_CON_CLO_SET;
1793 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1794 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1795 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1796 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1797
1798 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1799 return;
1800
1801 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1802 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1803 hdr_val = "Connection: close";
1804 hdr_len = 17;
1805 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1806 hdr_val = "Proxy-Connection: close";
1807 hdr_len = 23;
1808 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1809 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1810 }
1811
1812 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1813 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1814 hdr_val = "Connection: keep-alive";
1815 hdr_len = 22;
1816 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1817 hdr_val = "Proxy-Connection: keep-alive";
1818 hdr_len = 28;
1819 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1820 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1821 }
1822 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1823}
1824
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1825/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1827 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1828 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1829 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1830 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1831static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1832{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1833 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1834 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1835 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1836 const char *end = buf->data + buf->size;
1837 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1838 unsigned int chunk = 0;
1839
1840 /* The chunk size is in the following form, though we are only
1841 * interested in the size and CRLF :
1842 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1843 */
1844 while (1) {
1845 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1846 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1847 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1848 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1849 if (c < 0) /* not a hex digit anymore */
1850 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1851 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1852 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1853 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1854 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1855 chunk = (chunk << 4) + c;
1856 }
1857
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1859 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1860 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1861
1862 while (http_is_spht[(unsigned char)*ptr]) {
1863 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1865 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1866 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1867 }
1868
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1869 /* Up to there, we know that at least one byte is present at *ptr. Check
1870 * for the end of chunk size.
1871 */
1872 while (1) {
1873 if (likely(HTTP_IS_CRLF(*ptr))) {
1874 /* we now have a CR or an LF at ptr */
1875 if (likely(*ptr == '\r')) {
1876 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1877 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1878 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1879 return 0;
1880 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1881
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1882 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1883 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1885 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1886 /* done */
1887 break;
1888 }
1889 else if (*ptr == ';') {
1890 /* chunk extension, ends at next CRLF */
1891 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1892 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1893 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1894 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1895
1896 while (!HTTP_IS_CRLF(*ptr)) {
1897 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1899 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1900 return 0;
1901 }
1902 /* we have a CRLF now, loop above */
1903 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1904 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1905 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1906 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1907 }
1908
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1909 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1910 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1911 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1912 */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1913 if (unlikely(ptr < ptr_old))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1914 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1915 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1916 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1917 msg->chunk_len = chunk;
1918 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1919 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1920 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1921 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1922 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1923 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1924}
1925
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1926/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1927 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1928 * the trailers is found, it is automatically scheduled to be forwarded,
1929 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1930 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1931 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1932 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1933 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1934 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1935 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1936 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1937 * matches the length of trailers already parsed and not forwarded. It is also
1938 * important to note that this function is designed to be able to parse wrapped
1939 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1940 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1941static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1942{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1943 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1944
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1945 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1946 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1947 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1948 const char *ptr = b_ptr(buf, msg->next);
1949 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1950 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951
1952 /* scan current line and stop at LF or CRLF */
1953 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1954 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 return 0;
1956
1957 if (*ptr == '\n') {
1958 if (!p1)
1959 p1 = ptr;
1960 p2 = ptr;
1961 break;
1962 }
1963
1964 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1965 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1966 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1967 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1968 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1969 p1 = ptr;
1970 }
1971
1972 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1973 if (ptr >= buf->data + buf->size)
1974 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1975 }
1976
1977 /* after LF; point to beginning of next line */
1978 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1979 if (p2 >= buf->data + buf->size)
1980 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1981
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1982 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1983 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1984 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1985
1986 /* schedule this line for forwarding */
1987 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1988 if (msg->sov >= buf->size)
1989 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1990
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1991 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1992 /* LF/CRLF at beginning of line => end of trailers at p2.
1993 * Everything was scheduled for forwarding, there's nothing
1994 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1995 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1996 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1997 msg->msg_state = HTTP_MSG_DONE;
1998 return 1;
1999 }
2000 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2001 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2002 }
2003}
2004
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]2005/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2006 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2007 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2008 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2009 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2010 * not enough data are available, the function does not change anything and
2011 * returns zero. If a parse error is encountered, the function returns < 0 and
2012 * does not change anything. Note: this function is designed to parse wrapped
2013 * CRLF at the end of the buffer.
2014 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2015static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2016{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2017 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2018 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2019 int bytes;
2020
2021 /* NB: we'll check data availabilty at the end. It's not a
2022 * problem because whatever we match first will be checked
2023 * against the correct length.
2024 */
2025 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2026 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2027 if (*ptr == '\r') {
2028 bytes++;
2029 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2030 if (ptr >= buf->data + buf->size)
2031 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2032 }
2033
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2034 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2035 return 0;
2036
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2037 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2038 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2039 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2040 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2041
2042 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2043 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2044 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2045 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
2046 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2047 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2048 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2049 return 1;
2050}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2051
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2052
2053/*
2054 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2055 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2056int select_compression_request_header(struct session *s, struct buffer *req)
2057{
2058 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2059 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2060 struct hdr_ctx ctx;
2061 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2062 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2063
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2064 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2065 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2066 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2067 */
2068 ctx.idx = 0;
2069 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2070 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2071 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2072 (ctx.vlen < 31 ||
2073 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2074 ctx.line[ctx.val + 30] < '6' ||
2075 (ctx.line[ctx.val + 30] == '6' &&
2076 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2077 s->comp_algo = NULL;
2078 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2079 }
2080
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2081 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2082 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2083 ctx.idx = 0;
2084 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2085 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2086 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2087 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2088
2089 /* remove all occurrences of the header when "compression offload" is set */
2090
2091 if ((s->be->comp && s->be->comp->offload) ||
2092 (s->fe->comp && s->fe->comp->offload)) {
2093 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2094 ctx.idx = 0;
2095 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2096 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2097 }
2098 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2099 return 1;
2100 }
2101 }
2102 }
2103 }
2104
2105 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2106 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2107 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2108 if (comp_algo->add_data == identity_add_data) {
2109 s->comp_algo = comp_algo;
2110 return 1;
2111 }
2112 }
2113 }
2114
2115 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2116 return 0;
2117}
2118
2119/*
2120 * Selects a comression algorithm depending of the server response.
2121 */
2122int select_compression_response_header(struct session *s, struct buffer *res)
2123{
2124 struct http_txn *txn = &s->txn;
2125 struct http_msg *msg = &txn->rsp;
2126 struct hdr_ctx ctx;
2127 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2128
2129 /* no common compression algorithm was found in request header */
2130 if (s->comp_algo == NULL)
2131 goto fail;
2132
2133 /* HTTP < 1.1 should not be compressed */
2134 if (!(msg->flags & HTTP_MSGF_VER_11))
2135 goto fail;
2136
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2137 /* 200 only */
2138 if (txn->status != 200)
2139 goto fail;
2140
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2141 /* Content-Length is null */
2142 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2143 goto fail;
2144
Willy Tarreau667c2a32013-04-09 08:13:58 +0200[diff] [blame]2145 /* TEMPORARY WORKAROUND: do not compress if response is chunked !!!!!! */
2146 if (msg->flags & HTTP_MSGF_TE_CHNK)
2147 goto fail;
2148
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2149 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2150 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2151 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2152 goto fail;
2153
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2154 /* no compression when Cache-Control: no-transform is present in the message */
2155 ctx.idx = 0;
2156 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2157 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2158 goto fail;
2159 }
2160
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2161 comp_type = NULL;
2162
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2163 /* we don't want to compress multipart content-types, nor content-types that are
2164 * not listed in the "compression type" directive if any. If no content-type was
2165 * found but configuration requires one, we don't compress either. Backend has
2166 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2167 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2168 ctx.idx = 0;
2169 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2170 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2171 goto fail;
2172
2173 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2174 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2175 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2176 if (ctx.vlen >= comp_type->name_len &&
2177 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2178 /* this Content-Type should be compressed */
2179 break;
2180 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2181 /* this Content-Type should not be compressed */
2182 if (comp_type == NULL)
2183 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2184 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2185 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2186 else { /* no content-type header */
2187 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2188 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2189 }
2190
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2191 /* limit compression rate */
2192 if (global.comp_rate_lim > 0)
2193 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2194 goto fail;
2195
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2196 /* limit cpu usage */
2197 if (idle_pct < compress_min_idle)
2198 goto fail;
2199
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2200 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2201 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2202 goto fail;
2203
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2204 s->flags |= SN_COMP_READY;
2205
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2206 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2207 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2208 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2209 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2210
2211 /* add Transfer-Encoding header */
2212 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2213 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2214
2215 /*
2216 * Add Content-Encoding header when it's not identity encoding.
2217 * RFC 2616 : Identity encoding: This content-coding is used only in the
2218 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2219 * header.
2220 */
2221 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2222 trash.len = 18;
2223 memcpy(trash.str, "Content-Encoding: ", trash.len);
2224 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2225 trash.len += s->comp_algo->name_len;
2226 trash.str[trash.len] = '\0';
2227 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2228 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2229 return 1;
2230
2231fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2232 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2233 return 0;
2234}
2235
2236
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2237/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2238 * processing can continue on next analysers, or zero if it either needs more
2239 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2240 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2241 * when it has nothing left to do, and may remove any analyser when it wants to
2242 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2243 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2244int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2245{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2246 /*
2247 * We will parse the partial (or complete) lines.
2248 * We will check the request syntax, and also join multi-line
2249 * headers. An index of all the lines will be elaborated while
2250 * parsing.
2251 *
2252 * For the parsing, we use a 28 states FSM.
2253 *
2254 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2255 * req->buf->p = beginning of request
2256 * req->buf->p + msg->eoh = end of processed headers / start of current one
2257 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2258 * msg->eol = end of current header or line (LF or CRLF)
2259 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2260 *
2261 * At end of parsing, we may perform a capture of the error (if any), and
2262 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2263 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2264 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2266
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2268 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2269 struct http_txn *txn = &s->txn;
2270 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2271 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2272
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2273 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2274 now_ms, __FUNCTION__,
2275 s,
2276 req,
2277 req->rex, req->wex,
2278 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2279 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2280 req->analysers);
2281
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2282 /* we're speaking HTTP here, so let's speak HTTP to the client */
2283 s->srv_error = http_return_srv_error;
2284
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2285 /* There's a protected area at the end of the buffer for rewriting
2286 * purposes. We don't want to start to parse the request if the
2287 * protected area is affected, because we may have to move processed
2288 * data later, which is much more complicated.
2289 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2290 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2291 if (txn->flags & TX_NOT_FIRST) {
2292 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2293 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2294 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2295 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2296 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2297 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2298 return 0;
2299 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2300 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2301 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2302 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2303 }
2304
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2305 /* Note that we have the same problem with the response ; we
2306 * may want to send a redirect, error or anything which requires
2307 * some spare space. So we'll ensure that we have at least
2308 * maxrewrite bytes available in the response buffer before
2309 * processing that one. This will only affect pipelined
2310 * keep-alive requests.
2311 */
2312 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2313 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2314 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2315 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2316 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2317 if (s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2318 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2319 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2320 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2321 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2322 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2323 return 0;
2324 }
2325 }
2326
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2327 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2328 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2329 }
2330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 /* 1: we might have to print this header in debug mode */
2332 if (unlikely((global.mode & MODE_DEBUG) &&
2333 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2334 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2335 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2336
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2337 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2338 /* this is a bit complex : in case of error on the request line,
2339 * we know that rq.l is still zero, so we display only the part
2340 * up to the end of the line (truncated by debug_hdr).
2341 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2342 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2343 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2345 sol += hdr_idx_first_pos(&txn->hdr_idx);
2346 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 while (cur_idx) {
2349 eol = sol + txn->hdr_idx.v[cur_idx].len;
2350 debug_hdr("clihdr", s, sol, eol);
2351 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2352 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2353 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2354 }
2355
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2356
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2357 /*
2358 * Now we quickly check if we have found a full valid request.
2359 * If not so, we check the FD and buffer states before leaving.
2360 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2361 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2362 * requests are checked first. When waiting for a second request
2363 * on a keep-alive session, if we encounter and error, close, t/o,
2364 * we note the error in the session flags but don't set any state.
2365 * Since the error will be noted there, it will not be counted by
2366 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2367 * Last, we may increase some tracked counters' http request errors on
2368 * the cases that are deliberately the client's fault. For instance,
2369 * a timeout or connection reset is not counted as an error. However
2370 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2371 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2372
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2373 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2374 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2375 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2376 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2377 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2378 session_inc_http_req_ctr(s);
2379 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2380 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2381 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2382 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2383
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2384 /* 1: Since we are in header mode, if there's no space
2385 * left for headers, we won't be able to free more
2386 * later, so the session will never terminate. We
2387 * must terminate it now.
2388 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2389 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2390 /* FIXME: check if URI is set and return Status
2391 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2392 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2393 session_inc_http_req_ctr(s);
2394 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2395 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2396 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2397 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2398 goto return_bad_req;
2399 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2400
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2401 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2402 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2403 if (!(s->flags & SN_ERR_MASK))
2404 s->flags |= SN_ERR_CLICL;
2405
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2406 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2407 goto failed_keep_alive;
2408
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2409 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2410 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2411 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2412 session_inc_http_err_ctr(s);
2413 }
2414
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2415 txn->status = 400;
2416 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2417 msg->msg_state = HTTP_MSG_ERROR;
2418 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2419
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2420 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2421 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2422 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2423 if (s->listener->counters)
2424 s->listener->counters->failed_req++;
2425
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2426 if (!(s->flags & SN_FINST_MASK))
2427 s->flags |= SN_FINST_R;
2428 return 0;
2429 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2430
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2431 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2432 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2433 if (!(s->flags & SN_ERR_MASK))
2434 s->flags |= SN_ERR_CLITO;
2435
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2436 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2437 goto failed_keep_alive;
2438
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2439 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2440 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2441 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2442 session_inc_http_err_ctr(s);
2443 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2444 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2445 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2446 msg->msg_state = HTTP_MSG_ERROR;
2447 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2448
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2449 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2450 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2451 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2452 if (s->listener->counters)
2453 s->listener->counters->failed_req++;
2454
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2455 if (!(s->flags & SN_FINST_MASK))
2456 s->flags |= SN_FINST_R;
2457 return 0;
2458 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2459
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2460 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2461 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2462 if (!(s->flags & SN_ERR_MASK))
2463 s->flags |= SN_ERR_CLICL;
2464
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2465 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2466 goto failed_keep_alive;
2467
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2468 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2469 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2470 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2471 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2472 msg->msg_state = HTTP_MSG_ERROR;
2473 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2474
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2475 session_inc_http_err_ctr(s);
2476 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2477 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2478 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2479 if (s->listener->counters)
2480 s->listener->counters->failed_req++;
2481
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2482 if (!(s->flags & SN_FINST_MASK))
2483 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2484 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2485 }
2486
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2487 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2488 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2489 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2490#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2491 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2492 /* We need more data, we have to re-enable quick-ack in case we
2493 * previously disabled it, otherwise we might cause the client
2494 * to delay next data.
2495 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2496 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2497 }
2498#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2499
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2500 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2501 /* If the client starts to talk, let's fall back to
2502 * request timeout processing.
2503 */
2504 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2505 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2506 }
2507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2508 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2509 if (!tick_isset(req->analyse_exp)) {
2510 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2511 (txn->flags & TX_WAIT_NEXT_RQ) &&
2512 tick_isset(s->be->timeout.httpka))
2513 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2514 else
2515 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2516 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2517
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2518 /* we're not ready yet */
2519 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2520
2521 failed_keep_alive:
2522 /* Here we process low-level errors for keep-alive requests. In
2523 * short, if the request is not the first one and it experiences
2524 * a timeout, read error or shutdown, we just silently close so
2525 * that the client can try again.
2526 */
2527 txn->status = 0;
2528 msg->msg_state = HTTP_MSG_RQBEFORE;
2529 req->analysers = 0;
2530 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame^]2531 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2532 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2533 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2534 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2536
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2537 /* OK now we have a complete HTTP request with indexed headers. Let's
2538 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2539 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2540 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2541 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2542 * byte after the last LF. msg->sov points to the first byte of data.
2543 * msg->eol cannot be trusted because it may have been left uninitialized
2544 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2545 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2546
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2547 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2548 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2549
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2550 if (txn->flags & TX_WAIT_NEXT_RQ) {
2551 /* kill the pending keep-alive timeout */
2552 txn->flags &= ~TX_WAIT_NEXT_RQ;
2553 req->analyse_exp = TICK_ETERNITY;
2554 }
2555
2556
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2557 /* Maybe we found in invalid header name while we were configured not
2558 * to block on that, so we have to capture it now.
2559 */
2560 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2561 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2563 /*
2564 * 1: identify the method
2565 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2566 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2567
2568 /* we can make use of server redirect on GET and HEAD */
2569 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2570 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2571
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2572 /*
2573 * 2: check if the URI matches the monitor_uri.
2574 * We have to do this for every request which gets in, because
2575 * the monitor-uri is defined by the frontend.
2576 */
2577 if (unlikely((s->fe->monitor_uri_len != 0) &&
2578 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2579 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2580 s->fe->monitor_uri,
2581 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2582 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2583 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2584 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2585 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2586
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2587 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2588 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2589
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2590 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2591 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2592 int ret = acl_exec_cond(cond, s->fe, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2593
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2594 ret = acl_pass(ret);
2595 if (cond->pol == ACL_COND_UNLESS)
2596 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2597
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2598 if (ret) {
2599 /* we fail this request, let's return 503 service unavail */
2600 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2601 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2602 if (!(s->flags & SN_ERR_MASK))
2603 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2604 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2605 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2606 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2607
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2608 /* nothing to fail, let's reply normaly */
2609 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2610 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2611 if (!(s->flags & SN_ERR_MASK))
2612 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2613 goto return_prx_cond;
2614 }
2615
2616 /*
2617 * 3: Maybe we have to copy the original REQURI for the logs ?
2618 * Note: we cannot log anymore if the request has been
2619 * classified as invalid.
2620 */
2621 if (unlikely(s->logs.logwait & LW_REQ)) {
2622 /* we have a complete HTTP request that we must log */
2623 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2624 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2625
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2626 if (urilen >= REQURI_LEN)
2627 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2628 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2629 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2630
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2631 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2632 s->do_log(s);
2633 } else {
2634 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2635 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2636 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2637
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2638 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
2639 s->unique_id = pool_alloc2(pool2_uniqueid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2640
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2641 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2642 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2643 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2644
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2645 /* ... and check if the request is HTTP/1.1 or above */
2646 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2647 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2648 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2649 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2650 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2651
2652 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2653 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]2654
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2655 /* if the frontend has "option http-use-proxy-header", we'll check if
2656 * we have what looks like a proxied connection instead of a connection,
2657 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2658 * Note that this is *not* RFC-compliant, however browsers and proxies
2659 * happen to do that despite being non-standard :-(
2660 * We consider that a request not beginning with either '/' or '*' is
2661 * a proxied connection, which covers both "scheme://location" and
2662 * CONNECT ip:port.
2663 */
2664 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2665 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2666 txn->flags |= TX_USE_PX_CONN;
2667
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2668 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2669 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2670
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2671 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2672 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2673 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2674 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2675
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2676 /* 6: determine the transfer-length.
2677 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2678 * the presence of a message-body in a REQUEST and its transfer length
2679 * must be determined that way (in order of precedence) :
2680 * 1. The presence of a message-body in a request is signaled by the
2681 * inclusion of a Content-Length or Transfer-Encoding header field
2682 * in the request's header fields. When a request message contains
2683 * both a message-body of non-zero length and a method that does
2684 * not define any semantics for that request message-body, then an
2685 * origin server SHOULD either ignore the message-body or respond
2686 * with an appropriate error message (e.g., 413). A proxy or
2687 * gateway, when presented the same request, SHOULD either forward
2688 * the request inbound with the message- body or ignore the
2689 * message-body when determining a response.
2690 *
2691 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2692 * and the "chunked" transfer-coding (Section 6.2) is used, the
2693 * transfer-length is defined by the use of this transfer-coding.
2694 * If a Transfer-Encoding header field is present and the "chunked"
2695 * transfer-coding is not present, the transfer-length is defined
2696 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2697 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2698 * 3. If a Content-Length header field is present, its decimal value in
2699 * OCTETs represents both the entity-length and the transfer-length.
2700 * If a message is received with both a Transfer-Encoding header
2701 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2702 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2703 * 4. By the server closing the connection. (Closing the connection
2704 * cannot be used to indicate the end of a request body, since that
2705 * would leave no possibility for the server to send back a response.)
2706 *
2707 * Whenever a transfer-coding is applied to a message-body, the set of
2708 * transfer-codings MUST include "chunked", unless the message indicates
2709 * it is terminated by closing the connection. When the "chunked"
2710 * transfer-coding is used, it MUST be the last transfer-coding applied
2711 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2712 */
2713
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2714 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2715 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2716 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2717 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2718 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2719 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2720 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2721 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2722 /* bad transfer-encoding (chunked followed by something else) */
2723 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2724 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2725 break;
2726 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2727 }
2728
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2729 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2730 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2731 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2732 signed long long cl;
2733
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2734 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2735 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2736 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2737 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2738
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2739 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2740 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2741 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2742 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2743
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2744 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2745 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2746 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2747 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2748
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2749 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2750 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2751 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2752 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2753
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2754 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2755 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2756 }
2757
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2758 /* bodyless requests have a known length */
2759 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2760 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2761
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2762 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2763 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2764 req->analyse_exp = TICK_ETERNITY;
2765 return 1;
2766
2767 return_bad_req:
2768 /* We centralize bad requests processing here */
2769 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2770 /* we detected a parsing error. We want to archive this request
2771 * in the dedicated proxy area for later troubleshooting.
2772 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2773 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]2774 }
2775
2776 txn->req.msg_state = HTTP_MSG_ERROR;
2777 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2778 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2779
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2780 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2781 if (s->listener->counters)
2782 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2783
2784 return_prx_cond:
2785 if (!(s->flags & SN_ERR_MASK))
2786 s->flags |= SN_ERR_PRXCOND;
2787 if (!(s->flags & SN_FINST_MASK))
2788 s->flags |= SN_FINST_R;
2789
2790 req->analysers = 0;
2791 req->analyse_exp = TICK_ETERNITY;
2792 return 0;
2793}
2794
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2795/* We reached the stats page through a POST request.
2796 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2797 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2798 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2799int http_process_req_stat_post(struct stream_interface *si, struct http_txn *txn, struct channel *req)
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2800{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2801 struct proxy *px = NULL;
2802 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2803
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2804 char key[LINESIZE];
2805 int action = ST_ADM_ACTION_NONE;
2806 int reprocess = 0;
2807
2808 int total_servers = 0;
2809 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2810
2811 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2812 char *st_cur_param = NULL;
2813 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2814
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2815 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2816 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2817
2818 cur_param = next_param = end_params;
2819
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2820 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2821 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2822 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2823 return 1;
2824 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2825 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2826 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2827 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2828 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2829 }
2830
2831 *end_params = '\0';
2832
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2833 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2834
2835 /*
2836 * Parse the parameters in reverse order to only store the last value.
2837 * From the html form, the backend and the action are at the end.
2838 */
2839 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2840 char *value;
2841 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2842
2843 cur_param--;
2844 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2845 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2846 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2847 poffset = (cur_param != first_param ? 1 : 0);
2848 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2849 if ((plen > 0) && (plen <= sizeof(key))) {
2850 strncpy(key, cur_param + poffset, plen);
2851 key[plen - 1] = '\0';
2852 } else {
2853 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2854 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2855 }
2856
2857 /* Parse the value */
2858 value = key;
2859 while (*value != '\0' && *value != '=') {
2860 value++;
2861 }
2862 if (*value == '=') {
2863 /* Ok, a value is found, we can mark the end of the key */
2864 *value++ = '\0';
2865 }
2866
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2867 if (!url_decode(key) || !url_decode(value))
2868 break;
2869
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2870 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2871 if (!px && (strcmp(key, "b") == 0)) {
2872 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2873 /* the backend name is unknown or ambiguous (duplicate names) */
2874 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2875 goto out;
2876 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2877 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2878 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2879 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2880 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2881 }
2882 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2883 action = ST_ADM_ACTION_ENABLE;
2884 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2885 else if (strcmp(value, "stop") == 0) {
2886 action = ST_ADM_ACTION_STOP;
2887 }
2888 else if (strcmp(value, "start") == 0) {
2889 action = ST_ADM_ACTION_START;
2890 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2891 else if (strcmp(value, "shutdown") == 0) {
2892 action = ST_ADM_ACTION_SHUTDOWN;
2893 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2894 else {
2895 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2896 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2897 }
2898 }
2899 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2900 if (!(px && action)) {
2901 /*
2902 * Indicates that we'll need to reprocess the parameters
2903 * as soon as backend and action are known
2904 */
2905 if (!reprocess) {
2906 st_cur_param = cur_param;
2907 st_next_param = next_param;
2908 }
2909 reprocess = 1;
2910 }
2911 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2912 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2913 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2914 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2915 /* Not already in maintenance, we can change the server state */
2916 sv->state |= SRV_MAINTAIN;
2917 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2918 altered_servers++;
2919 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2920 }
2921 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2922 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2923 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2924 /* Already in maintenance, we can change the server state */
2925 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2926 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2927 altered_servers++;
2928 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2929 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2930 break;
2931 case ST_ADM_ACTION_STOP:
2932 case ST_ADM_ACTION_START:
2933 if (action == ST_ADM_ACTION_START)
2934 sv->uweight = sv->iweight;
2935 else
2936 sv->uweight = 0;
2937
2938 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2939 /* we must take care of not pushing the server to full throttle during slow starts */
2940 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2941 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2942 else
2943 sv->eweight = BE_WEIGHT_SCALE;
2944 sv->eweight *= sv->uweight;
2945 } else {
2946 sv->eweight = sv->uweight;
2947 }
2948
2949 /* static LB algorithms are a bit harder to update */
2950 if (px->lbprm.update_server_eweight)
2951 px->lbprm.update_server_eweight(sv);
2952 else if (sv->eweight) {
2953 if (px->lbprm.set_server_status_up)
2954 px->lbprm.set_server_status_up(sv);
2955 }
2956 else {
2957 if (px->lbprm.set_server_status_down)
2958 px->lbprm.set_server_status_down(sv);
2959 }
2960 altered_servers++;
2961 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2962 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2963 case ST_ADM_ACTION_SHUTDOWN:
2964 if (px->state != PR_STSTOPPED) {
2965 struct session *sess, *sess_bck;
2966
2967 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2968 if (sess->srv_conn == sv)
2969 session_shutdown(sess, SN_ERR_KILLED);
2970
2971 altered_servers++;
2972 total_servers++;
2973 }
2974 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2975 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2976 } else {
2977 /* the server name is unknown or ambiguous (duplicate names) */
2978 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2979 }
2980 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2981 if (reprocess && px && action) {
2982 /* Now, we know the backend and the action chosen by the user.
2983 * We can safely restart from the first server parameter
2984 * to reprocess them
2985 */
2986 cur_param = st_cur_param;
2987 next_param = st_next_param;
2988 reprocess = 0;
2989 goto reprocess_servers;
2990 }
2991
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2992 next_param = cur_param;
2993 }
2994 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2995
2996 if (total_servers == 0) {
2997 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2998 }
2999 else if (altered_servers == 0) {
3000 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
3001 }
3002 else if (altered_servers == total_servers) {
3003 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
3004 }
3005 else {
3006 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
3007 }
3008 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3009 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3010}
3011
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3012/* This function checks whether we need to enable a POST analyser to parse a
3013 * stats request, and also registers the stats I/O handler. It returns zero
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3014 * if it needs to come back again, otherwise non-zero if it finishes. In the
3015 * latter case, it also clears the request analysers.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3016 */
3017int http_handle_stats(struct session *s, struct channel *req)
3018{
3019 struct stats_admin_rule *stats_admin_rule;
3020 struct stream_interface *si = s->rep->prod;
3021 struct http_txn *txn = &s->txn;
3022 struct http_msg *msg = &txn->req;
3023 struct uri_auth *uri = s->be->uri_auth;
3024
3025 /* now check whether we have some admin rules for this request */
3026 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3027 int ret = 1;
3028
3029 if (stats_admin_rule->cond) {
3030 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3031 ret = acl_pass(ret);
3032 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3033 ret = !ret;
3034 }
3035
3036 if (ret) {
3037 /* no rule, or the rule matches */
3038 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
3039 break;
3040 }
3041 }
3042
3043 /* Was the status page requested with a POST ? */
3044 if (unlikely(txn->meth == HTTP_METH_POST)) {
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3045 char scope_txt[STAT_SCOPE_TXT_MAXLEN + sizeof STAT_SCOPE_PATTERN];
3046
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3047 if (si->applet.ctx.stats.flags & STAT_ADMIN) {
3048 if (msg->msg_state < HTTP_MSG_100_SENT) {
3049 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3050 * send an HTTP/1.1 100 Continue intermediate response.
3051 */
3052 if (msg->flags & HTTP_MSGF_VER_11) {
3053 struct hdr_ctx ctx;
3054 ctx.idx = 0;
3055 /* Expect is allowed in 1.1, look for it */
3056 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
3057 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
3058 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
3059 }
3060 }
3061 msg->msg_state = HTTP_MSG_100_SENT;
3062 s->logs.tv_request = now; /* update the request timer to reflect full request */
3063 }
3064 if (!http_process_req_stat_post(si, txn, req))
3065 return 0; /* we need more data */
3066 }
3067 else
3068 si->applet.ctx.stats.st_code = STAT_STATUS_DENY;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3069 /* scope_txt = search pattern + search query, si->applet.ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
3070 scope_txt[0] = 0;
3071 if (si->applet.ctx.stats.scope_len) {
3072 strcpy(scope_txt, STAT_SCOPE_PATTERN);
3073 memcpy(scope_txt + strlen(STAT_SCOPE_PATTERN), bo_ptr(req->buf) + si->applet.ctx.stats.scope_str, si->applet.ctx.stats.scope_len);
3074 scope_txt[strlen(STAT_SCOPE_PATTERN) + si->applet.ctx.stats.scope_len] = 0;
3075 }
3076
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3077
3078 /* We don't want to land on the posted stats page because a refresh will
3079 * repost the data. We don't want this to happen on accident so we redirect
3080 * the browse to the stats page with a GET.
3081 */
3082 chunk_printf(&trash,
Yves Lafon4e8ec502013-03-11 11:06:05 -0400[diff] [blame]3083 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3084 "Cache-Control: no-cache\r\n"
3085 "Content-Type: text/plain\r\n"
3086 "Connection: close\r\n"
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3087 "Location: %s;st=%s%s%s%s\r\n"
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3088 "\r\n",
3089 uri->uri_prefix,
3090 ((si->applet.ctx.stats.st_code > STAT_STATUS_INIT) &&
3091 (si->applet.ctx.stats.st_code < STAT_STATUS_SIZE) &&
3092 stat_status_codes[si->applet.ctx.stats.st_code]) ?
3093 stat_status_codes[si->applet.ctx.stats.st_code] :
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3094 stat_status_codes[STAT_STATUS_UNKN],
3095 (si->applet.ctx.stats.flags & STAT_HIDE_DOWN) ? ";up" : "",
3096 (si->applet.ctx.stats.flags & STAT_NO_REFRESH) ? ";norefresh" : "",
3097 scope_txt);
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3098
3099 s->txn.status = 303;
3100 s->logs.tv_request = now;
3101 stream_int_retnclose(req->prod, &trash);
3102 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
3103
3104 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3105 s->fe->fe_counters.intercepted_req++;
3106
3107 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3108 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3109 if (!(s->flags & SN_FINST_MASK))
3110 s->flags |= SN_FINST_R;
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3111 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3112 return 1;
3113 }
3114
3115 /* OK, let's go on now */
3116
3117 chunk_printf(&trash,
3118 "HTTP/1.0 200 OK\r\n"
3119 "Cache-Control: no-cache\r\n"
3120 "Connection: close\r\n"
3121 "Content-Type: %s\r\n",
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]3122 (si->applet.ctx.stats.flags & STAT_FMT_HTML) ? "text/html" : "text/plain");
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3123
3124 if (uri->refresh > 0 && !(si->applet.ctx.stats.flags & STAT_NO_REFRESH))
3125 chunk_appendf(&trash, "Refresh: %d\r\n",
3126 uri->refresh);
3127
3128 chunk_appendf(&trash, "\r\n");
3129
3130 s->txn.status = 200;
3131 s->logs.tv_request = now;
3132
3133 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3134 s->fe->fe_counters.intercepted_req++;
3135
3136 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3137 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3138 if (!(s->flags & SN_FINST_MASK))
3139 s->flags |= SN_FINST_R;
3140
3141 if (s->txn.meth == HTTP_METH_HEAD) {
3142 /* that's all we return in case of HEAD request, so let's immediately close. */
3143 stream_int_retnclose(req->prod, &trash);
3144 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3145 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3146 return 1;
3147 }
3148
3149 /* OK, push the response and hand over to the stats I/O handler */
3150 bi_putchk(s->rep, &trash);
3151
3152 s->task->nice = -32; /* small boost for HTTP statistics */
3153 stream_int_register_handler(s->rep->prod, &http_stats_applet);
3154 s->target = s->rep->prod->conn->target; // for logging only
3155 s->rep->prod->conn->xprt_ctx = s;
3156 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
3157 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3158 return 1;
3159}
3160
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3161/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3162 * transaction <txn>. Returns the first rule that prevents further processing
3163 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
3164 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
3165 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3166 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3167static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3168http_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]3169{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3170 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3171 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3172
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3173 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3174 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3175 continue;
3176
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3177 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3178 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3179 int ret;
3180
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3181 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]3182 ret = acl_pass(ret);
3183
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3184 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3185 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3186
3187 if (!ret) /* condition not matched */
3188 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3189 }
3190
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3191
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3192 switch (rule->action) {
3193 case HTTP_REQ_ACT_ALLOW:
3194 return NULL; /* "allow" rules are OK */
3195
3196 case HTTP_REQ_ACT_DENY:
3197 txn->flags |= TX_CLDENY;
3198 return rule;
3199
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3200 case HTTP_REQ_ACT_TARPIT:
3201 txn->flags |= TX_CLTARPIT;
3202 return rule;
3203
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3204 case HTTP_REQ_ACT_AUTH:
3205 return rule;
3206
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3207 case HTTP_REQ_ACT_REDIR:
3208 return rule;
3209
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3210 case HTTP_REQ_ACT_SET_NICE:
3211 s->task->nice = rule->arg.nice;
3212 break;
3213
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3214 case HTTP_REQ_ACT_SET_HDR:
3215 ctx.idx = 0;
3216 /* remove all occurrences of the header */
3217 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3218 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3219 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3220 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3221 /* now fall through to header addition */
3222
3223 case HTTP_REQ_ACT_ADD_HDR:
3224 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3225 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3226 trash.len = rule->arg.hdr_add.name_len;
3227 trash.str[trash.len++] = ':';
3228 trash.str[trash.len++] = ' ';
3229 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3230 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3231 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3232 }
3233 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3234
3235 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3236 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3237}
3238
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3239
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3240/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3241 * transaction <txn>. Returns the first rule that prevents further processing
3242 * of the response (deny, ...) or NULL if it executed all rules or stopped
3243 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3244 * rule.
3245 */
3246static struct http_res_rule *
3247http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3248{
3249 struct http_res_rule *rule;
3250 struct hdr_ctx ctx;
3251
3252 list_for_each_entry(rule, rules, list) {
3253 if (rule->action >= HTTP_RES_ACT_MAX)
3254 continue;
3255
3256 /* check optional condition */
3257 if (rule->cond) {
3258 int ret;
3259
3260 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3261 ret = acl_pass(ret);
3262
3263 if (rule->cond->pol == ACL_COND_UNLESS)
3264 ret = !ret;
3265
3266 if (!ret) /* condition not matched */
3267 continue;
3268 }
3269
3270
3271 switch (rule->action) {
3272 case HTTP_RES_ACT_ALLOW:
3273 return NULL; /* "allow" rules are OK */
3274
3275 case HTTP_RES_ACT_DENY:
3276 txn->flags |= TX_SVDENY;
3277 return rule;
3278
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3279 case HTTP_RES_ACT_SET_NICE:
3280 s->task->nice = rule->arg.nice;
3281 break;
3282
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3283 case HTTP_RES_ACT_SET_HDR:
3284 ctx.idx = 0;
3285 /* remove all occurrences of the header */
3286 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3287 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3288 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3289 }
3290 /* now fall through to header addition */
3291
3292 case HTTP_RES_ACT_ADD_HDR:
3293 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3294 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3295 trash.len = rule->arg.hdr_add.name_len;
3296 trash.str[trash.len++] = ':';
3297 trash.str[trash.len++] = ' ';
3298 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3299 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3300 break;
3301 }
3302 }
3303
3304 /* we reached the end of the rules, nothing to report */
3305 return NULL;
3306}
3307
3308
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3309/* Perform an HTTP redirect based on the information in <rule>. The function
3310 * returns non-zero on success, or zero in case of a, irrecoverable error such
3311 * as too large a request to build a valid response.
3312 */
3313static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3314{
3315 struct http_msg *msg = &txn->req;
3316 const char *msg_fmt;
3317
3318 /* build redirect message */
3319 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3320 case 308:
3321 msg_fmt = HTTP_308;
3322 break;
3323 case 307:
3324 msg_fmt = HTTP_307;
3325 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3326 case 303:
3327 msg_fmt = HTTP_303;
3328 break;
3329 case 301:
3330 msg_fmt = HTTP_301;
3331 break;
3332 case 302:
3333 default:
3334 msg_fmt = HTTP_302;
3335 break;
3336 }
3337
3338 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3339 return 0;
3340
3341 switch(rule->type) {
3342 case REDIRECT_TYPE_SCHEME: {
3343 const char *path;
3344 const char *host;
3345 struct hdr_ctx ctx;
3346 int pathlen;
3347 int hostlen;
3348
3349 host = "";
3350 hostlen = 0;
3351 ctx.idx = 0;
3352 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3353 host = ctx.line + ctx.val;
3354 hostlen = ctx.vlen;
3355 }
3356
3357 path = http_get_path(txn);
3358 /* build message using path */
3359 if (path) {
3360 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3361 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3362 int qs = 0;
3363 while (qs < pathlen) {
3364 if (path[qs] == '?') {
3365 pathlen = qs;
3366 break;
3367 }
3368 qs++;
3369 }
3370 }
3371 } else {
3372 path = "/";
3373 pathlen = 1;
3374 }
3375
3376 /* check if we can add scheme + "://" + host + path */
3377 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3378 return 0;
3379
3380 /* add scheme */
3381 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3382 trash.len += rule->rdr_len;
3383
3384 /* add "://" */
3385 memcpy(trash.str + trash.len, "://", 3);
3386 trash.len += 3;
3387
3388 /* add host */
3389 memcpy(trash.str + trash.len, host, hostlen);
3390 trash.len += hostlen;
3391
3392 /* add path */
3393 memcpy(trash.str + trash.len, path, pathlen);
3394 trash.len += pathlen;
3395
3396 /* append a slash at the end of the location is needed and missing */
3397 if (trash.len && trash.str[trash.len - 1] != '/' &&
3398 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3399 if (trash.len > trash.size - 5)
3400 return 0;
3401 trash.str[trash.len] = '/';
3402 trash.len++;
3403 }
3404
3405 break;
3406 }
3407 case REDIRECT_TYPE_PREFIX: {
3408 const char *path;
3409 int pathlen;
3410
3411 path = http_get_path(txn);
3412 /* build message using path */
3413 if (path) {
3414 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3415 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3416 int qs = 0;
3417 while (qs < pathlen) {
3418 if (path[qs] == '?') {
3419 pathlen = qs;
3420 break;
3421 }
3422 qs++;
3423 }
3424 }
3425 } else {
3426 path = "/";
3427 pathlen = 1;
3428 }
3429
3430 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3431 return 0;
3432
3433 /* add prefix. Note that if prefix == "/", we don't want to
3434 * add anything, otherwise it makes it hard for the user to
3435 * configure a self-redirection.
3436 */
3437 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3438 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3439 trash.len += rule->rdr_len;
3440 }
3441
3442 /* add path */
3443 memcpy(trash.str + trash.len, path, pathlen);
3444 trash.len += pathlen;
3445
3446 /* append a slash at the end of the location is needed and missing */
3447 if (trash.len && trash.str[trash.len - 1] != '/' &&
3448 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3449 if (trash.len > trash.size - 5)
3450 return 0;
3451 trash.str[trash.len] = '/';
3452 trash.len++;
3453 }
3454
3455 break;
3456 }
3457 case REDIRECT_TYPE_LOCATION:
3458 default:
3459 if (trash.len + rule->rdr_len > trash.size - 4)
3460 return 0;
3461
3462 /* add location */
3463 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3464 trash.len += rule->rdr_len;
3465 break;
3466 }
3467
3468 if (rule->cookie_len) {
3469 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3470 trash.len += 14;
3471 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3472 trash.len += rule->cookie_len;
3473 memcpy(trash.str + trash.len, "\r\n", 2);
3474 trash.len += 2;
3475 }
3476
3477 /* add end of headers and the keep-alive/close status.
3478 * We may choose to set keep-alive if the Location begins
3479 * with a slash, because the client will come back to the
3480 * same server.
3481 */
3482 txn->status = rule->code;
3483 /* let's log the request time */
3484 s->logs.tv_request = now;
3485
3486 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
3487 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3488 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3489 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3490 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3491 /* keep-alive possible */
3492 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3493 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3494 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3495 trash.len += 30;
3496 } else {
3497 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3498 trash.len += 24;
3499 }
3500 }
3501 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3502 trash.len += 4;
3503 bo_inject(txn->rsp.chn, trash.str, trash.len);
3504 /* "eat" the request */
3505 bi_fast_delete(txn->req.chn->buf, msg->sov);
3506 msg->sov = 0;
3507 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3508 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3509 txn->req.msg_state = HTTP_MSG_CLOSED;
3510 txn->rsp.msg_state = HTTP_MSG_DONE;
3511 } else {
3512 /* keep-alive not possible */
3513 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3514 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3515 trash.len += 29;
3516 } else {
3517 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3518 trash.len += 23;
3519 }
3520 stream_int_retnclose(txn->req.chn->prod, &trash);
3521 txn->req.chn->analysers = 0;
3522 }
3523
3524 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3525 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3526 if (!(s->flags & SN_FINST_MASK))
3527 s->flags |= SN_FINST_R;
3528
3529 return 1;
3530}
3531
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3532/* This stream analyser runs all HTTP request processing which is common to
3533 * frontends and backends, which means blocking ACLs, filters, connection-close,
3534 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3535 * 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]3536 * either needs more data or wants to immediately abort the request (eg: deny,
3537 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3538 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3539int 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]3540{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3541 struct http_txn *txn = &s->txn;
3542 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3543 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3544 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3545 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3546 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]3547 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3548
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3549 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3550 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3551 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3552 return 0;
3553 }
3554
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3555 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3556 req->analyse_exp = TICK_ETERNITY;
3557
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3558 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]3559 now_ms, __FUNCTION__,
3560 s,
3561 req,
3562 req->rex, req->wex,
3563 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3564 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3565 req->analysers);
3566
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3567 /* first check whether we have some ACLs set to block this request */
3568 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3569 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]3570
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3571 ret = acl_pass(ret);
3572 if (cond->pol == ACL_COND_UNLESS)
3573 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3574
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3575 if (ret) {
3576 txn->status = 403;
3577 /* let's log the request time */
3578 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3579 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3580 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3581 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3582 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3583 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3584
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3585 /* just in case we have some per-backend tracking */
3586 session_inc_be_http_req_ctr(s);
3587
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3588 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3589 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]3590
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3591 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3592 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3593 do_stats = stats_check_uri(s->rep->prod, txn, px);
3594 if (do_stats)
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3595 http_req_last_rule = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3596 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3597 else
3598 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3599
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3600 /* return a 403 if either rule has blocked */
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3601 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
3602 if (txn->flags & TX_CLDENY) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3603 txn->status = 403;
3604 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3605 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3606 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3607 s->fe->fe_counters.denied_req++;
3608 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3609 s->be->be_counters.denied_req++;
3610 if (s->listener->counters)
3611 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3612 goto return_prx_cond;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3613 }
3614 /* When a connection is tarpitted, we use the tarpit timeout,
3615 * which may be the same as the connect timeout if unspecified.
3616 * If unset, then set it to zero because we really want it to
3617 * eventually expire. We build the tarpit as an analyser.
3618 */
3619 if (txn->flags & TX_CLTARPIT) {
3620 channel_erase(s->req);
3621 /* wipe the request out so that we can drop the connection early
3622 * if the client closes first.
3623 */
3624 channel_dont_connect(req);
3625 req->analysers = 0; /* remove switching rules etc... */
3626 req->analysers |= AN_REQ_HTTP_TARPIT;
3627 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3628 if (!req->analyse_exp)
3629 req->analyse_exp = tick_add(now_ms, 0);
3630 session_inc_http_err_ctr(s);
3631 s->fe->fe_counters.denied_req++;
3632 if (s->fe != s->be)
3633 s->be->be_counters.denied_req++;
3634 if (s->listener->counters)
3635 s->listener->counters->denied_req++;
3636 return 1;
3637 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3638 }
3639
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3640 /* try headers filters */
3641 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3642 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3643 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3644
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3645 /* has the request been denied ? */
3646 if (txn->flags & TX_CLDENY) {
3647 /* no need to go further */
3648 txn->status = 403;
3649 /* let's log the request time */
3650 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3651 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3652 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3653 goto return_prx_cond;
3654 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3655
3656 /* When a connection is tarpitted, we use the tarpit timeout,
3657 * which may be the same as the connect timeout if unspecified.
3658 * If unset, then set it to zero because we really want it to
3659 * eventually expire. We build the tarpit as an analyser.
3660 */
3661 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3662 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3663 /* wipe the request out so that we can drop the connection early
3664 * if the client closes first.
3665 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3666 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3667 req->analysers = 0; /* remove switching rules etc... */
3668 req->analysers |= AN_REQ_HTTP_TARPIT;
3669 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3670 if (!req->analyse_exp)
3671 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3672 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3673 return 1;
3674 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3675 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3676
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3677 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3678 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3679 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3680 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3681 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3682 * avoid to redo the same work if FE and BE have the same settings (common).
3683 * The method consists in checking if options changed between the two calls
3684 * (implying that either one is non-null, or one of them is non-null and we
3685 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3686 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3687
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3688 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3689 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3690 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3691 (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]3692 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3693
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3694 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3695 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3696 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3697 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3698 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3699 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3700 tmp = TX_CON_WANT_CLO;
3701
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3702 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3703 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3704
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3705 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3706 /* parse the Connection header and possibly clean it */
3707 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3708 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3709 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3710 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3711 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3712 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3713 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3714 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3715 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3716
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3717 /* check if client or config asks for explicit close in KAL/SCL */
3718 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3719 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3720 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3721 (!(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]3722 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3723 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3724 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3725 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3726 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3727
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3728 /* we can be blocked here because the request needs to be authenticated,
3729 * either to pass or to access stats.
3730 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3731 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3732 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3733
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3734 if (!realm)
3735 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3736
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3737 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]3738 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3739 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3740 /* on 401 we still count one error, because normal browsing
3741 * won't significantly increase the counter but brute force
3742 * attempts will.
3743 */
3744 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3745 goto return_prx_cond;
3746 }
3747
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3748 /* add request headers from the rule sets in the same order */
3749 list_for_each_entry(wl, &px->req_add, list) {
3750 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3751 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]3752 ret = acl_pass(ret);
3753 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3754 ret = !ret;
3755 if (!ret)
3756 continue;
3757 }
3758
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3759 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3760 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3761 }
3762
3763 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3764 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3765 goto return_bad_req;
3766 req->analyse_exp = TICK_ETERNITY;
3767 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3768 }
3769
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3770 if (unlikely(do_stats)) {
3771 /* process the stats request now */
3772 if (!http_handle_stats(s, req)) {
3773 /* we need more data, let's come back here later */
3774 req->analysers |= an_bit;
3775 channel_dont_connect(req);
Willy Tarreau7fe33002013-04-21 08:04:22 +0200[diff] [blame]3776 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3777 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3778 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3779 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3780
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3781 /* check whether we have some ACLs set to redirect this request */
3782 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3783 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3784 int ret;
3785
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3786 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]3787 ret = acl_pass(ret);
3788 if (rule->cond->pol == ACL_COND_UNLESS)
3789 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3790 if (!ret)
3791 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3792 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3793 if (!http_apply_redirect_rule(rule, s, txn))
3794 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3795
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3796 req->analyse_exp = TICK_ETERNITY;
3797 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3798 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3799
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3800 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3801 * If this happens, then the data will not come immediately, so we must
3802 * send all what we have without waiting. Note that due to the small gain
3803 * 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]3804 * 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]3805 * itself once used.
3806 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3807 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3808
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3809 /* that's OK for us now, let's move on to next analysers */
3810 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3811
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3812 return_bad_req:
3813 /* We centralize bad requests processing here */
3814 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3815 /* we detected a parsing error. We want to archive this request
3816 * in the dedicated proxy area for later troubleshooting.
3817 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3818 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]3819 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3820
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3821 txn->req.msg_state = HTTP_MSG_ERROR;
3822 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3823 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3824
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3825 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3826 if (s->listener->counters)
3827 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3828
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3829 return_prx_cond:
3830 if (!(s->flags & SN_ERR_MASK))
3831 s->flags |= SN_ERR_PRXCOND;
3832 if (!(s->flags & SN_FINST_MASK))
3833 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3834
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3835 req->analysers = 0;
3836 req->analyse_exp = TICK_ETERNITY;
3837 return 0;
3838}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3839
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3840/* This function performs all the processing enabled for the current request.
3841 * It returns 1 if the processing can continue on next analysers, or zero if it
3842 * needs more data, encounters an error, or wants to immediately abort the
3843 * request. It relies on buffers flags, and updates s->req->analysers.
3844 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3845int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3846{
3847 struct http_txn *txn = &s->txn;
3848 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3849
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3850 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3851 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3852 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3853 return 0;
3854 }
3855
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3856 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]3857 now_ms, __FUNCTION__,
3858 s,
3859 req,
3860 req->rex, req->wex,
3861 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3862 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3863 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3864
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3865 if (s->fe->comp || s->be->comp)
3866 select_compression_request_header(s, req->buf);
3867
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3868 /*
3869 * Right now, we know that we have processed the entire headers
3870 * and that unwanted requests have been filtered out. We can do
3871 * whatever we want with the remaining request. Also, now we
3872 * may have separate values for ->fe, ->be.
3873 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3874
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3875 /*
3876 * If HTTP PROXY is set we simply get remote server address
3877 * parsing incoming request.
3878 */
3879 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3880 url2sa(req->buf->p + msg->sl.rq.u, msg->sl.rq.u_l, &s->req->cons->conn->addr.to);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3881 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3882
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3883 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3884 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3885 * Note that doing so might move headers in the request, but
3886 * the fields will stay coherent and the URI will not move.
3887 * This should only be performed in the backend.
3888 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3889 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3890 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3891 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3892
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3893 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3894 * 8: the appsession cookie was looked up very early in 1.2,
3895 * so let's do the same now.
3896 */
3897
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3898 /* It needs to look into the URI unless persistence must be ignored */
3899 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3900 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]3901 }
3902
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3903 /* add unique-id if "header-unique-id" is specified */
3904
3905 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3906 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3907
3908 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3909 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3910 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3911 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3912 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]3913 goto return_bad_req;
3914 }
3915
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3916 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3917 * 9: add X-Forwarded-For if either the frontend or the backend
3918 * asks for it.
3919 */
3920 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3921 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3922 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3923 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3924 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]3925 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3926 /* The header is set to be added only if none is present
3927 * and we found it, so don't do anything.
3928 */
3929 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3930 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3931 /* Add an X-Forwarded-For header unless the source IP is
3932 * in the 'except' network range.
3933 */
3934 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3935 (((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3936 != s->fe->except_net.s_addr) &&
3937 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3938 (((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3939 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3940 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3941 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3942 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3943
3944 /* Note: we rely on the backend to get the header name to be used for
3945 * x-forwarded-for, because the header is really meant for the backends.
3946 * However, if the backend did not specify any option, we have to rely
3947 * on the frontend's header name.
3948 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3949 if (s->be->fwdfor_hdr_len) {
3950 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3951 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3952 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3953 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3954 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3955 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3956 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]3957
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3958 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]3959 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3960 }
3961 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3962 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3963 /* FIXME: for the sake of completeness, we should also support
3964 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3965 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3966 int len;
3967 char pn[INET6_ADDRSTRLEN];
3968 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3969 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3970 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3971
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3972 /* Note: we rely on the backend to get the header name to be used for
3973 * x-forwarded-for, because the header is really meant for the backends.
3974 * However, if the backend did not specify any option, we have to rely
3975 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3976 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3977 if (s->be->fwdfor_hdr_len) {
3978 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3979 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3980 } else {
3981 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3982 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3983 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3984 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3985
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3986 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]3987 goto return_bad_req;
3988 }
3989 }
3990
3991 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3992 * 10: add X-Original-To if either the frontend or the backend
3993 * asks for it.
3994 */
3995 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3996
3997 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3998 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3999 /* Add an X-Original-To header unless the destination IP is
4000 * in the 'except' network range.
4001 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4002 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4003
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4004 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4005 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4006 (((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4007 != s->fe->except_to.s_addr) &&
4008 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4009 (((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4010 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4011 int len;
4012 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4013 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4014
4015 /* Note: we rely on the backend to get the header name to be used for
4016 * x-original-to, because the header is really meant for the backends.
4017 * However, if the backend did not specify any option, we have to rely
4018 * on the frontend's header name.
4019 */
4020 if (s->be->orgto_hdr_len) {
4021 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4022 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4023 } else {
4024 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4025 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4026 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4027 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]4028
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4029 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]4030 goto return_bad_req;
4031 }
4032 }
4033 }
4034
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4035 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4036 * If an "Upgrade" token is found, the header is left untouched in order not to have
4037 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4038 * "Upgrade" is present in the Connection header.
4039 */
4040 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4041 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
4042 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4043 unsigned int want_flags = 0;
4044
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4045 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4046 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
4047 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
4048 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4049 want_flags |= TX_CON_CLO_SET;
4050 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4051 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
4052 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
4053 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4054 want_flags |= TX_CON_KAL_SET;
4055 }
4056
4057 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4058 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4059 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4060
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4061
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4062 /* If we have no server assigned yet and we're balancing on url_param
4063 * with a POST request, we may be interested in checking the body for
4064 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4065 */
4066 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4067 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4068 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4069 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4070 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4071 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4072 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4073
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4074 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4075 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4076#ifdef TCP_QUICKACK
4077 /* We expect some data from the client. Unless we know for sure
4078 * we already have a full request, we have to re-enable quick-ack
4079 * in case we previously disabled it, otherwise we might cause
4080 * the client to delay further data.
4081 */
4082 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4083 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4084 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]4085 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4086#endif
4087 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4088
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4089 /*************************************************************
4090 * OK, that's finished for the headers. We have done what we *
4091 * could. Let's switch to the DATA state. *
4092 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4093 req->analyse_exp = TICK_ETERNITY;
4094 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4095
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4096 /* if the server closes the connection, we want to immediately react
4097 * and close the socket to save packets and syscalls.
4098 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4099 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4100 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4101
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4102 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4103 /* OK let's go on with the BODY now */
4104 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4105
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4106 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4107 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4108 /* we detected a parsing error. We want to archive this request
4109 * in the dedicated proxy area for later troubleshooting.
4110 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4111 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]4112 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4113
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4114 txn->req.msg_state = HTTP_MSG_ERROR;
4115 txn->status = 400;
4116 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4117 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4118
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4119 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4120 if (s->listener->counters)
4121 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4122
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4123 if (!(s->flags & SN_ERR_MASK))
4124 s->flags |= SN_ERR_PRXCOND;
4125 if (!(s->flags & SN_FINST_MASK))
4126 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4127 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4128}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4129
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4130/* This function is an analyser which processes the HTTP tarpit. It always
4131 * returns zero, at the beginning because it prevents any other processing
4132 * from occurring, and at the end because it terminates the request.
4133 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4134int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4135{
4136 struct http_txn *txn = &s->txn;
4137
4138 /* This connection is being tarpitted. The CLIENT side has
4139 * already set the connect expiration date to the right
4140 * timeout. We just have to check that the client is still
4141 * there and that the timeout has not expired.
4142 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4143 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4144 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4145 !tick_is_expired(req->analyse_exp, now_ms))
4146 return 0;
4147
4148 /* We will set the queue timer to the time spent, just for
4149 * logging purposes. We fake a 500 server error, so that the
4150 * attacker will not suspect his connection has been tarpitted.
4151 * It will not cause trouble to the logs because we can exclude
4152 * the tarpitted connections by filtering on the 'PT' status flags.
4153 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4154 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4155
4156 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4157 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4158 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4159
4160 req->analysers = 0;
4161 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4162
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4163 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4164 if (s->listener->counters)
4165 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4166
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4167 if (!(s->flags & SN_ERR_MASK))
4168 s->flags |= SN_ERR_PRXCOND;
4169 if (!(s->flags & SN_FINST_MASK))
4170 s->flags |= SN_FINST_T;
4171 return 0;
4172}
4173
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4174/* This function is an analyser which processes the HTTP request body. It looks
4175 * for parameters to be used for the load balancing algorithm (url_param). It
4176 * must only be called after the standard HTTP request processing has occurred,
4177 * because it expects the request to be parsed. It returns zero if it needs to
4178 * read more data, or 1 once it has completed its analysis.
4179 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4180int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4181{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4182 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4183 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4184 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4185
4186 /* We have to parse the HTTP request body to find any required data.
4187 * "balance url_param check_post" should have been the only way to get
4188 * into this. We were brought here after HTTP header analysis, so all
4189 * related structures are ready.
4190 */
4191
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4192 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4193 goto missing_data;
4194
4195 if (msg->msg_state < HTTP_MSG_100_SENT) {
4196 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4197 * send an HTTP/1.1 100 Continue intermediate response.
4198 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4199 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4200 struct hdr_ctx ctx;
4201 ctx.idx = 0;
4202 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4203 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4204 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4205 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4206 }
4207 }
4208 msg->msg_state = HTTP_MSG_100_SENT;
4209 }
4210
4211 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4212 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4213 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4214 * is still null. We must save the body in msg->next because it
4215 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4216 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4217 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4218
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4219 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4220 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4221 else
4222 msg->msg_state = HTTP_MSG_DATA;
4223 }
4224
4225 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4226 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4227 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4228 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4229 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4230 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4231
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4232 if (!ret)
4233 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4234 else if (ret < 0) {
4235 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4236 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4237 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4238 }
4239
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4240 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4241 * We have the first data byte is in msg->sov. We're waiting for at
4242 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4243 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4244
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4245 if (msg->body_len < limit)
4246 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4247
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4248 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4249 goto http_end;
4250
4251 missing_data:
4252 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4253 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4254 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4255 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4256 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4257
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4258 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4259 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4260 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4261
4262 if (!(s->flags & SN_ERR_MASK))
4263 s->flags |= SN_ERR_CLITO;
4264 if (!(s->flags & SN_FINST_MASK))
4265 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4266 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4267 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4268
4269 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4270 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]4271 /* Not enough data. We'll re-use the http-request
4272 * timeout here. Ideally, we should set the timeout
4273 * relative to the accept() date. We just set the
4274 * request timeout once at the beginning of the
4275 * request.
4276 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4277 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4278 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4279 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4280 return 0;
4281 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4282
4283 http_end:
4284 /* The situation will not evolve, so let's give up on the analysis. */
4285 s->logs.tv_request = now; /* update the request timer to reflect full request */
4286 req->analysers &= ~an_bit;
4287 req->analyse_exp = TICK_ETERNITY;
4288 return 1;
4289
4290 return_bad_req: /* let's centralize all bad requests */
4291 txn->req.msg_state = HTTP_MSG_ERROR;
4292 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4293 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4294
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4295 if (!(s->flags & SN_ERR_MASK))
4296 s->flags |= SN_ERR_PRXCOND;
4297 if (!(s->flags & SN_FINST_MASK))
4298 s->flags |= SN_FINST_R;
4299
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4300 return_err_msg:
4301 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4302 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4303 if (s->listener->counters)
4304 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4305 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4306}
4307
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4308/* send a server's name with an outgoing request over an established connection.
4309 * Note: this function is designed to be called once the request has been scheduled
4310 * for being forwarded. This is the reason why it rewinds the buffer before
4311 * proceeding.
4312 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4313int 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]4314
4315 struct hdr_ctx ctx;
4316
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4317 char *hdr_name = be->server_id_hdr_name;
4318 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4319 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4320 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4321 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4322
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4323 ctx.idx = 0;
4324
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4325 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4326 if (old_o) {
4327 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4328 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4329 }
4330
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4331 old_i = chn->buf->i;
4332 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]4333 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4334 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4335 }
4336
4337 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4338 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4339 memcpy(hdr_val, hdr_name, hdr_name_len);
4340 hdr_val += hdr_name_len;
4341 *hdr_val++ = ':';
4342 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4343 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4344 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]4345
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4346 if (old_o) {
4347 /* If this was a forwarded request, we must readjust the amount of
4348 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4349 * variations. Note that if the request was already scheduled for
4350 * forwarding, it had its req->sol pointing to the body, which
4351 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4352 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4353 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4354 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4355 }
4356
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4357 return 0;
4358}
4359
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4360/* Terminate current transaction and prepare a new one. This is very tricky
4361 * right now but it works.
4362 */
4363void http_end_txn_clean_session(struct session *s)
4364{
4365 /* FIXME: We need a more portable way of releasing a backend's and a
4366 * server's connections. We need a safer way to reinitialize buffer
4367 * flags. We also need a more accurate method for computing per-request
4368 * data.
4369 */
4370 http_silent_debug(__LINE__, s);
4371
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4372 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4373 si_shutr(s->req->cons);
4374 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4375
4376 http_silent_debug(__LINE__, s);
4377
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4378 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4379 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4380 if (unlikely(s->srv_conn))
4381 sess_change_server(s, NULL);
4382 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4383
4384 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4385 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4386 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4387
4388 if (s->txn.status) {
4389 int n;
4390
4391 n = s->txn.status / 100;
4392 if (n < 1 || n > 5)
4393 n = 0;
4394
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4395 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4396 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4397 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4398 s->fe->fe_counters.p.http.comp_rsp++;
4399 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4400 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4401 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4402 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4403 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4404 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4405 s->be->be_counters.p.http.comp_rsp++;
4406 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4407 }
4408
4409 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4410 s->logs.bytes_in -= s->req->buf->i;
4411 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4412
4413 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4414 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4415 !(s->flags & SN_MONITOR) &&
4416 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4417 s->do_log(s);
4418 }
4419
4420 s->logs.accept_date = date; /* user-visible date for logging */
4421 s->logs.tv_accept = now; /* corrected date for internal use */
4422 tv_zero(&s->logs.tv_request);
4423 s->logs.t_queue = -1;
4424 s->logs.t_connect = -1;
4425 s->logs.t_data = -1;
4426 s->logs.t_close = 0;
4427 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4428 s->logs.srv_queue_size = 0; /* we will get this number soon */
4429
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4430 s->logs.bytes_in = s->req->total = s->req->buf->i;
4431 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4432
4433 if (s->pend_pos)
4434 pendconn_free(s->pend_pos);
4435
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4436 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4437 if (s->flags & SN_CURR_SESS) {
4438 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4439 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4440 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4441 if (may_dequeue_tasks(objt_server(s->target), s->be))
4442 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4443 }
4444
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4445 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4446
4447 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4448 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4449 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4450 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4451 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4452 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4453 s->req->cons->err_loc = NULL;
4454 s->req->cons->exp = TICK_ETERNITY;
4455 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4456 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4457 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]4458 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]4459 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4460
4461 if (s->flags & SN_COMP_READY)
4462 s->comp_algo->end(&s->comp_ctx);
4463 s->comp_algo = NULL;
4464 s->flags &= ~SN_COMP_READY;
4465
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4466 s->txn.meth = 0;
4467 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4468 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4469 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4470 s->req->cons->flags |= SI_FL_INDEP_STR;
4471
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4472 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4473 s->req->flags |= CF_NEVER_WAIT;
4474 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4475 }
4476
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4477 /* if the request buffer is not empty, it means we're
4478 * about to process another request, so send pending
4479 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4480 * Just don't do this if the buffer is close to be full,
4481 * because the request will wait for it to flush a little
4482 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4483 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4484 if (s->req->buf->i) {
4485 if (s->rep->buf->o &&
4486 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4487 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]4488 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4489 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4490
4491 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4492 channel_auto_read(s->req);
4493 channel_auto_close(s->req);
4494 channel_auto_read(s->rep);
4495 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4496
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4497 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4498 s->rep->analysers = 0;
4499
4500 http_silent_debug(__LINE__, s);
4501}
4502
4503
4504/* This function updates the request state machine according to the response
4505 * state machine and buffer flags. It returns 1 if it changes anything (flag
4506 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4507 * it is only used to find when a request/response couple is complete. Both
4508 * this function and its equivalent should loop until both return zero. It
4509 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4510 */
4511int http_sync_req_state(struct session *s)
4512{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4513 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4514 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4515 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4516 unsigned int old_state = txn->req.msg_state;
4517
4518 http_silent_debug(__LINE__, s);
4519 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4520 return 0;
4521
4522 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4523 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4524 * We can shut the read side unless we want to abort_on_close,
4525 * or we have a POST request. The issue with POST requests is
4526 * that some browsers still send a CRLF after the request, and
4527 * this CRLF must be read so that it does not remain in the kernel
4528 * buffers, otherwise a close could cause an RST on some systems
4529 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4530 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4531 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4532 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4533
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4534 /* if the server closes the connection, we want to immediately react
4535 * and close the socket to save packets and syscalls.
4536 */
4537 chn->cons->flags |= SI_FL_NOHALF;
4538
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4539 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4540 goto wait_other_side;
4541
4542 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4543 /* The server has not finished to respond, so we
4544 * don't want to move in order not to upset it.
4545 */
4546 goto wait_other_side;
4547 }
4548
4549 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4550 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4551 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4552 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4553 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4554 goto wait_other_side;
4555 }
4556
4557 /* When we get here, it means that both the request and the
4558 * response have finished receiving. Depending on the connection
4559 * mode, we'll have to wait for the last bytes to leave in either
4560 * direction, and sometimes for a close to be effective.
4561 */
4562
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4563 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4564 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4565 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4566 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4567 }
4568 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4569 /* Option forceclose is set, or either side wants to close,
4570 * let's enforce it now that we're not expecting any new
4571 * data to come. The caller knows the session is complete
4572 * once both states are CLOSED.
4573 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4574 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4575 channel_shutr_now(chn);
4576 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4577 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4578 }
4579 else {
4580 /* The last possible modes are keep-alive and tunnel. Since tunnel
4581 * mode does not set the body analyser, we can't reach this place
4582 * in tunnel mode, so we're left with keep-alive only.
4583 * This mode is currently not implemented, we switch to tunnel mode.
4584 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4585 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4586 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4587 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4588 }
4589
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4590 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4591 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4592 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4593
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4594 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4595 txn->req.msg_state = HTTP_MSG_CLOSING;
4596 goto http_msg_closing;
4597 }
4598 else {
4599 txn->req.msg_state = HTTP_MSG_CLOSED;
4600 goto http_msg_closed;
4601 }
4602 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4603 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4604 }
4605
4606 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4607 http_msg_closing:
4608 /* nothing else to forward, just waiting for the output buffer
4609 * to be empty and for the shutw_now to take effect.
4610 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4611 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4612 txn->req.msg_state = HTTP_MSG_CLOSED;
4613 goto http_msg_closed;
4614 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4615 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4616 txn->req.msg_state = HTTP_MSG_ERROR;
4617 goto wait_other_side;
4618 }
4619 }
4620
4621 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4622 http_msg_closed:
4623 goto wait_other_side;
4624 }
4625
4626 wait_other_side:
4627 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4628 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4629}
4630
4631
4632/* This function updates the response state machine according to the request
4633 * state machine and buffer flags. It returns 1 if it changes anything (flag
4634 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4635 * it is only used to find when a request/response couple is complete. Both
4636 * this function and its equivalent should loop until both return zero. It
4637 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4638 */
4639int http_sync_res_state(struct session *s)
4640{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4641 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4642 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4643 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4644 unsigned int old_state = txn->rsp.msg_state;
4645
4646 http_silent_debug(__LINE__, s);
4647 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4648 return 0;
4649
4650 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4651 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4652 * still monitor the server connection for a possible close
4653 * while the request is being uploaded, so we don't disable
4654 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4655 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4656 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4657
4658 if (txn->req.msg_state == HTTP_MSG_ERROR)
4659 goto wait_other_side;
4660
4661 if (txn->req.msg_state < HTTP_MSG_DONE) {
4662 /* The client seems to still be sending data, probably
4663 * because we got an error response during an upload.
4664 * We have the choice of either breaking the connection
4665 * or letting it pass through. Let's do the later.
4666 */
4667 goto wait_other_side;
4668 }
4669
4670 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4671 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4672 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4673 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4674 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4675 goto wait_other_side;
4676 }
4677
4678 /* When we get here, it means that both the request and the
4679 * response have finished receiving. Depending on the connection
4680 * mode, we'll have to wait for the last bytes to leave in either
4681 * direction, and sometimes for a close to be effective.
4682 */
4683
4684 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4685 /* Server-close mode : shut read and wait for the request
4686 * side to close its output buffer. The caller will detect
4687 * when we're in DONE and the other is in CLOSED and will
4688 * catch that for the final cleanup.
4689 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4690 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4691 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4692 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4693 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4694 /* Option forceclose is set, or either side wants to close,
4695 * let's enforce it now that we're not expecting any new
4696 * data to come. The caller knows the session is complete
4697 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4698 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4699 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4700 channel_shutr_now(chn);
4701 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4702 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4703 }
4704 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4705 /* The last possible modes are keep-alive and tunnel. Since tunnel
4706 * mode does not set the body analyser, we can't reach this place
4707 * in tunnel mode, so we're left with keep-alive only.
4708 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4709 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4710 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4711 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4712 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4713 }
4714
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4715 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4716 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4717 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4718 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4719 goto http_msg_closing;
4720 }
4721 else {
4722 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4723 goto http_msg_closed;
4724 }
4725 }
4726 goto wait_other_side;
4727 }
4728
4729 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4730 http_msg_closing:
4731 /* nothing else to forward, just waiting for the output buffer
4732 * to be empty and for the shutw_now to take effect.
4733 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4734 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4735 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4736 goto http_msg_closed;
4737 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4738 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4739 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4740 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4741 if (objt_server(s->target))
4742 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4743 goto wait_other_side;
4744 }
4745 }
4746
4747 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4748 http_msg_closed:
4749 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4750 bi_erase(chn);
4751 channel_auto_close(chn);
4752 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4753 goto wait_other_side;
4754 }
4755
4756 wait_other_side:
4757 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4758 /* We force the response to leave immediately if we're waiting for the
4759 * other side, since there is no pending shutdown to push it out.
4760 */
4761 if (!channel_is_empty(chn))
4762 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4763 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4764}
4765
4766
4767/* Resync the request and response state machines. Return 1 if either state
4768 * changes.
4769 */
4770int http_resync_states(struct session *s)
4771{
4772 struct http_txn *txn = &s->txn;
4773 int old_req_state = txn->req.msg_state;
4774 int old_res_state = txn->rsp.msg_state;
4775
4776 http_silent_debug(__LINE__, s);
4777 http_sync_req_state(s);
4778 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4779 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4780 if (!http_sync_res_state(s))
4781 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4782 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4783 if (!http_sync_req_state(s))
4784 break;
4785 }
4786 http_silent_debug(__LINE__, s);
4787 /* OK, both state machines agree on a compatible state.
4788 * There are a few cases we're interested in :
4789 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4790 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4791 * directions, so let's simply disable both analysers.
4792 * - HTTP_MSG_CLOSED on the response only means we must abort the
4793 * request.
4794 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4795 * with server-close mode means we've completed one request and we
4796 * must re-initialize the server connection.
4797 */
4798
4799 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4800 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4801 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4802 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4803 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4804 channel_auto_close(s->req);
4805 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4806 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4807 channel_auto_close(s->rep);
4808 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4809 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4810 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4811 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4812 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4813 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4814 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4815 channel_auto_close(s->rep);
4816 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4817 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4818 channel_abort(s->req);
4819 channel_auto_close(s->req);
4820 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4821 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4822 }
4823 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4824 txn->rsp.msg_state == HTTP_MSG_DONE &&
4825 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4826 /* server-close: terminate this server connection and
4827 * reinitialize a fresh-new transaction.
4828 */
4829 http_end_txn_clean_session(s);
4830 }
4831
4832 http_silent_debug(__LINE__, s);
4833 return txn->req.msg_state != old_req_state ||
4834 txn->rsp.msg_state != old_res_state;
4835}
4836
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4837/* This function is an analyser which forwards request body (including chunk
4838 * sizes if any). It is called as soon as we must forward, even if we forward
4839 * zero byte. The only situation where it must not be called is when we're in
4840 * tunnel mode and we want to forward till the close. It's used both to forward
4841 * remaining data and to resync after end of body. It expects the msg_state to
4842 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4843 * 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]4844 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4845 * bytes of pending data + the headers if not already done (between sol and sov).
4846 * 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]4847 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4848int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4849{
4850 struct http_txn *txn = &s->txn;
4851 struct http_msg *msg = &s->txn.req;
4852
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4853 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4854 return 0;
4855
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4856 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]4857 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4858 /* Output closed while we were sending data. We must abort and
4859 * wake the other side up.
4860 */
4861 msg->msg_state = HTTP_MSG_ERROR;
4862 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4863 return 1;
4864 }
4865
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4866 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4867 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4868
4869 /* Note that we don't have to send 100-continue back because we don't
4870 * need the data to complete our job, and it's up to the server to
4871 * decide whether to return 100, 417 or anything else in return of
4872 * an "Expect: 100-continue" header.
4873 */
4874
4875 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4876 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4877 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4878 * is still null. We must save the body in msg->next because it
4879 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4880 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4881 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4882
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4883 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4884 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4885 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4886 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4887 }
4888
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4889 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4890 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4891
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4892 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4893 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4894 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4895 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4896 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4897 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4898 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4899 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4900 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4901
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4902 if (msg->msg_state == HTTP_MSG_DATA) {
4903 /* must still forward */
4904 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4905 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4906
4907 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4908 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4909 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4910 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4911 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4912 }
4913 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4914 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4915 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4916 * TRAILERS state.
4917 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4918 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4919
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4920 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4921 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4922 else if (ret < 0) {
4923 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4924 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4925 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]4926 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4927 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4928 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4929 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4930 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4931 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4932 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4933
4934 if (ret == 0)
4935 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4936 else if (ret < 0) {
4937 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4938 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4939 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]4940 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4941 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4942 /* we're in MSG_CHUNK_SIZE now */
4943 }
4944 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4945 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4946
4947 if (ret == 0)
4948 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4949 else if (ret < 0) {
4950 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4951 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4952 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]4953 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4954 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4955 /* we're in HTTP_MSG_DONE now */
4956 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4957 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4958 int old_state = msg->msg_state;
4959
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4960 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4961 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4962 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4963 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4964 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4965 if (http_resync_states(s)) {
4966 /* some state changes occurred, maybe the analyser
4967 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4968 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4969 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4970 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4971 /* request errors are most likely due to
4972 * the server aborting the transfer.
4973 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4974 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4975 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4976 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4977 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4978 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4979 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4980 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4981 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4982
4983 /* If "option abortonclose" is set on the backend, we
4984 * want to monitor the client's connection and forward
4985 * any shutdown notification to the server, which will
4986 * decide whether to close or to go on processing the
4987 * request.
4988 */
4989 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4990 channel_auto_read(req);
4991 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4992 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4993 else if (s->txn.meth == HTTP_METH_POST) {
4994 /* POST requests may require to read extra CRLF
4995 * sent by broken browsers and which could cause
4996 * an RST to be sent upon close on some systems
4997 * (eg: Linux).
4998 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4999 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5000 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5001
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5002 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5003 }
5004 }
5005
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5006 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5007 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5008 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5009 if (!(s->flags & SN_ERR_MASK))
5010 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5011 if (!(s->flags & SN_FINST_MASK)) {
5012 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5013 s->flags |= SN_FINST_H;
5014 else
5015 s->flags |= SN_FINST_D;
5016 }
5017
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5018 s->fe->fe_counters.cli_aborts++;
5019 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5020 if (objt_server(s->target))
5021 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5022
5023 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5024 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5025
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5026 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5027 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5028 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5029
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5030 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5031 * 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]5032 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5033 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5034 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5035
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5036 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5037 * 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]5038 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5039 * modes are already handled by the stream sock layer. We must not do
5040 * this in content-length mode because it could present the MSG_MORE
5041 * flag with the last block of forwarded data, which would cause an
5042 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5043 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5044 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5045 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5046
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5047 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5048 return 0;
5049
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5050 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5051 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5052 if (s->listener->counters)
5053 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5054 return_bad_req_stats_ok:
5055 txn->req.msg_state = HTTP_MSG_ERROR;
5056 if (txn->status) {
5057 /* Note: we don't send any error if some data were already sent */
5058 stream_int_retnclose(req->prod, NULL);
5059 } else {
5060 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5061 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5062 }
5063 req->analysers = 0;
5064 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]5065
5066 if (!(s->flags & SN_ERR_MASK))
5067 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5068 if (!(s->flags & SN_FINST_MASK)) {
5069 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5070 s->flags |= SN_FINST_H;
5071 else
5072 s->flags |= SN_FINST_D;
5073 }
5074 return 0;
5075
5076 aborted_xfer:
5077 txn->req.msg_state = HTTP_MSG_ERROR;
5078 if (txn->status) {
5079 /* Note: we don't send any error if some data were already sent */
5080 stream_int_retnclose(req->prod, NULL);
5081 } else {
5082 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5083 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5084 }
5085 req->analysers = 0;
5086 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5087
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5088 s->fe->fe_counters.srv_aborts++;
5089 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5090 if (objt_server(s->target))
5091 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5092
5093 if (!(s->flags & SN_ERR_MASK))
5094 s->flags |= SN_ERR_SRVCL;
5095 if (!(s->flags & SN_FINST_MASK)) {
5096 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5097 s->flags |= SN_FINST_H;
5098 else
5099 s->flags |= SN_FINST_D;
5100 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5101 return 0;
5102}
5103
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5104/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5105 * processing can continue on next analysers, or zero if it either needs more
5106 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5107 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5108 * when it has nothing left to do, and may remove any analyser when it wants to
5109 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5110 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5111int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5112{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5113 struct http_txn *txn = &s->txn;
5114 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5115 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5116 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5117 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5118 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5119
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5120 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]5121 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5122 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5123 rep,
5124 rep->rex, rep->wex,
5125 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5126 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5127 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5128
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5129 /*
5130 * Now parse the partial (or complete) lines.
5131 * We will check the response syntax, and also join multi-line
5132 * headers. An index of all the lines will be elaborated while
5133 * parsing.
5134 *
5135 * For the parsing, we use a 28 states FSM.
5136 *
5137 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5138 * rep->buf->p = beginning of response
5139 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5140 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5141 * msg->eol = end of current header or line (LF or CRLF)
5142 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5143 */
5144
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5145 /* There's a protected area at the end of the buffer for rewriting
5146 * purposes. We don't want to start to parse the request if the
5147 * protected area is affected, because we may have to move processed
5148 * data later, which is much more complicated.
5149 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5150 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5151 if (unlikely(!channel_reserved(rep))) {
5152 /* some data has still not left the buffer, wake us once that's done */
5153 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5154 goto abort_response;
5155 channel_dont_close(rep);
5156 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
5157 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5158 }
5159
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5160 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5161 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5162 buffer_slow_realign(rep->buf);
5163
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5164 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5165 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5166 }
5167
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5168 /* 1: we might have to print this header in debug mode */
5169 if (unlikely((global.mode & MODE_DEBUG) &&
5170 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5171 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5172 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5173
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5174 sol = rep->buf->p;
5175 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5176 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5177
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5178 sol += hdr_idx_first_pos(&txn->hdr_idx);
5179 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5180
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5181 while (cur_idx) {
5182 eol = sol + txn->hdr_idx.v[cur_idx].len;
5183 debug_hdr("srvhdr", s, sol, eol);
5184 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5185 cur_idx = txn->hdr_idx.v[cur_idx].next;
5186 }
5187 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5188
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5189 /*
5190 * Now we quickly check if we have found a full valid response.
5191 * If not so, we check the FD and buffer states before leaving.
5192 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5193 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5194 * responses are checked first.
5195 *
5196 * Depending on whether the client is still there or not, we
5197 * may send an error response back or not. Note that normally
5198 * we should only check for HTTP status there, and check I/O
5199 * errors somewhere else.
5200 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5201
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5202 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5203 /* Invalid response */
5204 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5205 /* we detected a parsing error. We want to archive this response
5206 * in the dedicated proxy area for later troubleshooting.
5207 */
5208 hdr_response_bad:
5209 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5210 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]5211
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5212 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5213 if (objt_server(s->target)) {
5214 objt_server(s->target)->counters.failed_resp++;
5215 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5216 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5217 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5218 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5219 rep->analysers = 0;
5220 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5221 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5222 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5223 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5224
5225 if (!(s->flags & SN_ERR_MASK))
5226 s->flags |= SN_ERR_PRXCOND;
5227 if (!(s->flags & SN_FINST_MASK))
5228 s->flags |= SN_FINST_H;
5229
5230 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5231 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5232
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5233 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5234 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5235 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5236 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5237 goto hdr_response_bad;
5238 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5239
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5240 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5241 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5242 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5243 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]5244
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5245 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5246 if (objt_server(s->target)) {
5247 objt_server(s->target)->counters.failed_resp++;
5248 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5249 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5250
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5251 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5252 rep->analysers = 0;
5253 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5254 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5255 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5256 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5257
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5258 if (!(s->flags & SN_ERR_MASK))
5259 s->flags |= SN_ERR_SRVCL;
5260 if (!(s->flags & SN_FINST_MASK))
5261 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5262 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5263 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5264
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5265 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5266 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5267 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5268 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]5269
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5270 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5271 if (objt_server(s->target)) {
5272 objt_server(s->target)->counters.failed_resp++;
5273 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5274 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5275
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5276 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5277 rep->analysers = 0;
5278 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5279 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5280 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5281 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5282
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5283 if (!(s->flags & SN_ERR_MASK))
5284 s->flags |= SN_ERR_SRVTO;
5285 if (!(s->flags & SN_FINST_MASK))
5286 s->flags |= SN_FINST_H;
5287 return 0;
5288 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5289
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5290 /* client abort with an abortonclose */
5291 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5292 s->fe->fe_counters.cli_aborts++;
5293 s->be->be_counters.cli_aborts++;
5294 if (objt_server(s->target))
5295 objt_server(s->target)->counters.cli_aborts++;
5296
5297 rep->analysers = 0;
5298 channel_auto_close(rep);
5299
5300 txn->status = 400;
5301 bi_erase(rep);
5302 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5303
5304 if (!(s->flags & SN_ERR_MASK))
5305 s->flags |= SN_ERR_CLICL;
5306 if (!(s->flags & SN_FINST_MASK))
5307 s->flags |= SN_FINST_H;
5308
5309 /* process_session() will take care of the error */
5310 return 0;
5311 }
5312
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5313 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5314 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5315 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5316 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]5317
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5318 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5319 if (objt_server(s->target)) {
5320 objt_server(s->target)->counters.failed_resp++;
5321 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5322 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5323
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5324 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5325 rep->analysers = 0;
5326 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5327 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5328 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5329 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5330
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5331 if (!(s->flags & SN_ERR_MASK))
5332 s->flags |= SN_ERR_SRVCL;
5333 if (!(s->flags & SN_FINST_MASK))
5334 s->flags |= SN_FINST_H;
5335 return 0;
5336 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5337
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5338 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5339 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5340 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5341 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]5342
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5343 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5344 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5345 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5346
5347 if (!(s->flags & SN_ERR_MASK))
5348 s->flags |= SN_ERR_CLICL;
5349 if (!(s->flags & SN_FINST_MASK))
5350 s->flags |= SN_FINST_H;
5351
5352 /* process_session() will take care of the error */
5353 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5354 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5355
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5356 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5357 return 0;
5358 }
5359
5360 /* More interesting part now : we know that we have a complete
5361 * response which at least looks like HTTP. We have an indicator
5362 * of each header's length, so we can parse them quickly.
5363 */
5364
5365 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5366 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]5367
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5368 /*
5369 * 1: get the status code
5370 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5371 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5372 if (n < 1 || n > 5)
5373 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5374 /* when the client triggers a 4xx from the server, it's most often due
5375 * to a missing object or permission. These events should be tracked
5376 * because if they happen often, it may indicate a brute force or a
5377 * vulnerability scan.
5378 */
5379 if (n == 4)
5380 session_inc_http_err_ctr(s);
5381
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5382 if (objt_server(s->target))
5383 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5384
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5385 /* check if the response is HTTP/1.1 or above */
5386 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5387 ((rep->buf->p[5] > '1') ||
5388 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5389 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5390
5391 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5392 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]5393
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5394 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5395 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5396
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5397 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]5398
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5399 /* Adjust server's health based on status code. Note: status codes 501
5400 * and 505 are triggered on demand by client request, so we must not
5401 * count them as server failures.
5402 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5403 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5404 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5405 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5406 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5407 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5408 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5409
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5410 /*
5411 * 2: check for cacheability.
5412 */
5413
5414 switch (txn->status) {
5415 case 200:
5416 case 203:
5417 case 206:
5418 case 300:
5419 case 301:
5420 case 410:
5421 /* RFC2616 @13.4:
5422 * "A response received with a status code of
5423 * 200, 203, 206, 300, 301 or 410 MAY be stored
5424 * by a cache (...) unless a cache-control
5425 * directive prohibits caching."
5426 *
5427 * RFC2616 @9.5: POST method :
5428 * "Responses to this method are not cacheable,
5429 * unless the response includes appropriate
5430 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5431 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5432 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5433 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5434 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5435 break;
5436 default:
5437 break;
5438 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5439
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5440 /*
5441 * 3: we may need to capture headers
5442 */
5443 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5444 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5445 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5446 txn->rsp.cap, s->fe->rsp_cap);
5447
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5448 /* 4: determine the transfer-length.
5449 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5450 * the presence of a message-body in a RESPONSE and its transfer length
5451 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5452 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5453 * All responses to the HEAD request method MUST NOT include a
5454 * message-body, even though the presence of entity-header fields
5455 * might lead one to believe they do. All 1xx (informational), 204
5456 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5457 * message-body. All other responses do include a message-body,
5458 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5459 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5460 * 1. Any response which "MUST NOT" include a message-body (such as the
5461 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5462 * always terminated by the first empty line after the header fields,
5463 * regardless of the entity-header fields present in the message.
5464 *
5465 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5466 * the "chunked" transfer-coding (Section 6.2) is used, the
5467 * transfer-length is defined by the use of this transfer-coding.
5468 * If a Transfer-Encoding header field is present and the "chunked"
5469 * transfer-coding is not present, the transfer-length is defined by
5470 * the sender closing the connection.
5471 *
5472 * 3. If a Content-Length header field is present, its decimal value in
5473 * OCTETs represents both the entity-length and the transfer-length.
5474 * If a message is received with both a Transfer-Encoding header
5475 * field and a Content-Length header field, the latter MUST be ignored.
5476 *
5477 * 4. If the message uses the media type "multipart/byteranges", and
5478 * the transfer-length is not otherwise specified, then this self-
5479 * delimiting media type defines the transfer-length. This media
5480 * type MUST NOT be used unless the sender knows that the recipient
5481 * can parse it; the presence in a request of a Range header with
5482 * multiple byte-range specifiers from a 1.1 client implies that the
5483 * client can parse multipart/byteranges responses.
5484 *
5485 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5486 */
5487
5488 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5489 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5490 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5491 * FIXME: should we parse anyway and return an error on chunked encoding ?
5492 */
5493 if (txn->meth == HTTP_METH_HEAD ||
5494 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5495 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5496 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5497 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5498 goto skip_content_length;
5499 }
5500
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5501 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5502 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5503 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5504 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5505 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5506 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5507 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5508 /* bad transfer-encoding (chunked followed by something else) */
5509 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5510 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5511 break;
5512 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5513 }
5514
5515 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5516 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5517 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5518 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5519 signed long long cl;
5520
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5521 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5522 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5523 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5524 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5525
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5526 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5527 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5528 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5529 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5530
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5531 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5532 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5533 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5534 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5535
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5536 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5537 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5538 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5539 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5540
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5541 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5542 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5543 }
5544
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5545 if (s->fe->comp || s->be->comp)
5546 select_compression_response_header(s, rep->buf);
5547
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5548 /* FIXME: we should also implement the multipart/byterange method.
5549 * For now on, we resort to close mode in this case (unknown length).
5550 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5551skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5552
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5553 /* end of job, return OK */
5554 rep->analysers &= ~an_bit;
5555 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5556 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5557 return 1;
5558}
5559
5560/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5561 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5562 * and updates t->rep->analysers. It might make sense to explode it into several
5563 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5564 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5565int 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]5566{
5567 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5568 struct http_msg *msg = &txn->rsp;
5569 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5570 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5571 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5572
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5573 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]5574 now_ms, __FUNCTION__,
5575 t,
5576 rep,
5577 rep->rex, rep->wex,
5578 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5579 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5580 rep->analysers);
5581
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5582 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5583 return 0;
5584
5585 rep->analysers &= ~an_bit;
5586 rep->analyse_exp = TICK_ETERNITY;
5587
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5588 /* Now we have to check if we need to modify the Connection header.
5589 * This is more difficult on the response than it is on the request,
5590 * because we can have two different HTTP versions and we don't know
5591 * how the client will interprete a response. For instance, let's say
5592 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5593 * HTTP/1.1 response without any header. Maybe it will bound itself to
5594 * HTTP/1.0 because it only knows about it, and will consider the lack
5595 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5596 * the lack of header as a keep-alive. Thus we will use two flags
5597 * indicating how a request MAY be understood by the client. In case
5598 * of multiple possibilities, we'll fix the header to be explicit. If
5599 * ambiguous cases such as both close and keepalive are seen, then we
5600 * will fall back to explicit close. Note that we won't take risks with
5601 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5602 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5603 */
5604
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5605 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5606 txn->status == 101)) {
5607 /* Either we've established an explicit tunnel, or we're
5608 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5609 * to understand the next protocols. We have to switch to tunnel
5610 * mode, so that we transfer the request and responses then let
5611 * this protocol pass unmodified. When we later implement specific
5612 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5613 * header which contains information about that protocol for
5614 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5615 */
5616 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5617 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5618 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5619 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5620 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5621 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5622
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5623 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5624 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5625 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5626 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5627
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5628 /* now adjust header transformations depending on current state */
5629 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5630 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5631 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5632 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5633 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5634 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5635 else { /* SCL / KAL */
5636 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5637 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5638 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5639 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5640
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5641 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5642 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5643
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5644 /* Some keep-alive responses are converted to Server-close if
5645 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5646 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5647 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5648 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5649 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5650 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5651 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5652 }
5653
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5654 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5655 /*
5656 * 3: we will have to evaluate the filters.
5657 * As opposed to version 1.2, now they will be evaluated in the
5658 * filters order and not in the header order. This means that
5659 * each filter has to be validated among all headers.
5660 *
5661 * Filters are tried with ->be first, then with ->fe if it is
5662 * different from ->be.
5663 */
5664
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5665 cur_proxy = t->be;
5666 while (1) {
5667 struct proxy *rule_set = cur_proxy;
5668
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5669 /* evaluate http-response rules */
5670 if (!http_res_last_rule)
5671 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5672
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5673 /* try headers filters */
5674 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5675 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5676 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5677 if (objt_server(t->target)) {
5678 objt_server(t->target)->counters.failed_resp++;
5679 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5680 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5681 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5682 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5683 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5684 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5685 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5686 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5687 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5688 if (!(t->flags & SN_ERR_MASK))
5689 t->flags |= SN_ERR_PRXCOND;
5690 if (!(t->flags & SN_FINST_MASK))
5691 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5692 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5693 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5694 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5695
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5696 /* has the response been denied ? */
5697 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5698 if (objt_server(t->target))
5699 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5700
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5701 t->be->be_counters.denied_resp++;
5702 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5703 if (t->listener->counters)
5704 t->listener->counters->denied_resp++;
5705
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5706 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5707 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5708
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5709 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5710 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5711 if (txn->status < 200)
5712 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5713 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5714 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]5715 ret = acl_pass(ret);
5716 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5717 ret = !ret;
5718 if (!ret)
5719 continue;
5720 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5721 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5722 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5723 }
5724
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5725 /* check whether we're already working on the frontend */
5726 if (cur_proxy == t->fe)
5727 break;
5728 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5729 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5730
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5731 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5732 * We may be facing a 100-continue response, in which case this
5733 * is not the right response, and we're waiting for the next one.
5734 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5735 * next one.
5736 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5737 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5738 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5739 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5740 msg->msg_state = HTTP_MSG_RPBEFORE;
5741 txn->status = 0;
5742 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5743 return 1;
5744 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5745 else if (unlikely(txn->status < 200))
5746 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5747
5748 /* we don't have any 1xx status code now */
5749
5750 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5751 * 4: check for server cookie.
5752 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5753 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5754 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5755 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5756
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5757
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5758 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5759 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5760 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5761 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]5762 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5763
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5764 /*
5765 * 6: add server cookie in the response if needed
5766 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5767 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5768 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5769 (!(t->flags & SN_DIRECT) ||
5770 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5771 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5772 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5773 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5774 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5775 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5776 /* the server is known, it's not the one the client requested, or the
5777 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5778 * insert a set-cookie here, except if we want to insert only on POST
5779 * requests and this one isn't. Note that servers which don't have cookies
5780 * (eg: some backup servers) will return a full cookie removal request.
5781 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5782 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5783 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5784 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5785 t->be->cookie_name);
5786 }
5787 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5788 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]5789
5790 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5791 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5792 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5793 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5794 trash.len += 5;
5795
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5796 if (t->be->cookie_maxlife) {
5797 /* emit first_date, which is either the original one or
5798 * the current date.
5799 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5800 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5801 s30tob64(txn->cookie_first_date ?
5802 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5803 (date.tv_sec+3) >> 2, trash.str + trash.len);
5804 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5805 }
5806 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5807 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5808 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5809
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5810 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5811 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5812
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5813 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5814 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5815
5816 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5817 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5818
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5819 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]5820 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5821
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5822 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5823 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5824 /* the server did not change, only the date was updated */
5825 txn->flags |= TX_SCK_UPDATED;
5826 else
5827 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5828
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5829 /* Here, we will tell an eventual cache on the client side that we don't
5830 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5831 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5832 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5833 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5834 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5835
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5836 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5837
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5838 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5839 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5840 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5841 }
5842 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5843
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5844 /*
5845 * 7: check if result will be cacheable with a cookie.
5846 * We'll block the response if security checks have caught
5847 * nasty things such as a cacheable cookie.
5848 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5849 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5850 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5851 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5852
5853 /* we're in presence of a cacheable response containing
5854 * a set-cookie header. We'll block it as requested by
5855 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5856 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5857 if (objt_server(t->target))
5858 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5859
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5860 t->be->be_counters.denied_resp++;
5861 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5862 if (t->listener->counters)
5863 t->listener->counters->denied_resp++;
5864
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5865 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5866 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5867 send_log(t->be, LOG_ALERT,
5868 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5869 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5870 goto return_srv_prx_502;
5871 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5872
5873 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5874 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5875 * If an "Upgrade" token is found, the header is left untouched in order
5876 * not to have to deal with some client bugs : some of them fail an upgrade
5877 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5878 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5879 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5880 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5881 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5882 unsigned int want_flags = 0;
5883
5884 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5885 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5886 /* we want a keep-alive response here. Keep-alive header
5887 * required if either side is not 1.1.
5888 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5889 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5890 want_flags |= TX_CON_KAL_SET;
5891 }
5892 else {
5893 /* we want a close response here. Close header required if
5894 * the server is 1.1, regardless of the client.
5895 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5896 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5897 want_flags |= TX_CON_CLO_SET;
5898 }
5899
5900 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5901 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5902 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5903
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5904 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5905 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5906 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5907 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5908
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5909 /*************************************************************
5910 * OK, that's finished for the headers. We have done what we *
5911 * could. Let's switch to the DATA state. *
5912 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5913
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5914 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5915
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5916 /* if the user wants to log as soon as possible, without counting
5917 * bytes from the server, then this is the right moment. We have
5918 * to temporarily assign bytes_out to log what we currently have.
5919 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5920 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5921 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5922 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5923 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5924 t->logs.bytes_out = 0;
5925 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5926
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5927 /* Note: we must not try to cheat by jumping directly to DATA,
5928 * otherwise we would not let the client side wake up.
5929 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5930
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5931 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5932 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5933 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5934}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5935
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5936/* This function is an analyser which forwards response body (including chunk
5937 * sizes if any). It is called as soon as we must forward, even if we forward
5938 * zero byte. The only situation where it must not be called is when we're in
5939 * tunnel mode and we want to forward till the close. It's used both to forward
5940 * remaining data and to resync after end of body. It expects the msg_state to
5941 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5942 * 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]5943 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5944 * bytes of pending data + the headers if not already done (between sol and sov).
5945 * 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]5946 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5947int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5948{
5949 struct http_txn *txn = &s->txn;
5950 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5951 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5952 static struct buffer *tmpbuf = NULL;
5953 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5954 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5955 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5956
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5957 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5958 return 0;
5959
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5960 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]5961 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5962 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5963 /* Output closed while we were sending data. We must abort and
5964 * wake the other side up.
5965 */
5966 msg->msg_state = HTTP_MSG_ERROR;
5967 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5968 return 1;
5969 }
5970
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5971 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5972 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5973
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5974 /* this is the first time we need the compression buffer */
5975 if (s->comp_algo != NULL && tmpbuf == NULL) {
5976 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5977 goto aborted_xfer; /* no memory */
5978 }
5979
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5980 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5981 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5982 * rep->buf.p still points to the beginning of the message and msg->sol
5983 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5984 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5985 channel_forward(res, msg->sov);
5986 msg->next = 0;
5987 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5988
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5989 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5990 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5991 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5992 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5993 }
5994
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5995 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5996 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5997 if (ret < 0)
5998 goto missing_data; /* not enough spaces in buffers */
5999 compressing = 1;
6000 }
6001
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6002 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6003 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6004 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6005 if (s->comp_algo == NULL) {
6006 bytes = msg->sov - msg->sol;
6007 if (msg->chunk_len || bytes) {
6008 msg->sol = msg->sov;
6009 msg->next -= bytes; /* will be forwarded */
6010 msg->chunk_len += bytes;
6011 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6012 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]6013 }
6014
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6015 switch (msg->msg_state - HTTP_MSG_DATA) {
6016 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6017 if (compressing) {
6018 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
6019 if (ret < 0)
6020 goto aborted_xfer;
6021 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6022
6023 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6024 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6025
6026 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6027 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6028 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6029 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6030 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6031 if (compressing && consumed_data) {
6032 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6033 compressing = 0;
6034 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6035 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6036 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6037 /* fall through for HTTP_MSG_CHUNK_CRLF */
6038
6039 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6040 /* we want the CRLF after the data */
6041
6042 ret = http_skip_chunk_crlf(msg);
6043 if (ret == 0)
6044 goto missing_data;
6045 else if (ret < 0) {
6046 if (msg->err_pos >= 0)
6047 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6048 goto return_bad_res;
6049 }
6050 /* skipping data in buffer for compression */
6051 if (compressing) {
6052 b_adv(res->buf, msg->next);
6053 msg->next = 0;
6054 msg->sov = 0;
6055 msg->sol = 0;
6056 }
6057 /* we're in MSG_CHUNK_SIZE now, fall through */
6058
6059 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6060 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6061 * set ->sov and ->next to point to the body and switch to DATA or
6062 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6063 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6064
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6065 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6066 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6067 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6068 else if (ret < 0) {
6069 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6070 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]6071 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6072 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6073 if (compressing) {
6074 if (likely(msg->chunk_len > 0)) {
6075 /* skipping data if we are in compression mode */
6076 b_adv(res->buf, msg->next);
6077 msg->next = 0;
6078 msg->sov = 0;
6079 msg->sol = 0;
6080 } else {
6081 if (consumed_data) {
6082 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6083 compressing = 0;
6084 }
6085 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6086 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6087 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6088 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6089
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6090 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
6091 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6092 if (ret == 0)
6093 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6094 else if (ret < 0) {
6095 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6096 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]6097 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6098 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]6099 if (s->comp_algo != NULL) {
6100 /* forwarding trailers */
6101 channel_forward(res, msg->next);
6102 msg->next = 0;
6103 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]6104 /* we're in HTTP_MSG_DONE now, but we might still have
6105 * some data pending, so let's loop over once.
6106 */
6107 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6108
6109 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6110 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6111
6112 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6113 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6114 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6115 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6116 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6117 if (http_resync_states(s)) {
6118 http_silent_debug(__LINE__, s);
6119 /* some state changes occurred, maybe the analyser
6120 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6121 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6122 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6123 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6124 /* response errors are most likely due to
6125 * the client aborting the transfer.
6126 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6127 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6128 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6129 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6130 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6131 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6132 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6133 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6134 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6135 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6136 }
6137 }
6138
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6139 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6140 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6141 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6142 compressing = 0;
6143 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6144
6145 if (res->flags & CF_SHUTW)
6146 goto aborted_xfer;
6147
6148 /* stop waiting for data if the input is closed before the end. If the
6149 * client side was already closed, it means that the client has aborted,
6150 * so we don't want to count this as a server abort. Otherwise it's a
6151 * server abort.
6152 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6153 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6154 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6155 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6156 if (!(s->flags & SN_ERR_MASK))
6157 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6158 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6159 if (objt_server(s->target))
6160 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6161 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6162 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6163
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6164 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6165 if (!s->req->analysers)
6166 goto return_bad_res;
6167
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6168 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6169 if (s->comp_algo == NULL) {
6170 bytes = msg->sov - msg->sol;
6171 if (msg->chunk_len || bytes) {
6172 msg->sol = msg->sov;
6173 msg->next -= bytes; /* will be forwarded */
6174 msg->chunk_len += bytes;
6175 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6176 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6177 }
6178
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6179 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6180 * 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]6181 * Similarly, with keep-alive on the client side, we don't want to forward a
6182 * close.
6183 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6184 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6185 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6186 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6187 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6188
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6189 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6190 * 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]6191 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6192 * modes are already handled by the stream sock layer. We must not do
6193 * this in content-length mode because it could present the MSG_MORE
6194 * flag with the last block of forwarded data, which would cause an
6195 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6196 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6197 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6198 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6199
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6200 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6201 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6202 return 0;
6203
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6204 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6205 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6206 if (objt_server(s->target))
6207 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6208
6209 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6210 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6211 /* don't send any error message as we're in the body */
6212 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6213 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6214 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]6215 if (objt_server(s->target))
6216 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6217
6218 if (!(s->flags & SN_ERR_MASK))
6219 s->flags |= SN_ERR_PRXCOND;
6220 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6221 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6222 return 0;
6223
6224 aborted_xfer:
6225 txn->rsp.msg_state = HTTP_MSG_ERROR;
6226 /* don't send any error message as we're in the body */
6227 stream_int_retnclose(res->cons, NULL);
6228 res->analysers = 0;
6229 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6230
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6231 s->fe->fe_counters.cli_aborts++;
6232 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6233 if (objt_server(s->target))
6234 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6235
6236 if (!(s->flags & SN_ERR_MASK))
6237 s->flags |= SN_ERR_CLICL;
6238 if (!(s->flags & SN_FINST_MASK))
6239 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6240 return 0;
6241}
6242
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6243/* Iterate the same filter through all request headers.
6244 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6245 * Since it can manage the switch to another backend, it updates the per-proxy
6246 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6247 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6248int 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]6249{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6250 char term;
6251 char *cur_ptr, *cur_end, *cur_next;
6252 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6253 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6254 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6255 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6256
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6257 last_hdr = 0;
6258
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6259 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6260 old_idx = 0;
6261
6262 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6263 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6264 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6265 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6266 (exp->action == ACT_ALLOW ||
6267 exp->action == ACT_DENY ||
6268 exp->action == ACT_TARPIT))
6269 return 0;
6270
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6271 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6272 if (!cur_idx)
6273 break;
6274
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6275 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6276 cur_ptr = cur_next;
6277 cur_end = cur_ptr + cur_hdr->len;
6278 cur_next = cur_end + cur_hdr->cr + 1;
6279
6280 /* Now we have one header between cur_ptr and cur_end,
6281 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6282 */
6283
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6284 /* The annoying part is that pattern matching needs
6285 * that we modify the contents to null-terminate all
6286 * strings before testing them.
6287 */
6288
6289 term = *cur_end;
6290 *cur_end = '\0';
6291
6292 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6293 switch (exp->action) {
6294 case ACT_SETBE:
6295 /* It is not possible to jump a second time.
6296 * FIXME: should we return an HTTP/500 here so that
6297 * the admin knows there's a problem ?
6298 */
6299 if (t->be != t->fe)
6300 break;
6301
6302 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6303 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6304 last_hdr = 1;
6305 break;
6306
6307 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6308 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6309 last_hdr = 1;
6310 break;
6311
6312 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6313 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6314 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6315
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6316 t->fe->fe_counters.denied_req++;
6317 if (t->fe != t->be)
6318 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6319 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6320 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6321
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6322 break;
6323
6324 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6325 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6326 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6327
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6328 t->fe->fe_counters.denied_req++;
6329 if (t->fe != t->be)
6330 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6331 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6332 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6333
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6334 break;
6335
6336 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6337 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6338 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6339 /* FIXME: if the user adds a newline in the replacement, the
6340 * index will not be recalculated for now, and the new line
6341 * will not be counted as a new header.
6342 */
6343
6344 cur_end += delta;
6345 cur_next += delta;
6346 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6347 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6348 break;
6349
6350 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6351 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6352 cur_next += delta;
6353
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6354 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6355 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6356 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6357 cur_hdr->len = 0;
6358 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6359 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6360 break;
6361
6362 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6363 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6364 if (cur_end)
6365 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6366
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6367 /* keep the link from this header to next one in case of later
6368 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6369 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6370 old_idx = cur_idx;
6371 }
6372 return 0;
6373}
6374
6375
6376/* Apply the filter to the request line.
6377 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6378 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6379 * Since it can manage the switch to another backend, it updates the per-proxy
6380 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6381 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6382int 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]6383{
6384 char term;
6385 char *cur_ptr, *cur_end;
6386 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6387 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6388 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6389
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6390 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6391 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6392 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6393 (exp->action == ACT_ALLOW ||
6394 exp->action == ACT_DENY ||
6395 exp->action == ACT_TARPIT))
6396 return 0;
6397 else if (exp->action == ACT_REMOVE)
6398 return 0;
6399
6400 done = 0;
6401
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6402 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6403 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6404
6405 /* Now we have the request line between cur_ptr and cur_end */
6406
6407 /* The annoying part is that pattern matching needs
6408 * that we modify the contents to null-terminate all
6409 * strings before testing them.
6410 */
6411
6412 term = *cur_end;
6413 *cur_end = '\0';
6414
6415 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6416 switch (exp->action) {
6417 case ACT_SETBE:
6418 /* It is not possible to jump a second time.
6419 * FIXME: should we return an HTTP/500 here so that
6420 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6421 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6422 if (t->be != t->fe)
6423 break;
6424
6425 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6426 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6427 done = 1;
6428 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6430 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6431 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6432 done = 1;
6433 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6434
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6435 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6436 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6437
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6438 t->fe->fe_counters.denied_req++;
6439 if (t->fe != t->be)
6440 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6441 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6442 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6443
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6444 done = 1;
6445 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6446
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6447 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6448 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6449
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6450 t->fe->fe_counters.denied_req++;
6451 if (t->fe != t->be)
6452 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6453 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6454 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6456 done = 1;
6457 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6458
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6459 case ACT_REPLACE:
6460 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6461 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6462 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6463 /* FIXME: if the user adds a newline in the replacement, the
6464 * index will not be recalculated for now, and the new line
6465 * will not be counted as a new header.
6466 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6467
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6468 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6469 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6470 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6471 HTTP_MSG_RQMETH,
6472 cur_ptr, cur_end + 1,
6473 NULL, NULL);
6474 if (unlikely(!cur_end))
6475 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6476
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6477 /* we have a full request and we know that we have either a CR
6478 * or an LF at <ptr>.
6479 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6480 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6481 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]6482 /* there is no point trying this regex on headers */
6483 return 1;
6484 }
6485 }
6486 *cur_end = term; /* restore the string terminator */
6487 return done;
6488}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6489
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6490
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6492/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6493 * 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]6494 * 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]6495 * unparsable request. Since it can manage the switch to another backend, it
6496 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6497 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6498int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6499{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6500 struct http_txn *txn = &s->txn;
6501 struct hdr_exp *exp;
6502
6503 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6504 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6505
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6506 /*
6507 * The interleaving of transformations and verdicts
6508 * makes it difficult to decide to continue or stop
6509 * the evaluation.
6510 */
6511
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6512 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6513 break;
6514
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6515 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6516 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6517 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6518 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6519
6520 /* if this filter had a condition, evaluate it now and skip to
6521 * next filter if the condition does not match.
6522 */
6523 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6524 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]6525 ret = acl_pass(ret);
6526 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6527 ret = !ret;
6528
6529 if (!ret)
6530 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6531 }
6532
6533 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6534 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6535 if (unlikely(ret < 0))
6536 return -1;
6537
6538 if (likely(ret == 0)) {
6539 /* The filter did not match the request, it can be
6540 * iterated through all headers.
6541 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6542 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6543 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6544 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6545 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6546}
6547
6548
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6549
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6550/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6551 * Try to retrieve the server associated to the appsession.
6552 * If the server is found, it's assigned to the session.
6553 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6554void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6555 struct http_txn *txn = &t->txn;
6556 appsess *asession = NULL;
6557 char *sessid_temp = NULL;
6558
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6559 if (len > t->be->appsession_len) {
6560 len = t->be->appsession_len;
6561 }
6562
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6563 if (t->be->options2 & PR_O2_AS_REQL) {
6564 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6565 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6566 /* 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]6567 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6568 }
6569
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6570 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6571 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6572 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6573 return;
6574 }
6575
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6576 memcpy(txn->sessid, buf, len);
6577 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6578 }
6579
6580 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6581 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6582 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6583 return;
6584 }
6585
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6586 memcpy(sessid_temp, buf, len);
6587 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6588
6589 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6590 /* free previously allocated memory */
6591 pool_free2(apools.sessid, sessid_temp);
6592
6593 if (asession != NULL) {
6594 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6595 if (!(t->be->options2 & PR_O2_AS_REQL))
6596 asession->request_count++;
6597
6598 if (asession->serverid != NULL) {
6599 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6600
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6601 while (srv) {
6602 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6603 if ((srv->state & SRV_RUNNING) ||
6604 (t->be->options & PR_O_PERSIST) ||
6605 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6606 /* we found the server and it's usable */
6607 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6608 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6609 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6610 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6611
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6612 break;
6613 } else {
6614 txn->flags &= ~TX_CK_MASK;
6615 txn->flags |= TX_CK_DOWN;
6616 }
6617 }
6618 srv = srv->next;
6619 }
6620 }
6621 }
6622}
6623
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6624/* Find the end of a cookie value contained between <s> and <e>. It works the
6625 * same way as with headers above except that the semi-colon also ends a token.
6626 * See RFC2965 for more information. Note that it requires a valid header to
6627 * return a valid result.
6628 */
6629char *find_cookie_value_end(char *s, const char *e)
6630{
6631 int quoted, qdpair;
6632
6633 quoted = qdpair = 0;
6634 for (; s < e; s++) {
6635 if (qdpair) qdpair = 0;
6636 else if (quoted) {
6637 if (*s == '\\') qdpair = 1;
6638 else if (*s == '"') quoted = 0;
6639 }
6640 else if (*s == '"') quoted = 1;
6641 else if (*s == ',' || *s == ';') return s;
6642 }
6643 return s;
6644}
6645
6646/* Delete a value in a header between delimiters <from> and <next> in buffer
6647 * <buf>. The number of characters displaced is returned, and the pointer to
6648 * the first delimiter is updated if required. The function tries as much as
6649 * possible to respect the following principles :
6650 * - replace <from> delimiter by the <next> one unless <from> points to a
6651 * colon, in which case <next> is simply removed
6652 * - set exactly one space character after the new first delimiter, unless
6653 * there are not enough characters in the block being moved to do so.
6654 * - remove unneeded spaces before the previous delimiter and after the new
6655 * one.
6656 *
6657 * It is the caller's responsibility to ensure that :
6658 * - <from> points to a valid delimiter or the colon ;
6659 * - <next> points to a valid delimiter or the final CR/LF ;
6660 * - there are non-space chars before <from> ;
6661 * - there is a CR/LF at or after <next>.
6662 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6663int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6664{
6665 char *prev = *from;
6666
6667 if (*prev == ':') {
6668 /* We're removing the first value, preserve the colon and add a
6669 * space if possible.
6670 */
6671 if (!http_is_crlf[(unsigned char)*next])
6672 next++;
6673 prev++;
6674 if (prev < next)
6675 *prev++ = ' ';
6676
6677 while (http_is_spht[(unsigned char)*next])
6678 next++;
6679 } else {
6680 /* Remove useless spaces before the old delimiter. */
6681 while (http_is_spht[(unsigned char)*(prev-1)])
6682 prev--;
6683 *from = prev;
6684
6685 /* copy the delimiter and if possible a space if we're
6686 * not at the end of the line.
6687 */
6688 if (!http_is_crlf[(unsigned char)*next]) {
6689 *prev++ = *next++;
6690 if (prev + 1 < next)
6691 *prev++ = ' ';
6692 while (http_is_spht[(unsigned char)*next])
6693 next++;
6694 }
6695 }
6696 return buffer_replace2(buf, prev, next, NULL, 0);
6697}
6698
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6699/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6700 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6701 * desirable to call it only when needed. This code is quite complex because
6702 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6703 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6704 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6705void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6706{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6707 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6708 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6709 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6710 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6711 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6712
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6713 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6714 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6715 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6716
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6717 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6718 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6719 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6720
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6721 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6722 hdr_beg = hdr_next;
6723 hdr_end = hdr_beg + cur_hdr->len;
6724 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6725
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6726 /* We have one full header between hdr_beg and hdr_end, and the
6727 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6728 * "Cookie:" headers.
6729 */
6730
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6731 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6732 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6733 old_idx = cur_idx;
6734 continue;
6735 }
6736
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6737 del_from = NULL; /* nothing to be deleted */
6738 preserve_hdr = 0; /* assume we may kill the whole header */
6739
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6740 /* Now look for cookies. Conforming to RFC2109, we have to support
6741 * attributes whose name begin with a '$', and associate them with
6742 * the right cookie, if we want to delete this cookie.
6743 * So there are 3 cases for each cookie read :
6744 * 1) it's a special attribute, beginning with a '$' : ignore it.
6745 * 2) it's a server id cookie that we *MAY* want to delete : save
6746 * some pointers on it (last semi-colon, beginning of cookie...)
6747 * 3) it's an application cookie : we *MAY* have to delete a previous
6748 * "special" cookie.
6749 * At the end of loop, if a "special" cookie remains, we may have to
6750 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6751 * *MUST* delete it.
6752 *
6753 * Note: RFC2965 is unclear about the processing of spaces around
6754 * the equal sign in the ATTR=VALUE form. A careful inspection of
6755 * the RFC explicitly allows spaces before it, and not within the
6756 * tokens (attrs or values). An inspection of RFC2109 allows that
6757 * too but section 10.1.3 lets one think that spaces may be allowed
6758 * after the equal sign too, resulting in some (rare) buggy
6759 * implementations trying to do that. So let's do what servers do.
6760 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6761 * allowed quoted strings in values, with any possible character
6762 * after a backslash, including control chars and delimitors, which
6763 * causes parsing to become ambiguous. Browsers also allow spaces
6764 * within values even without quotes.
6765 *
6766 * We have to keep multiple pointers in order to support cookie
6767 * removal at the beginning, middle or end of header without
6768 * corrupting the header. All of these headers are valid :
6769 *
6770 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6771 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6772 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6773 * | | | | | | | | |
6774 * | | | | | | | | hdr_end <--+
6775 * | | | | | | | +--> next
6776 * | | | | | | +----> val_end
6777 * | | | | | +-----------> val_beg
6778 * | | | | +--------------> equal
6779 * | | | +----------------> att_end
6780 * | | +---------------------> att_beg
6781 * | +--------------------------> prev
6782 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6783 */
6784
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6785 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6786 /* Iterate through all cookies on this line */
6787
6788 /* find att_beg */
6789 att_beg = prev + 1;
6790 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6791 att_beg++;
6792
6793 /* find att_end : this is the first character after the last non
6794 * space before the equal. It may be equal to hdr_end.
6795 */
6796 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6797
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6798 while (equal < hdr_end) {
6799 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6800 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6801 if (http_is_spht[(unsigned char)*equal++])
6802 continue;
6803 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6804 }
6805
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6806 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6807 * is between <att_beg> and <equal>, both may be identical.
6808 */
6809
6810 /* look for end of cookie if there is an equal sign */
6811 if (equal < hdr_end && *equal == '=') {
6812 /* look for the beginning of the value */
6813 val_beg = equal + 1;
6814 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6815 val_beg++;
6816
6817 /* find the end of the value, respecting quotes */
6818 next = find_cookie_value_end(val_beg, hdr_end);
6819
6820 /* make val_end point to the first white space or delimitor after the value */
6821 val_end = next;
6822 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6823 val_end--;
6824 } else {
6825 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6826 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6827
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6828 /* We have nothing to do with attributes beginning with '$'. However,
6829 * they will automatically be removed if a header before them is removed,
6830 * since they're supposed to be linked together.
6831 */
6832 if (*att_beg == '$')
6833 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6834
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6835 /* Ignore cookies with no equal sign */
6836 if (equal == next) {
6837 /* This is not our cookie, so we must preserve it. But if we already
6838 * scheduled another cookie for removal, we cannot remove the
6839 * complete header, but we can remove the previous block itself.
6840 */
6841 preserve_hdr = 1;
6842 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6843 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6844 val_end += delta;
6845 next += delta;
6846 hdr_end += delta;
6847 hdr_next += delta;
6848 cur_hdr->len += delta;
6849 http_msg_move_end(&txn->req, delta);
6850 prev = del_from;
6851 del_from = NULL;
6852 }
6853 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6854 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6855
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6856 /* if there are spaces around the equal sign, we need to
6857 * strip them otherwise we'll get trouble for cookie captures,
6858 * or even for rewrites. Since this happens extremely rarely,
6859 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6860 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6861 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6862 int stripped_before = 0;
6863 int stripped_after = 0;
6864
6865 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6866 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6867 equal += stripped_before;
6868 val_beg += stripped_before;
6869 }
6870
6871 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6872 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6873 val_beg += stripped_after;
6874 stripped_before += stripped_after;
6875 }
6876
6877 val_end += stripped_before;
6878 next += stripped_before;
6879 hdr_end += stripped_before;
6880 hdr_next += stripped_before;
6881 cur_hdr->len += stripped_before;
6882 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6883 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6884 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6885
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6886 /* First, let's see if we want to capture this cookie. We check
6887 * that we don't already have a client side cookie, because we
6888 * can only capture one. Also as an optimisation, we ignore
6889 * cookies shorter than the declared name.
6890 */
6891 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6892 (val_end - att_beg >= t->fe->capture_namelen) &&
6893 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6894 int log_len = val_end - att_beg;
6895
6896 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6897 Alert("HTTP logging : out of memory.\n");
6898 } else {
6899 if (log_len > t->fe->capture_len)
6900 log_len = t->fe->capture_len;
6901 memcpy(txn->cli_cookie, att_beg, log_len);
6902 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6903 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6904 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6905
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6906 /* Persistence cookies in passive, rewrite or insert mode have the
6907 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6908 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6909 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6910 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6911 * For cookies in prefix mode, the form is :
6912 *
6913 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6914 */
6915 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6916 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6917 struct server *srv = t->be->srv;
6918 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6919
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6920 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6921 * have the server ID between val_beg and delim, and the original cookie between
6922 * delim+1 and val_end. Otherwise, delim==val_end :
6923 *
6924 * Cookie: NAME=SRV; # in all but prefix modes
6925 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6926 * | || || | |+-> next
6927 * | || || | +--> val_end
6928 * | || || +---------> delim
6929 * | || |+------------> val_beg
6930 * | || +-------------> att_end = equal
6931 * | |+-----------------> att_beg
6932 * | +------------------> prev
6933 * +-------------------------> hdr_beg
6934 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6935
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6936 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6937 for (delim = val_beg; delim < val_end; delim++)
6938 if (*delim == COOKIE_DELIM)
6939 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6940 } else {
6941 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6942 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6943 /* Now check if the cookie contains a date field, which would
6944 * appear after a vertical bar ('|') just after the server name
6945 * and before the delimiter.
6946 */
6947 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6948 if (vbar1) {
6949 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6950 * right is the last seen date. It is a base64 encoded
6951 * 30-bit value representing the UNIX date since the
6952 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6953 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6954 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6955 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6956 if (val_end - vbar1 >= 5) {
6957 val = b64tos30(vbar1);
6958 if (val > 0)
6959 txn->cookie_last_date = val << 2;
6960 }
6961 /* look for a second vertical bar */
6962 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6963 if (vbar1 && (val_end - vbar1 > 5)) {
6964 val = b64tos30(vbar1 + 1);
6965 if (val > 0)
6966 txn->cookie_first_date = val << 2;
6967 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6968 }
6969 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6970
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6971 /* if the cookie has an expiration date and the proxy wants to check
6972 * it, then we do that now. We first check if the cookie is too old,
6973 * then only if it has expired. We detect strict overflow because the
6974 * time resolution here is not great (4 seconds). Cookies with dates
6975 * in the future are ignored if their offset is beyond one day. This
6976 * allows an admin to fix timezone issues without expiring everyone
6977 * and at the same time avoids keeping unwanted side effects for too
6978 * long.
6979 */
6980 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6981 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6982 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6983 txn->flags &= ~TX_CK_MASK;
6984 txn->flags |= TX_CK_OLD;
6985 delim = val_beg; // let's pretend we have not found the cookie
6986 txn->cookie_first_date = 0;
6987 txn->cookie_last_date = 0;
6988 }
6989 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6990 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6991 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6992 txn->flags &= ~TX_CK_MASK;
6993 txn->flags |= TX_CK_EXPIRED;
6994 delim = val_beg; // let's pretend we have not found the cookie
6995 txn->cookie_first_date = 0;
6996 txn->cookie_last_date = 0;
6997 }
6998
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6999 /* Here, we'll look for the first running server which supports the cookie.
7000 * This allows to share a same cookie between several servers, for example
7001 * to dedicate backup servers to specific servers only.
7002 * However, to prevent clients from sticking to cookie-less backup server
7003 * when they have incidentely learned an empty cookie, we simply ignore
7004 * empty cookies and mark them as invalid.
7005 * The same behaviour is applied when persistence must be ignored.
7006 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]7007 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7008 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7009
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7010 while (srv) {
7011 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7012 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
7013 if ((srv->state & SRV_RUNNING) ||
7014 (t->be->options & PR_O_PERSIST) ||
7015 (t->flags & SN_FORCE_PRST)) {
7016 /* we found the server and we can use it */
7017 txn->flags &= ~TX_CK_MASK;
7018 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
7019 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7020 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7021 break;
7022 } else {
7023 /* we found a server, but it's down,
7024 * mark it as such and go on in case
7025 * another one is available.
7026 */
7027 txn->flags &= ~TX_CK_MASK;
7028 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7029 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7030 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7031 srv = srv->next;
7032 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7033
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7034 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7035 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7036 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7037 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
7038 txn->flags |= TX_CK_UNUSED;
7039 else
7040 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7041 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7042
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7043 /* depending on the cookie mode, we may have to either :
7044 * - delete the complete cookie if we're in insert+indirect mode, so that
7045 * the server never sees it ;
7046 * - remove the server id from the cookie value, and tag the cookie as an
7047 * application cookie so that it does not get accidentely removed later,
7048 * if we're in cookie prefix mode
7049 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7050 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7051 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7052
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7053 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7054 val_end += delta;
7055 next += delta;
7056 hdr_end += delta;
7057 hdr_next += delta;
7058 cur_hdr->len += delta;
7059 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7060
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7061 del_from = NULL;
7062 preserve_hdr = 1; /* we want to keep this cookie */
7063 }
7064 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7065 (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]7066 del_from = prev;
7067 }
7068 } else {
7069 /* This is not our cookie, so we must preserve it. But if we already
7070 * scheduled another cookie for removal, we cannot remove the
7071 * complete header, but we can remove the previous block itself.
7072 */
7073 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7074
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7075 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7076 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7077 if (att_beg >= del_from)
7078 att_beg += delta;
7079 if (att_end >= del_from)
7080 att_end += delta;
7081 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7082 val_end += delta;
7083 next += delta;
7084 hdr_end += delta;
7085 hdr_next += delta;
7086 cur_hdr->len += delta;
7087 http_msg_move_end(&txn->req, delta);
7088 prev = del_from;
7089 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7090 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7091 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7092
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7093 /* Look for the appsession cookie unless persistence must be ignored */
7094 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
7095 int cmp_len, value_len;
7096 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7097
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7098 if (t->be->options2 & PR_O2_AS_PFX) {
7099 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7100 value_begin = att_beg + t->be->appsession_name_len;
7101 value_len = val_end - att_beg - t->be->appsession_name_len;
7102 } else {
7103 cmp_len = att_end - att_beg;
7104 value_begin = val_beg;
7105 value_len = val_end - val_beg;
7106 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7107
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7108 /* let's see if the cookie is our appcookie */
7109 if (cmp_len == t->be->appsession_name_len &&
7110 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
7111 manage_client_side_appsession(t, value_begin, value_len);
7112 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7113 }
7114
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7115 /* continue with next cookie on this header line */
7116 att_beg = next;
7117 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7118
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7119 /* There are no more cookies on this line.
7120 * We may still have one (or several) marked for deletion at the
7121 * end of the line. We must do this now in two ways :
7122 * - if some cookies must be preserved, we only delete from the
7123 * mark to the end of line ;
7124 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7125 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7126 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7127 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7128 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7129 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7130 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7131 cur_hdr->len += delta;
7132 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7133 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7134
7135 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7136 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7137 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7138 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7139 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7140 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7141 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7142 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7143 }
7144
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7145 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7146 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7147 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7148}
7149
7150
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7151/* Iterate the same filter through all response headers contained in <rtr>.
7152 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7153 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7154int 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]7155{
7156 char term;
7157 char *cur_ptr, *cur_end, *cur_next;
7158 int cur_idx, old_idx, last_hdr;
7159 struct http_txn *txn = &t->txn;
7160 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7161 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7162
7163 last_hdr = 0;
7164
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7165 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7166 old_idx = 0;
7167
7168 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7169 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7170 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7171 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7172 (exp->action == ACT_ALLOW ||
7173 exp->action == ACT_DENY))
7174 return 0;
7175
7176 cur_idx = txn->hdr_idx.v[old_idx].next;
7177 if (!cur_idx)
7178 break;
7179
7180 cur_hdr = &txn->hdr_idx.v[cur_idx];
7181 cur_ptr = cur_next;
7182 cur_end = cur_ptr + cur_hdr->len;
7183 cur_next = cur_end + cur_hdr->cr + 1;
7184
7185 /* Now we have one header between cur_ptr and cur_end,
7186 * and the next header starts at cur_next.
7187 */
7188
7189 /* The annoying part is that pattern matching needs
7190 * that we modify the contents to null-terminate all
7191 * strings before testing them.
7192 */
7193
7194 term = *cur_end;
7195 *cur_end = '\0';
7196
7197 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7198 switch (exp->action) {
7199 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7200 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7201 last_hdr = 1;
7202 break;
7203
7204 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7205 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7206 last_hdr = 1;
7207 break;
7208
7209 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7210 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7211 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7212 /* FIXME: if the user adds a newline in the replacement, the
7213 * index will not be recalculated for now, and the new line
7214 * will not be counted as a new header.
7215 */
7216
7217 cur_end += delta;
7218 cur_next += delta;
7219 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7220 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7221 break;
7222
7223 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7224 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7225 cur_next += delta;
7226
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7227 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7228 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7229 txn->hdr_idx.used--;
7230 cur_hdr->len = 0;
7231 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7232 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7233 break;
7234
7235 }
7236 }
7237 if (cur_end)
7238 *cur_end = term; /* restore the string terminator */
7239
7240 /* keep the link from this header to next one in case of later
7241 * removal of next header.
7242 */
7243 old_idx = cur_idx;
7244 }
7245 return 0;
7246}
7247
7248
7249/* Apply the filter to the status line in the response buffer <rtr>.
7250 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7251 * or -1 if a replacement resulted in an invalid status line.
7252 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7253int 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]7254{
7255 char term;
7256 char *cur_ptr, *cur_end;
7257 int done;
7258 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7259 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7260
7261
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7262 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7263 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7264 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7265 (exp->action == ACT_ALLOW ||
7266 exp->action == ACT_DENY))
7267 return 0;
7268 else if (exp->action == ACT_REMOVE)
7269 return 0;
7270
7271 done = 0;
7272
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7273 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7274 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7275
7276 /* Now we have the status line between cur_ptr and cur_end */
7277
7278 /* The annoying part is that pattern matching needs
7279 * that we modify the contents to null-terminate all
7280 * strings before testing them.
7281 */
7282
7283 term = *cur_end;
7284 *cur_end = '\0';
7285
7286 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7287 switch (exp->action) {
7288 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7289 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7290 done = 1;
7291 break;
7292
7293 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7294 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7295 done = 1;
7296 break;
7297
7298 case ACT_REPLACE:
7299 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7300 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7301 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7302 /* FIXME: if the user adds a newline in the replacement, the
7303 * index will not be recalculated for now, and the new line
7304 * will not be counted as a new header.
7305 */
7306
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7307 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7308 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7309 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7310 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7311 cur_ptr, cur_end + 1,
7312 NULL, NULL);
7313 if (unlikely(!cur_end))
7314 return -1;
7315
7316 /* we have a full respnse and we know that we have either a CR
7317 * or an LF at <ptr>.
7318 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7319 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]7320 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]7321 /* there is no point trying this regex on headers */
7322 return 1;
7323 }
7324 }
7325 *cur_end = term; /* restore the string terminator */
7326 return done;
7327}
7328
7329
7330
7331/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7332 * 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]7333 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7334 * unparsable response.
7335 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7336int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7337{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7338 struct http_txn *txn = &s->txn;
7339 struct hdr_exp *exp;
7340
7341 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7342 int ret;
7343
7344 /*
7345 * The interleaving of transformations and verdicts
7346 * makes it difficult to decide to continue or stop
7347 * the evaluation.
7348 */
7349
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7350 if (txn->flags & TX_SVDENY)
7351 break;
7352
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7353 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7354 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7355 exp->action == ACT_PASS)) {
7356 exp = exp->next;
7357 continue;
7358 }
7359
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7360 /* if this filter had a condition, evaluate it now and skip to
7361 * next filter if the condition does not match.
7362 */
7363 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7364 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]7365 ret = acl_pass(ret);
7366 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7367 ret = !ret;
7368 if (!ret)
7369 continue;
7370 }
7371
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7372 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7373 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7374 if (unlikely(ret < 0))
7375 return -1;
7376
7377 if (likely(ret == 0)) {
7378 /* The filter did not match the response, it can be
7379 * iterated through all headers.
7380 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7381 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7382 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7383 }
7384 return 0;
7385}
7386
7387
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7388/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7389 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7390 * desirable to call it only when needed. This function is also used when we
7391 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7392 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7393void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7394{
7395 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7396 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7397 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7398 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7399 char *hdr_beg, *hdr_end, *hdr_next;
7400 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7401
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7402 /* Iterate through the headers.
7403 * we start with the start line.
7404 */
7405 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7406 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7407
7408 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7409 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7410 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7411
7412 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7413 hdr_beg = hdr_next;
7414 hdr_end = hdr_beg + cur_hdr->len;
7415 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7416
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7417 /* We have one full header between hdr_beg and hdr_end, and the
7418 * next header starts at hdr_next. We're only interested in
7419 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7420 */
7421
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7422 is_cookie2 = 0;
7423 prev = hdr_beg + 10;
7424 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7425 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7426 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7427 if (!val) {
7428 old_idx = cur_idx;
7429 continue;
7430 }
7431 is_cookie2 = 1;
7432 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7433 }
7434
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7435 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7436 * <prev> points to the colon.
7437 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7438 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7439
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7440 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7441 * check-cache is enabled) and we are not interested in checking
7442 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7443 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7444 if (t->be->cookie_name == NULL &&
7445 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7446 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7447 return;
7448
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7449 /* OK so now we know we have to process this response cookie.
7450 * The format of the Set-Cookie header is slightly different
7451 * from the format of the Cookie header in that it does not
7452 * support the comma as a cookie delimiter (thus the header
7453 * cannot be folded) because the Expires attribute described in
7454 * the original Netscape's spec may contain an unquoted date
7455 * with a comma inside. We have to live with this because
7456 * many browsers don't support Max-Age and some browsers don't
7457 * support quoted strings. However the Set-Cookie2 header is
7458 * clean.
7459 *
7460 * We have to keep multiple pointers in order to support cookie
7461 * removal at the beginning, middle or end of header without
7462 * corrupting the header (in case of set-cookie2). A special
7463 * pointer, <scav> points to the beginning of the set-cookie-av
7464 * fields after the first semi-colon. The <next> pointer points
7465 * either to the end of line (set-cookie) or next unquoted comma
7466 * (set-cookie2). All of these headers are valid :
7467 *
7468 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7469 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7470 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7471 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7472 * | | | | | | | | | |
7473 * | | | | | | | | +-> next hdr_end <--+
7474 * | | | | | | | +------------> scav
7475 * | | | | | | +--------------> val_end
7476 * | | | | | +--------------------> val_beg
7477 * | | | | +----------------------> equal
7478 * | | | +------------------------> att_end
7479 * | | +----------------------------> att_beg
7480 * | +------------------------------> prev
7481 * +-----------------------------------------> hdr_beg
7482 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7483
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7484 for (; prev < hdr_end; prev = next) {
7485 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7486
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7487 /* find att_beg */
7488 att_beg = prev + 1;
7489 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7490 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7491
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7492 /* find att_end : this is the first character after the last non
7493 * space before the equal. It may be equal to hdr_end.
7494 */
7495 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7496
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7497 while (equal < hdr_end) {
7498 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7499 break;
7500 if (http_is_spht[(unsigned char)*equal++])
7501 continue;
7502 att_end = equal;
7503 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7504
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7505 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7506 * is between <att_beg> and <equal>, both may be identical.
7507 */
7508
7509 /* look for end of cookie if there is an equal sign */
7510 if (equal < hdr_end && *equal == '=') {
7511 /* look for the beginning of the value */
7512 val_beg = equal + 1;
7513 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7514 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7515
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7516 /* find the end of the value, respecting quotes */
7517 next = find_cookie_value_end(val_beg, hdr_end);
7518
7519 /* make val_end point to the first white space or delimitor after the value */
7520 val_end = next;
7521 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7522 val_end--;
7523 } else {
7524 /* <equal> points to next comma, semi-colon or EOL */
7525 val_beg = val_end = next = equal;
7526 }
7527
7528 if (next < hdr_end) {
7529 /* Set-Cookie2 supports multiple cookies, and <next> points to
7530 * a colon or semi-colon before the end. So skip all attr-value
7531 * pairs and look for the next comma. For Set-Cookie, since
7532 * commas are permitted in values, skip to the end.
7533 */
7534 if (is_cookie2)
7535 next = find_hdr_value_end(next, hdr_end);
7536 else
7537 next = hdr_end;
7538 }
7539
7540 /* Now everything is as on the diagram above */
7541
7542 /* Ignore cookies with no equal sign */
7543 if (equal == val_end)
7544 continue;
7545
7546 /* If there are spaces around the equal sign, we need to
7547 * strip them otherwise we'll get trouble for cookie captures,
7548 * or even for rewrites. Since this happens extremely rarely,
7549 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7550 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7551 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7552 int stripped_before = 0;
7553 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7554
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7555 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7556 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7557 equal += stripped_before;
7558 val_beg += stripped_before;
7559 }
7560
7561 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7562 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7563 val_beg += stripped_after;
7564 stripped_before += stripped_after;
7565 }
7566
7567 val_end += stripped_before;
7568 next += stripped_before;
7569 hdr_end += stripped_before;
7570 hdr_next += stripped_before;
7571 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7572 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7573 }
7574
7575 /* First, let's see if we want to capture this cookie. We check
7576 * that we don't already have a server side cookie, because we
7577 * can only capture one. Also as an optimisation, we ignore
7578 * cookies shorter than the declared name.
7579 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7580 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7581 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7582 (val_end - att_beg >= t->fe->capture_namelen) &&
7583 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7584 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7585 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7586 Alert("HTTP logging : out of memory.\n");
7587 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7588 else {
7589 if (log_len > t->fe->capture_len)
7590 log_len = t->fe->capture_len;
7591 memcpy(txn->srv_cookie, att_beg, log_len);
7592 txn->srv_cookie[log_len] = 0;
7593 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7594 }
7595
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7596 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7597 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7598 if (!(t->flags & SN_IGNORE_PRST) &&
7599 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7600 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7601 /* assume passive cookie by default */
7602 txn->flags &= ~TX_SCK_MASK;
7603 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7604
7605 /* If the cookie is in insert mode on a known server, we'll delete
7606 * this occurrence because we'll insert another one later.
7607 * 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]7608 * a direct access.
7609 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7610 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7611 /* The "preserve" flag was set, we don't want to touch the
7612 * server's cookie.
7613 */
7614 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7615 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7616 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7617 /* this cookie must be deleted */
7618 if (*prev == ':' && next == hdr_end) {
7619 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7620 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7621 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7622 txn->hdr_idx.used--;
7623 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7624 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7625 hdr_next += delta;
7626 http_msg_move_end(&txn->rsp, delta);
7627 /* note: while both invalid now, <next> and <hdr_end>
7628 * are still equal, so the for() will stop as expected.
7629 */
7630 } else {
7631 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7632 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7633 next = prev;
7634 hdr_end += delta;
7635 hdr_next += delta;
7636 cur_hdr->len += delta;
7637 http_msg_move_end(&txn->rsp, delta);
7638 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7639 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7640 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7641 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7642 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7643 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7644 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7645 * with this server since we know it.
7646 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7647 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7648 next += delta;
7649 hdr_end += delta;
7650 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7651 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7652 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7653
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7654 txn->flags &= ~TX_SCK_MASK;
7655 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7656 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7657 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7658 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7659 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7660 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7661 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7662 next += delta;
7663 hdr_end += delta;
7664 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7665 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7666 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7667
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7668 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7669 txn->flags &= ~TX_SCK_MASK;
7670 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7671 }
7672 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7673 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7674 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7675 int cmp_len, value_len;
7676 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7677
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7678 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7679 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7680 value_begin = att_beg + t->be->appsession_name_len;
7681 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]7682 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7683 cmp_len = att_end - att_beg;
7684 value_begin = val_beg;
7685 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7686 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7687
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7688 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7689 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7690 /* free a possibly previously allocated memory */
7691 pool_free2(apools.sessid, txn->sessid);
7692
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7693 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7694 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7695 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7696 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7697 return;
7698 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7699 memcpy(txn->sessid, value_begin, value_len);
7700 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7701 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7702 }
7703 /* that's done for this cookie, check the next one on the same
7704 * line when next != hdr_end (only if is_cookie2).
7705 */
7706 }
7707 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7708 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7709 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7710
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7711 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7712 appsess *asession = NULL;
7713 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7714 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7715 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7716 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7717 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7718 Alert("Not enough Memory process_srv():asession:calloc().\n");
7719 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7720 return;
7721 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7722 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7723
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7724 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7725 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7726 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]7727 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7728 return;
7729 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7730 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7731 asession->sessid[t->be->appsession_len] = 0;
7732
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7733 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7734 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7735 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7736 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]7737 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7738 return;
7739 }
7740 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7741 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7742
7743 asession->request_count = 0;
7744 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7745 }
7746
7747 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7748 asession->request_count++;
7749 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7750}
7751
7752
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7753/*
7754 * Check if response is cacheable or not. Updates t->flags.
7755 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7756void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7757{
7758 struct http_txn *txn = &t->txn;
7759 char *p1, *p2;
7760
7761 char *cur_ptr, *cur_end, *cur_next;
7762 int cur_idx;
7763
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7764 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7765 return;
7766
7767 /* Iterate through the headers.
7768 * we start with the start line.
7769 */
7770 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7771 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7772
7773 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7774 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7775 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7776
7777 cur_hdr = &txn->hdr_idx.v[cur_idx];
7778 cur_ptr = cur_next;
7779 cur_end = cur_ptr + cur_hdr->len;
7780 cur_next = cur_end + cur_hdr->cr + 1;
7781
7782 /* We have one full header between cur_ptr and cur_end, and the
7783 * next header starts at cur_next. We're only interested in
7784 * "Cookie:" headers.
7785 */
7786
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7787 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7788 if (val) {
7789 if ((cur_end - (cur_ptr + val) >= 8) &&
7790 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7791 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7792 return;
7793 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7794 }
7795
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7796 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7797 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7798 continue;
7799
7800 /* OK, right now we know we have a cache-control header at cur_ptr */
7801
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7802 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7803
7804 if (p1 >= cur_end) /* no more info */
7805 continue;
7806
7807 /* p1 is at the beginning of the value */
7808 p2 = p1;
7809
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7810 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7811 p2++;
7812
7813 /* we have a complete value between p1 and p2 */
7814 if (p2 < cur_end && *p2 == '=') {
7815 /* we have something of the form no-cache="set-cookie" */
7816 if ((cur_end - p1 >= 21) &&
7817 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7818 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7819 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7820 continue;
7821 }
7822
7823 /* OK, so we know that either p2 points to the end of string or to a comma */
7824 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7825 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7826 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7827 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7828 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7829 return;
7830 }
7831
7832 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7833 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7834 continue;
7835 }
7836 }
7837}
7838
7839
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7840/*
7841 * Try to retrieve a known appsession in the URI, then the associated server.
7842 * If the server is found, it's assigned to the session.
7843 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7844void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7845{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7846 char *end_params, *first_param, *cur_param, *next_param;
7847 char separator;
7848 int value_len;
7849
7850 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7851
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7852 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7853 (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]7854 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7855 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7856
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7857 first_param = NULL;
7858 switch (mode) {
7859 case PR_O2_AS_M_PP:
7860 first_param = memchr(begin, ';', len);
7861 break;
7862 case PR_O2_AS_M_QS:
7863 first_param = memchr(begin, '?', len);
7864 break;
7865 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7866
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7867 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7868 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7869 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7870
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7871 switch (mode) {
7872 case PR_O2_AS_M_PP:
7873 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7874 end_params = (char *) begin + len;
7875 }
7876 separator = ';';
7877 break;
7878 case PR_O2_AS_M_QS:
7879 end_params = (char *) begin + len;
7880 separator = '&';
7881 break;
7882 default:
7883 /* unknown mode, shouldn't happen */
7884 return;
7885 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7886
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7887 cur_param = next_param = end_params;
7888 while (cur_param > first_param) {
7889 cur_param--;
7890 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7891 /* let's see if this is the appsession parameter */
7892 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7893 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7894 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7895 /* Cool... it's the right one */
7896 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7897 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7898 if (value_len > 0) {
7899 manage_client_side_appsession(t, cur_param, value_len);
7900 }
7901 break;
7902 }
7903 next_param = cur_param;
7904 }
7905 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7906#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7907 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7908 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7909#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7910}
7911
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7912/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7913 * 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]7914 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7915 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7916 * 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]7917 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7918 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7919 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7920 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7921int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7922{
7923 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7924 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7925 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7926 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7927
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7928 if (!uri_auth)
7929 return 0;
7930
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7931 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]7932 return 0;
7933
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7934 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7935 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]7936 si->applet.ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7937
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7938 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7939 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7940 return 0;
7941
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7942 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7943 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7944 return 0;
7945
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7946 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7947 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7948 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7949 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7950 break;
7951 }
7952 h++;
7953 }
7954
7955 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7956 h = uri + uri_auth->uri_len;
7957 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7958 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7959 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7960 break;
7961 }
7962 h++;
7963 }
7964 }
7965
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7966 h = uri + uri_auth->uri_len;
7967 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7968 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]7969 si->applet.ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7970 break;
7971 }
7972 h++;
7973 }
7974
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7975 h = uri + uri_auth->uri_len;
7976 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7977 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7978 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7979 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7980 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7981 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7982 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7983 si->applet.ctx.stats.st_code = i;
7984 break;
7985 }
7986 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7987 break;
7988 }
7989 h++;
7990 }
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]7991
7992 si->applet.ctx.stats.scope_str = 0;
7993 si->applet.ctx.stats.scope_len = 0;
7994 h = uri + uri_auth->uri_len;
7995 while (h <= uri + msg->sl.rq.u_l - 8) {
7996 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
7997 int itx = 0;
7998 const char *h2;
7999 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
8000 const char *err;
8001
8002 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
8003 h2 = h;
8004 si->applet.ctx.stats.scope_str = h2 - msg->chn->buf->p;
8005 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
8006 itx++;
8007 h++;
8008 }
8009
8010 if (itx > STAT_SCOPE_TXT_MAXLEN)
8011 itx = STAT_SCOPE_TXT_MAXLEN;
8012 si->applet.ctx.stats.scope_len = itx;
8013
8014 /* scope_txt = search query, si->applet.ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
8015 memcpy(scope_txt, h2, itx);
8016 scope_txt[itx] = '\0';
8017 err = invalid_char(scope_txt);
8018 if (err) {
8019 /* bad char in search text => clear scope */
8020 si->applet.ctx.stats.scope_str = 0;
8021 si->applet.ctx.stats.scope_len = 0;
8022 }
8023 break;
8024 }
8025 h++;
8026 }
8027
8028
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8029 return 1;
8030}
8031
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8032/*
8033 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8034 * By default it tries to report the error position as msg->err_pos. However if
8035 * this one is not set, it will then report msg->next, which is the last known
8036 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8037 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8038 */
8039void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8040 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8041 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8042{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8043 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8044 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8045
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8046 es->len = MIN(chn->buf->i, sizeof(es->buf));
8047 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8048 len1 = MIN(len1, es->len);
8049 len2 = es->len - len1; /* remaining data if buffer wraps */
8050
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8051 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8052 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8053 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8054
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8055 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8056 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8057 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8058 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8059
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8060 es->when = date; // user-visible date
8061 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8062 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8063 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8064 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8065 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8066 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8067 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8068 es->s_flags = s->flags;
8069 es->t_flags = s->txn.flags;
8070 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8071 es->b_out = chn->buf->o;
8072 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8073 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8074 es->m_clen = msg->chunk_len;
8075 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8076}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8077
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8078/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8079 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8080 * performed over the whole headers. Otherwise it must contain a valid header
8081 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8082 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8083 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8084 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8085 * -1. The value fetch stops at commas, so this function is suited for use with
8086 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8087 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8088 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8089unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8090 struct hdr_idx *idx, int occ,
8091 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8092{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8093 struct hdr_ctx local_ctx;
8094 char *ptr_hist[MAX_HDR_HISTORY];
8095 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8096 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8097 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8098
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8099 if (!ctx) {
8100 local_ctx.idx = 0;
8101 ctx = &local_ctx;
8102 }
8103
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8104 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8105 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8106 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8107 occ--;
8108 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8109 *vptr = ctx->line + ctx->val;
8110 *vlen = ctx->vlen;
8111 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8112 }
8113 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8114 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8115 }
8116
8117 /* negative occurrence, we scan all the list then walk back */
8118 if (-occ > MAX_HDR_HISTORY)
8119 return 0;
8120
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8121 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8122 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8123 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8124 len_hist[hist_ptr] = ctx->vlen;
8125 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8126 hist_ptr = 0;
8127 found++;
8128 }
8129 if (-occ > found)
8130 return 0;
8131 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8132 * find occurrence -occ, so we have to check [hist_ptr+occ].
8133 */
8134 hist_ptr += occ;
8135 if (hist_ptr >= MAX_HDR_HISTORY)
8136 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8137 *vptr = ptr_hist[hist_ptr];
8138 *vlen = len_hist[hist_ptr];
8139 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8140}
8141
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8142/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8143 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8144 * performed over the whole headers. Otherwise it must contain a valid header
8145 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8146 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8147 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8148 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8149 * -1. This function differs from http_get_hdr() in that it only returns full
8150 * line header values and does not stop at commas.
8151 * The return value is 0 if nothing was found, or non-zero otherwise.
8152 */
8153unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8154 struct hdr_idx *idx, int occ,
8155 struct hdr_ctx *ctx, char **vptr, int *vlen)
8156{
8157 struct hdr_ctx local_ctx;
8158 char *ptr_hist[MAX_HDR_HISTORY];
8159 int len_hist[MAX_HDR_HISTORY];
8160 unsigned int hist_ptr;
8161 int found;
8162
8163 if (!ctx) {
8164 local_ctx.idx = 0;
8165 ctx = &local_ctx;
8166 }
8167
8168 if (occ >= 0) {
8169 /* search from the beginning */
8170 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8171 occ--;
8172 if (occ <= 0) {
8173 *vptr = ctx->line + ctx->val;
8174 *vlen = ctx->vlen;
8175 return 1;
8176 }
8177 }
8178 return 0;
8179 }
8180
8181 /* negative occurrence, we scan all the list then walk back */
8182 if (-occ > MAX_HDR_HISTORY)
8183 return 0;
8184
8185 found = hist_ptr = 0;
8186 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8187 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8188 len_hist[hist_ptr] = ctx->vlen;
8189 if (++hist_ptr >= MAX_HDR_HISTORY)
8190 hist_ptr = 0;
8191 found++;
8192 }
8193 if (-occ > found)
8194 return 0;
8195 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8196 * find occurrence -occ, so we have to check [hist_ptr+occ].
8197 */
8198 hist_ptr += occ;
8199 if (hist_ptr >= MAX_HDR_HISTORY)
8200 hist_ptr -= MAX_HDR_HISTORY;
8201 *vptr = ptr_hist[hist_ptr];
8202 *vlen = len_hist[hist_ptr];
8203 return 1;
8204}
8205
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8206/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8207 * Print a debug line with a header. Always stop at the first CR or LF char,
8208 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8209 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8210 */
8211void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
8212{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8213 int max;
8214 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]8215 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
8216 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8217
8218 for (max = 0; start + max < end; max++)
8219 if (start[max] == '\r' || start[max] == '\n')
8220 break;
8221
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8222 UBOUND(max, trash.size - trash.len - 3);
8223 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8224 trash.str[trash.len++] = '\n';
8225 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8226}
8227
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8228/*
8229 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8230 * the required fields are properly allocated and that we only need to (re)init
8231 * them. This should be used before processing any new request.
8232 */
8233void http_init_txn(struct session *s)
8234{
8235 struct http_txn *txn = &s->txn;
8236 struct proxy *fe = s->fe;
8237
8238 txn->flags = 0;
8239 txn->status = -1;
8240
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]8241 global.req_count++;
8242
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8243 txn->cookie_first_date = 0;
8244 txn->cookie_last_date = 0;
8245
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8246 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8247 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8248 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8249 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8250 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8251 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8252 txn->req.chunk_len = 0LL;
8253 txn->req.body_len = 0LL;
8254 txn->rsp.chunk_len = 0LL;
8255 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8256 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8257 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8258 txn->req.chn = s->req;
8259 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8260
8261 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8262
8263 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8264 if (fe->options2 & PR_O2_REQBUG_OK)
8265 txn->req.err_pos = -1; /* let buggy requests pass */
8266
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8267 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8268 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8269
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8270 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8271 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8272
8273 if (txn->hdr_idx.v)
8274 hdr_idx_init(&txn->hdr_idx);
8275}
8276
8277/* to be used at the end of a transaction */
8278void http_end_txn(struct session *s)
8279{
8280 struct http_txn *txn = &s->txn;
8281
8282 /* these ones will have been dynamically allocated */
8283 pool_free2(pool2_requri, txn->uri);
8284 pool_free2(pool2_capture, txn->cli_cookie);
8285 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8286 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8287 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8288
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8289 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8290 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8291 txn->uri = NULL;
8292 txn->srv_cookie = NULL;
8293 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8294
8295 if (txn->req.cap) {
8296 struct cap_hdr *h;
8297 for (h = s->fe->req_cap; h; h = h->next)
8298 pool_free2(h->pool, txn->req.cap[h->index]);
8299 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8300 }
8301
8302 if (txn->rsp.cap) {
8303 struct cap_hdr *h;
8304 for (h = s->fe->rsp_cap; h; h = h->next)
8305 pool_free2(h->pool, txn->rsp.cap[h->index]);
8306 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8307 }
8308
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8309}
8310
8311/* to be used at the end of a transaction to prepare a new one */
8312void http_reset_txn(struct session *s)
8313{
8314 http_end_txn(s);
8315 http_init_txn(s);
8316
8317 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8318 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame^]8319 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8320 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8321 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8322 /* re-init store persistence */
8323 s->store_count = 0;
8324
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8325 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8326
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8327 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8328
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8329 /* We must trim any excess data from the response buffer, because we
8330 * may have blocked an invalid response from a server that we don't
8331 * want to accidentely forward once we disable the analysers, nor do
8332 * we want those data to come along with next response. A typical
8333 * example of such data would be from a buggy server responding to
8334 * a HEAD with some data, or sending more than the advertised
8335 * content-length.
8336 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8337 if (unlikely(s->rep->buf->i))
8338 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8339
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8340 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8341 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8342
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8343 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8344 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8345
8346 s->req->rex = TICK_ETERNITY;
8347 s->req->wex = TICK_ETERNITY;
8348 s->req->analyse_exp = TICK_ETERNITY;
8349 s->rep->rex = TICK_ETERNITY;
8350 s->rep->wex = TICK_ETERNITY;
8351 s->rep->analyse_exp = TICK_ETERNITY;
8352}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8353
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8354void free_http_req_rules(struct list *r) {
8355 struct http_req_rule *tr, *pr;
8356
8357 list_for_each_entry_safe(pr, tr, r, list) {
8358 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8359 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8360 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8361
8362 free(pr);
8363 }
8364}
8365
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8366/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8367struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8368{
8369 struct http_req_rule *rule;
8370 int cur_arg;
8371
8372 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8373 if (!rule) {
8374 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8375 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8376 }
8377
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8378 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8379 rule->action = HTTP_REQ_ACT_ALLOW;
8380 cur_arg = 1;
8381 } else if (!strcmp(args[0], "deny")) {
8382 rule->action = HTTP_REQ_ACT_DENY;
8383 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8384 } else if (!strcmp(args[0], "tarpit")) {
8385 rule->action = HTTP_REQ_ACT_TARPIT;
8386 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8387 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8388 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8389 cur_arg = 1;
8390
8391 while(*args[cur_arg]) {
8392 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8393 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8394 cur_arg+=2;
8395 continue;
8396 } else
8397 break;
8398 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8399 } else if (!strcmp(args[0], "set-nice")) {
8400 rule->action = HTTP_REQ_ACT_SET_NICE;
8401 cur_arg = 1;
8402
8403 if (!*args[cur_arg] ||
8404 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8405 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8406 file, linenum, args[0]);
8407 goto out_err;
8408 }
8409 rule->arg.nice = atoi(args[cur_arg]);
8410 if (rule->arg.nice < -1024)
8411 rule->arg.nice = -1024;
8412 else if (rule->arg.nice > 1024)
8413 rule->arg.nice = 1024;
8414 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8415 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8416 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8417 cur_arg = 1;
8418
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8419 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8420 (*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]8421 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8422 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8423 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8424 }
8425
8426 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8427 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8428 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8429
8430 proxy->conf.args.ctx = ARGC_HDR;
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame]8431 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8432 (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]8433 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8434 } else if (strcmp(args[0], "redirect") == 0) {
8435 struct redirect_rule *redir;
8436 char *errmsg;
8437
8438 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg)) == NULL) {
8439 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8440 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8441 goto out_err;
8442 }
8443
8444 /* this redirect rule might already contain a parsed condition which
8445 * we'll pass to the http-request rule.
8446 */
8447 rule->action = HTTP_REQ_ACT_REDIR;
8448 rule->arg.redir = redir;
8449 rule->cond = redir->cond;
8450 redir->cond = NULL;
8451 cur_arg = 2;
8452 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8453 } else {
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8454 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', 'tarpit', 'add-header', 'set-header', 'set-nice', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8455 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8456 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8457 }
8458
8459 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8460 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8461 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8462
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8463 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8464 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8465 file, linenum, args[0], errmsg);
8466 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8467 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8468 }
8469 rule->cond = cond;
8470 }
8471 else if (*args[cur_arg]) {
8472 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8473 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8474 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8475 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8476 }
8477
8478 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8479 out_err:
8480 free(rule);
8481 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8482}
8483
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8484/* parse an "http-respose" rule */
8485struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8486{
8487 struct http_res_rule *rule;
8488 int cur_arg;
8489
8490 rule = calloc(1, sizeof(*rule));
8491 if (!rule) {
8492 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8493 goto out_err;
8494 }
8495
8496 if (!strcmp(args[0], "allow")) {
8497 rule->action = HTTP_RES_ACT_ALLOW;
8498 cur_arg = 1;
8499 } else if (!strcmp(args[0], "deny")) {
8500 rule->action = HTTP_RES_ACT_DENY;
8501 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8502 } else if (!strcmp(args[0], "set-nice")) {
8503 rule->action = HTTP_RES_ACT_SET_NICE;
8504 cur_arg = 1;
8505
8506 if (!*args[cur_arg] ||
8507 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8508 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8509 file, linenum, args[0]);
8510 goto out_err;
8511 }
8512 rule->arg.nice = atoi(args[cur_arg]);
8513 if (rule->arg.nice < -1024)
8514 rule->arg.nice = -1024;
8515 else if (rule->arg.nice > 1024)
8516 rule->arg.nice = 1024;
8517 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8518 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8519 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8520 cur_arg = 1;
8521
8522 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8523 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8524 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8525 file, linenum, args[0]);
8526 goto out_err;
8527 }
8528
8529 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8530 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8531 LIST_INIT(&rule->arg.hdr_add.fmt);
8532
8533 proxy->conf.args.ctx = ARGC_HDR;
8534 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8535 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR);
8536 cur_arg += 2;
8537 } else {
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8538 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', 'add-header', 'set-header', 'set-nice', but got '%s'%s.\n",
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8539 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8540 goto out_err;
8541 }
8542
8543 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8544 struct acl_cond *cond;
8545 char *errmsg = NULL;
8546
8547 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8548 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8549 file, linenum, args[0], errmsg);
8550 free(errmsg);
8551 goto out_err;
8552 }
8553 rule->cond = cond;
8554 }
8555 else if (*args[cur_arg]) {
8556 Alert("parsing [%s:%d]: 'http-response %s' expects"
8557 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8558 file, linenum, args[0], args[cur_arg]);
8559 goto out_err;
8560 }
8561
8562 return rule;
8563 out_err:
8564 free(rule);
8565 return NULL;
8566}
8567
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8568/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
8569 * with <err> filled with the error message.
8570 */
8571struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
8572 const char **args, char **errmsg)
8573{
8574 struct redirect_rule *rule;
8575 int cur_arg;
8576 int type = REDIRECT_TYPE_NONE;
8577 int code = 302;
8578 const char *destination = NULL;
8579 const char *cookie = NULL;
8580 int cookie_set = 0;
8581 unsigned int flags = REDIRECT_FLAG_NONE;
8582 struct acl_cond *cond = NULL;
8583
8584 cur_arg = 0;
8585 while (*(args[cur_arg])) {
8586 if (strcmp(args[cur_arg], "location") == 0) {
8587 if (!*args[cur_arg + 1])
8588 goto missing_arg;
8589
8590 type = REDIRECT_TYPE_LOCATION;
8591 cur_arg++;
8592 destination = args[cur_arg];
8593 }
8594 else if (strcmp(args[cur_arg], "prefix") == 0) {
8595 if (!*args[cur_arg + 1])
8596 goto missing_arg;
8597
8598 type = REDIRECT_TYPE_PREFIX;
8599 cur_arg++;
8600 destination = args[cur_arg];
8601 }
8602 else if (strcmp(args[cur_arg], "scheme") == 0) {
8603 if (!*args[cur_arg + 1])
8604 goto missing_arg;
8605
8606 type = REDIRECT_TYPE_SCHEME;
8607 cur_arg++;
8608 destination = args[cur_arg];
8609 }
8610 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8611 if (!*args[cur_arg + 1])
8612 goto missing_arg;
8613
8614 cur_arg++;
8615 cookie = args[cur_arg];
8616 cookie_set = 1;
8617 }
8618 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8619 if (!*args[cur_arg + 1])
8620 goto missing_arg;
8621
8622 cur_arg++;
8623 cookie = args[cur_arg];
8624 cookie_set = 0;
8625 }
8626 else if (strcmp(args[cur_arg], "code") == 0) {
8627 if (!*args[cur_arg + 1])
8628 goto missing_arg;
8629
8630 cur_arg++;
8631 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8632 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8633 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8634 "'%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]8635 args[cur_arg - 1], args[cur_arg]);
8636 return NULL;
8637 }
8638 }
8639 else if (!strcmp(args[cur_arg],"drop-query")) {
8640 flags |= REDIRECT_FLAG_DROP_QS;
8641 }
8642 else if (!strcmp(args[cur_arg],"append-slash")) {
8643 flags |= REDIRECT_FLAG_APPEND_SLASH;
8644 }
8645 else if (strcmp(args[cur_arg], "if") == 0 ||
8646 strcmp(args[cur_arg], "unless") == 0) {
8647 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8648 if (!cond) {
8649 memprintf(errmsg, "error in condition: %s", *errmsg);
8650 return NULL;
8651 }
8652 break;
8653 }
8654 else {
8655 memprintf(errmsg,
8656 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8657 args[cur_arg]);
8658 return NULL;
8659 }
8660 cur_arg++;
8661 }
8662
8663 if (type == REDIRECT_TYPE_NONE) {
8664 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8665 return NULL;
8666 }
8667
8668 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8669 rule->cond = cond;
8670 rule->rdr_str = strdup(destination);
8671 rule->rdr_len = strlen(destination);
8672 if (cookie) {
8673 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8674 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8675 */
8676 rule->cookie_len = strlen(cookie);
8677 if (cookie_set) {
8678 rule->cookie_str = malloc(rule->cookie_len + 10);
8679 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8680 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8681 rule->cookie_len += 9;
8682 } else {
8683 rule->cookie_str = malloc(rule->cookie_len + 21);
8684 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8685 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8686 rule->cookie_len += 20;
8687 }
8688 }
8689 rule->type = type;
8690 rule->code = code;
8691 rule->flags = flags;
8692 LIST_INIT(&rule->list);
8693 return rule;
8694
8695 missing_arg:
8696 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8697 return NULL;
8698}
8699
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8700/************************************************************************/
8701/* The code below is dedicated to ACL parsing and matching */
8702/************************************************************************/
8703
8704
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8705/* This function ensures that the prerequisites for an L7 fetch are ready,
8706 * which means that a request or response is ready. If some data is missing,
8707 * 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]8708 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8709 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8710 *
8711 * The function returns :
8712 * 0 if some data is missing or if the requested data cannot be fetched
8713 * -1 if it is certain that we'll never have any HTTP message there
8714 * 1 if an HTTP message is ready
8715 */
8716static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8717acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8718 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8719{
8720 struct http_txn *txn = l7;
8721 struct http_msg *msg = &txn->req;
8722
8723 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8724 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8725 */
8726
8727 if (unlikely(!s || !txn))
8728 return 0;
8729
8730 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8731 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8732
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8733 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8734 if (unlikely(!s->req))
8735 return 0;
8736
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8737 /* If the buffer does not leave enough free space at the end,
8738 * we must first realign it.
8739 */
8740 if (s->req->buf->p > s->req->buf->data &&
8741 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8742 buffer_slow_realign(s->req->buf);
8743
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8744 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8745 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8746 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8747 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8748 return -1;
8749 }
8750
8751 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8752 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8753 http_msg_analyzer(msg, &txn->hdr_idx);
8754
8755 /* Still no valid request ? */
8756 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8757 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8758 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8759 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8760 return -1;
8761 }
8762 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8763 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8764 return 0;
8765 }
8766
8767 /* OK we just got a valid HTTP request. We have some minor
8768 * preparation to perform so that further checks can rely
8769 * on HTTP tests.
8770 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8771
8772 /* If the request was parsed but was too large, we must absolutely
8773 * return an error so that it is not processed. At the moment this
8774 * cannot happen, but if the parsers are to change in the future,
8775 * we want this check to be maintained.
8776 */
8777 if (unlikely(s->req->buf->i + s->req->buf->p >
8778 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8779 msg->msg_state = HTTP_MSG_ERROR;
8780 return 1;
8781 }
8782
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8783 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8784 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8785 s->flags |= SN_REDIRECTABLE;
8786
8787 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8788 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8789 return -1;
8790 }
8791 }
8792
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8793 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8794 return 0; /* data might have moved and indexes changed */
8795
8796 /* otherwise everything's ready for the request */
8797 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8798 else {
8799 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8800 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8801 return 0;
8802 }
8803
8804 /* everything's OK */
8805 return 1;
8806}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8807
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8808#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8809 do { int r = acl_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]8810
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8811#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8812 do { int r = acl_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]8813
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8814
8815/* 1. Check on METHOD
8816 * We use the pre-parsed method if it is known, and store its number as an
8817 * integer. If it is unknown, we use the pointer and the length.
8818 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8819static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8820{
8821 int len, meth;
8822
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8823 len = strlen(*text);
8824 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8825
8826 pattern->val.i = meth;
8827 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8828 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8829 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8830 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8831 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8832 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8833 pattern->len = len;
8834 }
8835 return 1;
8836}
8837
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8838/* This function fetches the method of current HTTP request and stores
8839 * it in the global pattern struct as a chunk. There are two possibilities :
8840 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8841 * in <len> and <ptr> is NULL ;
8842 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8843 * <len> to its length.
8844 * This is intended to be used with acl_match_meth() only.
8845 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8846static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8847smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8848 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8849{
8850 int meth;
8851 struct http_txn *txn = l7;
8852
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8853 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8854
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8855 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8856 smp->type = SMP_T_UINT;
8857 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8858 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8859 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8860 /* ensure the indexes are not affected */
8861 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8862 smp->type = SMP_T_CSTR;
8863 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8864 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8865 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8866 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8867 return 1;
8868}
8869
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8870/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8871static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8872{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8873 int icase;
8874
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8875
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8876 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8877 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8878 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8879 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8880 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8881 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8882
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8883 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8884 if (pattern->val.i != HTTP_METH_OTHER)
8885 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8886
8887 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8888 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8889 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8890
8891 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8892 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8893 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8894 return ACL_PAT_FAIL;
8895 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8896}
8897
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8898static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8899smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8900 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8901{
8902 struct http_txn *txn = l7;
8903 char *ptr;
8904 int len;
8905
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8906 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8907
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8908 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8909 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8910
8911 while ((len-- > 0) && (*ptr++ != '/'));
8912 if (len <= 0)
8913 return 0;
8914
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8915 smp->type = SMP_T_CSTR;
8916 smp->data.str.str = ptr;
8917 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8918
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8919 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8920 return 1;
8921}
8922
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8923static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8924smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8925 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8926{
8927 struct http_txn *txn = l7;
8928 char *ptr;
8929 int len;
8930
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8931 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8932
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8933 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8934 return 0;
8935
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8936 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8937 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8938
8939 while ((len-- > 0) && (*ptr++ != '/'));
8940 if (len <= 0)
8941 return 0;
8942
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8943 smp->type = SMP_T_CSTR;
8944 smp->data.str.str = ptr;
8945 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8946
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8947 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8948 return 1;
8949}
8950
8951/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8952static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8953smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8954 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8955{
8956 struct http_txn *txn = l7;
8957 char *ptr;
8958 int len;
8959
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8960 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8961
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8962 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8963 return 0;
8964
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8965 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8966 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8967
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8968 smp->type = SMP_T_UINT;
8969 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8970 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8971 return 1;
8972}
8973
8974/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8975static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8976smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8977 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8978{
8979 struct http_txn *txn = l7;
8980
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8981 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8982
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8983 smp->type = SMP_T_CSTR;
8984 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8985 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8986 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8987 return 1;
8988}
8989
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8990static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8991smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8992 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8993{
8994 struct http_txn *txn = l7;
8995
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8996 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8997
8998 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8999 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
9000 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9001 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9002 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]9003 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9004
9005 /*
9006 * If we are parsing url in frontend space, we prepare backend stage
9007 * to not parse again the same url ! optimization lazyness...
9008 */
9009 if (px->options & PR_O_HTTP_PROXY)
9010 l4->flags |= SN_ADDR_SET;
9011
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9012 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9013 return 1;
9014}
9015
9016static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9017smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9018 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9019{
9020 struct http_txn *txn = l7;
9021
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9022 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9023
9024 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]9025 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9026 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]9027 smp->data.uint = ntohs(((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_port);
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9028
9029 if (px->options & PR_O_HTTP_PROXY)
9030 l4->flags |= SN_ADDR_SET;
9031
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9032 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9033 return 1;
9034}
9035
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9036/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9037 * Accepts an optional argument of type string containing the header field name,
9038 * and an optional argument of type signed or unsigned integer to request an
9039 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9040 * headers are considered from the first one. It does not stop on commas and
9041 * returns full lines instead (useful for User-Agent or Date for example).
9042 */
9043static int
9044smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9045 const struct arg *args, struct sample *smp)
9046{
9047 struct http_txn *txn = l7;
9048 struct hdr_idx *idx = &txn->hdr_idx;
9049 struct hdr_ctx *ctx = smp->ctx.a[0];
9050 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9051 int occ = 0;
9052 const char *name_str = NULL;
9053 int name_len = 0;
9054
9055 if (!ctx) {
9056 /* first call */
9057 ctx = &static_hdr_ctx;
9058 ctx->idx = 0;
9059 smp->ctx.a[0] = ctx;
9060 }
9061
9062 if (args) {
9063 if (args[0].type != ARGT_STR)
9064 return 0;
9065 name_str = args[0].data.str.str;
9066 name_len = args[0].data.str.len;
9067
9068 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9069 occ = args[1].data.uint;
9070 }
9071
9072 CHECK_HTTP_MESSAGE_FIRST();
9073
9074 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9075 /* search for header from the beginning */
9076 ctx->idx = 0;
9077
9078 if (!occ && !(opt & SMP_OPT_ITERATE))
9079 /* no explicit occurrence and single fetch => last header by default */
9080 occ = -1;
9081
9082 if (!occ)
9083 /* prepare to report multiple occurrences for ACL fetches */
9084 smp->flags |= SMP_F_NOT_LAST;
9085
9086 smp->type = SMP_T_CSTR;
9087 smp->flags |= SMP_F_VOL_HDR;
9088 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
9089 return 1;
9090
9091 smp->flags &= ~SMP_F_NOT_LAST;
9092 return 0;
9093}
9094
9095/* 6. Check on HTTP header count. The number of occurrences is returned.
9096 * Accepts exactly 1 argument of type string. It does not stop on commas and
9097 * returns full lines instead (useful for User-Agent or Date for example).
9098 */
9099static int
9100smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9101 const struct arg *args, struct sample *smp)
9102{
9103 struct http_txn *txn = l7;
9104 struct hdr_idx *idx = &txn->hdr_idx;
9105 struct hdr_ctx ctx;
9106 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9107 int cnt;
9108
9109 if (!args || args->type != ARGT_STR)
9110 return 0;
9111
9112 CHECK_HTTP_MESSAGE_FIRST();
9113
9114 ctx.idx = 0;
9115 cnt = 0;
9116 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9117 cnt++;
9118
9119 smp->type = SMP_T_UINT;
9120 smp->data.uint = cnt;
9121 smp->flags = SMP_F_VOL_HDR;
9122 return 1;
9123}
9124
9125/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9126 * Accepts an optional argument of type string containing the header field name,
9127 * and an optional argument of type signed or unsigned integer to request an
9128 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9129 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9130 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9131static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9132smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9133 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9134{
9135 struct http_txn *txn = l7;
9136 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9137 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9138 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]9139 int occ = 0;
9140 const char *name_str = NULL;
9141 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9142
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9143 if (!ctx) {
9144 /* first call */
9145 ctx = &static_hdr_ctx;
9146 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9147 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9148 }
9149
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9150 if (args) {
9151 if (args[0].type != ARGT_STR)
9152 return 0;
9153 name_str = args[0].data.str.str;
9154 name_len = args[0].data.str.len;
9155
9156 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9157 occ = args[1].data.uint;
9158 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9159
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9160 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9161
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9162 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9163 /* search for header from the beginning */
9164 ctx->idx = 0;
9165
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9166 if (!occ && !(opt & SMP_OPT_ITERATE))
9167 /* no explicit occurrence and single fetch => last header by default */
9168 occ = -1;
9169
9170 if (!occ)
9171 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9172 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9173
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9174 smp->type = SMP_T_CSTR;
9175 smp->flags |= SMP_F_VOL_HDR;
9176 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]9177 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9178
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9179 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9180 return 0;
9181}
9182
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9183/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9184 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9185 */
9186static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9187smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9188 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9189{
9190 struct http_txn *txn = l7;
9191 struct hdr_idx *idx = &txn->hdr_idx;
9192 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9193 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]9194 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9195
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9196 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9197 return 0;
9198
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9199 CHECK_HTTP_MESSAGE_FIRST();
9200
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9201 ctx.idx = 0;
9202 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9203 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]9204 cnt++;
9205
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9206 smp->type = SMP_T_UINT;
9207 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9208 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9209 return 1;
9210}
9211
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9212/* Fetch an HTTP header's integer value. The integer value is returned. It
9213 * takes a mandatory argument of type string and an optional one of type int
9214 * to designate a specific occurrence. It returns an unsigned integer, which
9215 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9216 */
9217static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9218smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9219 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9220{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9221 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9222
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9223 if (ret > 0) {
9224 smp->type = SMP_T_UINT;
9225 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9226 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9227
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9228 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9229}
9230
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9231/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9232 * and an optional one of type int to designate a specific occurrence.
9233 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9234 */
9235static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9236smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9237 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9238{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9239 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9240
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9241 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9242 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9243 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9244 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9245 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9246 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9247 if (smp->data.str.len < temp->size - 1) {
9248 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9249 temp->str[smp->data.str.len] = '\0';
9250 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9251 smp->type = SMP_T_IPV6;
9252 break;
9253 }
9254 }
9255 }
9256
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9257 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9258 if (!(smp->flags & SMP_F_NOT_LAST))
9259 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9260 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9261 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9262}
9263
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9264/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9265 * the first '/' after the possible hostname, and ends before the possible '?'.
9266 */
9267static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9268smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9269 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9270{
9271 struct http_txn *txn = l7;
9272 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9273
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9274 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9275
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9276 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]9277 ptr = http_get_path(txn);
9278 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9279 return 0;
9280
9281 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9282 smp->type = SMP_T_CSTR;
9283 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9284
9285 while (ptr < end && *ptr != '?')
9286 ptr++;
9287
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9288 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9289 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9290 return 1;
9291}
9292
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9293/* This produces a concatenation of the first occurrence of the Host header
9294 * followed by the path component if it begins with a slash ('/'). This means
9295 * that '*' will not be added, resulting in exactly the first Host entry.
9296 * If no Host header is found, then the path is returned as-is. The returned
9297 * value is stored in the trash so it does not need to be marked constant.
9298 */
9299static int
9300smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9301 const struct arg *args, struct sample *smp)
9302{
9303 struct http_txn *txn = l7;
9304 char *ptr, *end, *beg;
9305 struct hdr_ctx ctx;
9306
9307 CHECK_HTTP_MESSAGE_FIRST();
9308
9309 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9310 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]9311 !ctx.vlen)
9312 return smp_fetch_path(px, l4, l7, opt, args, smp);
9313
9314 /* 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]9315 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9316 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9317 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9318 smp->data.str.len = ctx.vlen;
9319
9320 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9321 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]9322 beg = http_get_path(txn);
9323 if (!beg)
9324 beg = end;
9325
9326 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9327
9328 if (beg < ptr && *beg == '/') {
9329 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9330 smp->data.str.len += ptr - beg;
9331 }
9332
9333 smp->flags = SMP_F_VOL_1ST;
9334 return 1;
9335}
9336
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9337/* This produces a 32-bit hash of the concatenation of the first occurrence of
9338 * the Host header followed by the path component if it begins with a slash ('/').
9339 * This means that '*' will not be added, resulting in exactly the first Host
9340 * entry. If no Host header is found, then the path is used. The resulting value
9341 * is hashed using the url hash followed by a full avalanche hash and provides a
9342 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
9343 * high-traffic sites without having to store whole paths.
9344 */
9345static int
9346smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9347 const struct arg *args, struct sample *smp)
9348{
9349 struct http_txn *txn = l7;
9350 struct hdr_ctx ctx;
9351 unsigned int hash = 0;
9352 char *ptr, *beg, *end;
9353 int len;
9354
9355 CHECK_HTTP_MESSAGE_FIRST();
9356
9357 ctx.idx = 0;
9358 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9359 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9360 ptr = ctx.line + ctx.val;
9361 len = ctx.vlen;
9362 while (len--)
9363 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9364 }
9365
9366 /* now retrieve the path */
9367 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9368 beg = http_get_path(txn);
9369 if (!beg)
9370 beg = end;
9371
9372 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9373
9374 if (beg < ptr && *beg == '/') {
9375 while (beg < ptr)
9376 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9377 }
9378 hash = full_hash(hash);
9379
9380 smp->type = SMP_T_UINT;
9381 smp->data.uint = hash;
9382 smp->flags = SMP_F_VOL_1ST;
9383 return 1;
9384}
9385
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9386/* This concatenates the source address with the 32-bit hash of the Host and
9387 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
9388 * per-url counters. The result is a binary block from 8 to 20 bytes depending
9389 * on the source address length. The URL hash is stored before the address so
9390 * that in environments where IPv6 is insignificant, truncating the output to
9391 * 8 bytes would still work.
9392 */
9393static int
9394smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9395 const struct arg *args, struct sample *smp)
9396{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9397 struct chunk *temp;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9398
9399 if (!smp_fetch_base32(px, l4, l7, opt, args, smp))
9400 return 0;
9401
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9402 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9403 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9404 temp->len += sizeof(smp->data.uint);
9405
9406 switch (l4->si[0].conn->addr.from.ss_family) {
9407 case AF_INET:
9408 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
9409 temp->len += 4;
9410 break;
9411 case AF_INET6:
9412 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
9413 temp->len += 16;
9414 break;
9415 default:
9416 return 0;
9417 }
9418
9419 smp->data.str = *temp;
9420 smp->type = SMP_T_BIN;
9421 return 1;
9422}
9423
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9424static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9425smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9426 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9427{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9428 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9429 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9430 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9431
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9432 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9433
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9434 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9435 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9436 return 1;
9437}
9438
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9439/* return a valid test if the current request is the first one on the connection */
9440static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9441smp_fetch_http_first_req(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9442 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9443{
9444 if (!s)
9445 return 0;
9446
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9447 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9448 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9449 return 1;
9450}
9451
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9452/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9453static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9454smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9455 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9456{
9457
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9458 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9459 return 0;
9460
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9461 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9462
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9463 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9464 return 0;
9465
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9466 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9467 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]9468 return 1;
9469}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9470
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9471/* Accepts exactly 1 argument of type userlist */
9472static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9473smp_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9474 const struct arg *args, struct sample *smp)
9475{
9476
9477 if (!args || args->type != ARGT_USR)
9478 return 0;
9479
9480 CHECK_HTTP_MESSAGE_FIRST();
9481
9482 if (!get_http_auth(l4))
9483 return 0;
9484
9485 /* acl_match_auth() will need several information at once */
9486 smp->ctx.a[0] = args->data.usr; /* user list */
9487 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9488 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9489
9490 /* if the user does not belong to the userlist or has a wrong password,
9491 * report that it unconditionally does not match. Otherwise we return
9492 * a non-zero integer which will be ignored anyway since all the params
9493 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
9494 */
9495 smp->type = SMP_T_BOOL;
9496 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9497 if (smp->data.uint)
9498 smp->type = SMP_T_UINT;
9499
9500 return 1;
9501}
9502
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9503/* Try to find the next occurrence of a cookie name in a cookie header value.
9504 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9505 * the cookie value is returned into *value and *value_l, and the function
9506 * returns a pointer to the next pointer to search from if the value was found.
9507 * Otherwise if the cookie was not found, NULL is returned and neither value
9508 * nor value_l are touched. The input <hdr> string should first point to the
9509 * header's value, and the <hdr_end> pointer must point to the first character
9510 * not part of the value. <list> must be non-zero if value may represent a list
9511 * of values (cookie headers). This makes it faster to abort parsing when no
9512 * list is expected.
9513 */
9514static char *
9515extract_cookie_value(char *hdr, const char *hdr_end,
9516 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9517 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9518{
9519 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9520 char *next;
9521
9522 /* we search at least a cookie name followed by an equal, and more
9523 * generally something like this :
9524 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9525 */
9526 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9527 /* Iterate through all cookies on this line */
9528
9529 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9530 att_beg++;
9531
9532 /* find att_end : this is the first character after the last non
9533 * space before the equal. It may be equal to hdr_end.
9534 */
9535 equal = att_end = att_beg;
9536
9537 while (equal < hdr_end) {
9538 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9539 break;
9540 if (http_is_spht[(unsigned char)*equal++])
9541 continue;
9542 att_end = equal;
9543 }
9544
9545 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9546 * is between <att_beg> and <equal>, both may be identical.
9547 */
9548
9549 /* look for end of cookie if there is an equal sign */
9550 if (equal < hdr_end && *equal == '=') {
9551 /* look for the beginning of the value */
9552 val_beg = equal + 1;
9553 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9554 val_beg++;
9555
9556 /* find the end of the value, respecting quotes */
9557 next = find_cookie_value_end(val_beg, hdr_end);
9558
9559 /* make val_end point to the first white space or delimitor after the value */
9560 val_end = next;
9561 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9562 val_end--;
9563 } else {
9564 val_beg = val_end = next = equal;
9565 }
9566
9567 /* We have nothing to do with attributes beginning with '$'. However,
9568 * they will automatically be removed if a header before them is removed,
9569 * since they're supposed to be linked together.
9570 */
9571 if (*att_beg == '$')
9572 continue;
9573
9574 /* Ignore cookies with no equal sign */
9575 if (equal == next)
9576 continue;
9577
9578 /* Now we have the cookie name between att_beg and att_end, and
9579 * its value between val_beg and val_end.
9580 */
9581
9582 if (att_end - att_beg == cookie_name_l &&
9583 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9584 /* let's return this value and indicate where to go on from */
9585 *value = val_beg;
9586 *value_l = val_end - val_beg;
9587 return next + 1;
9588 }
9589
9590 /* Set-Cookie headers only have the name in the first attr=value part */
9591 if (!list)
9592 break;
9593 }
9594
9595 return NULL;
9596}
9597
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9598/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9599 * 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]9600 * 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]9601 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9602 * 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]9603 * Accepts exactly 1 argument of type string. If the input options indicate
9604 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9605 */
9606static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9607smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9608 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9609{
9610 struct http_txn *txn = l7;
9611 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9612 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9613 const struct http_msg *msg;
9614 const char *hdr_name;
9615 int hdr_name_len;
9616 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9617 int occ = 0;
9618 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9619
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9620 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9621 return 0;
9622
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9623 if (!ctx) {
9624 /* first call */
9625 ctx = &static_hdr_ctx;
9626 ctx->idx = 0;
9627 smp->ctx.a[2] = ctx;
9628 }
9629
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9630 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9631
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9632 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9633 msg = &txn->req;
9634 hdr_name = "Cookie";
9635 hdr_name_len = 6;
9636 } else {
9637 msg = &txn->rsp;
9638 hdr_name = "Set-Cookie";
9639 hdr_name_len = 10;
9640 }
9641
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9642 if (!occ && !(opt & SMP_OPT_ITERATE))
9643 /* no explicit occurrence and single fetch => last cookie by default */
9644 occ = -1;
9645
9646 /* OK so basically here, either we want only one value and it's the
9647 * last one, or we want to iterate over all of them and we fetch the
9648 * next one.
9649 */
9650
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9651 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9652 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9653 /* search for the header from the beginning, we must first initialize
9654 * the search parameters.
9655 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9656 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9657 ctx->idx = 0;
9658 }
9659
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9660 smp->flags |= SMP_F_VOL_HDR;
9661
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9662 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9663 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9664 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9665 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9666 goto out;
9667
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9668 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9669 continue;
9670
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9671 smp->ctx.a[0] = ctx->line + ctx->val;
9672 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9673 }
9674
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9675 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9676 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]9677 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9678 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9679 &smp->data.str.str,
9680 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9681 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9682 found = 1;
9683 if (occ >= 0) {
9684 /* one value was returned into smp->data.str.{str,len} */
9685 smp->flags |= SMP_F_NOT_LAST;
9686 return 1;
9687 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9688 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9689 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9690 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9691 /* all cookie headers and values were scanned. If we're looking for the
9692 * last occurrence, we may return it now.
9693 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9694 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9695 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9696 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9697}
9698
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9699/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9700 * 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]9701 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9702 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9703 */
9704static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9705smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9706 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9707{
9708 struct http_txn *txn = l7;
9709 struct hdr_idx *idx = &txn->hdr_idx;
9710 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9711 const struct http_msg *msg;
9712 const char *hdr_name;
9713 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9714 int cnt;
9715 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9716 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9717
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9718 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9719 return 0;
9720
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9721 CHECK_HTTP_MESSAGE_FIRST();
9722
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9723 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9724 msg = &txn->req;
9725 hdr_name = "Cookie";
9726 hdr_name_len = 6;
9727 } else {
9728 msg = &txn->rsp;
9729 hdr_name = "Set-Cookie";
9730 hdr_name_len = 10;
9731 }
9732
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9733 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9734 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9735 ctx.idx = 0;
9736 cnt = 0;
9737
9738 while (1) {
9739 /* Note: val_beg == NULL every time we need to fetch a new header */
9740 if (!val_beg) {
9741 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9742 break;
9743
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9744 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9745 continue;
9746
9747 val_beg = ctx.line + ctx.val;
9748 val_end = val_beg + ctx.vlen;
9749 }
9750
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9751 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9752 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9753 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9754 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9755 &smp->data.str.str,
9756 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9757 cnt++;
9758 }
9759 }
9760
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9761 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9762 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9763 return 1;
9764}
9765
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9766/* Fetch an cookie's integer value. The integer value is returned. It
9767 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9768 */
9769static int
9770smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9771 const struct arg *args, struct sample *smp)
9772{
9773 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
9774
9775 if (ret > 0) {
9776 smp->type = SMP_T_UINT;
9777 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9778 }
9779
9780 return ret;
9781}
9782
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9783/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9784/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9785/************************************************************************/
9786
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9787/*
9788 * Given a path string and its length, find the position of beginning of the
9789 * query string. Returns NULL if no query string is found in the path.
9790 *
9791 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9792 *
9793 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9794 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9795static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9796{
9797 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9798
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9799 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9800 return p ? p + 1 : NULL;
9801}
9802
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9803static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9804{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9805 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9806}
9807
9808/*
9809 * Given a url parameter, find the starting position of the first occurence,
9810 * or NULL if the parameter is not found.
9811 *
9812 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9813 * the function will return query_string+8.
9814 */
9815static char*
9816find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9817 char* url_param_name, size_t url_param_name_l,
9818 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9819{
9820 char *pos, *last;
9821
9822 pos = query_string;
9823 last = query_string + query_string_l - url_param_name_l - 1;
9824
9825 while (pos <= last) {
9826 if (pos[url_param_name_l] == '=') {
9827 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9828 return pos;
9829 pos += url_param_name_l + 1;
9830 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9831 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9832 pos++;
9833 pos++;
9834 }
9835 return NULL;
9836}
9837
9838/*
9839 * Given a url parameter name, returns its value and size into *value and
9840 * *value_l respectively, and returns non-zero. If the parameter is not found,
9841 * zero is returned and value/value_l are not touched.
9842 */
9843static int
9844find_url_param_value(char* path, size_t path_l,
9845 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9846 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9847{
9848 char *query_string, *qs_end;
9849 char *arg_start;
9850 char *value_start, *value_end;
9851
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9852 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9853 if (!query_string)
9854 return 0;
9855
9856 qs_end = path + path_l;
9857 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9858 url_param_name, url_param_name_l,
9859 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9860 if (!arg_start)
9861 return 0;
9862
9863 value_start = arg_start + url_param_name_l + 1;
9864 value_end = value_start;
9865
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9866 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9867 value_end++;
9868
9869 *value = value_start;
9870 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9871 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9872}
9873
9874static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9875smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9876 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9877{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9878 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9879 struct http_txn *txn = l7;
9880 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9881
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9882 if (!args || args[0].type != ARGT_STR ||
9883 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9884 return 0;
9885
9886 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9887
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9888 if (args[1].type)
9889 delim = *args[1].data.str.str;
9890
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9891 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]9892 args->data.str.str, args->data.str.len,
9893 &smp->data.str.str, &smp->data.str.len,
9894 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9895 return 0;
9896
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9897 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9898 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9899 return 1;
9900}
9901
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9902/* Return the signed integer value for the specified url parameter (see url_param
9903 * above).
9904 */
9905static int
9906smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9907 const struct arg *args, struct sample *smp)
9908{
9909 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
9910
9911 if (ret > 0) {
9912 smp->type = SMP_T_UINT;
9913 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9914 }
9915
9916 return ret;
9917}
9918
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9919/* This function is used to validate the arguments passed to any "hdr" fetch
9920 * keyword. These keywords support an optional positive or negative occurrence
9921 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9922 * is assumed that the types are already the correct ones. Returns 0 on error,
9923 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9924 * error message in case of error, that the caller is responsible for freeing.
9925 * The initial location must either be freeable or NULL.
9926 */
9927static int val_hdr(struct arg *arg, char **err_msg)
9928{
9929 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9930 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9931 return 0;
9932 }
9933 return 1;
9934}
9935
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9936/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9937/* All supported ACL keywords must be declared here. */
9938/************************************************************************/
9939
9940/* Note: must not be declared <const> as its list will be overwritten.
9941 * Please take care of keeping this list alphabetically sorted.
9942 */
9943static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9944 { "base", "base", acl_parse_str, acl_match_str },
9945 { "base_beg", "base", acl_parse_str, acl_match_beg },
9946 { "base_dir", "base", acl_parse_str, acl_match_dir },
9947 { "base_dom", "base", acl_parse_str, acl_match_dom },
9948 { "base_end", "base", acl_parse_str, acl_match_end },
9949 { "base_len", "base", acl_parse_int, acl_match_len },
9950 { "base_reg", "base", acl_parse_reg, acl_match_reg },
9951 { "base_sub", "base", acl_parse_str, acl_match_sub },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9952
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9953 { "cook", "req.cook", acl_parse_str, acl_match_str },
9954 { "cook_beg", "req.cook", acl_parse_str, acl_match_beg },
9955 { "cook_cnt", "req.cook_cnt", acl_parse_int, acl_match_int },
9956 { "cook_dir", "req.cook", acl_parse_str, acl_match_dir },
9957 { "cook_dom", "req.cook", acl_parse_str, acl_match_dom },
9958 { "cook_end", "req.cook", acl_parse_str, acl_match_end },
9959 { "cook_len", "req.cook", acl_parse_int, acl_match_len },
9960 { "cook_reg", "req.cook", acl_parse_reg, acl_match_reg },
9961 { "cook_sub", "req.cook", acl_parse_str, acl_match_sub },
9962 { "cook_val", "req.cook_val", acl_parse_int, acl_match_int },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9963
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9964 { "hdr", "req.hdr", acl_parse_str, acl_match_str },
9965 { "hdr_beg", "req.hdr", acl_parse_str, acl_match_beg },
9966 { "hdr_cnt", "req.hdr_cnt", acl_parse_int, acl_match_int },
9967 { "hdr_dir", "req.hdr", acl_parse_str, acl_match_dir },
9968 { "hdr_dom", "req.hdr", acl_parse_str, acl_match_dom },
9969 { "hdr_end", "req.hdr", acl_parse_str, acl_match_end },
9970 { "hdr_ip", "req.hdr_ip", acl_parse_ip, acl_match_ip },
9971 { "hdr_len", "req.hdr", acl_parse_int, acl_match_len },
9972 { "hdr_reg", "req.hdr", acl_parse_reg, acl_match_reg },
9973 { "hdr_sub", "req.hdr", acl_parse_str, acl_match_sub },
9974 { "hdr_val", "req.hdr_val", acl_parse_int, acl_match_int },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9975
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9976 { "http_auth", NULL, acl_parse_nothing, acl_match_nothing },
9977 { "http_auth_group", NULL, acl_parse_strcat, acl_match_auth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9978
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9979 { "http_first_req", NULL, acl_parse_nothing, acl_match_nothing },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9980
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9981 { "method", NULL, acl_parse_meth, acl_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9982
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9983 { "path", "path", acl_parse_str, acl_match_str },
9984 { "path_beg", "path", acl_parse_str, acl_match_beg },
9985 { "path_dir", "path", acl_parse_str, acl_match_dir },
9986 { "path_dom", "path", acl_parse_str, acl_match_dom },
9987 { "path_end", "path", acl_parse_str, acl_match_end },
9988 { "path_len", "path", acl_parse_int, acl_match_len },
9989 { "path_reg", "path", acl_parse_reg, acl_match_reg },
9990 { "path_sub", "path", acl_parse_str, acl_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9991
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9992 { "req_proto_http", "req.proto_http",acl_parse_nothing, acl_match_nothing },
Willy Tarreauff5afcc2013-03-31 18:49:18 +0200[diff] [blame]9993 { "req_ver", "req.ver", acl_parse_str, acl_match_str },
9994 { "resp_ver", "res.ver", acl_parse_str, acl_match_str },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9995
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]9996 { "scook", "res.cook", acl_parse_str, acl_match_str },
9997 { "scook_beg", "res.cook", acl_parse_str, acl_match_beg },
9998 { "scook_cnt", "res.cook_cnt", acl_parse_int, acl_match_int },
9999 { "scook_dir", "res.cook", acl_parse_str, acl_match_dir },
10000 { "scook_dom", "res.cook", acl_parse_str, acl_match_dom },
10001 { "scook_end", "res.cook", acl_parse_str, acl_match_end },
10002 { "scook_len", "res.cook", acl_parse_int, acl_match_len },
10003 { "scook_reg", "res.cook", acl_parse_reg, acl_match_reg },
10004 { "scook_sub", "res.cook", acl_parse_str, acl_match_sub },
10005 { "scook_val", "res.cook_val", acl_parse_int, acl_match_int },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10006
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]10007 { "shdr", "res.hdr", acl_parse_str, acl_match_str },
10008 { "shdr_beg", "res.hdr", acl_parse_str, acl_match_beg },
10009 { "shdr_cnt", "res.hdr_cnt", acl_parse_int, acl_match_int },
10010 { "shdr_dir", "res.hdr", acl_parse_str, acl_match_dir },
10011 { "shdr_dom", "res.hdr", acl_parse_str, acl_match_dom },
10012 { "shdr_end", "res.hdr", acl_parse_str, acl_match_end },
10013 { "shdr_ip", "res.hdr_ip", acl_parse_ip, acl_match_ip },
10014 { "shdr_len", "res.hdr", acl_parse_int, acl_match_len },
10015 { "shdr_reg", "res.hdr", acl_parse_reg, acl_match_reg },
10016 { "shdr_sub", "res.hdr", acl_parse_str, acl_match_sub },
10017 { "shdr_val", "res.hdr_val", acl_parse_int, acl_match_int },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10018
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]10019 { "status", NULL, acl_parse_int, acl_match_int },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10020
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]10021 { "url", "url", acl_parse_str, acl_match_str },
10022 { "url_beg", "url", acl_parse_str, acl_match_beg },
10023 { "url_dir", "url", acl_parse_str, acl_match_dir },
10024 { "url_dom", "url", acl_parse_str, acl_match_dom },
10025 { "url_end", "url", acl_parse_str, acl_match_end },
10026 { "url_ip", "url_ip", acl_parse_ip, acl_match_ip },
10027 { "url_len", "url", acl_parse_int, acl_match_len },
10028 { "url_port", "url_port", acl_parse_int, acl_match_int },
10029 { "url_reg", "url", acl_parse_reg, acl_match_reg },
10030 { "url_sub", "url", acl_parse_str, acl_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10031
Willy Tarreaud86e29d2013-03-25 08:21:05 +0100[diff] [blame]10032 { "urlp", "urlp", acl_parse_str, acl_match_str },
10033 { "urlp_beg", "urlp", acl_parse_str, acl_match_beg },
10034 { "urlp_dir", "urlp", acl_parse_str, acl_match_dir },
10035 { "urlp_dom", "urlp", acl_parse_str, acl_match_dom },
10036 { "urlp_end", "urlp", acl_parse_str, acl_match_end },
10037 { "urlp_ip", "urlp", acl_parse_ip, acl_match_ip },
10038 { "urlp_len", "urlp", acl_parse_int, acl_match_len },
10039 { "urlp_reg", "urlp", acl_parse_reg, acl_match_reg },
10040 { "urlp_sub", "urlp", acl_parse_str, acl_match_sub },
10041 { "urlp_val", "urlp_val", acl_parse_int, acl_match_int },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10042
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10043 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10044}};
10045
10046/************************************************************************/
10047/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10048/************************************************************************/
10049/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10050static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10051 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10052 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10053 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10054
10055 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10056 * are only here to match the ACL's name, are request-only and are used
10057 * for ACL compatibility only.
10058 */
10059 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10060 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10061 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10062 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10063
10064 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10065 * only here to match the ACL's name, are request-only and are used for
10066 * ACL compatibility only.
10067 */
10068 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10069 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10070 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10071 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10072
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10073 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
10074 { "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]10075 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
10076 { "method", smp_fetch_meth, 0, NULL, SMP_T_UINT, SMP_USE_HRQHP },
10077 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10078
10079 /* HTTP protocol on the request path */
10080 { "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]10081 { "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]10082
10083 /* HTTP version on the request path */
10084 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10085 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10086
10087 /* HTTP version on the response path */
10088 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10089 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10090
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10091 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
10092 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10093 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10094 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10095
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10096 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10097 { "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]10098 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10099 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10100 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10101 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10102
10103 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
10104 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10105 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10106 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10107
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10108 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10109 { "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]10110 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10111 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10112 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10113 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10114
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10115 /* scook is valid only on the response and is used for ACL compatibility */
10116 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10117 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10118 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10119 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
10120
10121 /* shdr is valid only on the response and is used for ACL compatibility */
10122 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10123 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10124 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10125 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10126
10127 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
10128 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
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
10138__attribute__((constructor))
10139static void __http_protocol_init(void)
10140{
10141 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10142 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10143}
10144
10145
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10146/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10147 * Local variables:
10148 * c-indent-level: 8
10149 * c-basic-offset: 8
10150 * End:
10151 */