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git01.mediatek.com / haproxy / 434c57c95cd8c99e4bb4865bee427d62063f0f3a / . / src / proto_http.c
blob: 56d8dd6ddab24710b6bbea2a2ff3402289943fcf [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 Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]491/* Find the end of the header value contained between <s> and <e>. See RFC2616,
492 * par 2.2 for more information. Note that it requires a valid header to return
493 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]494 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]495char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]496{
497 int quoted, qdpair;
498
499 quoted = qdpair = 0;
500 for (; s < e; s++) {
501 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]502 else if (quoted) {
503 if (*s == '\\') qdpair = 1;
504 else if (*s == '"') quoted = 0;
505 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]506 else if (*s == '"') quoted = 1;
507 else if (*s == ',') return s;
508 }
509 return s;
510}
511
512/* Find the first or next occurrence of header <name> in message buffer <sol>
513 * using headers index <idx>, and return it in the <ctx> structure. This
514 * structure holds everything necessary to use the header and find next
515 * occurrence. If its <idx> member is 0, the header is searched from the
516 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]517 * 1 when it finds a value, and 0 when there is no more. It is designed to work
518 * with headers defined as comma-separated lists. As a special case, if ctx->val
519 * is NULL when searching for a new values of a header, the current header is
520 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]521 */
522int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]523 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]524 struct hdr_ctx *ctx)
525{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]526 char *eol, *sov;
527 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]528
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]529 cur_idx = ctx->idx;
530 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]531 /* We have previously returned a value, let's search
532 * another one on the same line.
533 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]534 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]535 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]536 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]537 eol = sol + idx->v[cur_idx].len;
538
539 if (sov >= eol)
540 /* no more values in this header */
541 goto next_hdr;
542
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]543 /* values remaining for this header, skip the comma but save it
544 * for later use (eg: for header deletion).
545 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]546 sov++;
547 while (sov < eol && http_is_lws[(unsigned char)*sov])
548 sov++;
549
550 goto return_hdr;
551 }
552
553 /* first request for this header */
554 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]555 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]556 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]557 while (cur_idx) {
558 eol = sol + idx->v[cur_idx].len;
559
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]560 if (len == 0) {
561 /* No argument was passed, we want any header.
562 * To achieve this, we simply build a fake request. */
563 while (sol + len < eol && sol[len] != ':')
564 len++;
565 name = sol;
566 }
567
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]568 if ((len < eol - sol) &&
569 (sol[len] == ':') &&
570 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]571 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]572 sov = sol + len + 1;
573 while (sov < eol && http_is_lws[(unsigned char)*sov])
574 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]575
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]576 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]577 ctx->prev = old_idx;
578 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]579 ctx->idx = cur_idx;
580 ctx->val = sov - sol;
581
582 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]583 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]584 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]585 eol--;
586 ctx->tws++;
587 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]588 ctx->vlen = eol - sov;
589 return 1;
590 }
591 next_hdr:
592 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]593 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]594 cur_idx = idx->v[cur_idx].next;
595 }
596 return 0;
597}
598
599int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]600 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]601 struct hdr_ctx *ctx)
602{
603 return http_find_header2(name, strlen(name), sol, idx, ctx);
604}
605
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]606/* Remove one value of a header. This only works on a <ctx> returned by one of
607 * the http_find_header functions. The value is removed, as well as surrounding
608 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]609 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]610 * message <msg>. The new index is returned. If it is zero, it means there is
611 * no more header, so any processing may stop. The ctx is always left in a form
612 * that can be handled by http_find_header2() to find next occurrence.
613 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]614int 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]615{
616 int cur_idx = ctx->idx;
617 char *sol = ctx->line;
618 struct hdr_idx_elem *hdr;
619 int delta, skip_comma;
620
621 if (!cur_idx)
622 return 0;
623
624 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]625 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]626 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]627 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]628 http_msg_move_end(msg, delta);
629 idx->used--;
630 hdr->len = 0; /* unused entry */
631 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]632 if (idx->tail == ctx->idx)
633 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]634 ctx->idx = ctx->prev; /* walk back to the end of previous header */
635 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
636 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]637 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]638 return ctx->idx;
639 }
640
641 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]642 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
643 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]644 */
645
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]646 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]647 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]648 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]649 NULL, 0);
650 hdr->len += delta;
651 http_msg_move_end(msg, delta);
652 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]653 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]654 return ctx->idx;
655}
656
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]657/* This function handles a server error at the stream interface level. The
658 * stream interface is assumed to be already in a closed state. An optional
659 * message is copied into the input buffer, and an HTTP status code stored.
660 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]661 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]662 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]663static void http_server_error(struct session *t, struct stream_interface *si,
664 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]665{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]666 channel_auto_read(si->ob);
667 channel_abort(si->ob);
668 channel_auto_close(si->ob);
669 channel_erase(si->ob);
670 channel_auto_close(si->ib);
671 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]672 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]673 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]674 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]675 }
676 if (!(t->flags & SN_ERR_MASK))
677 t->flags |= err;
678 if (!(t->flags & SN_FINST_MASK))
679 t->flags |= finst;
680}
681
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]682/* This function returns the appropriate error location for the given session
683 * and message.
684 */
685
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]686struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]687{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]688 if (s->be->errmsg[msgnum].str)
689 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]690 else if (s->fe->errmsg[msgnum].str)
691 return &s->fe->errmsg[msgnum];
692 else
693 return &http_err_chunks[msgnum];
694}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]695
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696/*
697 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
698 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
699 */
700static http_meth_t find_http_meth(const char *str, const int len)
701{
702 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]703 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]704
705 m = ((unsigned)*str - 'A');
706
707 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]708 for (h = http_methods[m]; h->len > 0; h++) {
709 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]710 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]711 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]712 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]713 };
714 return HTTP_METH_OTHER;
715 }
716 return HTTP_METH_NONE;
717
718}
719
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]720/* Parse the URI from the given transaction (which is assumed to be in request
721 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
722 * It is returned otherwise.
723 */
724static char *
725http_get_path(struct http_txn *txn)
726{
727 char *ptr, *end;
728
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]729 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]730 end = ptr + txn->req.sl.rq.u_l;
731
732 if (ptr >= end)
733 return NULL;
734
735 /* RFC2616, par. 5.1.2 :
736 * Request-URI = "*" | absuri | abspath | authority
737 */
738
739 if (*ptr == '*')
740 return NULL;
741
742 if (isalpha((unsigned char)*ptr)) {
743 /* this is a scheme as described by RFC3986, par. 3.1 */
744 ptr++;
745 while (ptr < end &&
746 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
747 ptr++;
748 /* skip '://' */
749 if (ptr == end || *ptr++ != ':')
750 return NULL;
751 if (ptr == end || *ptr++ != '/')
752 return NULL;
753 if (ptr == end || *ptr++ != '/')
754 return NULL;
755 }
756 /* skip [user[:passwd]@]host[:[port]] */
757
758 while (ptr < end && *ptr != '/')
759 ptr++;
760
761 if (ptr == end)
762 return NULL;
763
764 /* OK, we got the '/' ! */
765 return ptr;
766}
767
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]768/* Returns a 302 for a redirectable request that reaches a server working in
769 * in redirect mode. This may only be called just after the stream interface
770 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
771 * follow normal proxy processing. NOTE: this function is designed to support
772 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]773 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]774void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]775{
776 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]777 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]778 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]779 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]780
781 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]782 trash.len = strlen(HTTP_302);
783 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]784
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]785 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]786
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]787 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]788 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]789 return;
790
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]791 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]792 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]793 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
794 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]795 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]796
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]797 /* 3: add the request URI. Since it was already forwarded, we need
798 * to temporarily rewind the buffer.
799 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]800 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]801 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]802
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]803 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]804 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]805
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]806 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]807
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]808 if (!path)
809 return;
810
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]811 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]812 return;
813
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]814 memcpy(trash.str + trash.len, path, len);
815 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]816
817 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]818 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
819 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]820 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]821 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
822 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]823 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]824
825 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]826 si_shutr(si);
827 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]828 si->err_type = SI_ET_NONE;
829 si->err_loc = NULL;
830 si->state = SI_ST_CLO;
831
832 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]833 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]834
835 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]836 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]837}
838
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]839/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]840 * that the server side is closed. Note that err_type is actually a
841 * bitmask, where almost only aborts may be cumulated with other
842 * values. We consider that aborted operations are more important
843 * than timeouts or errors due to the fact that nobody else in the
844 * logs might explain incomplete retries. All others should avoid
845 * being cumulated. It should normally not be possible to have multiple
846 * aborts at once, but just in case, the first one in sequence is reported.
847 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]848void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]849{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]850 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]851
852 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]853 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]854 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]855 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]856 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]857 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]858 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]859 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]860 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]861 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]862 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]863 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]864 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]865 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]866 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]867 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]868 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]869 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]870 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]871 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]872 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]873}
874
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]875extern const char sess_term_cond[8];
876extern const char sess_fin_state[8];
877extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]878struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]879struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]880struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]881
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]882/*
883 * Capture headers from message starting at <som> according to header list
884 * <cap_hdr>, and fill the <idx> structure appropriately.
885 */
886void capture_headers(char *som, struct hdr_idx *idx,
887 char **cap, struct cap_hdr *cap_hdr)
888{
889 char *eol, *sol, *col, *sov;
890 int cur_idx;
891 struct cap_hdr *h;
892 int len;
893
894 sol = som + hdr_idx_first_pos(idx);
895 cur_idx = hdr_idx_first_idx(idx);
896
897 while (cur_idx) {
898 eol = sol + idx->v[cur_idx].len;
899
900 col = sol;
901 while (col < eol && *col != ':')
902 col++;
903
904 sov = col + 1;
905 while (sov < eol && http_is_lws[(unsigned char)*sov])
906 sov++;
907
908 for (h = cap_hdr; h; h = h->next) {
909 if ((h->namelen == col - sol) &&
910 (strncasecmp(sol, h->name, h->namelen) == 0)) {
911 if (cap[h->index] == NULL)
912 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]913 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]914
915 if (cap[h->index] == NULL) {
916 Alert("HTTP capture : out of memory.\n");
917 continue;
918 }
919
920 len = eol - sov;
921 if (len > h->len)
922 len = h->len;
923
924 memcpy(cap[h->index], sov, len);
925 cap[h->index][len]=0;
926 }
927 }
928 sol = eol + idx->v[cur_idx].cr + 1;
929 cur_idx = idx->v[cur_idx].next;
930 }
931}
932
933
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]934/* either we find an LF at <ptr> or we jump to <bad>.
935 */
936#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
937
938/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
939 * otherwise to <http_msg_ood> with <state> set to <st>.
940 */
941#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
942 ptr++; \
943 if (likely(ptr < end)) \
944 goto good; \
945 else { \
946 state = (st); \
947 goto http_msg_ood; \
948 } \
949 } while (0)
950
951
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]952/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]953 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]954 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
955 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
956 * will give undefined results.
957 * Note that it is upon the caller's responsibility to ensure that ptr < end,
958 * and that msg->sol points to the beginning of the response.
959 * If a complete line is found (which implies that at least one CR or LF is
960 * found before <end>, the updated <ptr> is returned, otherwise NULL is
961 * returned indicating an incomplete line (which does not mean that parts have
962 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
963 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
964 * upon next call.
965 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]966 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]967 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
968 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]969 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]970 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]971const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]972 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]973 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]974{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]975 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]976
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]977 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]978 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]979 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]980 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]981 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
982
983 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]984 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]985 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
986 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]987 state = HTTP_MSG_ERROR;
988 break;
989
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]990 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]991 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]992 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]993 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]994 goto http_msg_rpcode;
995 }
996 if (likely(HTTP_IS_SPHT(*ptr)))
997 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
998 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]999 state = HTTP_MSG_ERROR;
1000 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1001
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1002 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1003 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1004 if (likely(!HTTP_IS_LWS(*ptr)))
1005 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1006
1007 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1008 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1009 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1010 }
1011
1012 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1013 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1014 http_msg_rsp_reason:
1015 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1016 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1017 msg->sl.st.r_l = 0;
1018 goto http_msg_rpline_eol;
1019
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1020 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1021 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1022 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1023 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1024 goto http_msg_rpreason;
1025 }
1026 if (likely(HTTP_IS_SPHT(*ptr)))
1027 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1028 /* so it's a CR/LF, so there is no reason phrase */
1029 goto http_msg_rsp_reason;
1030
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1031 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1032 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1033 if (likely(!HTTP_IS_CRLF(*ptr)))
1034 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1035 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1036 http_msg_rpline_eol:
1037 /* We have seen the end of line. Note that we do not
1038 * necessarily have the \n yet, but at least we know that we
1039 * have EITHER \r OR \n, otherwise the response would not be
1040 * complete. We can then record the response length and return
1041 * to the caller which will be able to register it.
1042 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1043 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1044 return ptr;
1045
1046#ifdef DEBUG_FULL
1047 default:
1048 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1049 exit(1);
1050#endif
1051 }
1052
1053 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1054 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1055 if (ret_state)
1056 *ret_state = state;
1057 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1058 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1059 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1060}
1061
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1062/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1063 * This function parses a request line between <ptr> and <end>, starting with
1064 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1065 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1066 * will give undefined results.
1067 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1068 * and that msg->sol points to the beginning of the request.
1069 * If a complete line is found (which implies that at least one CR or LF is
1070 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1071 * returned indicating an incomplete line (which does not mean that parts have
1072 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1073 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1074 * upon next call.
1075 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1076 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1077 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1078 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1079 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1080 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1081const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1082 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1083 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1084{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1085 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1086
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1087 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1089 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1090 if (likely(HTTP_IS_TOKEN(*ptr)))
1091 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1092
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1094 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1095 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1096 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1097
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 if (likely(HTTP_IS_CRLF(*ptr))) {
1099 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1100 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1102 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1103 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1104 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1105 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1106 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1107 msg->sl.rq.v_l = 0;
1108 goto http_msg_rqline_eol;
1109 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1110 state = HTTP_MSG_ERROR;
1111 break;
1112
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1113 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1114 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1115 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1116 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 goto http_msg_rquri;
1118 }
1119 if (likely(HTTP_IS_SPHT(*ptr)))
1120 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1121 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1122 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1123
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1124 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1125 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1126 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1127 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1128
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1129 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1130 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1131 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1132 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1133
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1134 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1135 /* non-ASCII chars are forbidden unless option
1136 * accept-invalid-http-request is enabled in the frontend.
1137 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1138 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1139 if (msg->err_pos < -1)
1140 goto invalid_char;
1141 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1142 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1143 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1144 }
1145
1146 if (likely(HTTP_IS_CRLF(*ptr))) {
1147 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1148 goto http_msg_req09_uri_e;
1149 }
1150
1151 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1152 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1153 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1154 state = HTTP_MSG_ERROR;
1155 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1156
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1157 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1158 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1159 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1160 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1161 goto http_msg_rqver;
1162 }
1163 if (likely(HTTP_IS_SPHT(*ptr)))
1164 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1165 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1166 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1167
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1168 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1169 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1170 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1171 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1172
1173 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1174 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1175 http_msg_rqline_eol:
1176 /* We have seen the end of line. Note that we do not
1177 * necessarily have the \n yet, but at least we know that we
1178 * have EITHER \r OR \n, otherwise the request would not be
1179 * complete. We can then record the request length and return
1180 * to the caller which will be able to register it.
1181 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1182 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1183 return ptr;
1184 }
1185
1186 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1187 state = HTTP_MSG_ERROR;
1188 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1189
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1190#ifdef DEBUG_FULL
1191 default:
1192 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1193 exit(1);
1194#endif
1195 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1196
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1197 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1198 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1199 if (ret_state)
1200 *ret_state = state;
1201 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1202 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1203 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1204}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1205
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1206/*
1207 * Returns the data from Authorization header. Function may be called more
1208 * than once so data is stored in txn->auth_data. When no header is found
1209 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1210 * searching again for something we are unable to find anyway.
1211 */
1212
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1213char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1214
1215int
1216get_http_auth(struct session *s)
1217{
1218
1219 struct http_txn *txn = &s->txn;
1220 struct chunk auth_method;
1221 struct hdr_ctx ctx;
1222 char *h, *p;
1223 int len;
1224
1225#ifdef DEBUG_AUTH
1226 printf("Auth for session %p: %d\n", s, txn->auth.method);
1227#endif
1228
1229 if (txn->auth.method == HTTP_AUTH_WRONG)
1230 return 0;
1231
1232 if (txn->auth.method)
1233 return 1;
1234
1235 txn->auth.method = HTTP_AUTH_WRONG;
1236
1237 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1238
1239 if (txn->flags & TX_USE_PX_CONN) {
1240 h = "Proxy-Authorization";
1241 len = strlen(h);
1242 } else {
1243 h = "Authorization";
1244 len = strlen(h);
1245 }
1246
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1247 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]1248 return 0;
1249
1250 h = ctx.line + ctx.val;
1251
1252 p = memchr(h, ' ', ctx.vlen);
1253 if (!p || p == h)
1254 return 0;
1255
1256 chunk_initlen(&auth_method, h, 0, p-h);
1257 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1258
1259 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1260
1261 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1262 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1263
1264 if (len < 0)
1265 return 0;
1266
1267
1268 get_http_auth_buff[len] = '\0';
1269
1270 p = strchr(get_http_auth_buff, ':');
1271
1272 if (!p)
1273 return 0;
1274
1275 txn->auth.user = get_http_auth_buff;
1276 *p = '\0';
1277 txn->auth.pass = p+1;
1278
1279 txn->auth.method = HTTP_AUTH_BASIC;
1280 return 1;
1281 }
1282
1283 return 0;
1284}
1285
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1286
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1287/*
1288 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1289 * depending on the initial msg->msg_state. The caller is responsible for
1290 * ensuring that the message does not wrap. The function can be preempted
1291 * everywhere when data are missing and recalled at the exact same location
1292 * with no information loss. The message may even be realigned between two
1293 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1294 * 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]1295 * fields. Note that msg->sol will be initialized after completing the first
1296 * state, so that none of the msg pointers has to be initialized prior to the
1297 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1298 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1299void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1300{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1301 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1302 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1303 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1304
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1305 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1306 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1307 ptr = buf->p + msg->next;
1308 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1309
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1310 if (unlikely(ptr >= end))
1311 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1312
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1313 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1314 /*
1315 * First, states that are specific to the response only.
1316 * We check them first so that request and headers are
1317 * closer to each other (accessed more often).
1318 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1319 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1320 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1321 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1322 /* we have a start of message, but we have to check
1323 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1324 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1325 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1326 if (unlikely(ptr != buf->p)) {
1327 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1328 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1329 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1330 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1331 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1332 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1333 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1334 hdr_idx_init(idx);
1335 state = HTTP_MSG_RPVER;
1336 goto http_msg_rpver;
1337 }
1338
1339 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1340 goto http_msg_invalid;
1341
1342 if (unlikely(*ptr == '\n'))
1343 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1344 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1345 /* stop here */
1346
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1347 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1348 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1349 EXPECT_LF_HERE(ptr, http_msg_invalid);
1350 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1351 /* stop here */
1352
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1354 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1355 case HTTP_MSG_RPVER_SP:
1356 case HTTP_MSG_RPCODE:
1357 case HTTP_MSG_RPCODE_SP:
1358 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1359 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1360 state, ptr, end,
1361 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 if (unlikely(!ptr))
1363 return;
1364
1365 /* we have a full response and we know that we have either a CR
1366 * or an LF at <ptr>.
1367 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1368 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1369
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1370 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1371 if (likely(*ptr == '\r'))
1372 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1373 goto http_msg_rpline_end;
1374
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1375 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1376 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1377 /* msg->sol must point to the first of CR or LF. */
1378 EXPECT_LF_HERE(ptr, http_msg_invalid);
1379 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1380 /* stop here */
1381
1382 /*
1383 * Second, states that are specific to the request only
1384 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1385 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1386 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1387 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1388 /* we have a start of message, but we have to check
1389 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1390 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1391 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1392 if (likely(ptr != buf->p)) {
1393 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1394 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1395 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1396 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1398 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1399 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 state = HTTP_MSG_RQMETH;
1401 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1402 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1403
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1405 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1406
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1407 if (unlikely(*ptr == '\n'))
1408 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1409 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1410 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1411
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1413 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1414 EXPECT_LF_HERE(ptr, http_msg_invalid);
1415 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1416 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1417
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1419 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1420 case HTTP_MSG_RQMETH_SP:
1421 case HTTP_MSG_RQURI:
1422 case HTTP_MSG_RQURI_SP:
1423 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1424 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1425 state, ptr, end,
1426 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 if (unlikely(!ptr))
1428 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 /* we have a full request and we know that we have either a CR
1431 * or an LF at <ptr>.
1432 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1434
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1435 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1436 if (likely(*ptr == '\r'))
1437 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1438 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1441 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1442 /* check for HTTP/0.9 request : no version information available.
1443 * msg->sol must point to the first of CR or LF.
1444 */
1445 if (unlikely(msg->sl.rq.v_l == 0))
1446 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1447
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1448 EXPECT_LF_HERE(ptr, http_msg_invalid);
1449 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1450 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1451
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1452 /*
1453 * Common states below
1454 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1455 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1456 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1457 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 if (likely(!HTTP_IS_CRLF(*ptr))) {
1459 goto http_msg_hdr_name;
1460 }
1461
1462 if (likely(*ptr == '\r'))
1463 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1464 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1465
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1466 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1467 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1468 /* assumes msg->sol points to the first char */
1469 if (likely(HTTP_IS_TOKEN(*ptr)))
1470 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1471
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1472 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 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]1474
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1475 if (likely(msg->err_pos < -1) || *ptr == '\n')
1476 goto http_msg_invalid;
1477
1478 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1479 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1480
1481 /* and we still accept this non-token character */
1482 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1483
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1484 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1485 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1486 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 if (likely(HTTP_IS_SPHT(*ptr)))
1488 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]1489
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1490 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1491 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1492
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 if (likely(!HTTP_IS_CRLF(*ptr))) {
1494 goto http_msg_hdr_val;
1495 }
1496
1497 if (likely(*ptr == '\r'))
1498 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1499 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1500
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1502 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 EXPECT_LF_HERE(ptr, http_msg_invalid);
1504 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]1505
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1507 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 if (likely(HTTP_IS_SPHT(*ptr))) {
1509 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1510 for (; buf->p + msg->sov < ptr; msg->sov++)
1511 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 goto http_msg_hdr_l1_sp;
1513 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1514 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1515 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 goto http_msg_complete_header;
1517
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1519 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1520 /* assumes msg->sol points to the first char, and msg->sov
1521 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 */
1523 if (likely(!HTTP_IS_CRLF(*ptr)))
1524 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1525
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1526 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 /* Note: we could also copy eol into ->eoh so that we have the
1528 * real header end in case it ends with lots of LWS, but is this
1529 * really needed ?
1530 */
1531 if (likely(*ptr == '\r'))
1532 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1533 goto http_msg_hdr_l2_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_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1536 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537 EXPECT_LF_HERE(ptr, http_msg_invalid);
1538 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]1539
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1540 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1541 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1543 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1544 for (; buf->p + msg->eol < ptr; msg->eol++)
1545 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 goto http_msg_hdr_val;
1547 }
1548 http_msg_complete_header:
1549 /*
1550 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1551 * Assumes msg->sol points to the first char, msg->sov points
1552 * to the first character of the value and msg->eol to the
1553 * first CR or LF so we know how the line ends. We insert last
1554 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1555 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1556 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1557 idx, idx->tail) < 0))
1558 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1559
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1560 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1561 if (likely(!HTTP_IS_CRLF(*ptr))) {
1562 goto http_msg_hdr_name;
1563 }
1564
1565 if (likely(*ptr == '\r'))
1566 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1567 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1568
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1570 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1571 /* Assumes msg->sol points to the first of either CR or LF */
1572 EXPECT_LF_HERE(ptr, http_msg_invalid);
1573 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1574 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1575 msg->eoh = msg->sol;
1576 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1577 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1578 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1579
1580 case HTTP_MSG_ERROR:
1581 /* this may only happen if we call http_msg_analyser() twice with an error */
1582 break;
1583
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1584#ifdef DEBUG_FULL
1585 default:
1586 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1587 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1588#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1589 }
1590 http_msg_ood:
1591 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1592 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1593 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1594 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1595
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 http_msg_invalid:
1597 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1598 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1599 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1600 return;
1601}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1602
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1603/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1604 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1605 * nothing is done and 1 is returned.
1606 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1607static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1608{
1609 int delta;
1610 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1611 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1612
1613 if (msg->sl.rq.v_l != 0)
1614 return 1;
1615
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1616 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1617 delta = 0;
1618
1619 if (msg->sl.rq.u_l == 0) {
1620 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1621 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1622 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1623 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1624 }
1625 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1626 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]1627 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1628 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1629 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1630 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1631 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1632 NULL, NULL);
1633 if (unlikely(!cur_end))
1634 return 0;
1635
1636 /* we have a full HTTP/1.0 request now and we know that
1637 * we have either a CR or an LF at <ptr>.
1638 */
1639 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1640 return 1;
1641}
1642
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1643/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1644 * and "keep-alive" values. If we already know that some headers may safely
1645 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1646 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1647 * - 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]1648 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1649 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1650 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1651 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1652 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1653 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1654void 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]1655{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1656 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1657 const char *hdr_val = "Connection";
1658 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1659
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1660 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1661 return;
1662
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1663 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1664 hdr_val = "Proxy-Connection";
1665 hdr_len = 16;
1666 }
1667
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1668 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1669 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1670 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]1671 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1672 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1673 if (to_del & 2)
1674 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1675 else
1676 txn->flags |= TX_CON_KAL_SET;
1677 }
1678 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1679 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1680 if (to_del & 1)
1681 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1682 else
1683 txn->flags |= TX_CON_CLO_SET;
1684 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1685 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1686 txn->flags |= TX_HDR_CONN_UPG;
1687 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1688 }
1689
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1690 txn->flags |= TX_HDR_CONN_PRS;
1691 return;
1692}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1693
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1694/* Apply desired changes on the Connection: header. Values may be removed and/or
1695 * added depending on the <wanted> flags, which are exclusively composed of
1696 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1697 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1698 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1699void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1700{
1701 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1702 const char *hdr_val = "Connection";
1703 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1704
1705 ctx.idx = 0;
1706
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1707
1708 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1709 hdr_val = "Proxy-Connection";
1710 hdr_len = 16;
1711 }
1712
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1713 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1714 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]1715 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1716 if (wanted & TX_CON_KAL_SET)
1717 txn->flags |= TX_CON_KAL_SET;
1718 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1719 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1720 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1721 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1722 if (wanted & TX_CON_CLO_SET)
1723 txn->flags |= TX_CON_CLO_SET;
1724 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1725 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1726 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1727 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1728
1729 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1730 return;
1731
1732 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1733 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1734 hdr_val = "Connection: close";
1735 hdr_len = 17;
1736 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1737 hdr_val = "Proxy-Connection: close";
1738 hdr_len = 23;
1739 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1740 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1741 }
1742
1743 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1744 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1745 hdr_val = "Connection: keep-alive";
1746 hdr_len = 22;
1747 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1748 hdr_val = "Proxy-Connection: keep-alive";
1749 hdr_len = 28;
1750 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1751 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1752 }
1753 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1754}
1755
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1756/* 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]1757 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1758 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1759 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1760 * 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]1761 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1762static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1763{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1764 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1765 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1766 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1767 const char *end = buf->data + buf->size;
1768 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1769 unsigned int chunk = 0;
1770
1771 /* The chunk size is in the following form, though we are only
1772 * interested in the size and CRLF :
1773 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1774 */
1775 while (1) {
1776 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1777 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1778 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1779 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1780 if (c < 0) /* not a hex digit anymore */
1781 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1782 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1783 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1784 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1785 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1786 chunk = (chunk << 4) + c;
1787 }
1788
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1789 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1790 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1791 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1792
1793 while (http_is_spht[(unsigned char)*ptr]) {
1794 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1795 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1796 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1797 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1798 }
1799
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1800 /* Up to there, we know that at least one byte is present at *ptr. Check
1801 * for the end of chunk size.
1802 */
1803 while (1) {
1804 if (likely(HTTP_IS_CRLF(*ptr))) {
1805 /* we now have a CR or an LF at ptr */
1806 if (likely(*ptr == '\r')) {
1807 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1808 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1809 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1810 return 0;
1811 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1812
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1813 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1814 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1815 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1816 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1817 /* done */
1818 break;
1819 }
1820 else if (*ptr == ';') {
1821 /* chunk extension, ends at next CRLF */
1822 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1823 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1824 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1825 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826
1827 while (!HTTP_IS_CRLF(*ptr)) {
1828 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1829 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1830 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1831 return 0;
1832 }
1833 /* we have a CRLF now, loop above */
1834 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1835 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1836 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1837 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1838 }
1839
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1840 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1841 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1842 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1843 */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1844 if (unlikely(ptr < ptr_old))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1845 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1846 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1847 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1848 msg->chunk_len = chunk;
1849 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1850 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1851 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1852 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1853 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1854 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1855}
1856
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1857/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1858 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1859 * the trailers is found, it is automatically scheduled to be forwarded,
1860 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1861 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1862 * 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]1863 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1864 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1865 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1866 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1867 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1868 * matches the length of trailers already parsed and not forwarded. It is also
1869 * important to note that this function is designed to be able to parse wrapped
1870 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1871 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1872static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1873{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1874 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1875
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1876 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1877 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1878 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1879 const char *ptr = b_ptr(buf, msg->next);
1880 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1881 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1882
1883 /* scan current line and stop at LF or CRLF */
1884 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1885 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1886 return 0;
1887
1888 if (*ptr == '\n') {
1889 if (!p1)
1890 p1 = ptr;
1891 p2 = ptr;
1892 break;
1893 }
1894
1895 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1896 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1897 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1898 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1899 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1900 p1 = ptr;
1901 }
1902
1903 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1904 if (ptr >= buf->data + buf->size)
1905 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1906 }
1907
1908 /* after LF; point to beginning of next line */
1909 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1910 if (p2 >= buf->data + buf->size)
1911 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1912
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1913 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1914 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1915 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1916
1917 /* schedule this line for forwarding */
1918 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1919 if (msg->sov >= buf->size)
1920 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1921
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1922 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1923 /* LF/CRLF at beginning of line => end of trailers at p2.
1924 * Everything was scheduled for forwarding, there's nothing
1925 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1926 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1927 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1928 msg->msg_state = HTTP_MSG_DONE;
1929 return 1;
1930 }
1931 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1932 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1933 }
1934}
1935
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1936/* 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]1937 * 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]1938 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1939 * 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]1940 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1941 * not enough data are available, the function does not change anything and
1942 * returns zero. If a parse error is encountered, the function returns < 0 and
1943 * does not change anything. Note: this function is designed to parse wrapped
1944 * CRLF at the end of the buffer.
1945 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1946static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1947{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1948 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1949 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1950 int bytes;
1951
1952 /* NB: we'll check data availabilty at the end. It's not a
1953 * problem because whatever we match first will be checked
1954 * against the correct length.
1955 */
1956 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1957 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1958 if (*ptr == '\r') {
1959 bytes++;
1960 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1961 if (ptr >= buf->data + buf->size)
1962 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1963 }
1964
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1965 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1966 return 0;
1967
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1968 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1969 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1970 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1971 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1972
1973 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1974 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1975 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1976 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1977 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1978 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1979 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1980 return 1;
1981}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1982
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1983
1984/*
1985 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1986 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1987int select_compression_request_header(struct session *s, struct buffer *req)
1988{
1989 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1990 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1991 struct hdr_ctx ctx;
1992 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1993 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1994
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1995 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1996 * 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]1997 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1998 */
1999 ctx.idx = 0;
2000 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2001 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2002 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2003 (ctx.vlen < 31 ||
2004 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2005 ctx.line[ctx.val + 30] < '6' ||
2006 (ctx.line[ctx.val + 30] == '6' &&
2007 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2008 s->comp_algo = NULL;
2009 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2010 }
2011
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2012 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2013 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]2014 ctx.idx = 0;
2015 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2016 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2017 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2018 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2019
2020 /* remove all occurrences of the header when "compression offload" is set */
2021
2022 if ((s->be->comp && s->be->comp->offload) ||
2023 (s->fe->comp && s->fe->comp->offload)) {
2024 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2025 ctx.idx = 0;
2026 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2027 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2028 }
2029 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2030 return 1;
2031 }
2032 }
2033 }
2034 }
2035
2036 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2037 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2038 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2039 if (comp_algo->add_data == identity_add_data) {
2040 s->comp_algo = comp_algo;
2041 return 1;
2042 }
2043 }
2044 }
2045
2046 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2047 return 0;
2048}
2049
2050/*
2051 * Selects a comression algorithm depending of the server response.
2052 */
2053int select_compression_response_header(struct session *s, struct buffer *res)
2054{
2055 struct http_txn *txn = &s->txn;
2056 struct http_msg *msg = &txn->rsp;
2057 struct hdr_ctx ctx;
2058 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2059
2060 /* no common compression algorithm was found in request header */
2061 if (s->comp_algo == NULL)
2062 goto fail;
2063
2064 /* HTTP < 1.1 should not be compressed */
2065 if (!(msg->flags & HTTP_MSGF_VER_11))
2066 goto fail;
2067
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2068 /* 200 only */
2069 if (txn->status != 200)
2070 goto fail;
2071
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2072 /* Content-Length is null */
2073 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2074 goto fail;
2075
2076 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2077 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2078 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2079 goto fail;
2080
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2081 /* no compression when Cache-Control: no-transform is present in the message */
2082 ctx.idx = 0;
2083 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2084 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2085 goto fail;
2086 }
2087
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2088 comp_type = NULL;
2089
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2090 /* we don't want to compress multipart content-types, nor content-types that are
2091 * not listed in the "compression type" directive if any. If no content-type was
2092 * found but configuration requires one, we don't compress either. Backend has
2093 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2094 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2095 ctx.idx = 0;
2096 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2097 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2098 goto fail;
2099
2100 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2101 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2102 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2103 if (ctx.vlen >= comp_type->name_len &&
2104 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2105 /* this Content-Type should be compressed */
2106 break;
2107 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2108 /* this Content-Type should not be compressed */
2109 if (comp_type == NULL)
2110 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2111 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2112 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2113 else { /* no content-type header */
2114 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2115 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2116 }
2117
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2118 /* limit compression rate */
2119 if (global.comp_rate_lim > 0)
2120 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2121 goto fail;
2122
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2123 /* limit cpu usage */
2124 if (idle_pct < compress_min_idle)
2125 goto fail;
2126
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2127 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2128 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2129 goto fail;
2130
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2131 s->flags |= SN_COMP_READY;
2132
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2133 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2134 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2135 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2136 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2137
2138 /* add Transfer-Encoding header */
2139 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2140 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2141
2142 /*
2143 * Add Content-Encoding header when it's not identity encoding.
2144 * RFC 2616 : Identity encoding: This content-coding is used only in the
2145 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2146 * header.
2147 */
2148 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2149 trash.len = 18;
2150 memcpy(trash.str, "Content-Encoding: ", trash.len);
2151 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2152 trash.len += s->comp_algo->name_len;
2153 trash.str[trash.len] = '\0';
2154 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2155 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2156 return 1;
2157
2158fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2159 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2160 return 0;
2161}
2162
2163
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2164/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2165 * processing can continue on next analysers, or zero if it either needs more
2166 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2167 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2168 * when it has nothing left to do, and may remove any analyser when it wants to
2169 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2170 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2171int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2172{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2173 /*
2174 * We will parse the partial (or complete) lines.
2175 * We will check the request syntax, and also join multi-line
2176 * headers. An index of all the lines will be elaborated while
2177 * parsing.
2178 *
2179 * For the parsing, we use a 28 states FSM.
2180 *
2181 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2182 * req->buf->p = beginning of request
2183 * req->buf->p + msg->eoh = end of processed headers / start of current one
2184 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2185 * msg->eol = end of current header or line (LF or CRLF)
2186 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2187 *
2188 * At end of parsing, we may perform a capture of the error (if any), and
2189 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2190 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2191 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2192 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2193
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2194 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2195 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2196 struct http_txn *txn = &s->txn;
2197 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2198 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2199
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2200 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]2201 now_ms, __FUNCTION__,
2202 s,
2203 req,
2204 req->rex, req->wex,
2205 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2206 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2207 req->analysers);
2208
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2209 /* we're speaking HTTP here, so let's speak HTTP to the client */
2210 s->srv_error = http_return_srv_error;
2211
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2212 /* There's a protected area at the end of the buffer for rewriting
2213 * purposes. We don't want to start to parse the request if the
2214 * protected area is affected, because we may have to move processed
2215 * data later, which is much more complicated.
2216 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2217 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2218 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2219 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2220 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2221 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2222 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2223 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2224 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2225 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2226 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2227 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2228 return 0;
2229 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2230 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2231 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2232 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2233 }
2234
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2235 /* Note that we have the same problem with the response ; we
2236 * may want to send a redirect, error or anything which requires
2237 * some spare space. So we'll ensure that we have at least
2238 * maxrewrite bytes available in the response buffer before
2239 * processing that one. This will only affect pipelined
2240 * keep-alive requests.
2241 */
2242 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2243 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2244 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2245 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2246 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2247 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]2248 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2249 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2250 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2251 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2252 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2253 return 0;
2254 }
2255 }
2256
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2257 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2258 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2259 }
2260
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2261 /* 1: we might have to print this header in debug mode */
2262 if (unlikely((global.mode & MODE_DEBUG) &&
2263 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2264 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2266
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2267 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2268 /* this is a bit complex : in case of error on the request line,
2269 * we know that rq.l is still zero, so we display only the part
2270 * up to the end of the line (truncated by debug_hdr).
2271 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2272 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2273 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2274
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2275 sol += hdr_idx_first_pos(&txn->hdr_idx);
2276 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2277
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2278 while (cur_idx) {
2279 eol = sol + txn->hdr_idx.v[cur_idx].len;
2280 debug_hdr("clihdr", s, sol, eol);
2281 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2282 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2283 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2284 }
2285
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2286
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2287 /*
2288 * Now we quickly check if we have found a full valid request.
2289 * If not so, we check the FD and buffer states before leaving.
2290 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2291 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2292 * requests are checked first. When waiting for a second request
2293 * on a keep-alive session, if we encounter and error, close, t/o,
2294 * we note the error in the session flags but don't set any state.
2295 * Since the error will be noted there, it will not be counted by
2296 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2297 * Last, we may increase some tracked counters' http request errors on
2298 * the cases that are deliberately the client's fault. For instance,
2299 * a timeout or connection reset is not counted as an error. However
2300 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2301 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2302
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2303 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2304 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2305 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2306 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2307 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2308 session_inc_http_req_ctr(s);
2309 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2310 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2311 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2312 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2313
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2314 /* 1: Since we are in header mode, if there's no space
2315 * left for headers, we won't be able to free more
2316 * later, so the session will never terminate. We
2317 * must terminate it now.
2318 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2319 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 /* FIXME: check if URI is set and return Status
2321 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2322 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2323 session_inc_http_req_ctr(s);
2324 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2325 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2326 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2327 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2328 goto return_bad_req;
2329 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2332 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2333 if (!(s->flags & SN_ERR_MASK))
2334 s->flags |= SN_ERR_CLICL;
2335
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2336 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2337 goto failed_keep_alive;
2338
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2339 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2340 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2341 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]2342 session_inc_http_err_ctr(s);
2343 }
2344
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2345 txn->status = 400;
2346 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2347 msg->msg_state = HTTP_MSG_ERROR;
2348 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2349
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2350 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2351 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2352 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2353 if (s->listener->counters)
2354 s->listener->counters->failed_req++;
2355
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2356 if (!(s->flags & SN_FINST_MASK))
2357 s->flags |= SN_FINST_R;
2358 return 0;
2359 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2360
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2361 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2362 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]2363 if (!(s->flags & SN_ERR_MASK))
2364 s->flags |= SN_ERR_CLITO;
2365
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2366 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2367 goto failed_keep_alive;
2368
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2369 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2370 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2371 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]2372 session_inc_http_err_ctr(s);
2373 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2374 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2375 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2376 msg->msg_state = HTTP_MSG_ERROR;
2377 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2378
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2379 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2380 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2381 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2382 if (s->listener->counters)
2383 s->listener->counters->failed_req++;
2384
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2385 if (!(s->flags & SN_FINST_MASK))
2386 s->flags |= SN_FINST_R;
2387 return 0;
2388 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2389
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2390 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2391 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2392 if (!(s->flags & SN_ERR_MASK))
2393 s->flags |= SN_ERR_CLICL;
2394
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2395 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2396 goto failed_keep_alive;
2397
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2398 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2399 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]2400 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2401 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2402 msg->msg_state = HTTP_MSG_ERROR;
2403 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2404
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2405 session_inc_http_err_ctr(s);
2406 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2407 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2408 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2409 if (s->listener->counters)
2410 s->listener->counters->failed_req++;
2411
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2412 if (!(s->flags & SN_FINST_MASK))
2413 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2414 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2415 }
2416
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2417 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2418 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2419 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2420#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2421 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2422 /* We need more data, we have to re-enable quick-ack in case we
2423 * previously disabled it, otherwise we might cause the client
2424 * to delay next data.
2425 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2426 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]2427 }
2428#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2429
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2430 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2431 /* If the client starts to talk, let's fall back to
2432 * request timeout processing.
2433 */
2434 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2435 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2436 }
2437
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2438 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2439 if (!tick_isset(req->analyse_exp)) {
2440 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2441 (txn->flags & TX_WAIT_NEXT_RQ) &&
2442 tick_isset(s->be->timeout.httpka))
2443 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2444 else
2445 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2446 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2447
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2448 /* we're not ready yet */
2449 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2450
2451 failed_keep_alive:
2452 /* Here we process low-level errors for keep-alive requests. In
2453 * short, if the request is not the first one and it experiences
2454 * a timeout, read error or shutdown, we just silently close so
2455 * that the client can try again.
2456 */
2457 txn->status = 0;
2458 msg->msg_state = HTTP_MSG_RQBEFORE;
2459 req->analysers = 0;
2460 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2461 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2462 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2463 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2464 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2465
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2466 /* OK now we have a complete HTTP request with indexed headers. Let's
2467 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2468 * 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]2469 * 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]2470 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2471 * byte after the last LF. msg->sov points to the first byte of data.
2472 * msg->eol cannot be trusted because it may have been left uninitialized
2473 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2474 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2475
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2476 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2477 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2478
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2479 if (txn->flags & TX_WAIT_NEXT_RQ) {
2480 /* kill the pending keep-alive timeout */
2481 txn->flags &= ~TX_WAIT_NEXT_RQ;
2482 req->analyse_exp = TICK_ETERNITY;
2483 }
2484
2485
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2486 /* Maybe we found in invalid header name while we were configured not
2487 * to block on that, so we have to capture it now.
2488 */
2489 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2490 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]2491
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2492 /*
2493 * 1: identify the method
2494 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2495 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2496
2497 /* we can make use of server redirect on GET and HEAD */
2498 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2499 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2500
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2501 /*
2502 * 2: check if the URI matches the monitor_uri.
2503 * We have to do this for every request which gets in, because
2504 * the monitor-uri is defined by the frontend.
2505 */
2506 if (unlikely((s->fe->monitor_uri_len != 0) &&
2507 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2508 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2509 s->fe->monitor_uri,
2510 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2511 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2512 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2513 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2514 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2515
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2516 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2517 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2520 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2521 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]2522
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 ret = acl_pass(ret);
2524 if (cond->pol == ACL_COND_UNLESS)
2525 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2526
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2527 if (ret) {
2528 /* we fail this request, let's return 503 service unavail */
2529 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2530 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2531 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2532 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2533 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2534
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 /* nothing to fail, let's reply normaly */
2536 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2537 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2538 goto return_prx_cond;
2539 }
2540
2541 /*
2542 * 3: Maybe we have to copy the original REQURI for the logs ?
2543 * Note: we cannot log anymore if the request has been
2544 * classified as invalid.
2545 */
2546 if (unlikely(s->logs.logwait & LW_REQ)) {
2547 /* we have a complete HTTP request that we must log */
2548 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2549 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2550
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2551 if (urilen >= REQURI_LEN)
2552 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2553 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2554 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2555
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2556 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2557 s->do_log(s);
2558 } else {
2559 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2560 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2561 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2562
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2563 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
2564 s->unique_id = pool_alloc2(pool2_uniqueid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2565
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2566 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2567 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2568 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2569
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2570 /* ... and check if the request is HTTP/1.1 or above */
2571 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2572 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2573 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2574 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2575 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2576
2577 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2578 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]2579
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2580 /* if the frontend has "option http-use-proxy-header", we'll check if
2581 * we have what looks like a proxied connection instead of a connection,
2582 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2583 * Note that this is *not* RFC-compliant, however browsers and proxies
2584 * happen to do that despite being non-standard :-(
2585 * We consider that a request not beginning with either '/' or '*' is
2586 * a proxied connection, which covers both "scheme://location" and
2587 * CONNECT ip:port.
2588 */
2589 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2590 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2591 txn->flags |= TX_USE_PX_CONN;
2592
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2593 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2594 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2595
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2596 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2597 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2598 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2600
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2601 /* 6: determine the transfer-length.
2602 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2603 * the presence of a message-body in a REQUEST and its transfer length
2604 * must be determined that way (in order of precedence) :
2605 * 1. The presence of a message-body in a request is signaled by the
2606 * inclusion of a Content-Length or Transfer-Encoding header field
2607 * in the request's header fields. When a request message contains
2608 * both a message-body of non-zero length and a method that does
2609 * not define any semantics for that request message-body, then an
2610 * origin server SHOULD either ignore the message-body or respond
2611 * with an appropriate error message (e.g., 413). A proxy or
2612 * gateway, when presented the same request, SHOULD either forward
2613 * the request inbound with the message- body or ignore the
2614 * message-body when determining a response.
2615 *
2616 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2617 * and the "chunked" transfer-coding (Section 6.2) is used, the
2618 * transfer-length is defined by the use of this transfer-coding.
2619 * If a Transfer-Encoding header field is present and the "chunked"
2620 * transfer-coding is not present, the transfer-length is defined
2621 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2622 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2623 * 3. If a Content-Length header field is present, its decimal value in
2624 * OCTETs represents both the entity-length and the transfer-length.
2625 * If a message is received with both a Transfer-Encoding header
2626 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2627 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2628 * 4. By the server closing the connection. (Closing the connection
2629 * cannot be used to indicate the end of a request body, since that
2630 * would leave no possibility for the server to send back a response.)
2631 *
2632 * Whenever a transfer-coding is applied to a message-body, the set of
2633 * transfer-codings MUST include "chunked", unless the message indicates
2634 * it is terminated by closing the connection. When the "chunked"
2635 * transfer-coding is used, it MUST be the last transfer-coding applied
2636 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2637 */
2638
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2639 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2640 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2641 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2642 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2643 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2644 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2645 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2646 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2647 /* bad transfer-encoding (chunked followed by something else) */
2648 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2649 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2650 break;
2651 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2652 }
2653
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2654 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2655 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2656 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2657 signed long long cl;
2658
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2659 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2660 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2661 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2662 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2663
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2664 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2665 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2666 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2667 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2668
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2669 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2670 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2671 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2672 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2673
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2674 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2675 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2676 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2677 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2678
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2679 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2680 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2681 }
2682
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2683 /* bodyless requests have a known length */
2684 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2685 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2686
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2687 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2688 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2689 req->analyse_exp = TICK_ETERNITY;
2690 return 1;
2691
2692 return_bad_req:
2693 /* We centralize bad requests processing here */
2694 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2695 /* we detected a parsing error. We want to archive this request
2696 * in the dedicated proxy area for later troubleshooting.
2697 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2698 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]2699 }
2700
2701 txn->req.msg_state = HTTP_MSG_ERROR;
2702 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2703 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2704
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2705 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2706 if (s->listener->counters)
2707 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2708
2709 return_prx_cond:
2710 if (!(s->flags & SN_ERR_MASK))
2711 s->flags |= SN_ERR_PRXCOND;
2712 if (!(s->flags & SN_FINST_MASK))
2713 s->flags |= SN_FINST_R;
2714
2715 req->analysers = 0;
2716 req->analyse_exp = TICK_ETERNITY;
2717 return 0;
2718}
2719
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2720/* We reached the stats page through a POST request.
2721 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2722 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2723 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2724int 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]2725{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2726 struct proxy *px = NULL;
2727 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2728
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2729 char key[LINESIZE];
2730 int action = ST_ADM_ACTION_NONE;
2731 int reprocess = 0;
2732
2733 int total_servers = 0;
2734 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2735
2736 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2737 char *st_cur_param = NULL;
2738 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2739
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2740 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2741 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2742
2743 cur_param = next_param = end_params;
2744
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2745 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2746 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2747 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2748 return 1;
2749 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2750 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2751 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2752 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2753 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2754 }
2755
2756 *end_params = '\0';
2757
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2758 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2759
2760 /*
2761 * Parse the parameters in reverse order to only store the last value.
2762 * From the html form, the backend and the action are at the end.
2763 */
2764 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2765 char *value;
2766 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2767
2768 cur_param--;
2769 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2770 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2771 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2772 poffset = (cur_param != first_param ? 1 : 0);
2773 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2774 if ((plen > 0) && (plen <= sizeof(key))) {
2775 strncpy(key, cur_param + poffset, plen);
2776 key[plen - 1] = '\0';
2777 } else {
2778 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2779 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2780 }
2781
2782 /* Parse the value */
2783 value = key;
2784 while (*value != '\0' && *value != '=') {
2785 value++;
2786 }
2787 if (*value == '=') {
2788 /* Ok, a value is found, we can mark the end of the key */
2789 *value++ = '\0';
2790 }
2791
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2792 if (!url_decode(key) || !url_decode(value))
2793 break;
2794
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2795 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2796 if (!px && (strcmp(key, "b") == 0)) {
2797 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2798 /* the backend name is unknown or ambiguous (duplicate names) */
2799 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2800 goto out;
2801 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2802 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2803 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2804 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2805 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2806 }
2807 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2808 action = ST_ADM_ACTION_ENABLE;
2809 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2810 else if (strcmp(value, "stop") == 0) {
2811 action = ST_ADM_ACTION_STOP;
2812 }
2813 else if (strcmp(value, "start") == 0) {
2814 action = ST_ADM_ACTION_START;
2815 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2816 else if (strcmp(value, "shutdown") == 0) {
2817 action = ST_ADM_ACTION_SHUTDOWN;
2818 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2819 else {
2820 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2821 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2822 }
2823 }
2824 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2825 if (!(px && action)) {
2826 /*
2827 * Indicates that we'll need to reprocess the parameters
2828 * as soon as backend and action are known
2829 */
2830 if (!reprocess) {
2831 st_cur_param = cur_param;
2832 st_next_param = next_param;
2833 }
2834 reprocess = 1;
2835 }
2836 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2837 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2838 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2839 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2840 /* Not already in maintenance, we can change the server state */
2841 sv->state |= SRV_MAINTAIN;
2842 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2843 altered_servers++;
2844 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2845 }
2846 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2847 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2848 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2849 /* Already in maintenance, we can change the server state */
2850 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2851 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2852 altered_servers++;
2853 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2854 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2855 break;
2856 case ST_ADM_ACTION_STOP:
2857 case ST_ADM_ACTION_START:
2858 if (action == ST_ADM_ACTION_START)
2859 sv->uweight = sv->iweight;
2860 else
2861 sv->uweight = 0;
2862
2863 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2864 /* we must take care of not pushing the server to full throttle during slow starts */
2865 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2866 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2867 else
2868 sv->eweight = BE_WEIGHT_SCALE;
2869 sv->eweight *= sv->uweight;
2870 } else {
2871 sv->eweight = sv->uweight;
2872 }
2873
2874 /* static LB algorithms are a bit harder to update */
2875 if (px->lbprm.update_server_eweight)
2876 px->lbprm.update_server_eweight(sv);
2877 else if (sv->eweight) {
2878 if (px->lbprm.set_server_status_up)
2879 px->lbprm.set_server_status_up(sv);
2880 }
2881 else {
2882 if (px->lbprm.set_server_status_down)
2883 px->lbprm.set_server_status_down(sv);
2884 }
2885 altered_servers++;
2886 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2887 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2888 case ST_ADM_ACTION_SHUTDOWN:
2889 if (px->state != PR_STSTOPPED) {
2890 struct session *sess, *sess_bck;
2891
2892 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2893 if (sess->srv_conn == sv)
2894 session_shutdown(sess, SN_ERR_KILLED);
2895
2896 altered_servers++;
2897 total_servers++;
2898 }
2899 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2900 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2901 } else {
2902 /* the server name is unknown or ambiguous (duplicate names) */
2903 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2904 }
2905 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2906 if (reprocess && px && action) {
2907 /* Now, we know the backend and the action chosen by the user.
2908 * We can safely restart from the first server parameter
2909 * to reprocess them
2910 */
2911 cur_param = st_cur_param;
2912 next_param = st_next_param;
2913 reprocess = 0;
2914 goto reprocess_servers;
2915 }
2916
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2917 next_param = cur_param;
2918 }
2919 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2920
2921 if (total_servers == 0) {
2922 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2923 }
2924 else if (altered_servers == 0) {
2925 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2926 }
2927 else if (altered_servers == total_servers) {
2928 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2929 }
2930 else {
2931 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2932 }
2933 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2934 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2935}
2936
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2937/* This function checks whether we need to enable a POST analyser to parse a
2938 * stats request, and also registers the stats I/O handler. It returns zero
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]2939 * if it needs to come back again, otherwise non-zero if it finishes. In the
2940 * latter case, it also clears the request analysers.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2941 */
2942int http_handle_stats(struct session *s, struct channel *req)
2943{
2944 struct stats_admin_rule *stats_admin_rule;
2945 struct stream_interface *si = s->rep->prod;
2946 struct http_txn *txn = &s->txn;
2947 struct http_msg *msg = &txn->req;
2948 struct uri_auth *uri = s->be->uri_auth;
2949
2950 /* now check whether we have some admin rules for this request */
2951 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2952 int ret = 1;
2953
2954 if (stats_admin_rule->cond) {
2955 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2956 ret = acl_pass(ret);
2957 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2958 ret = !ret;
2959 }
2960
2961 if (ret) {
2962 /* no rule, or the rule matches */
2963 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
2964 break;
2965 }
2966 }
2967
2968 /* Was the status page requested with a POST ? */
2969 if (unlikely(txn->meth == HTTP_METH_POST)) {
2970 if (si->applet.ctx.stats.flags & STAT_ADMIN) {
2971 if (msg->msg_state < HTTP_MSG_100_SENT) {
2972 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2973 * send an HTTP/1.1 100 Continue intermediate response.
2974 */
2975 if (msg->flags & HTTP_MSGF_VER_11) {
2976 struct hdr_ctx ctx;
2977 ctx.idx = 0;
2978 /* Expect is allowed in 1.1, look for it */
2979 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2980 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2981 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2982 }
2983 }
2984 msg->msg_state = HTTP_MSG_100_SENT;
2985 s->logs.tv_request = now; /* update the request timer to reflect full request */
2986 }
2987 if (!http_process_req_stat_post(si, txn, req))
2988 return 0; /* we need more data */
2989 }
2990 else
2991 si->applet.ctx.stats.st_code = STAT_STATUS_DENY;
2992
2993 /* We don't want to land on the posted stats page because a refresh will
2994 * repost the data. We don't want this to happen on accident so we redirect
2995 * the browse to the stats page with a GET.
2996 */
2997 chunk_printf(&trash,
Yves Lafon4e8ec502013-03-11 11:06:05 -0400[diff] [blame]2998 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2999 "Cache-Control: no-cache\r\n"
3000 "Content-Type: text/plain\r\n"
3001 "Connection: close\r\n"
3002 "Location: %s;st=%s\r\n"
3003 "\r\n",
3004 uri->uri_prefix,
3005 ((si->applet.ctx.stats.st_code > STAT_STATUS_INIT) &&
3006 (si->applet.ctx.stats.st_code < STAT_STATUS_SIZE) &&
3007 stat_status_codes[si->applet.ctx.stats.st_code]) ?
3008 stat_status_codes[si->applet.ctx.stats.st_code] :
3009 stat_status_codes[STAT_STATUS_UNKN]);
3010
3011 s->txn.status = 303;
3012 s->logs.tv_request = now;
3013 stream_int_retnclose(req->prod, &trash);
3014 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
3015
3016 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3017 s->fe->fe_counters.intercepted_req++;
3018
3019 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3020 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3021 if (!(s->flags & SN_FINST_MASK))
3022 s->flags |= SN_FINST_R;
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3023 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3024 return 1;
3025 }
3026
3027 /* OK, let's go on now */
3028
3029 chunk_printf(&trash,
3030 "HTTP/1.0 200 OK\r\n"
3031 "Cache-Control: no-cache\r\n"
3032 "Connection: close\r\n"
3033 "Content-Type: %s\r\n",
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]3034 (si->applet.ctx.stats.flags & STAT_FMT_HTML) ? "text/html" : "text/plain");
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3035
3036 if (uri->refresh > 0 && !(si->applet.ctx.stats.flags & STAT_NO_REFRESH))
3037 chunk_appendf(&trash, "Refresh: %d\r\n",
3038 uri->refresh);
3039
3040 chunk_appendf(&trash, "\r\n");
3041
3042 s->txn.status = 200;
3043 s->logs.tv_request = now;
3044
3045 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3046 s->fe->fe_counters.intercepted_req++;
3047
3048 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3049 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3050 if (!(s->flags & SN_FINST_MASK))
3051 s->flags |= SN_FINST_R;
3052
3053 if (s->txn.meth == HTTP_METH_HEAD) {
3054 /* that's all we return in case of HEAD request, so let's immediately close. */
3055 stream_int_retnclose(req->prod, &trash);
3056 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3057 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3058 return 1;
3059 }
3060
3061 /* OK, push the response and hand over to the stats I/O handler */
3062 bi_putchk(s->rep, &trash);
3063
3064 s->task->nice = -32; /* small boost for HTTP statistics */
3065 stream_int_register_handler(s->rep->prod, &http_stats_applet);
3066 s->target = s->rep->prod->conn->target; // for logging only
3067 s->rep->prod->conn->xprt_ctx = s;
3068 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
3069 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3070 return 1;
3071}
3072
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3073/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3074 * transaction <txn>. Returns the first rule that prevents further processing
3075 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
3076 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
3077 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3078 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3079static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3080http_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]3081{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3082 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3083 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3084
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3085 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3086 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3087 continue;
3088
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3089 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3090 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3091 int ret;
3092
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3093 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]3094 ret = acl_pass(ret);
3095
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3096 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3097 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3098
3099 if (!ret) /* condition not matched */
3100 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3101 }
3102
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3103
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3104 switch (rule->action) {
3105 case HTTP_REQ_ACT_ALLOW:
3106 return NULL; /* "allow" rules are OK */
3107
3108 case HTTP_REQ_ACT_DENY:
3109 txn->flags |= TX_CLDENY;
3110 return rule;
3111
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3112 case HTTP_REQ_ACT_TARPIT:
3113 txn->flags |= TX_CLTARPIT;
3114 return rule;
3115
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3116 case HTTP_REQ_ACT_AUTH:
3117 return rule;
3118
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3119 case HTTP_REQ_ACT_REDIR:
3120 return rule;
3121
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3122 case HTTP_REQ_ACT_SET_HDR:
3123 ctx.idx = 0;
3124 /* remove all occurrences of the header */
3125 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3126 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3127 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3128 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3129 /* now fall through to header addition */
3130
3131 case HTTP_REQ_ACT_ADD_HDR:
3132 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3133 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3134 trash.len = rule->arg.hdr_add.name_len;
3135 trash.str[trash.len++] = ':';
3136 trash.str[trash.len++] = ' ';
3137 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3138 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3139 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3140 }
3141 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3142
3143 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3144 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3145}
3146
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3147
3148/* Perform an HTTP redirect based on the information in <rule>. The function
3149 * returns non-zero on success, or zero in case of a, irrecoverable error such
3150 * as too large a request to build a valid response.
3151 */
3152static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3153{
3154 struct http_msg *msg = &txn->req;
3155 const char *msg_fmt;
3156
3157 /* build redirect message */
3158 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3159 case 308:
3160 msg_fmt = HTTP_308;
3161 break;
3162 case 307:
3163 msg_fmt = HTTP_307;
3164 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3165 case 303:
3166 msg_fmt = HTTP_303;
3167 break;
3168 case 301:
3169 msg_fmt = HTTP_301;
3170 break;
3171 case 302:
3172 default:
3173 msg_fmt = HTTP_302;
3174 break;
3175 }
3176
3177 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3178 return 0;
3179
3180 switch(rule->type) {
3181 case REDIRECT_TYPE_SCHEME: {
3182 const char *path;
3183 const char *host;
3184 struct hdr_ctx ctx;
3185 int pathlen;
3186 int hostlen;
3187
3188 host = "";
3189 hostlen = 0;
3190 ctx.idx = 0;
3191 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3192 host = ctx.line + ctx.val;
3193 hostlen = ctx.vlen;
3194 }
3195
3196 path = http_get_path(txn);
3197 /* build message using path */
3198 if (path) {
3199 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3200 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3201 int qs = 0;
3202 while (qs < pathlen) {
3203 if (path[qs] == '?') {
3204 pathlen = qs;
3205 break;
3206 }
3207 qs++;
3208 }
3209 }
3210 } else {
3211 path = "/";
3212 pathlen = 1;
3213 }
3214
3215 /* check if we can add scheme + "://" + host + path */
3216 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3217 return 0;
3218
3219 /* add scheme */
3220 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3221 trash.len += rule->rdr_len;
3222
3223 /* add "://" */
3224 memcpy(trash.str + trash.len, "://", 3);
3225 trash.len += 3;
3226
3227 /* add host */
3228 memcpy(trash.str + trash.len, host, hostlen);
3229 trash.len += hostlen;
3230
3231 /* add path */
3232 memcpy(trash.str + trash.len, path, pathlen);
3233 trash.len += pathlen;
3234
3235 /* append a slash at the end of the location is needed and missing */
3236 if (trash.len && trash.str[trash.len - 1] != '/' &&
3237 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3238 if (trash.len > trash.size - 5)
3239 return 0;
3240 trash.str[trash.len] = '/';
3241 trash.len++;
3242 }
3243
3244 break;
3245 }
3246 case REDIRECT_TYPE_PREFIX: {
3247 const char *path;
3248 int pathlen;
3249
3250 path = http_get_path(txn);
3251 /* build message using path */
3252 if (path) {
3253 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3254 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3255 int qs = 0;
3256 while (qs < pathlen) {
3257 if (path[qs] == '?') {
3258 pathlen = qs;
3259 break;
3260 }
3261 qs++;
3262 }
3263 }
3264 } else {
3265 path = "/";
3266 pathlen = 1;
3267 }
3268
3269 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3270 return 0;
3271
3272 /* add prefix. Note that if prefix == "/", we don't want to
3273 * add anything, otherwise it makes it hard for the user to
3274 * configure a self-redirection.
3275 */
3276 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3277 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3278 trash.len += rule->rdr_len;
3279 }
3280
3281 /* add path */
3282 memcpy(trash.str + trash.len, path, pathlen);
3283 trash.len += pathlen;
3284
3285 /* append a slash at the end of the location is needed and missing */
3286 if (trash.len && trash.str[trash.len - 1] != '/' &&
3287 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3288 if (trash.len > trash.size - 5)
3289 return 0;
3290 trash.str[trash.len] = '/';
3291 trash.len++;
3292 }
3293
3294 break;
3295 }
3296 case REDIRECT_TYPE_LOCATION:
3297 default:
3298 if (trash.len + rule->rdr_len > trash.size - 4)
3299 return 0;
3300
3301 /* add location */
3302 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3303 trash.len += rule->rdr_len;
3304 break;
3305 }
3306
3307 if (rule->cookie_len) {
3308 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3309 trash.len += 14;
3310 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3311 trash.len += rule->cookie_len;
3312 memcpy(trash.str + trash.len, "\r\n", 2);
3313 trash.len += 2;
3314 }
3315
3316 /* add end of headers and the keep-alive/close status.
3317 * We may choose to set keep-alive if the Location begins
3318 * with a slash, because the client will come back to the
3319 * same server.
3320 */
3321 txn->status = rule->code;
3322 /* let's log the request time */
3323 s->logs.tv_request = now;
3324
3325 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
3326 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3327 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3328 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3329 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3330 /* keep-alive possible */
3331 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3332 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3333 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3334 trash.len += 30;
3335 } else {
3336 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3337 trash.len += 24;
3338 }
3339 }
3340 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3341 trash.len += 4;
3342 bo_inject(txn->rsp.chn, trash.str, trash.len);
3343 /* "eat" the request */
3344 bi_fast_delete(txn->req.chn->buf, msg->sov);
3345 msg->sov = 0;
3346 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3347 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3348 txn->req.msg_state = HTTP_MSG_CLOSED;
3349 txn->rsp.msg_state = HTTP_MSG_DONE;
3350 } else {
3351 /* keep-alive not possible */
3352 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3353 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3354 trash.len += 29;
3355 } else {
3356 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3357 trash.len += 23;
3358 }
3359 stream_int_retnclose(txn->req.chn->prod, &trash);
3360 txn->req.chn->analysers = 0;
3361 }
3362
3363 if (!(s->flags & SN_ERR_MASK))
3364 s->flags |= SN_ERR_PRXCOND;
3365 if (!(s->flags & SN_FINST_MASK))
3366 s->flags |= SN_FINST_R;
3367
3368 return 1;
3369}
3370
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3371/* This stream analyser runs all HTTP request processing which is common to
3372 * frontends and backends, which means blocking ACLs, filters, connection-close,
3373 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3374 * 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]3375 * either needs more data or wants to immediately abort the request (eg: deny,
3376 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3377 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3378int 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]3379{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3380 struct http_txn *txn = &s->txn;
3381 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3382 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3383 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3384 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3385 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]3386 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3387
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3388 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3389 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3390 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3391 return 0;
3392 }
3393
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3394 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3395 req->analyse_exp = TICK_ETERNITY;
3396
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3397 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]3398 now_ms, __FUNCTION__,
3399 s,
3400 req,
3401 req->rex, req->wex,
3402 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3403 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3404 req->analysers);
3405
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3406 /* first check whether we have some ACLs set to block this request */
3407 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3408 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]3409
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3410 ret = acl_pass(ret);
3411 if (cond->pol == ACL_COND_UNLESS)
3412 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3413
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3414 if (ret) {
3415 txn->status = 403;
3416 /* let's log the request time */
3417 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3418 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3419 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3420 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3421 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3422 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3423
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3424 /* just in case we have some per-backend tracking */
3425 session_inc_be_http_req_ctr(s);
3426
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3427 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3428 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]3429
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3430 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3431 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3432 do_stats = stats_check_uri(s->rep->prod, txn, px);
3433 if (do_stats)
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3434 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]3435 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3436 else
3437 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3438
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3439 /* return a 403 if either rule has blocked */
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3440 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
3441 if (txn->flags & TX_CLDENY) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3442 txn->status = 403;
3443 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3444 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3445 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3446 s->fe->fe_counters.denied_req++;
3447 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3448 s->be->be_counters.denied_req++;
3449 if (s->listener->counters)
3450 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3451 goto return_prx_cond;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3452 }
3453 /* When a connection is tarpitted, we use the tarpit timeout,
3454 * which may be the same as the connect timeout if unspecified.
3455 * If unset, then set it to zero because we really want it to
3456 * eventually expire. We build the tarpit as an analyser.
3457 */
3458 if (txn->flags & TX_CLTARPIT) {
3459 channel_erase(s->req);
3460 /* wipe the request out so that we can drop the connection early
3461 * if the client closes first.
3462 */
3463 channel_dont_connect(req);
3464 req->analysers = 0; /* remove switching rules etc... */
3465 req->analysers |= AN_REQ_HTTP_TARPIT;
3466 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3467 if (!req->analyse_exp)
3468 req->analyse_exp = tick_add(now_ms, 0);
3469 session_inc_http_err_ctr(s);
3470 s->fe->fe_counters.denied_req++;
3471 if (s->fe != s->be)
3472 s->be->be_counters.denied_req++;
3473 if (s->listener->counters)
3474 s->listener->counters->denied_req++;
3475 return 1;
3476 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3477 }
3478
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3479 /* try headers filters */
3480 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3481 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3482 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3483
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3484 /* has the request been denied ? */
3485 if (txn->flags & TX_CLDENY) {
3486 /* no need to go further */
3487 txn->status = 403;
3488 /* let's log the request time */
3489 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3490 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3491 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3492 goto return_prx_cond;
3493 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3494
3495 /* When a connection is tarpitted, we use the tarpit timeout,
3496 * which may be the same as the connect timeout if unspecified.
3497 * If unset, then set it to zero because we really want it to
3498 * eventually expire. We build the tarpit as an analyser.
3499 */
3500 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3501 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3502 /* wipe the request out so that we can drop the connection early
3503 * if the client closes first.
3504 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3505 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3506 req->analysers = 0; /* remove switching rules etc... */
3507 req->analysers |= AN_REQ_HTTP_TARPIT;
3508 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3509 if (!req->analyse_exp)
3510 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3511 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3512 return 1;
3513 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3514 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3515
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3516 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3517 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3518 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3519 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3520 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3521 * avoid to redo the same work if FE and BE have the same settings (common).
3522 * The method consists in checking if options changed between the two calls
3523 * (implying that either one is non-null, or one of them is non-null and we
3524 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3525 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3526
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3527 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3528 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3529 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3530 (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]3531 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3532
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3533 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3534 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3535 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3536 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3537 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3538 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3539 tmp = TX_CON_WANT_CLO;
3540
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3541 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3542 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3543
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3544 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3545 /* parse the Connection header and possibly clean it */
3546 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3547 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3548 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3549 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3550 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3551 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3552 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3553 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3554 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3555
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3556 /* check if client or config asks for explicit close in KAL/SCL */
3557 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3558 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3559 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3560 (!(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]3561 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3562 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3563 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3564 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3565 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3566
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3567 /* we can be blocked here because the request needs to be authenticated,
3568 * either to pass or to access stats.
3569 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3570 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3571 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3572
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3573 if (!realm)
3574 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3575
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3576 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]3577 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3578 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3579 /* on 401 we still count one error, because normal browsing
3580 * won't significantly increase the counter but brute force
3581 * attempts will.
3582 */
3583 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3584 goto return_prx_cond;
3585 }
3586
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3587 /* add request headers from the rule sets in the same order */
3588 list_for_each_entry(wl, &px->req_add, list) {
3589 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3590 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]3591 ret = acl_pass(ret);
3592 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3593 ret = !ret;
3594 if (!ret)
3595 continue;
3596 }
3597
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3598 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3599 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3600 }
3601
3602 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3603 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3604 goto return_bad_req;
3605 req->analyse_exp = TICK_ETERNITY;
3606 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3607 }
3608
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3609 if (unlikely(do_stats)) {
3610 /* process the stats request now */
3611 if (!http_handle_stats(s, req)) {
3612 /* we need more data, let's come back here later */
3613 req->analysers |= an_bit;
3614 channel_dont_connect(req);
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3615 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3616 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3617 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3618
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3619 /* check whether we have some ACLs set to redirect this request */
3620 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3621 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3622 int ret;
3623
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3624 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]3625 ret = acl_pass(ret);
3626 if (rule->cond->pol == ACL_COND_UNLESS)
3627 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3628 if (!ret)
3629 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3630 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3631 if (!http_apply_redirect_rule(rule, s, txn))
3632 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3633
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3634 req->analyse_exp = TICK_ETERNITY;
3635 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3636 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3637
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3638 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3639 * If this happens, then the data will not come immediately, so we must
3640 * send all what we have without waiting. Note that due to the small gain
3641 * 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]3642 * 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]3643 * itself once used.
3644 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3645 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3646
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3647 /* that's OK for us now, let's move on to next analysers */
3648 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3649
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3650 return_bad_req:
3651 /* We centralize bad requests processing here */
3652 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3653 /* we detected a parsing error. We want to archive this request
3654 * in the dedicated proxy area for later troubleshooting.
3655 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3656 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]3657 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3658
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3659 txn->req.msg_state = HTTP_MSG_ERROR;
3660 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3661 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3662
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3663 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3664 if (s->listener->counters)
3665 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3666
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3667 return_prx_cond:
3668 if (!(s->flags & SN_ERR_MASK))
3669 s->flags |= SN_ERR_PRXCOND;
3670 if (!(s->flags & SN_FINST_MASK))
3671 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3672
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3673 req->analysers = 0;
3674 req->analyse_exp = TICK_ETERNITY;
3675 return 0;
3676}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3677
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3678/* This function performs all the processing enabled for the current request.
3679 * It returns 1 if the processing can continue on next analysers, or zero if it
3680 * needs more data, encounters an error, or wants to immediately abort the
3681 * request. It relies on buffers flags, and updates s->req->analysers.
3682 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3683int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3684{
3685 struct http_txn *txn = &s->txn;
3686 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3687
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3688 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3689 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3690 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3691 return 0;
3692 }
3693
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3694 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]3695 now_ms, __FUNCTION__,
3696 s,
3697 req,
3698 req->rex, req->wex,
3699 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3700 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3701 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3702
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3703 if (s->fe->comp || s->be->comp)
3704 select_compression_request_header(s, req->buf);
3705
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3706 /*
3707 * Right now, we know that we have processed the entire headers
3708 * and that unwanted requests have been filtered out. We can do
3709 * whatever we want with the remaining request. Also, now we
3710 * may have separate values for ->fe, ->be.
3711 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3712
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3713 /*
3714 * If HTTP PROXY is set we simply get remote server address
3715 * parsing incoming request.
3716 */
3717 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3718 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]3719 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3720
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3721 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3722 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3723 * Note that doing so might move headers in the request, but
3724 * the fields will stay coherent and the URI will not move.
3725 * This should only be performed in the backend.
3726 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3727 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3728 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3729 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3730
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3731 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3732 * 8: the appsession cookie was looked up very early in 1.2,
3733 * so let's do the same now.
3734 */
3735
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3736 /* It needs to look into the URI unless persistence must be ignored */
3737 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3738 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]3739 }
3740
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3741 /* add unique-id if "header-unique-id" is specified */
3742
3743 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3744 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3745
3746 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3747 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3748 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3749 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3750 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]3751 goto return_bad_req;
3752 }
3753
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3754 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3755 * 9: add X-Forwarded-For if either the frontend or the backend
3756 * asks for it.
3757 */
3758 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3759 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3760 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3761 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3762 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]3763 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3764 /* The header is set to be added only if none is present
3765 * and we found it, so don't do anything.
3766 */
3767 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3768 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3769 /* Add an X-Forwarded-For header unless the source IP is
3770 * in the 'except' network range.
3771 */
3772 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3773 (((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]3774 != s->fe->except_net.s_addr) &&
3775 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3776 (((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]3777 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3778 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3779 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3780 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3781
3782 /* Note: we rely on the backend to get the header name to be used for
3783 * x-forwarded-for, because the header is really meant for the backends.
3784 * However, if the backend did not specify any option, we have to rely
3785 * on the frontend's header name.
3786 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3787 if (s->be->fwdfor_hdr_len) {
3788 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3789 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3790 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3791 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3792 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3793 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3794 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]3795
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3796 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]3797 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3798 }
3799 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3800 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3801 /* FIXME: for the sake of completeness, we should also support
3802 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3803 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3804 int len;
3805 char pn[INET6_ADDRSTRLEN];
3806 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3807 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3808 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3809
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3810 /* Note: we rely on the backend to get the header name to be used for
3811 * x-forwarded-for, because the header is really meant for the backends.
3812 * However, if the backend did not specify any option, we have to rely
3813 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3814 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3815 if (s->be->fwdfor_hdr_len) {
3816 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3817 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3818 } else {
3819 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3820 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3821 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3822 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3823
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3824 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]3825 goto return_bad_req;
3826 }
3827 }
3828
3829 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3830 * 10: add X-Original-To if either the frontend or the backend
3831 * asks for it.
3832 */
3833 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3834
3835 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3836 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3837 /* Add an X-Original-To header unless the destination IP is
3838 * in the 'except' network range.
3839 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3840 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3841
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3842 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3843 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3844 (((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]3845 != s->fe->except_to.s_addr) &&
3846 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3847 (((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]3848 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3849 int len;
3850 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3851 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3852
3853 /* Note: we rely on the backend to get the header name to be used for
3854 * x-original-to, because the header is really meant for the backends.
3855 * However, if the backend did not specify any option, we have to rely
3856 * on the frontend's header name.
3857 */
3858 if (s->be->orgto_hdr_len) {
3859 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3860 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3861 } else {
3862 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3863 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3864 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3865 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]3866
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3867 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]3868 goto return_bad_req;
3869 }
3870 }
3871 }
3872
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3873 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3874 * If an "Upgrade" token is found, the header is left untouched in order not to have
3875 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3876 * "Upgrade" is present in the Connection header.
3877 */
3878 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3879 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3880 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3881 unsigned int want_flags = 0;
3882
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3883 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3884 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3885 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3886 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3887 want_flags |= TX_CON_CLO_SET;
3888 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3889 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3890 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3891 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3892 want_flags |= TX_CON_KAL_SET;
3893 }
3894
3895 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3896 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3897 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3898
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3899
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3900 /* If we have no server assigned yet and we're balancing on url_param
3901 * with a POST request, we may be interested in checking the body for
3902 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3903 */
3904 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3905 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3906 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3907 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3908 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3909 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3910 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3911
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3912 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3913 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3914#ifdef TCP_QUICKACK
3915 /* We expect some data from the client. Unless we know for sure
3916 * we already have a full request, we have to re-enable quick-ack
3917 * in case we previously disabled it, otherwise we might cause
3918 * the client to delay further data.
3919 */
3920 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3921 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3922 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3923 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]3924#endif
3925 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3926
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3927 /*************************************************************
3928 * OK, that's finished for the headers. We have done what we *
3929 * could. Let's switch to the DATA state. *
3930 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3931 req->analyse_exp = TICK_ETERNITY;
3932 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3933
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3934 /* if the server closes the connection, we want to immediately react
3935 * and close the socket to save packets and syscalls.
3936 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]3937 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
3938 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3939
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3940 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3941 /* OK let's go on with the BODY now */
3942 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3943
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3944 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3945 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3946 /* we detected a parsing error. We want to archive this request
3947 * in the dedicated proxy area for later troubleshooting.
3948 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3949 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]3950 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3951
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3952 txn->req.msg_state = HTTP_MSG_ERROR;
3953 txn->status = 400;
3954 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3955 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3956
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3957 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3958 if (s->listener->counters)
3959 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3960
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3961 if (!(s->flags & SN_ERR_MASK))
3962 s->flags |= SN_ERR_PRXCOND;
3963 if (!(s->flags & SN_FINST_MASK))
3964 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3965 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3966}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3967
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3968/* This function is an analyser which processes the HTTP tarpit. It always
3969 * returns zero, at the beginning because it prevents any other processing
3970 * from occurring, and at the end because it terminates the request.
3971 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3972int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3973{
3974 struct http_txn *txn = &s->txn;
3975
3976 /* This connection is being tarpitted. The CLIENT side has
3977 * already set the connect expiration date to the right
3978 * timeout. We just have to check that the client is still
3979 * there and that the timeout has not expired.
3980 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3981 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3982 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3983 !tick_is_expired(req->analyse_exp, now_ms))
3984 return 0;
3985
3986 /* We will set the queue timer to the time spent, just for
3987 * logging purposes. We fake a 500 server error, so that the
3988 * attacker will not suspect his connection has been tarpitted.
3989 * It will not cause trouble to the logs because we can exclude
3990 * the tarpitted connections by filtering on the 'PT' status flags.
3991 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3992 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3993
3994 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3995 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3996 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3997
3998 req->analysers = 0;
3999 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4000
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4001 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4002 if (s->listener->counters)
4003 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4004
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4005 if (!(s->flags & SN_ERR_MASK))
4006 s->flags |= SN_ERR_PRXCOND;
4007 if (!(s->flags & SN_FINST_MASK))
4008 s->flags |= SN_FINST_T;
4009 return 0;
4010}
4011
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4012/* This function is an analyser which processes the HTTP request body. It looks
4013 * for parameters to be used for the load balancing algorithm (url_param). It
4014 * must only be called after the standard HTTP request processing has occurred,
4015 * because it expects the request to be parsed. It returns zero if it needs to
4016 * read more data, or 1 once it has completed its analysis.
4017 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4018int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4019{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4020 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4021 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4022 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4023
4024 /* We have to parse the HTTP request body to find any required data.
4025 * "balance url_param check_post" should have been the only way to get
4026 * into this. We were brought here after HTTP header analysis, so all
4027 * related structures are ready.
4028 */
4029
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4030 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4031 goto missing_data;
4032
4033 if (msg->msg_state < HTTP_MSG_100_SENT) {
4034 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4035 * send an HTTP/1.1 100 Continue intermediate response.
4036 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4037 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4038 struct hdr_ctx ctx;
4039 ctx.idx = 0;
4040 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4041 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4042 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4043 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4044 }
4045 }
4046 msg->msg_state = HTTP_MSG_100_SENT;
4047 }
4048
4049 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4050 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4051 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4052 * is still null. We must save the body in msg->next because it
4053 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4054 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4055 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4056
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4057 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4058 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4059 else
4060 msg->msg_state = HTTP_MSG_DATA;
4061 }
4062
4063 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4064 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4065 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4066 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4067 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4068 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4069
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4070 if (!ret)
4071 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4072 else if (ret < 0) {
4073 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4074 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4075 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4076 }
4077
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4078 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4079 * We have the first data byte is in msg->sov. We're waiting for at
4080 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4081 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4082
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4083 if (msg->body_len < limit)
4084 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4085
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4086 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4087 goto http_end;
4088
4089 missing_data:
4090 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4091 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4092 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4093 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4094 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4095
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4096 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4097 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4098 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4099
4100 if (!(s->flags & SN_ERR_MASK))
4101 s->flags |= SN_ERR_CLITO;
4102 if (!(s->flags & SN_FINST_MASK))
4103 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4104 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4105 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4106
4107 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4108 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]4109 /* Not enough data. We'll re-use the http-request
4110 * timeout here. Ideally, we should set the timeout
4111 * relative to the accept() date. We just set the
4112 * request timeout once at the beginning of the
4113 * request.
4114 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4115 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4116 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4117 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4118 return 0;
4119 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4120
4121 http_end:
4122 /* The situation will not evolve, so let's give up on the analysis. */
4123 s->logs.tv_request = now; /* update the request timer to reflect full request */
4124 req->analysers &= ~an_bit;
4125 req->analyse_exp = TICK_ETERNITY;
4126 return 1;
4127
4128 return_bad_req: /* let's centralize all bad requests */
4129 txn->req.msg_state = HTTP_MSG_ERROR;
4130 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4131 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4132
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4133 if (!(s->flags & SN_ERR_MASK))
4134 s->flags |= SN_ERR_PRXCOND;
4135 if (!(s->flags & SN_FINST_MASK))
4136 s->flags |= SN_FINST_R;
4137
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4138 return_err_msg:
4139 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4140 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4141 if (s->listener->counters)
4142 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4143 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4144}
4145
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4146/* send a server's name with an outgoing request over an established connection.
4147 * Note: this function is designed to be called once the request has been scheduled
4148 * for being forwarded. This is the reason why it rewinds the buffer before
4149 * proceeding.
4150 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4151int 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]4152
4153 struct hdr_ctx ctx;
4154
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4155 char *hdr_name = be->server_id_hdr_name;
4156 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4157 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4158 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4159 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4160
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4161 ctx.idx = 0;
4162
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4163 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4164 if (old_o) {
4165 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4166 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4167 }
4168
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4169 old_i = chn->buf->i;
4170 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]4171 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4172 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4173 }
4174
4175 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4176 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4177 memcpy(hdr_val, hdr_name, hdr_name_len);
4178 hdr_val += hdr_name_len;
4179 *hdr_val++ = ':';
4180 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4181 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4182 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]4183
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4184 if (old_o) {
4185 /* If this was a forwarded request, we must readjust the amount of
4186 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4187 * variations. Note that if the request was already scheduled for
4188 * forwarding, it had its req->sol pointing to the body, which
4189 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4190 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4191 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4192 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4193 }
4194
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4195 return 0;
4196}
4197
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4198/* Terminate current transaction and prepare a new one. This is very tricky
4199 * right now but it works.
4200 */
4201void http_end_txn_clean_session(struct session *s)
4202{
4203 /* FIXME: We need a more portable way of releasing a backend's and a
4204 * server's connections. We need a safer way to reinitialize buffer
4205 * flags. We also need a more accurate method for computing per-request
4206 * data.
4207 */
4208 http_silent_debug(__LINE__, s);
4209
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4210 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4211 si_shutr(s->req->cons);
4212 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4213
4214 http_silent_debug(__LINE__, s);
4215
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4216 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4217 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4218 if (unlikely(s->srv_conn))
4219 sess_change_server(s, NULL);
4220 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4221
4222 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4223 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4224 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4225
4226 if (s->txn.status) {
4227 int n;
4228
4229 n = s->txn.status / 100;
4230 if (n < 1 || n > 5)
4231 n = 0;
4232
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4233 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4234 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4235 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4236 s->fe->fe_counters.p.http.comp_rsp++;
4237 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4238 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4239 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4240 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4241 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4242 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4243 s->be->be_counters.p.http.comp_rsp++;
4244 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4245 }
4246
4247 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4248 s->logs.bytes_in -= s->req->buf->i;
4249 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4250
4251 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4252 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4253 !(s->flags & SN_MONITOR) &&
4254 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4255 s->do_log(s);
4256 }
4257
4258 s->logs.accept_date = date; /* user-visible date for logging */
4259 s->logs.tv_accept = now; /* corrected date for internal use */
4260 tv_zero(&s->logs.tv_request);
4261 s->logs.t_queue = -1;
4262 s->logs.t_connect = -1;
4263 s->logs.t_data = -1;
4264 s->logs.t_close = 0;
4265 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4266 s->logs.srv_queue_size = 0; /* we will get this number soon */
4267
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4268 s->logs.bytes_in = s->req->total = s->req->buf->i;
4269 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4270
4271 if (s->pend_pos)
4272 pendconn_free(s->pend_pos);
4273
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4274 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4275 if (s->flags & SN_CURR_SESS) {
4276 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4277 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4278 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4279 if (may_dequeue_tasks(objt_server(s->target), s->be))
4280 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4281 }
4282
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4283 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4284
4285 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4286 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4287 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4288 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4289 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4290 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4291 s->req->cons->err_loc = NULL;
4292 s->req->cons->exp = TICK_ETERNITY;
4293 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4294 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4295 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]4296 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]4297 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4298
4299 if (s->flags & SN_COMP_READY)
4300 s->comp_algo->end(&s->comp_ctx);
4301 s->comp_algo = NULL;
4302 s->flags &= ~SN_COMP_READY;
4303
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4304 s->txn.meth = 0;
4305 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4306 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4307 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4308 s->req->cons->flags |= SI_FL_INDEP_STR;
4309
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4310 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4311 s->req->flags |= CF_NEVER_WAIT;
4312 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4313 }
4314
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4315 /* if the request buffer is not empty, it means we're
4316 * about to process another request, so send pending
4317 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4318 * Just don't do this if the buffer is close to be full,
4319 * because the request will wait for it to flush a little
4320 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4321 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4322 if (s->req->buf->i) {
4323 if (s->rep->buf->o &&
4324 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4325 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]4326 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4327 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4328
4329 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4330 channel_auto_read(s->req);
4331 channel_auto_close(s->req);
4332 channel_auto_read(s->rep);
4333 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4334
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4335 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4336 s->rep->analysers = 0;
4337
4338 http_silent_debug(__LINE__, s);
4339}
4340
4341
4342/* This function updates the request state machine according to the response
4343 * state machine and buffer flags. It returns 1 if it changes anything (flag
4344 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4345 * it is only used to find when a request/response couple is complete. Both
4346 * this function and its equivalent should loop until both return zero. It
4347 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4348 */
4349int http_sync_req_state(struct session *s)
4350{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4351 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4352 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4353 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4354 unsigned int old_state = txn->req.msg_state;
4355
4356 http_silent_debug(__LINE__, s);
4357 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4358 return 0;
4359
4360 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4361 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4362 * We can shut the read side unless we want to abort_on_close,
4363 * or we have a POST request. The issue with POST requests is
4364 * that some browsers still send a CRLF after the request, and
4365 * this CRLF must be read so that it does not remain in the kernel
4366 * buffers, otherwise a close could cause an RST on some systems
4367 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4368 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4369 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4370 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4371
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4372 /* if the server closes the connection, we want to immediately react
4373 * and close the socket to save packets and syscalls.
4374 */
4375 chn->cons->flags |= SI_FL_NOHALF;
4376
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4377 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4378 goto wait_other_side;
4379
4380 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4381 /* The server has not finished to respond, so we
4382 * don't want to move in order not to upset it.
4383 */
4384 goto wait_other_side;
4385 }
4386
4387 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4388 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4389 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4390 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4391 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4392 goto wait_other_side;
4393 }
4394
4395 /* When we get here, it means that both the request and the
4396 * response have finished receiving. Depending on the connection
4397 * mode, we'll have to wait for the last bytes to leave in either
4398 * direction, and sometimes for a close to be effective.
4399 */
4400
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4401 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4402 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4403 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4404 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4405 }
4406 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4407 /* Option forceclose is set, or either side wants to close,
4408 * let's enforce it now that we're not expecting any new
4409 * data to come. The caller knows the session is complete
4410 * once both states are CLOSED.
4411 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4412 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4413 channel_shutr_now(chn);
4414 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4415 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4416 }
4417 else {
4418 /* The last possible modes are keep-alive and tunnel. Since tunnel
4419 * mode does not set the body analyser, we can't reach this place
4420 * in tunnel mode, so we're left with keep-alive only.
4421 * This mode is currently not implemented, we switch to tunnel mode.
4422 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4423 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4424 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4425 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4426 }
4427
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4428 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4429 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4430 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4431
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4432 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4433 txn->req.msg_state = HTTP_MSG_CLOSING;
4434 goto http_msg_closing;
4435 }
4436 else {
4437 txn->req.msg_state = HTTP_MSG_CLOSED;
4438 goto http_msg_closed;
4439 }
4440 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4441 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4442 }
4443
4444 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4445 http_msg_closing:
4446 /* nothing else to forward, just waiting for the output buffer
4447 * to be empty and for the shutw_now to take effect.
4448 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4449 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4450 txn->req.msg_state = HTTP_MSG_CLOSED;
4451 goto http_msg_closed;
4452 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4453 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4454 txn->req.msg_state = HTTP_MSG_ERROR;
4455 goto wait_other_side;
4456 }
4457 }
4458
4459 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4460 http_msg_closed:
4461 goto wait_other_side;
4462 }
4463
4464 wait_other_side:
4465 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4466 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4467}
4468
4469
4470/* This function updates the response state machine according to the request
4471 * state machine and buffer flags. It returns 1 if it changes anything (flag
4472 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4473 * it is only used to find when a request/response couple is complete. Both
4474 * this function and its equivalent should loop until both return zero. It
4475 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4476 */
4477int http_sync_res_state(struct session *s)
4478{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4479 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4480 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4481 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4482 unsigned int old_state = txn->rsp.msg_state;
4483
4484 http_silent_debug(__LINE__, s);
4485 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4486 return 0;
4487
4488 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4489 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4490 * still monitor the server connection for a possible close
4491 * while the request is being uploaded, so we don't disable
4492 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4493 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4494 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4495
4496 if (txn->req.msg_state == HTTP_MSG_ERROR)
4497 goto wait_other_side;
4498
4499 if (txn->req.msg_state < HTTP_MSG_DONE) {
4500 /* The client seems to still be sending data, probably
4501 * because we got an error response during an upload.
4502 * We have the choice of either breaking the connection
4503 * or letting it pass through. Let's do the later.
4504 */
4505 goto wait_other_side;
4506 }
4507
4508 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4509 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4510 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4511 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4512 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4513 goto wait_other_side;
4514 }
4515
4516 /* When we get here, it means that both the request and the
4517 * response have finished receiving. Depending on the connection
4518 * mode, we'll have to wait for the last bytes to leave in either
4519 * direction, and sometimes for a close to be effective.
4520 */
4521
4522 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4523 /* Server-close mode : shut read and wait for the request
4524 * side to close its output buffer. The caller will detect
4525 * when we're in DONE and the other is in CLOSED and will
4526 * catch that for the final cleanup.
4527 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4528 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4529 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4530 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4531 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4532 /* Option forceclose is set, or either side wants to close,
4533 * let's enforce it now that we're not expecting any new
4534 * data to come. The caller knows the session is complete
4535 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4536 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4537 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4538 channel_shutr_now(chn);
4539 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4540 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4541 }
4542 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4543 /* The last possible modes are keep-alive and tunnel. Since tunnel
4544 * mode does not set the body analyser, we can't reach this place
4545 * in tunnel mode, so we're left with keep-alive only.
4546 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4547 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4548 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4549 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4550 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4551 }
4552
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4553 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4554 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4555 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4556 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4557 goto http_msg_closing;
4558 }
4559 else {
4560 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4561 goto http_msg_closed;
4562 }
4563 }
4564 goto wait_other_side;
4565 }
4566
4567 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4568 http_msg_closing:
4569 /* nothing else to forward, just waiting for the output buffer
4570 * to be empty and for the shutw_now to take effect.
4571 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4572 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4573 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4574 goto http_msg_closed;
4575 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4576 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4577 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4578 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4579 if (objt_server(s->target))
4580 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4581 goto wait_other_side;
4582 }
4583 }
4584
4585 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4586 http_msg_closed:
4587 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4588 bi_erase(chn);
4589 channel_auto_close(chn);
4590 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4591 goto wait_other_side;
4592 }
4593
4594 wait_other_side:
4595 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4596 /* We force the response to leave immediately if we're waiting for the
4597 * other side, since there is no pending shutdown to push it out.
4598 */
4599 if (!channel_is_empty(chn))
4600 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4601 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4602}
4603
4604
4605/* Resync the request and response state machines. Return 1 if either state
4606 * changes.
4607 */
4608int http_resync_states(struct session *s)
4609{
4610 struct http_txn *txn = &s->txn;
4611 int old_req_state = txn->req.msg_state;
4612 int old_res_state = txn->rsp.msg_state;
4613
4614 http_silent_debug(__LINE__, s);
4615 http_sync_req_state(s);
4616 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4617 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4618 if (!http_sync_res_state(s))
4619 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4620 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4621 if (!http_sync_req_state(s))
4622 break;
4623 }
4624 http_silent_debug(__LINE__, s);
4625 /* OK, both state machines agree on a compatible state.
4626 * There are a few cases we're interested in :
4627 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4628 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4629 * directions, so let's simply disable both analysers.
4630 * - HTTP_MSG_CLOSED on the response only means we must abort the
4631 * request.
4632 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4633 * with server-close mode means we've completed one request and we
4634 * must re-initialize the server connection.
4635 */
4636
4637 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4638 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4639 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4640 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4641 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4642 channel_auto_close(s->req);
4643 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4644 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4645 channel_auto_close(s->rep);
4646 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4647 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4648 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4649 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4650 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4651 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4652 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4653 channel_auto_close(s->rep);
4654 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4655 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4656 channel_abort(s->req);
4657 channel_auto_close(s->req);
4658 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4659 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4660 }
4661 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4662 txn->rsp.msg_state == HTTP_MSG_DONE &&
4663 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4664 /* server-close: terminate this server connection and
4665 * reinitialize a fresh-new transaction.
4666 */
4667 http_end_txn_clean_session(s);
4668 }
4669
4670 http_silent_debug(__LINE__, s);
4671 return txn->req.msg_state != old_req_state ||
4672 txn->rsp.msg_state != old_res_state;
4673}
4674
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4675/* This function is an analyser which forwards request body (including chunk
4676 * sizes if any). It is called as soon as we must forward, even if we forward
4677 * zero byte. The only situation where it must not be called is when we're in
4678 * tunnel mode and we want to forward till the close. It's used both to forward
4679 * remaining data and to resync after end of body. It expects the msg_state to
4680 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4681 * 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]4682 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4683 * bytes of pending data + the headers if not already done (between sol and sov).
4684 * 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]4685 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4686int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4687{
4688 struct http_txn *txn = &s->txn;
4689 struct http_msg *msg = &s->txn.req;
4690
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4691 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4692 return 0;
4693
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4694 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]4695 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4696 /* Output closed while we were sending data. We must abort and
4697 * wake the other side up.
4698 */
4699 msg->msg_state = HTTP_MSG_ERROR;
4700 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4701 return 1;
4702 }
4703
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4704 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4705 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4706
4707 /* Note that we don't have to send 100-continue back because we don't
4708 * need the data to complete our job, and it's up to the server to
4709 * decide whether to return 100, 417 or anything else in return of
4710 * an "Expect: 100-continue" header.
4711 */
4712
4713 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4714 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4715 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4716 * is still null. We must save the body in msg->next because it
4717 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4718 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4719 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4720
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4721 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4722 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4723 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4724 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4725 }
4726
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4727 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4728 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4729
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4730 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4731 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4732 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4733 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4734 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4735 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4736 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4737 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4738 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4739
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4740 if (msg->msg_state == HTTP_MSG_DATA) {
4741 /* must still forward */
4742 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4743 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4744
4745 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4746 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4747 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4748 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4749 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4750 }
4751 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4752 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4753 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4754 * TRAILERS state.
4755 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4756 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4757
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4758 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4759 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4760 else if (ret < 0) {
4761 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4762 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4763 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]4764 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4765 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4766 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4767 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4768 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4769 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4770 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4771
4772 if (ret == 0)
4773 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4774 else if (ret < 0) {
4775 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4776 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4777 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]4778 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4779 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4780 /* we're in MSG_CHUNK_SIZE now */
4781 }
4782 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4783 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4784
4785 if (ret == 0)
4786 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4787 else if (ret < 0) {
4788 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4789 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4790 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]4791 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4792 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4793 /* we're in HTTP_MSG_DONE now */
4794 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4795 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4796 int old_state = msg->msg_state;
4797
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4798 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4799 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4800 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4801 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4802 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4803 if (http_resync_states(s)) {
4804 /* some state changes occurred, maybe the analyser
4805 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4806 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4807 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4808 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4809 /* request errors are most likely due to
4810 * the server aborting the transfer.
4811 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4812 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4813 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4814 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4815 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4816 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4817 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4818 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4819 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4820
4821 /* If "option abortonclose" is set on the backend, we
4822 * want to monitor the client's connection and forward
4823 * any shutdown notification to the server, which will
4824 * decide whether to close or to go on processing the
4825 * request.
4826 */
4827 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4828 channel_auto_read(req);
4829 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4830 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4831 else if (s->txn.meth == HTTP_METH_POST) {
4832 /* POST requests may require to read extra CRLF
4833 * sent by broken browsers and which could cause
4834 * an RST to be sent upon close on some systems
4835 * (eg: Linux).
4836 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4837 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4838 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4839
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4840 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4841 }
4842 }
4843
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4844 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4845 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4846 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4847 if (!(s->flags & SN_ERR_MASK))
4848 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4849 if (!(s->flags & SN_FINST_MASK)) {
4850 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4851 s->flags |= SN_FINST_H;
4852 else
4853 s->flags |= SN_FINST_D;
4854 }
4855
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4856 s->fe->fe_counters.cli_aborts++;
4857 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4858 if (objt_server(s->target))
4859 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4860
4861 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4862 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4863
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4864 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4865 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4866 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4867
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4868 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4869 * 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]4870 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4871 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4872 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4873
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4874 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4875 * 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]4876 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4877 * modes are already handled by the stream sock layer. We must not do
4878 * this in content-length mode because it could present the MSG_MORE
4879 * flag with the last block of forwarded data, which would cause an
4880 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4881 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4882 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4883 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4884
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4885 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4886 return 0;
4887
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4888 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4889 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4890 if (s->listener->counters)
4891 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4892 return_bad_req_stats_ok:
4893 txn->req.msg_state = HTTP_MSG_ERROR;
4894 if (txn->status) {
4895 /* Note: we don't send any error if some data were already sent */
4896 stream_int_retnclose(req->prod, NULL);
4897 } else {
4898 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4899 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4900 }
4901 req->analysers = 0;
4902 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]4903
4904 if (!(s->flags & SN_ERR_MASK))
4905 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4906 if (!(s->flags & SN_FINST_MASK)) {
4907 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4908 s->flags |= SN_FINST_H;
4909 else
4910 s->flags |= SN_FINST_D;
4911 }
4912 return 0;
4913
4914 aborted_xfer:
4915 txn->req.msg_state = HTTP_MSG_ERROR;
4916 if (txn->status) {
4917 /* Note: we don't send any error if some data were already sent */
4918 stream_int_retnclose(req->prod, NULL);
4919 } else {
4920 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4921 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4922 }
4923 req->analysers = 0;
4924 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4925
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4926 s->fe->fe_counters.srv_aborts++;
4927 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4928 if (objt_server(s->target))
4929 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4930
4931 if (!(s->flags & SN_ERR_MASK))
4932 s->flags |= SN_ERR_SRVCL;
4933 if (!(s->flags & SN_FINST_MASK)) {
4934 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4935 s->flags |= SN_FINST_H;
4936 else
4937 s->flags |= SN_FINST_D;
4938 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4939 return 0;
4940}
4941
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4942/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4943 * processing can continue on next analysers, or zero if it either needs more
4944 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4945 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4946 * when it has nothing left to do, and may remove any analyser when it wants to
4947 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4948 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4949int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4950{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4951 struct http_txn *txn = &s->txn;
4952 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4953 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4954 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4955 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4956 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4957
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4958 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]4959 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4960 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4961 rep,
4962 rep->rex, rep->wex,
4963 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4964 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4965 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4966
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4967 /*
4968 * Now parse the partial (or complete) lines.
4969 * We will check the response syntax, and also join multi-line
4970 * headers. An index of all the lines will be elaborated while
4971 * parsing.
4972 *
4973 * For the parsing, we use a 28 states FSM.
4974 *
4975 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4976 * rep->buf->p = beginning of response
4977 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4978 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4979 * msg->eol = end of current header or line (LF or CRLF)
4980 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4981 */
4982
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4983 /* There's a protected area at the end of the buffer for rewriting
4984 * purposes. We don't want to start to parse the request if the
4985 * protected area is affected, because we may have to move processed
4986 * data later, which is much more complicated.
4987 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4988 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4989 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4990 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4991 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4992 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4993 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4994 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4995 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4996 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4997 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4998 return 0;
4999 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5000 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
5001 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5002 }
5003
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5004 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5005 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5006 }
5007
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5008 /* 1: we might have to print this header in debug mode */
5009 if (unlikely((global.mode & MODE_DEBUG) &&
5010 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5011 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5012 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5013
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5014 sol = rep->buf->p;
5015 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5016 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5017
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5018 sol += hdr_idx_first_pos(&txn->hdr_idx);
5019 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5020
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5021 while (cur_idx) {
5022 eol = sol + txn->hdr_idx.v[cur_idx].len;
5023 debug_hdr("srvhdr", s, sol, eol);
5024 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5025 cur_idx = txn->hdr_idx.v[cur_idx].next;
5026 }
5027 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5028
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5029 /*
5030 * Now we quickly check if we have found a full valid response.
5031 * If not so, we check the FD and buffer states before leaving.
5032 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5033 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5034 * responses are checked first.
5035 *
5036 * Depending on whether the client is still there or not, we
5037 * may send an error response back or not. Note that normally
5038 * we should only check for HTTP status there, and check I/O
5039 * errors somewhere else.
5040 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5041
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5042 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5043 /* Invalid response */
5044 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5045 /* we detected a parsing error. We want to archive this response
5046 * in the dedicated proxy area for later troubleshooting.
5047 */
5048 hdr_response_bad:
5049 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5050 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]5051
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5052 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5053 if (objt_server(s->target)) {
5054 objt_server(s->target)->counters.failed_resp++;
5055 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5056 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5057 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5058 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5059 rep->analysers = 0;
5060 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5061 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5062 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5063 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5064
5065 if (!(s->flags & SN_ERR_MASK))
5066 s->flags |= SN_ERR_PRXCOND;
5067 if (!(s->flags & SN_FINST_MASK))
5068 s->flags |= SN_FINST_H;
5069
5070 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5071 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5072
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5073 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5074 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5075 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5076 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5077 goto hdr_response_bad;
5078 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5079
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5080 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5081 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5082 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5083 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]5084
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5085 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5086 if (objt_server(s->target)) {
5087 objt_server(s->target)->counters.failed_resp++;
5088 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5089 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5090
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5091 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5092 rep->analysers = 0;
5093 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5094 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5095 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5096 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5097
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5098 if (!(s->flags & SN_ERR_MASK))
5099 s->flags |= SN_ERR_SRVCL;
5100 if (!(s->flags & SN_FINST_MASK))
5101 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5102 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5103 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5104
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5105 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5106 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5107 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5108 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]5109
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5110 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5111 if (objt_server(s->target)) {
5112 objt_server(s->target)->counters.failed_resp++;
5113 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5114 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5115
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5116 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5117 rep->analysers = 0;
5118 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5119 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5120 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5121 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5122
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5123 if (!(s->flags & SN_ERR_MASK))
5124 s->flags |= SN_ERR_SRVTO;
5125 if (!(s->flags & SN_FINST_MASK))
5126 s->flags |= SN_FINST_H;
5127 return 0;
5128 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5129
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5130 /* client abort with an abortonclose */
5131 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5132 s->fe->fe_counters.cli_aborts++;
5133 s->be->be_counters.cli_aborts++;
5134 if (objt_server(s->target))
5135 objt_server(s->target)->counters.cli_aborts++;
5136
5137 rep->analysers = 0;
5138 channel_auto_close(rep);
5139
5140 txn->status = 400;
5141 bi_erase(rep);
5142 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5143
5144 if (!(s->flags & SN_ERR_MASK))
5145 s->flags |= SN_ERR_CLICL;
5146 if (!(s->flags & SN_FINST_MASK))
5147 s->flags |= SN_FINST_H;
5148
5149 /* process_session() will take care of the error */
5150 return 0;
5151 }
5152
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5153 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5154 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5155 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5156 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]5157
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5158 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5159 if (objt_server(s->target)) {
5160 objt_server(s->target)->counters.failed_resp++;
5161 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5162 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5163
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5164 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5165 rep->analysers = 0;
5166 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5167 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5168 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5169 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5170
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5171 if (!(s->flags & SN_ERR_MASK))
5172 s->flags |= SN_ERR_SRVCL;
5173 if (!(s->flags & SN_FINST_MASK))
5174 s->flags |= SN_FINST_H;
5175 return 0;
5176 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5177
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5178 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5179 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5180 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5181 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]5182
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5183 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5184 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5185 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5186
5187 if (!(s->flags & SN_ERR_MASK))
5188 s->flags |= SN_ERR_CLICL;
5189 if (!(s->flags & SN_FINST_MASK))
5190 s->flags |= SN_FINST_H;
5191
5192 /* process_session() will take care of the error */
5193 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5194 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5195
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5196 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5197 return 0;
5198 }
5199
5200 /* More interesting part now : we know that we have a complete
5201 * response which at least looks like HTTP. We have an indicator
5202 * of each header's length, so we can parse them quickly.
5203 */
5204
5205 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5206 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]5207
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5208 /*
5209 * 1: get the status code
5210 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5211 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5212 if (n < 1 || n > 5)
5213 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5214 /* when the client triggers a 4xx from the server, it's most often due
5215 * to a missing object or permission. These events should be tracked
5216 * because if they happen often, it may indicate a brute force or a
5217 * vulnerability scan.
5218 */
5219 if (n == 4)
5220 session_inc_http_err_ctr(s);
5221
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5222 if (objt_server(s->target))
5223 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5224
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5225 /* check if the response is HTTP/1.1 or above */
5226 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5227 ((rep->buf->p[5] > '1') ||
5228 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5229 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5230
5231 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5232 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]5233
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5234 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5235 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5236
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5237 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]5238
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5239 /* Adjust server's health based on status code. Note: status codes 501
5240 * and 505 are triggered on demand by client request, so we must not
5241 * count them as server failures.
5242 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5243 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5244 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5245 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5246 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5247 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5248 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5249
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5250 /*
5251 * 2: check for cacheability.
5252 */
5253
5254 switch (txn->status) {
5255 case 200:
5256 case 203:
5257 case 206:
5258 case 300:
5259 case 301:
5260 case 410:
5261 /* RFC2616 @13.4:
5262 * "A response received with a status code of
5263 * 200, 203, 206, 300, 301 or 410 MAY be stored
5264 * by a cache (...) unless a cache-control
5265 * directive prohibits caching."
5266 *
5267 * RFC2616 @9.5: POST method :
5268 * "Responses to this method are not cacheable,
5269 * unless the response includes appropriate
5270 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5271 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5272 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5273 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5274 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5275 break;
5276 default:
5277 break;
5278 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5279
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5280 /*
5281 * 3: we may need to capture headers
5282 */
5283 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5284 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5285 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5286 txn->rsp.cap, s->fe->rsp_cap);
5287
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5288 /* 4: determine the transfer-length.
5289 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5290 * the presence of a message-body in a RESPONSE and its transfer length
5291 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5292 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5293 * All responses to the HEAD request method MUST NOT include a
5294 * message-body, even though the presence of entity-header fields
5295 * might lead one to believe they do. All 1xx (informational), 204
5296 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5297 * message-body. All other responses do include a message-body,
5298 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5299 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5300 * 1. Any response which "MUST NOT" include a message-body (such as the
5301 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5302 * always terminated by the first empty line after the header fields,
5303 * regardless of the entity-header fields present in the message.
5304 *
5305 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5306 * the "chunked" transfer-coding (Section 6.2) is used, the
5307 * transfer-length is defined by the use of this transfer-coding.
5308 * If a Transfer-Encoding header field is present and the "chunked"
5309 * transfer-coding is not present, the transfer-length is defined by
5310 * the sender closing the connection.
5311 *
5312 * 3. If a Content-Length header field is present, its decimal value in
5313 * OCTETs represents both the entity-length and the transfer-length.
5314 * If a message is received with both a Transfer-Encoding header
5315 * field and a Content-Length header field, the latter MUST be ignored.
5316 *
5317 * 4. If the message uses the media type "multipart/byteranges", and
5318 * the transfer-length is not otherwise specified, then this self-
5319 * delimiting media type defines the transfer-length. This media
5320 * type MUST NOT be used unless the sender knows that the recipient
5321 * can parse it; the presence in a request of a Range header with
5322 * multiple byte-range specifiers from a 1.1 client implies that the
5323 * client can parse multipart/byteranges responses.
5324 *
5325 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5326 */
5327
5328 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5329 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5330 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5331 * FIXME: should we parse anyway and return an error on chunked encoding ?
5332 */
5333 if (txn->meth == HTTP_METH_HEAD ||
5334 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5335 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5336 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5337 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5338 goto skip_content_length;
5339 }
5340
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5341 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5342 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5343 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5344 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5345 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5346 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5347 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5348 /* bad transfer-encoding (chunked followed by something else) */
5349 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5350 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5351 break;
5352 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5353 }
5354
5355 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5356 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5357 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5358 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5359 signed long long cl;
5360
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5361 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5362 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5363 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5364 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5365
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5366 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5367 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5368 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5369 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5370
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5371 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5372 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5373 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5374 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5375
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5376 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5377 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5378 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5379 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5380
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5381 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5382 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5383 }
5384
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5385 if (s->fe->comp || s->be->comp)
5386 select_compression_response_header(s, rep->buf);
5387
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5388 /* FIXME: we should also implement the multipart/byterange method.
5389 * For now on, we resort to close mode in this case (unknown length).
5390 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5391skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5392
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5393 /* end of job, return OK */
5394 rep->analysers &= ~an_bit;
5395 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5396 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5397 return 1;
5398}
5399
5400/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5401 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5402 * and updates t->rep->analysers. It might make sense to explode it into several
5403 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5404 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5405int 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]5406{
5407 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5408 struct http_msg *msg = &txn->rsp;
5409 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5410 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5411
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5412 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]5413 now_ms, __FUNCTION__,
5414 t,
5415 rep,
5416 rep->rex, rep->wex,
5417 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5418 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5419 rep->analysers);
5420
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5421 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5422 return 0;
5423
5424 rep->analysers &= ~an_bit;
5425 rep->analyse_exp = TICK_ETERNITY;
5426
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5427 /* Now we have to check if we need to modify the Connection header.
5428 * This is more difficult on the response than it is on the request,
5429 * because we can have two different HTTP versions and we don't know
5430 * how the client will interprete a response. For instance, let's say
5431 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5432 * HTTP/1.1 response without any header. Maybe it will bound itself to
5433 * HTTP/1.0 because it only knows about it, and will consider the lack
5434 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5435 * the lack of header as a keep-alive. Thus we will use two flags
5436 * indicating how a request MAY be understood by the client. In case
5437 * of multiple possibilities, we'll fix the header to be explicit. If
5438 * ambiguous cases such as both close and keepalive are seen, then we
5439 * will fall back to explicit close. Note that we won't take risks with
5440 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5441 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5442 */
5443
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5444 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5445 txn->status == 101)) {
5446 /* Either we've established an explicit tunnel, or we're
5447 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5448 * to understand the next protocols. We have to switch to tunnel
5449 * mode, so that we transfer the request and responses then let
5450 * this protocol pass unmodified. When we later implement specific
5451 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5452 * header which contains information about that protocol for
5453 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5454 */
5455 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5456 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5457 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5458 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5459 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5460 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5461
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5462 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5463 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5464 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5465 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5466
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5467 /* now adjust header transformations depending on current state */
5468 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5469 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5470 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5471 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5472 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5473 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5474 else { /* SCL / KAL */
5475 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5476 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5477 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5478 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5479
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5480 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5481 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5482
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5483 /* Some keep-alive responses are converted to Server-close if
5484 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5485 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5486 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5487 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5488 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5489 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5490 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5491 }
5492
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5493 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5494 /*
5495 * 3: we will have to evaluate the filters.
5496 * As opposed to version 1.2, now they will be evaluated in the
5497 * filters order and not in the header order. This means that
5498 * each filter has to be validated among all headers.
5499 *
5500 * Filters are tried with ->be first, then with ->fe if it is
5501 * different from ->be.
5502 */
5503
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5504 cur_proxy = t->be;
5505 while (1) {
5506 struct proxy *rule_set = cur_proxy;
5507
5508 /* try headers filters */
5509 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5510 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5511 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5512 if (objt_server(t->target)) {
5513 objt_server(t->target)->counters.failed_resp++;
5514 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5515 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5516 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5517 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5518 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5519 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5520 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5521 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5522 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5523 if (!(t->flags & SN_ERR_MASK))
5524 t->flags |= SN_ERR_PRXCOND;
5525 if (!(t->flags & SN_FINST_MASK))
5526 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5527 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5528 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5529 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5530
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5531 /* has the response been denied ? */
5532 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5533 if (objt_server(t->target))
5534 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5535
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5536 t->be->be_counters.denied_resp++;
5537 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5538 if (t->listener->counters)
5539 t->listener->counters->denied_resp++;
5540
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5541 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5542 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5543
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5544 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5545 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5546 if (txn->status < 200)
5547 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5548 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5549 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]5550 ret = acl_pass(ret);
5551 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5552 ret = !ret;
5553 if (!ret)
5554 continue;
5555 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5556 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5557 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5558 }
5559
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5560 /* check whether we're already working on the frontend */
5561 if (cur_proxy == t->fe)
5562 break;
5563 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5564 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5565
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5566 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5567 * We may be facing a 100-continue response, in which case this
5568 * is not the right response, and we're waiting for the next one.
5569 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5570 * next one.
5571 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5572 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5573 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5574 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5575 msg->msg_state = HTTP_MSG_RPBEFORE;
5576 txn->status = 0;
5577 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5578 return 1;
5579 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5580 else if (unlikely(txn->status < 200))
5581 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5582
5583 /* we don't have any 1xx status code now */
5584
5585 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5586 * 4: check for server cookie.
5587 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5588 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5589 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5590 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5591
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5592
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5593 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5594 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5595 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5596 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]5597 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5598
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5599 /*
5600 * 6: add server cookie in the response if needed
5601 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5602 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5603 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5604 (!(t->flags & SN_DIRECT) ||
5605 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5606 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5607 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5608 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5609 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5610 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5611 /* the server is known, it's not the one the client requested, or the
5612 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5613 * insert a set-cookie here, except if we want to insert only on POST
5614 * requests and this one isn't. Note that servers which don't have cookies
5615 * (eg: some backup servers) will return a full cookie removal request.
5616 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5617 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5618 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5619 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5620 t->be->cookie_name);
5621 }
5622 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5623 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]5624
5625 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5626 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5627 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5628 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5629 trash.len += 5;
5630
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5631 if (t->be->cookie_maxlife) {
5632 /* emit first_date, which is either the original one or
5633 * the current date.
5634 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5635 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5636 s30tob64(txn->cookie_first_date ?
5637 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5638 (date.tv_sec+3) >> 2, trash.str + trash.len);
5639 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5640 }
5641 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5642 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5643 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5644
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5645 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5646 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5647
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5648 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5649 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5650
5651 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5652 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5653
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5654 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]5655 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5656
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5657 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5658 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5659 /* the server did not change, only the date was updated */
5660 txn->flags |= TX_SCK_UPDATED;
5661 else
5662 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5663
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5664 /* Here, we will tell an eventual cache on the client side that we don't
5665 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5666 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5667 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5668 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5669 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5670
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5671 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5672
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5673 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5674 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5675 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5676 }
5677 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5678
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5679 /*
5680 * 7: check if result will be cacheable with a cookie.
5681 * We'll block the response if security checks have caught
5682 * nasty things such as a cacheable cookie.
5683 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5684 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5685 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5686 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5687
5688 /* we're in presence of a cacheable response containing
5689 * a set-cookie header. We'll block it as requested by
5690 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5691 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5692 if (objt_server(t->target))
5693 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5694
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5695 t->be->be_counters.denied_resp++;
5696 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5697 if (t->listener->counters)
5698 t->listener->counters->denied_resp++;
5699
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5700 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5701 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5702 send_log(t->be, LOG_ALERT,
5703 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5704 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5705 goto return_srv_prx_502;
5706 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5707
5708 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5709 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5710 * If an "Upgrade" token is found, the header is left untouched in order
5711 * not to have to deal with some client bugs : some of them fail an upgrade
5712 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5713 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5714 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5715 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5716 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5717 unsigned int want_flags = 0;
5718
5719 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5720 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5721 /* we want a keep-alive response here. Keep-alive header
5722 * required if either side is not 1.1.
5723 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5724 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5725 want_flags |= TX_CON_KAL_SET;
5726 }
5727 else {
5728 /* we want a close response here. Close header required if
5729 * the server is 1.1, regardless of the client.
5730 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5731 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5732 want_flags |= TX_CON_CLO_SET;
5733 }
5734
5735 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5736 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5737 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5738
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5739 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5740 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5741 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5742 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5743
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5744 /*************************************************************
5745 * OK, that's finished for the headers. We have done what we *
5746 * could. Let's switch to the DATA state. *
5747 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5748
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5749 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5750
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5751 /* if the user wants to log as soon as possible, without counting
5752 * bytes from the server, then this is the right moment. We have
5753 * to temporarily assign bytes_out to log what we currently have.
5754 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5755 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5756 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5757 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5758 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5759 t->logs.bytes_out = 0;
5760 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5761
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5762 /* Note: we must not try to cheat by jumping directly to DATA,
5763 * otherwise we would not let the client side wake up.
5764 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5765
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5766 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5767 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5768 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5769}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5770
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5771/* This function is an analyser which forwards response body (including chunk
5772 * sizes if any). It is called as soon as we must forward, even if we forward
5773 * zero byte. The only situation where it must not be called is when we're in
5774 * tunnel mode and we want to forward till the close. It's used both to forward
5775 * remaining data and to resync after end of body. It expects the msg_state to
5776 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5777 * 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]5778 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5779 * bytes of pending data + the headers if not already done (between sol and sov).
5780 * 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]5781 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5782int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5783{
5784 struct http_txn *txn = &s->txn;
5785 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5786 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5787 static struct buffer *tmpbuf = NULL;
5788 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5789 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5790 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5791
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5792 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5793 return 0;
5794
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5795 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]5796 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5797 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5798 /* Output closed while we were sending data. We must abort and
5799 * wake the other side up.
5800 */
5801 msg->msg_state = HTTP_MSG_ERROR;
5802 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5803 return 1;
5804 }
5805
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5806 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5807 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5808
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5809 /* this is the first time we need the compression buffer */
5810 if (s->comp_algo != NULL && tmpbuf == NULL) {
5811 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5812 goto aborted_xfer; /* no memory */
5813 }
5814
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5815 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5816 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5817 * rep->buf.p still points to the beginning of the message and msg->sol
5818 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5819 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5820 channel_forward(res, msg->sov);
5821 msg->next = 0;
5822 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5823
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5824 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5825 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5826 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5827 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5828 }
5829
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5830 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5831 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5832 if (ret < 0)
5833 goto missing_data; /* not enough spaces in buffers */
5834 compressing = 1;
5835 }
5836
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5837 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5838 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5839 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5840 if (s->comp_algo == NULL) {
5841 bytes = msg->sov - msg->sol;
5842 if (msg->chunk_len || bytes) {
5843 msg->sol = msg->sov;
5844 msg->next -= bytes; /* will be forwarded */
5845 msg->chunk_len += bytes;
5846 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5847 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5848 }
5849
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5850 switch (msg->msg_state - HTTP_MSG_DATA) {
5851 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5852 if (compressing) {
5853 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5854 if (ret < 0)
5855 goto aborted_xfer;
5856 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5857
5858 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5859 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5860
5861 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5862 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5863 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5864 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5865 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5866 if (compressing && consumed_data) {
5867 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5868 compressing = 0;
5869 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5870 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5871 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5872 /* fall through for HTTP_MSG_CHUNK_CRLF */
5873
5874 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
5875 /* we want the CRLF after the data */
5876
5877 ret = http_skip_chunk_crlf(msg);
5878 if (ret == 0)
5879 goto missing_data;
5880 else if (ret < 0) {
5881 if (msg->err_pos >= 0)
5882 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
5883 goto return_bad_res;
5884 }
5885 /* skipping data in buffer for compression */
5886 if (compressing) {
5887 b_adv(res->buf, msg->next);
5888 msg->next = 0;
5889 msg->sov = 0;
5890 msg->sol = 0;
5891 }
5892 /* we're in MSG_CHUNK_SIZE now, fall through */
5893
5894 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5895 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5896 * set ->sov and ->next to point to the body and switch to DATA or
5897 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5898 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5899
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5900 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5901 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5902 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5903 else if (ret < 0) {
5904 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5905 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]5906 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5907 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5908 if (compressing) {
5909 if (likely(msg->chunk_len > 0)) {
5910 /* skipping data if we are in compression mode */
5911 b_adv(res->buf, msg->next);
5912 msg->next = 0;
5913 msg->sov = 0;
5914 msg->sol = 0;
5915 } else {
5916 if (consumed_data) {
5917 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5918 compressing = 0;
5919 }
5920 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5921 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]5922 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5923 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5924
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5925 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
5926 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5927 if (ret == 0)
5928 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5929 else if (ret < 0) {
5930 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5931 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]5932 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5933 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5934 if (s->comp_algo != NULL) {
5935 /* forwarding trailers */
5936 channel_forward(res, msg->next);
5937 msg->next = 0;
5938 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]5939 /* we're in HTTP_MSG_DONE now, but we might still have
5940 * some data pending, so let's loop over once.
5941 */
5942 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5943
5944 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5945 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5946
5947 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5948 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5949 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5950 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5951 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5952 if (http_resync_states(s)) {
5953 http_silent_debug(__LINE__, s);
5954 /* some state changes occurred, maybe the analyser
5955 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5956 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5957 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5958 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5959 /* response errors are most likely due to
5960 * the client aborting the transfer.
5961 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5962 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5963 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5964 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5965 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5966 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5967 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5968 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5969 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5970 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5971 }
5972 }
5973
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5974 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5975 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5976 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5977 compressing = 0;
5978 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5979
5980 if (res->flags & CF_SHUTW)
5981 goto aborted_xfer;
5982
5983 /* stop waiting for data if the input is closed before the end. If the
5984 * client side was already closed, it means that the client has aborted,
5985 * so we don't want to count this as a server abort. Otherwise it's a
5986 * server abort.
5987 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5988 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5989 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5990 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5991 if (!(s->flags & SN_ERR_MASK))
5992 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5993 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5994 if (objt_server(s->target))
5995 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5996 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5997 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5998
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5999 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6000 if (!s->req->analysers)
6001 goto return_bad_res;
6002
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6003 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6004 if (s->comp_algo == NULL) {
6005 bytes = msg->sov - msg->sol;
6006 if (msg->chunk_len || bytes) {
6007 msg->sol = msg->sov;
6008 msg->next -= bytes; /* will be forwarded */
6009 msg->chunk_len += bytes;
6010 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6011 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6012 }
6013
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6014 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6015 * 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]6016 * Similarly, with keep-alive on the client side, we don't want to forward a
6017 * close.
6018 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6019 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6020 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6021 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6022 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6023
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6024 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6025 * 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]6026 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6027 * modes are already handled by the stream sock layer. We must not do
6028 * this in content-length mode because it could present the MSG_MORE
6029 * flag with the last block of forwarded data, which would cause an
6030 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6031 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6032 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6033 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6034
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6035 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6036 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6037 return 0;
6038
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6039 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6040 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6041 if (objt_server(s->target))
6042 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6043
6044 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6045 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6046 /* don't send any error message as we're in the body */
6047 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6048 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6049 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]6050 if (objt_server(s->target))
6051 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6052
6053 if (!(s->flags & SN_ERR_MASK))
6054 s->flags |= SN_ERR_PRXCOND;
6055 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6056 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6057 return 0;
6058
6059 aborted_xfer:
6060 txn->rsp.msg_state = HTTP_MSG_ERROR;
6061 /* don't send any error message as we're in the body */
6062 stream_int_retnclose(res->cons, NULL);
6063 res->analysers = 0;
6064 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6065
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6066 s->fe->fe_counters.cli_aborts++;
6067 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6068 if (objt_server(s->target))
6069 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6070
6071 if (!(s->flags & SN_ERR_MASK))
6072 s->flags |= SN_ERR_CLICL;
6073 if (!(s->flags & SN_FINST_MASK))
6074 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6075 return 0;
6076}
6077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6078/* Iterate the same filter through all request headers.
6079 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6080 * Since it can manage the switch to another backend, it updates the per-proxy
6081 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6082 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6083int 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]6084{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6085 char term;
6086 char *cur_ptr, *cur_end, *cur_next;
6087 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6088 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6089 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6090 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6091
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6092 last_hdr = 0;
6093
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6094 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6095 old_idx = 0;
6096
6097 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6098 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6099 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6100 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6101 (exp->action == ACT_ALLOW ||
6102 exp->action == ACT_DENY ||
6103 exp->action == ACT_TARPIT))
6104 return 0;
6105
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6106 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6107 if (!cur_idx)
6108 break;
6109
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6110 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6111 cur_ptr = cur_next;
6112 cur_end = cur_ptr + cur_hdr->len;
6113 cur_next = cur_end + cur_hdr->cr + 1;
6114
6115 /* Now we have one header between cur_ptr and cur_end,
6116 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6117 */
6118
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6119 /* The annoying part is that pattern matching needs
6120 * that we modify the contents to null-terminate all
6121 * strings before testing them.
6122 */
6123
6124 term = *cur_end;
6125 *cur_end = '\0';
6126
6127 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6128 switch (exp->action) {
6129 case ACT_SETBE:
6130 /* It is not possible to jump a second time.
6131 * FIXME: should we return an HTTP/500 here so that
6132 * the admin knows there's a problem ?
6133 */
6134 if (t->be != t->fe)
6135 break;
6136
6137 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6138 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6139 last_hdr = 1;
6140 break;
6141
6142 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6143 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6144 last_hdr = 1;
6145 break;
6146
6147 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6148 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6149 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6150
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6151 t->fe->fe_counters.denied_req++;
6152 if (t->fe != t->be)
6153 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6154 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6155 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6156
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6157 break;
6158
6159 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6160 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6161 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6162
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6163 t->fe->fe_counters.denied_req++;
6164 if (t->fe != t->be)
6165 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6166 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6167 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6168
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6169 break;
6170
6171 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6172 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6173 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6174 /* FIXME: if the user adds a newline in the replacement, the
6175 * index will not be recalculated for now, and the new line
6176 * will not be counted as a new header.
6177 */
6178
6179 cur_end += delta;
6180 cur_next += delta;
6181 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6182 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6183 break;
6184
6185 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6186 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6187 cur_next += delta;
6188
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6189 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6190 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6191 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6192 cur_hdr->len = 0;
6193 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6194 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6195 break;
6196
6197 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6198 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6199 if (cur_end)
6200 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6201
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6202 /* keep the link from this header to next one in case of later
6203 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6204 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6205 old_idx = cur_idx;
6206 }
6207 return 0;
6208}
6209
6210
6211/* Apply the filter to the request line.
6212 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6213 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6214 * Since it can manage the switch to another backend, it updates the per-proxy
6215 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6216 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6217int 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]6218{
6219 char term;
6220 char *cur_ptr, *cur_end;
6221 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6222 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6223 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6224
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6225 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6226 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6227 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6228 (exp->action == ACT_ALLOW ||
6229 exp->action == ACT_DENY ||
6230 exp->action == ACT_TARPIT))
6231 return 0;
6232 else if (exp->action == ACT_REMOVE)
6233 return 0;
6234
6235 done = 0;
6236
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6237 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6238 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6239
6240 /* Now we have the request line between cur_ptr and cur_end */
6241
6242 /* The annoying part is that pattern matching needs
6243 * that we modify the contents to null-terminate all
6244 * strings before testing them.
6245 */
6246
6247 term = *cur_end;
6248 *cur_end = '\0';
6249
6250 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6251 switch (exp->action) {
6252 case ACT_SETBE:
6253 /* It is not possible to jump a second time.
6254 * FIXME: should we return an HTTP/500 here so that
6255 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6256 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6257 if (t->be != t->fe)
6258 break;
6259
6260 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6261 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6262 done = 1;
6263 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6264
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6265 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6266 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6267 done = 1;
6268 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6269
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6270 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6271 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6272
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6273 t->fe->fe_counters.denied_req++;
6274 if (t->fe != t->be)
6275 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6276 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6277 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6278
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6279 done = 1;
6280 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6281
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6282 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6283 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6284
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6285 t->fe->fe_counters.denied_req++;
6286 if (t->fe != t->be)
6287 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6288 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6289 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6290
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6291 done = 1;
6292 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6293
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6294 case ACT_REPLACE:
6295 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6296 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6297 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6298 /* FIXME: if the user adds a newline in the replacement, the
6299 * index will not be recalculated for now, and the new line
6300 * will not be counted as a new header.
6301 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6302
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6303 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6304 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6305 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6306 HTTP_MSG_RQMETH,
6307 cur_ptr, cur_end + 1,
6308 NULL, NULL);
6309 if (unlikely(!cur_end))
6310 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6311
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6312 /* we have a full request and we know that we have either a CR
6313 * or an LF at <ptr>.
6314 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6315 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6316 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]6317 /* there is no point trying this regex on headers */
6318 return 1;
6319 }
6320 }
6321 *cur_end = term; /* restore the string terminator */
6322 return done;
6323}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6324
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6325
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6326
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6327/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6328 * 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]6329 * 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]6330 * unparsable request. Since it can manage the switch to another backend, it
6331 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6332 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6333int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6334{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6335 struct http_txn *txn = &s->txn;
6336 struct hdr_exp *exp;
6337
6338 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6339 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6340
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6341 /*
6342 * The interleaving of transformations and verdicts
6343 * makes it difficult to decide to continue or stop
6344 * the evaluation.
6345 */
6346
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6347 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6348 break;
6349
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6350 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6351 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6352 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6353 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6354
6355 /* if this filter had a condition, evaluate it now and skip to
6356 * next filter if the condition does not match.
6357 */
6358 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6359 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]6360 ret = acl_pass(ret);
6361 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6362 ret = !ret;
6363
6364 if (!ret)
6365 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6366 }
6367
6368 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6369 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6370 if (unlikely(ret < 0))
6371 return -1;
6372
6373 if (likely(ret == 0)) {
6374 /* The filter did not match the request, it can be
6375 * iterated through all headers.
6376 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6377 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6378 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6379 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6380 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6381}
6382
6383
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6384
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6385/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6386 * Try to retrieve the server associated to the appsession.
6387 * If the server is found, it's assigned to the session.
6388 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6389void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6390 struct http_txn *txn = &t->txn;
6391 appsess *asession = NULL;
6392 char *sessid_temp = NULL;
6393
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6394 if (len > t->be->appsession_len) {
6395 len = t->be->appsession_len;
6396 }
6397
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6398 if (t->be->options2 & PR_O2_AS_REQL) {
6399 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6400 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6401 /* 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]6402 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6403 }
6404
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6405 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6406 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6407 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6408 return;
6409 }
6410
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6411 memcpy(txn->sessid, buf, len);
6412 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6413 }
6414
6415 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6416 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6417 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6418 return;
6419 }
6420
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6421 memcpy(sessid_temp, buf, len);
6422 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6423
6424 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6425 /* free previously allocated memory */
6426 pool_free2(apools.sessid, sessid_temp);
6427
6428 if (asession != NULL) {
6429 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6430 if (!(t->be->options2 & PR_O2_AS_REQL))
6431 asession->request_count++;
6432
6433 if (asession->serverid != NULL) {
6434 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6435
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6436 while (srv) {
6437 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6438 if ((srv->state & SRV_RUNNING) ||
6439 (t->be->options & PR_O_PERSIST) ||
6440 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6441 /* we found the server and it's usable */
6442 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6443 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6444 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6445 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6446
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6447 break;
6448 } else {
6449 txn->flags &= ~TX_CK_MASK;
6450 txn->flags |= TX_CK_DOWN;
6451 }
6452 }
6453 srv = srv->next;
6454 }
6455 }
6456 }
6457}
6458
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6459/* Find the end of a cookie value contained between <s> and <e>. It works the
6460 * same way as with headers above except that the semi-colon also ends a token.
6461 * See RFC2965 for more information. Note that it requires a valid header to
6462 * return a valid result.
6463 */
6464char *find_cookie_value_end(char *s, const char *e)
6465{
6466 int quoted, qdpair;
6467
6468 quoted = qdpair = 0;
6469 for (; s < e; s++) {
6470 if (qdpair) qdpair = 0;
6471 else if (quoted) {
6472 if (*s == '\\') qdpair = 1;
6473 else if (*s == '"') quoted = 0;
6474 }
6475 else if (*s == '"') quoted = 1;
6476 else if (*s == ',' || *s == ';') return s;
6477 }
6478 return s;
6479}
6480
6481/* Delete a value in a header between delimiters <from> and <next> in buffer
6482 * <buf>. The number of characters displaced is returned, and the pointer to
6483 * the first delimiter is updated if required. The function tries as much as
6484 * possible to respect the following principles :
6485 * - replace <from> delimiter by the <next> one unless <from> points to a
6486 * colon, in which case <next> is simply removed
6487 * - set exactly one space character after the new first delimiter, unless
6488 * there are not enough characters in the block being moved to do so.
6489 * - remove unneeded spaces before the previous delimiter and after the new
6490 * one.
6491 *
6492 * It is the caller's responsibility to ensure that :
6493 * - <from> points to a valid delimiter or the colon ;
6494 * - <next> points to a valid delimiter or the final CR/LF ;
6495 * - there are non-space chars before <from> ;
6496 * - there is a CR/LF at or after <next>.
6497 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6498int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6499{
6500 char *prev = *from;
6501
6502 if (*prev == ':') {
6503 /* We're removing the first value, preserve the colon and add a
6504 * space if possible.
6505 */
6506 if (!http_is_crlf[(unsigned char)*next])
6507 next++;
6508 prev++;
6509 if (prev < next)
6510 *prev++ = ' ';
6511
6512 while (http_is_spht[(unsigned char)*next])
6513 next++;
6514 } else {
6515 /* Remove useless spaces before the old delimiter. */
6516 while (http_is_spht[(unsigned char)*(prev-1)])
6517 prev--;
6518 *from = prev;
6519
6520 /* copy the delimiter and if possible a space if we're
6521 * not at the end of the line.
6522 */
6523 if (!http_is_crlf[(unsigned char)*next]) {
6524 *prev++ = *next++;
6525 if (prev + 1 < next)
6526 *prev++ = ' ';
6527 while (http_is_spht[(unsigned char)*next])
6528 next++;
6529 }
6530 }
6531 return buffer_replace2(buf, prev, next, NULL, 0);
6532}
6533
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6534/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6535 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6536 * desirable to call it only when needed. This code is quite complex because
6537 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6538 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6539 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6540void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6541{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6542 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6543 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6544 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6545 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6546 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6547
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6548 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6549 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6550 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6551
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6552 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6553 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6554 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6555
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6556 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6557 hdr_beg = hdr_next;
6558 hdr_end = hdr_beg + cur_hdr->len;
6559 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6560
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6561 /* We have one full header between hdr_beg and hdr_end, and the
6562 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6563 * "Cookie:" headers.
6564 */
6565
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6566 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6567 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6568 old_idx = cur_idx;
6569 continue;
6570 }
6571
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6572 del_from = NULL; /* nothing to be deleted */
6573 preserve_hdr = 0; /* assume we may kill the whole header */
6574
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6575 /* Now look for cookies. Conforming to RFC2109, we have to support
6576 * attributes whose name begin with a '$', and associate them with
6577 * the right cookie, if we want to delete this cookie.
6578 * So there are 3 cases for each cookie read :
6579 * 1) it's a special attribute, beginning with a '$' : ignore it.
6580 * 2) it's a server id cookie that we *MAY* want to delete : save
6581 * some pointers on it (last semi-colon, beginning of cookie...)
6582 * 3) it's an application cookie : we *MAY* have to delete a previous
6583 * "special" cookie.
6584 * At the end of loop, if a "special" cookie remains, we may have to
6585 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6586 * *MUST* delete it.
6587 *
6588 * Note: RFC2965 is unclear about the processing of spaces around
6589 * the equal sign in the ATTR=VALUE form. A careful inspection of
6590 * the RFC explicitly allows spaces before it, and not within the
6591 * tokens (attrs or values). An inspection of RFC2109 allows that
6592 * too but section 10.1.3 lets one think that spaces may be allowed
6593 * after the equal sign too, resulting in some (rare) buggy
6594 * implementations trying to do that. So let's do what servers do.
6595 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6596 * allowed quoted strings in values, with any possible character
6597 * after a backslash, including control chars and delimitors, which
6598 * causes parsing to become ambiguous. Browsers also allow spaces
6599 * within values even without quotes.
6600 *
6601 * We have to keep multiple pointers in order to support cookie
6602 * removal at the beginning, middle or end of header without
6603 * corrupting the header. All of these headers are valid :
6604 *
6605 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6606 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6607 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6608 * | | | | | | | | |
6609 * | | | | | | | | hdr_end <--+
6610 * | | | | | | | +--> next
6611 * | | | | | | +----> val_end
6612 * | | | | | +-----------> val_beg
6613 * | | | | +--------------> equal
6614 * | | | +----------------> att_end
6615 * | | +---------------------> att_beg
6616 * | +--------------------------> prev
6617 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6618 */
6619
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6620 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6621 /* Iterate through all cookies on this line */
6622
6623 /* find att_beg */
6624 att_beg = prev + 1;
6625 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6626 att_beg++;
6627
6628 /* find att_end : this is the first character after the last non
6629 * space before the equal. It may be equal to hdr_end.
6630 */
6631 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6632
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6633 while (equal < hdr_end) {
6634 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6635 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6636 if (http_is_spht[(unsigned char)*equal++])
6637 continue;
6638 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6639 }
6640
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6641 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6642 * is between <att_beg> and <equal>, both may be identical.
6643 */
6644
6645 /* look for end of cookie if there is an equal sign */
6646 if (equal < hdr_end && *equal == '=') {
6647 /* look for the beginning of the value */
6648 val_beg = equal + 1;
6649 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6650 val_beg++;
6651
6652 /* find the end of the value, respecting quotes */
6653 next = find_cookie_value_end(val_beg, hdr_end);
6654
6655 /* make val_end point to the first white space or delimitor after the value */
6656 val_end = next;
6657 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6658 val_end--;
6659 } else {
6660 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6661 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6662
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6663 /* We have nothing to do with attributes beginning with '$'. However,
6664 * they will automatically be removed if a header before them is removed,
6665 * since they're supposed to be linked together.
6666 */
6667 if (*att_beg == '$')
6668 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6669
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6670 /* Ignore cookies with no equal sign */
6671 if (equal == next) {
6672 /* This is not our cookie, so we must preserve it. But if we already
6673 * scheduled another cookie for removal, we cannot remove the
6674 * complete header, but we can remove the previous block itself.
6675 */
6676 preserve_hdr = 1;
6677 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6678 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6679 val_end += delta;
6680 next += delta;
6681 hdr_end += delta;
6682 hdr_next += delta;
6683 cur_hdr->len += delta;
6684 http_msg_move_end(&txn->req, delta);
6685 prev = del_from;
6686 del_from = NULL;
6687 }
6688 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6689 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6690
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6691 /* if there are spaces around the equal sign, we need to
6692 * strip them otherwise we'll get trouble for cookie captures,
6693 * or even for rewrites. Since this happens extremely rarely,
6694 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6695 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6696 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6697 int stripped_before = 0;
6698 int stripped_after = 0;
6699
6700 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6701 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6702 equal += stripped_before;
6703 val_beg += stripped_before;
6704 }
6705
6706 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6707 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6708 val_beg += stripped_after;
6709 stripped_before += stripped_after;
6710 }
6711
6712 val_end += stripped_before;
6713 next += stripped_before;
6714 hdr_end += stripped_before;
6715 hdr_next += stripped_before;
6716 cur_hdr->len += stripped_before;
6717 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6718 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6719 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6720
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6721 /* First, let's see if we want to capture this cookie. We check
6722 * that we don't already have a client side cookie, because we
6723 * can only capture one. Also as an optimisation, we ignore
6724 * cookies shorter than the declared name.
6725 */
6726 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6727 (val_end - att_beg >= t->fe->capture_namelen) &&
6728 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6729 int log_len = val_end - att_beg;
6730
6731 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6732 Alert("HTTP logging : out of memory.\n");
6733 } else {
6734 if (log_len > t->fe->capture_len)
6735 log_len = t->fe->capture_len;
6736 memcpy(txn->cli_cookie, att_beg, log_len);
6737 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6738 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6739 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6740
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6741 /* Persistence cookies in passive, rewrite or insert mode have the
6742 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6743 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6744 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6745 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6746 * For cookies in prefix mode, the form is :
6747 *
6748 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6749 */
6750 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6751 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6752 struct server *srv = t->be->srv;
6753 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6754
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6755 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6756 * have the server ID between val_beg and delim, and the original cookie between
6757 * delim+1 and val_end. Otherwise, delim==val_end :
6758 *
6759 * Cookie: NAME=SRV; # in all but prefix modes
6760 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6761 * | || || | |+-> next
6762 * | || || | +--> val_end
6763 * | || || +---------> delim
6764 * | || |+------------> val_beg
6765 * | || +-------------> att_end = equal
6766 * | |+-----------------> att_beg
6767 * | +------------------> prev
6768 * +-------------------------> hdr_beg
6769 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6770
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6771 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6772 for (delim = val_beg; delim < val_end; delim++)
6773 if (*delim == COOKIE_DELIM)
6774 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6775 } else {
6776 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6777 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6778 /* Now check if the cookie contains a date field, which would
6779 * appear after a vertical bar ('|') just after the server name
6780 * and before the delimiter.
6781 */
6782 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6783 if (vbar1) {
6784 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6785 * right is the last seen date. It is a base64 encoded
6786 * 30-bit value representing the UNIX date since the
6787 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6788 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6789 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6790 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6791 if (val_end - vbar1 >= 5) {
6792 val = b64tos30(vbar1);
6793 if (val > 0)
6794 txn->cookie_last_date = val << 2;
6795 }
6796 /* look for a second vertical bar */
6797 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6798 if (vbar1 && (val_end - vbar1 > 5)) {
6799 val = b64tos30(vbar1 + 1);
6800 if (val > 0)
6801 txn->cookie_first_date = val << 2;
6802 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6803 }
6804 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6805
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6806 /* if the cookie has an expiration date and the proxy wants to check
6807 * it, then we do that now. We first check if the cookie is too old,
6808 * then only if it has expired. We detect strict overflow because the
6809 * time resolution here is not great (4 seconds). Cookies with dates
6810 * in the future are ignored if their offset is beyond one day. This
6811 * allows an admin to fix timezone issues without expiring everyone
6812 * and at the same time avoids keeping unwanted side effects for too
6813 * long.
6814 */
6815 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6816 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6817 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6818 txn->flags &= ~TX_CK_MASK;
6819 txn->flags |= TX_CK_OLD;
6820 delim = val_beg; // let's pretend we have not found the cookie
6821 txn->cookie_first_date = 0;
6822 txn->cookie_last_date = 0;
6823 }
6824 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6825 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6826 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6827 txn->flags &= ~TX_CK_MASK;
6828 txn->flags |= TX_CK_EXPIRED;
6829 delim = val_beg; // let's pretend we have not found the cookie
6830 txn->cookie_first_date = 0;
6831 txn->cookie_last_date = 0;
6832 }
6833
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6834 /* Here, we'll look for the first running server which supports the cookie.
6835 * This allows to share a same cookie between several servers, for example
6836 * to dedicate backup servers to specific servers only.
6837 * However, to prevent clients from sticking to cookie-less backup server
6838 * when they have incidentely learned an empty cookie, we simply ignore
6839 * empty cookies and mark them as invalid.
6840 * The same behaviour is applied when persistence must be ignored.
6841 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6842 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6843 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6844
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6845 while (srv) {
6846 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6847 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6848 if ((srv->state & SRV_RUNNING) ||
6849 (t->be->options & PR_O_PERSIST) ||
6850 (t->flags & SN_FORCE_PRST)) {
6851 /* we found the server and we can use it */
6852 txn->flags &= ~TX_CK_MASK;
6853 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6854 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6855 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6856 break;
6857 } else {
6858 /* we found a server, but it's down,
6859 * mark it as such and go on in case
6860 * another one is available.
6861 */
6862 txn->flags &= ~TX_CK_MASK;
6863 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6864 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6865 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6866 srv = srv->next;
6867 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6868
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6869 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6870 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6871 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6872 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6873 txn->flags |= TX_CK_UNUSED;
6874 else
6875 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6876 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6877
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6878 /* depending on the cookie mode, we may have to either :
6879 * - delete the complete cookie if we're in insert+indirect mode, so that
6880 * the server never sees it ;
6881 * - remove the server id from the cookie value, and tag the cookie as an
6882 * application cookie so that it does not get accidentely removed later,
6883 * if we're in cookie prefix mode
6884 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6885 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6886 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6887
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6888 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6889 val_end += delta;
6890 next += delta;
6891 hdr_end += delta;
6892 hdr_next += delta;
6893 cur_hdr->len += delta;
6894 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6895
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6896 del_from = NULL;
6897 preserve_hdr = 1; /* we want to keep this cookie */
6898 }
6899 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6900 (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]6901 del_from = prev;
6902 }
6903 } else {
6904 /* This is not our cookie, so we must preserve it. But if we already
6905 * scheduled another cookie for removal, we cannot remove the
6906 * complete header, but we can remove the previous block itself.
6907 */
6908 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6909
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6910 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6911 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6912 if (att_beg >= del_from)
6913 att_beg += delta;
6914 if (att_end >= del_from)
6915 att_end += delta;
6916 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6917 val_end += delta;
6918 next += delta;
6919 hdr_end += delta;
6920 hdr_next += delta;
6921 cur_hdr->len += delta;
6922 http_msg_move_end(&txn->req, delta);
6923 prev = del_from;
6924 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6925 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6926 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6927
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6928 /* Look for the appsession cookie unless persistence must be ignored */
6929 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6930 int cmp_len, value_len;
6931 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6932
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6933 if (t->be->options2 & PR_O2_AS_PFX) {
6934 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6935 value_begin = att_beg + t->be->appsession_name_len;
6936 value_len = val_end - att_beg - t->be->appsession_name_len;
6937 } else {
6938 cmp_len = att_end - att_beg;
6939 value_begin = val_beg;
6940 value_len = val_end - val_beg;
6941 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6942
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6943 /* let's see if the cookie is our appcookie */
6944 if (cmp_len == t->be->appsession_name_len &&
6945 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6946 manage_client_side_appsession(t, value_begin, value_len);
6947 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6948 }
6949
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6950 /* continue with next cookie on this header line */
6951 att_beg = next;
6952 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6953
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6954 /* There are no more cookies on this line.
6955 * We may still have one (or several) marked for deletion at the
6956 * end of the line. We must do this now in two ways :
6957 * - if some cookies must be preserved, we only delete from the
6958 * mark to the end of line ;
6959 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6960 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6961 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6962 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6963 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6964 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6965 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6966 cur_hdr->len += delta;
6967 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6968 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6969
6970 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6971 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6972 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6973 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6974 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6975 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6976 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6977 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6978 }
6979
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6980 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6981 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6982 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6983}
6984
6985
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6986/* Iterate the same filter through all response headers contained in <rtr>.
6987 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6988 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6989int 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]6990{
6991 char term;
6992 char *cur_ptr, *cur_end, *cur_next;
6993 int cur_idx, old_idx, last_hdr;
6994 struct http_txn *txn = &t->txn;
6995 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6996 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6997
6998 last_hdr = 0;
6999
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7000 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7001 old_idx = 0;
7002
7003 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7004 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7005 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7006 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7007 (exp->action == ACT_ALLOW ||
7008 exp->action == ACT_DENY))
7009 return 0;
7010
7011 cur_idx = txn->hdr_idx.v[old_idx].next;
7012 if (!cur_idx)
7013 break;
7014
7015 cur_hdr = &txn->hdr_idx.v[cur_idx];
7016 cur_ptr = cur_next;
7017 cur_end = cur_ptr + cur_hdr->len;
7018 cur_next = cur_end + cur_hdr->cr + 1;
7019
7020 /* Now we have one header between cur_ptr and cur_end,
7021 * and the next header starts at cur_next.
7022 */
7023
7024 /* The annoying part is that pattern matching needs
7025 * that we modify the contents to null-terminate all
7026 * strings before testing them.
7027 */
7028
7029 term = *cur_end;
7030 *cur_end = '\0';
7031
7032 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7033 switch (exp->action) {
7034 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7035 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7036 last_hdr = 1;
7037 break;
7038
7039 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7040 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7041 last_hdr = 1;
7042 break;
7043
7044 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7045 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7046 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7047 /* FIXME: if the user adds a newline in the replacement, the
7048 * index will not be recalculated for now, and the new line
7049 * will not be counted as a new header.
7050 */
7051
7052 cur_end += delta;
7053 cur_next += delta;
7054 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7055 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7056 break;
7057
7058 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7059 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7060 cur_next += delta;
7061
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7062 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7063 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7064 txn->hdr_idx.used--;
7065 cur_hdr->len = 0;
7066 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7067 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7068 break;
7069
7070 }
7071 }
7072 if (cur_end)
7073 *cur_end = term; /* restore the string terminator */
7074
7075 /* keep the link from this header to next one in case of later
7076 * removal of next header.
7077 */
7078 old_idx = cur_idx;
7079 }
7080 return 0;
7081}
7082
7083
7084/* Apply the filter to the status line in the response buffer <rtr>.
7085 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7086 * or -1 if a replacement resulted in an invalid status line.
7087 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7088int 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]7089{
7090 char term;
7091 char *cur_ptr, *cur_end;
7092 int done;
7093 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7094 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7095
7096
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7097 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7098 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7099 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7100 (exp->action == ACT_ALLOW ||
7101 exp->action == ACT_DENY))
7102 return 0;
7103 else if (exp->action == ACT_REMOVE)
7104 return 0;
7105
7106 done = 0;
7107
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7108 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7109 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7110
7111 /* Now we have the status line between cur_ptr and cur_end */
7112
7113 /* The annoying part is that pattern matching needs
7114 * that we modify the contents to null-terminate all
7115 * strings before testing them.
7116 */
7117
7118 term = *cur_end;
7119 *cur_end = '\0';
7120
7121 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7122 switch (exp->action) {
7123 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7124 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7125 done = 1;
7126 break;
7127
7128 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7129 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7130 done = 1;
7131 break;
7132
7133 case ACT_REPLACE:
7134 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7135 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7136 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7137 /* FIXME: if the user adds a newline in the replacement, the
7138 * index will not be recalculated for now, and the new line
7139 * will not be counted as a new header.
7140 */
7141
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7142 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7143 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7144 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7145 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7146 cur_ptr, cur_end + 1,
7147 NULL, NULL);
7148 if (unlikely(!cur_end))
7149 return -1;
7150
7151 /* we have a full respnse and we know that we have either a CR
7152 * or an LF at <ptr>.
7153 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7154 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]7155 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]7156 /* there is no point trying this regex on headers */
7157 return 1;
7158 }
7159 }
7160 *cur_end = term; /* restore the string terminator */
7161 return done;
7162}
7163
7164
7165
7166/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7167 * 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]7168 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7169 * unparsable response.
7170 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7171int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7172{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7173 struct http_txn *txn = &s->txn;
7174 struct hdr_exp *exp;
7175
7176 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7177 int ret;
7178
7179 /*
7180 * The interleaving of transformations and verdicts
7181 * makes it difficult to decide to continue or stop
7182 * the evaluation.
7183 */
7184
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7185 if (txn->flags & TX_SVDENY)
7186 break;
7187
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7188 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7189 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7190 exp->action == ACT_PASS)) {
7191 exp = exp->next;
7192 continue;
7193 }
7194
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7195 /* if this filter had a condition, evaluate it now and skip to
7196 * next filter if the condition does not match.
7197 */
7198 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7199 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]7200 ret = acl_pass(ret);
7201 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7202 ret = !ret;
7203 if (!ret)
7204 continue;
7205 }
7206
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7207 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7208 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7209 if (unlikely(ret < 0))
7210 return -1;
7211
7212 if (likely(ret == 0)) {
7213 /* The filter did not match the response, it can be
7214 * iterated through all headers.
7215 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7216 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7217 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7218 }
7219 return 0;
7220}
7221
7222
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7223/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7224 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7225 * desirable to call it only when needed. This function is also used when we
7226 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7227 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7228void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7229{
7230 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7231 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7232 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7233 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7234 char *hdr_beg, *hdr_end, *hdr_next;
7235 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7236
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7237 /* Iterate through the headers.
7238 * we start with the start line.
7239 */
7240 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7241 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7242
7243 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7244 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7245 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7246
7247 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7248 hdr_beg = hdr_next;
7249 hdr_end = hdr_beg + cur_hdr->len;
7250 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7251
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7252 /* We have one full header between hdr_beg and hdr_end, and the
7253 * next header starts at hdr_next. We're only interested in
7254 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7255 */
7256
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7257 is_cookie2 = 0;
7258 prev = hdr_beg + 10;
7259 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7260 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7261 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7262 if (!val) {
7263 old_idx = cur_idx;
7264 continue;
7265 }
7266 is_cookie2 = 1;
7267 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7268 }
7269
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7270 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7271 * <prev> points to the colon.
7272 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7273 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7274
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7275 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7276 * check-cache is enabled) and we are not interested in checking
7277 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7278 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7279 if (t->be->cookie_name == NULL &&
7280 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7281 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7282 return;
7283
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7284 /* OK so now we know we have to process this response cookie.
7285 * The format of the Set-Cookie header is slightly different
7286 * from the format of the Cookie header in that it does not
7287 * support the comma as a cookie delimiter (thus the header
7288 * cannot be folded) because the Expires attribute described in
7289 * the original Netscape's spec may contain an unquoted date
7290 * with a comma inside. We have to live with this because
7291 * many browsers don't support Max-Age and some browsers don't
7292 * support quoted strings. However the Set-Cookie2 header is
7293 * clean.
7294 *
7295 * We have to keep multiple pointers in order to support cookie
7296 * removal at the beginning, middle or end of header without
7297 * corrupting the header (in case of set-cookie2). A special
7298 * pointer, <scav> points to the beginning of the set-cookie-av
7299 * fields after the first semi-colon. The <next> pointer points
7300 * either to the end of line (set-cookie) or next unquoted comma
7301 * (set-cookie2). All of these headers are valid :
7302 *
7303 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7304 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7305 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7306 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7307 * | | | | | | | | | |
7308 * | | | | | | | | +-> next hdr_end <--+
7309 * | | | | | | | +------------> scav
7310 * | | | | | | +--------------> val_end
7311 * | | | | | +--------------------> val_beg
7312 * | | | | +----------------------> equal
7313 * | | | +------------------------> att_end
7314 * | | +----------------------------> att_beg
7315 * | +------------------------------> prev
7316 * +-----------------------------------------> hdr_beg
7317 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7318
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7319 for (; prev < hdr_end; prev = next) {
7320 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7321
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7322 /* find att_beg */
7323 att_beg = prev + 1;
7324 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7325 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7326
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7327 /* find att_end : this is the first character after the last non
7328 * space before the equal. It may be equal to hdr_end.
7329 */
7330 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7331
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7332 while (equal < hdr_end) {
7333 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7334 break;
7335 if (http_is_spht[(unsigned char)*equal++])
7336 continue;
7337 att_end = equal;
7338 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7339
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7340 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7341 * is between <att_beg> and <equal>, both may be identical.
7342 */
7343
7344 /* look for end of cookie if there is an equal sign */
7345 if (equal < hdr_end && *equal == '=') {
7346 /* look for the beginning of the value */
7347 val_beg = equal + 1;
7348 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7349 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7350
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7351 /* find the end of the value, respecting quotes */
7352 next = find_cookie_value_end(val_beg, hdr_end);
7353
7354 /* make val_end point to the first white space or delimitor after the value */
7355 val_end = next;
7356 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7357 val_end--;
7358 } else {
7359 /* <equal> points to next comma, semi-colon or EOL */
7360 val_beg = val_end = next = equal;
7361 }
7362
7363 if (next < hdr_end) {
7364 /* Set-Cookie2 supports multiple cookies, and <next> points to
7365 * a colon or semi-colon before the end. So skip all attr-value
7366 * pairs and look for the next comma. For Set-Cookie, since
7367 * commas are permitted in values, skip to the end.
7368 */
7369 if (is_cookie2)
7370 next = find_hdr_value_end(next, hdr_end);
7371 else
7372 next = hdr_end;
7373 }
7374
7375 /* Now everything is as on the diagram above */
7376
7377 /* Ignore cookies with no equal sign */
7378 if (equal == val_end)
7379 continue;
7380
7381 /* If there are spaces around the equal sign, we need to
7382 * strip them otherwise we'll get trouble for cookie captures,
7383 * or even for rewrites. Since this happens extremely rarely,
7384 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7385 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7386 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7387 int stripped_before = 0;
7388 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7389
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7390 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7391 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7392 equal += stripped_before;
7393 val_beg += stripped_before;
7394 }
7395
7396 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7397 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7398 val_beg += stripped_after;
7399 stripped_before += stripped_after;
7400 }
7401
7402 val_end += stripped_before;
7403 next += stripped_before;
7404 hdr_end += stripped_before;
7405 hdr_next += stripped_before;
7406 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7407 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7408 }
7409
7410 /* First, let's see if we want to capture this cookie. We check
7411 * that we don't already have a server side cookie, because we
7412 * can only capture one. Also as an optimisation, we ignore
7413 * cookies shorter than the declared name.
7414 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7415 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7416 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7417 (val_end - att_beg >= t->fe->capture_namelen) &&
7418 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7419 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7420 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7421 Alert("HTTP logging : out of memory.\n");
7422 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7423 else {
7424 if (log_len > t->fe->capture_len)
7425 log_len = t->fe->capture_len;
7426 memcpy(txn->srv_cookie, att_beg, log_len);
7427 txn->srv_cookie[log_len] = 0;
7428 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7429 }
7430
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7431 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7432 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7433 if (!(t->flags & SN_IGNORE_PRST) &&
7434 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7435 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7436 /* assume passive cookie by default */
7437 txn->flags &= ~TX_SCK_MASK;
7438 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7439
7440 /* If the cookie is in insert mode on a known server, we'll delete
7441 * this occurrence because we'll insert another one later.
7442 * 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]7443 * a direct access.
7444 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7445 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7446 /* The "preserve" flag was set, we don't want to touch the
7447 * server's cookie.
7448 */
7449 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7450 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7451 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7452 /* this cookie must be deleted */
7453 if (*prev == ':' && next == hdr_end) {
7454 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7455 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7456 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7457 txn->hdr_idx.used--;
7458 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7459 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7460 hdr_next += delta;
7461 http_msg_move_end(&txn->rsp, delta);
7462 /* note: while both invalid now, <next> and <hdr_end>
7463 * are still equal, so the for() will stop as expected.
7464 */
7465 } else {
7466 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7467 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7468 next = prev;
7469 hdr_end += delta;
7470 hdr_next += delta;
7471 cur_hdr->len += delta;
7472 http_msg_move_end(&txn->rsp, delta);
7473 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7474 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7475 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7476 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7477 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7478 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7479 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7480 * with this server since we know it.
7481 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7482 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7483 next += delta;
7484 hdr_end += delta;
7485 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7486 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7487 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7488
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7489 txn->flags &= ~TX_SCK_MASK;
7490 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7491 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7492 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7493 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7494 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7495 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7496 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7497 next += delta;
7498 hdr_end += delta;
7499 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7500 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7501 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7502
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7503 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7504 txn->flags &= ~TX_SCK_MASK;
7505 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7506 }
7507 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7508 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7509 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7510 int cmp_len, value_len;
7511 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7512
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7513 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7514 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7515 value_begin = att_beg + t->be->appsession_name_len;
7516 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]7517 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7518 cmp_len = att_end - att_beg;
7519 value_begin = val_beg;
7520 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7521 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7522
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7523 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7524 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7525 /* free a possibly previously allocated memory */
7526 pool_free2(apools.sessid, txn->sessid);
7527
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7528 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7529 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7530 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7531 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7532 return;
7533 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7534 memcpy(txn->sessid, value_begin, value_len);
7535 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7536 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7537 }
7538 /* that's done for this cookie, check the next one on the same
7539 * line when next != hdr_end (only if is_cookie2).
7540 */
7541 }
7542 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7543 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7544 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7545
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7546 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7547 appsess *asession = NULL;
7548 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7549 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7550 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7551 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7552 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7553 Alert("Not enough Memory process_srv():asession:calloc().\n");
7554 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7555 return;
7556 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7557 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7558
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7559 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7560 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7561 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]7562 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7563 return;
7564 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7565 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7566 asession->sessid[t->be->appsession_len] = 0;
7567
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7568 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7569 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7570 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7571 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
Cyril Bonté41689c22010-01-10 00:30:14 +0100[diff] [blame]7572 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7573 return;
7574 }
7575 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7576 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7577
7578 asession->request_count = 0;
7579 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7580 }
7581
7582 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7583 asession->request_count++;
7584 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7585}
7586
7587
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7588/*
7589 * Check if response is cacheable or not. Updates t->flags.
7590 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7591void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7592{
7593 struct http_txn *txn = &t->txn;
7594 char *p1, *p2;
7595
7596 char *cur_ptr, *cur_end, *cur_next;
7597 int cur_idx;
7598
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7599 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7600 return;
7601
7602 /* Iterate through the headers.
7603 * we start with the start line.
7604 */
7605 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7606 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7607
7608 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7609 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7610 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7611
7612 cur_hdr = &txn->hdr_idx.v[cur_idx];
7613 cur_ptr = cur_next;
7614 cur_end = cur_ptr + cur_hdr->len;
7615 cur_next = cur_end + cur_hdr->cr + 1;
7616
7617 /* We have one full header between cur_ptr and cur_end, and the
7618 * next header starts at cur_next. We're only interested in
7619 * "Cookie:" headers.
7620 */
7621
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7622 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7623 if (val) {
7624 if ((cur_end - (cur_ptr + val) >= 8) &&
7625 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7626 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7627 return;
7628 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7629 }
7630
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7631 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7632 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7633 continue;
7634
7635 /* OK, right now we know we have a cache-control header at cur_ptr */
7636
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7637 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7638
7639 if (p1 >= cur_end) /* no more info */
7640 continue;
7641
7642 /* p1 is at the beginning of the value */
7643 p2 = p1;
7644
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7645 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7646 p2++;
7647
7648 /* we have a complete value between p1 and p2 */
7649 if (p2 < cur_end && *p2 == '=') {
7650 /* we have something of the form no-cache="set-cookie" */
7651 if ((cur_end - p1 >= 21) &&
7652 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7653 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7654 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7655 continue;
7656 }
7657
7658 /* OK, so we know that either p2 points to the end of string or to a comma */
7659 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7660 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7661 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7662 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7663 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7664 return;
7665 }
7666
7667 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7668 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7669 continue;
7670 }
7671 }
7672}
7673
7674
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7675/*
7676 * Try to retrieve a known appsession in the URI, then the associated server.
7677 * If the server is found, it's assigned to the session.
7678 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7679void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7680{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7681 char *end_params, *first_param, *cur_param, *next_param;
7682 char separator;
7683 int value_len;
7684
7685 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7686
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7687 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7688 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST && t->txn.meth != HTTP_METH_HEAD)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7689 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7690 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7691
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7692 first_param = NULL;
7693 switch (mode) {
7694 case PR_O2_AS_M_PP:
7695 first_param = memchr(begin, ';', len);
7696 break;
7697 case PR_O2_AS_M_QS:
7698 first_param = memchr(begin, '?', len);
7699 break;
7700 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7701
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7702 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7703 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7704 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7705
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7706 switch (mode) {
7707 case PR_O2_AS_M_PP:
7708 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7709 end_params = (char *) begin + len;
7710 }
7711 separator = ';';
7712 break;
7713 case PR_O2_AS_M_QS:
7714 end_params = (char *) begin + len;
7715 separator = '&';
7716 break;
7717 default:
7718 /* unknown mode, shouldn't happen */
7719 return;
7720 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7721
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7722 cur_param = next_param = end_params;
7723 while (cur_param > first_param) {
7724 cur_param--;
7725 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7726 /* let's see if this is the appsession parameter */
7727 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7728 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7729 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7730 /* Cool... it's the right one */
7731 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7732 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7733 if (value_len > 0) {
7734 manage_client_side_appsession(t, cur_param, value_len);
7735 }
7736 break;
7737 }
7738 next_param = cur_param;
7739 }
7740 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7741#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7742 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7743 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7744#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7745}
7746
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7747/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7748 * In a GET, HEAD or POST request, check if the requested URI matches the stats uri
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7749 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7750 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7751 * It is assumed that the request is either a HEAD, GET, or POST and that the
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7752 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7753 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7754 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7755 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7756int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7757{
7758 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7759 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7760 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7761 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7762
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7763 if (!uri_auth)
7764 return 0;
7765
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7766 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]7767 return 0;
7768
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7769 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7770 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]7771 si->applet.ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7772
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7773 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7774 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7775 return 0;
7776
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7777 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7778 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7779 return 0;
7780
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7781 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7782 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7783 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7784 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7785 break;
7786 }
7787 h++;
7788 }
7789
7790 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7791 h = uri + uri_auth->uri_len;
7792 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7793 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7794 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7795 break;
7796 }
7797 h++;
7798 }
7799 }
7800
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7801 h = uri + uri_auth->uri_len;
7802 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7803 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]7804 si->applet.ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7805 break;
7806 }
7807 h++;
7808 }
7809
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7810 h = uri + uri_auth->uri_len;
7811 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7812 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7813 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7814 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7815 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7816 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7817 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7818 si->applet.ctx.stats.st_code = i;
7819 break;
7820 }
7821 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7822 break;
7823 }
7824 h++;
7825 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7826 return 1;
7827}
7828
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7829/*
7830 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7831 * By default it tries to report the error position as msg->err_pos. However if
7832 * this one is not set, it will then report msg->next, which is the last known
7833 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7834 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7835 */
7836void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7837 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7838 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7839{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7840 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7841 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7842
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7843 es->len = MIN(chn->buf->i, sizeof(es->buf));
7844 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7845 len1 = MIN(len1, es->len);
7846 len2 = es->len - len1; /* remaining data if buffer wraps */
7847
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7848 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7849 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7850 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7851
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7852 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7853 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7854 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7855 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7856
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7857 es->when = date; // user-visible date
7858 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7859 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7860 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7861 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7862 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7863 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7864 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7865 es->s_flags = s->flags;
7866 es->t_flags = s->txn.flags;
7867 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7868 es->b_out = chn->buf->o;
7869 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7870 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7871 es->m_clen = msg->chunk_len;
7872 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7873}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7874
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7875/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7876 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7877 * performed over the whole headers. Otherwise it must contain a valid header
7878 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7879 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7880 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7881 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7882 * -1.
7883 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7884 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7885unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7886 struct hdr_idx *idx, int occ,
7887 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7888{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7889 struct hdr_ctx local_ctx;
7890 char *ptr_hist[MAX_HDR_HISTORY];
7891 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7892 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7893 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7894
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7895 if (!ctx) {
7896 local_ctx.idx = 0;
7897 ctx = &local_ctx;
7898 }
7899
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7900 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7901 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7902 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7903 occ--;
7904 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7905 *vptr = ctx->line + ctx->val;
7906 *vlen = ctx->vlen;
7907 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7908 }
7909 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7910 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7911 }
7912
7913 /* negative occurrence, we scan all the list then walk back */
7914 if (-occ > MAX_HDR_HISTORY)
7915 return 0;
7916
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7917 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7918 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7919 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7920 len_hist[hist_ptr] = ctx->vlen;
7921 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7922 hist_ptr = 0;
7923 found++;
7924 }
7925 if (-occ > found)
7926 return 0;
7927 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7928 * find occurrence -occ, so we have to check [hist_ptr+occ].
7929 */
7930 hist_ptr += occ;
7931 if (hist_ptr >= MAX_HDR_HISTORY)
7932 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7933 *vptr = ptr_hist[hist_ptr];
7934 *vlen = len_hist[hist_ptr];
7935 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7936}
7937
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7938/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7939 * Print a debug line with a header. Always stop at the first CR or LF char,
7940 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7941 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7942 */
7943void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7944{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7945 int max;
7946 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7947 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7948 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7949
7950 for (max = 0; start + max < end; max++)
7951 if (start[max] == '\r' || start[max] == '\n')
7952 break;
7953
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7954 UBOUND(max, trash.size - trash.len - 3);
7955 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7956 trash.str[trash.len++] = '\n';
7957 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7958}
7959
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7960/*
7961 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7962 * the required fields are properly allocated and that we only need to (re)init
7963 * them. This should be used before processing any new request.
7964 */
7965void http_init_txn(struct session *s)
7966{
7967 struct http_txn *txn = &s->txn;
7968 struct proxy *fe = s->fe;
7969
7970 txn->flags = 0;
7971 txn->status = -1;
7972
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7973 global.req_count++;
7974
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7975 txn->cookie_first_date = 0;
7976 txn->cookie_last_date = 0;
7977
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7978 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7979 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7980 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7981 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7982 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7983 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7984 txn->req.chunk_len = 0LL;
7985 txn->req.body_len = 0LL;
7986 txn->rsp.chunk_len = 0LL;
7987 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7988 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7989 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7990 txn->req.chn = s->req;
7991 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7992
7993 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7994
7995 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7996 if (fe->options2 & PR_O2_REQBUG_OK)
7997 txn->req.err_pos = -1; /* let buggy requests pass */
7998
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7999 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8000 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8001
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8002 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8003 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8004
8005 if (txn->hdr_idx.v)
8006 hdr_idx_init(&txn->hdr_idx);
8007}
8008
8009/* to be used at the end of a transaction */
8010void http_end_txn(struct session *s)
8011{
8012 struct http_txn *txn = &s->txn;
8013
8014 /* these ones will have been dynamically allocated */
8015 pool_free2(pool2_requri, txn->uri);
8016 pool_free2(pool2_capture, txn->cli_cookie);
8017 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8018 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8019 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8020
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8021 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8022 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8023 txn->uri = NULL;
8024 txn->srv_cookie = NULL;
8025 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8026
8027 if (txn->req.cap) {
8028 struct cap_hdr *h;
8029 for (h = s->fe->req_cap; h; h = h->next)
8030 pool_free2(h->pool, txn->req.cap[h->index]);
8031 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8032 }
8033
8034 if (txn->rsp.cap) {
8035 struct cap_hdr *h;
8036 for (h = s->fe->rsp_cap; h; h = h->next)
8037 pool_free2(h->pool, txn->rsp.cap[h->index]);
8038 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8039 }
8040
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8041}
8042
8043/* to be used at the end of a transaction to prepare a new one */
8044void http_reset_txn(struct session *s)
8045{
8046 http_end_txn(s);
8047 http_init_txn(s);
8048
8049 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8050 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8051 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8052 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8053 /* re-init store persistence */
8054 s->store_count = 0;
8055
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8056 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8057
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8058 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8059
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8060 /* We must trim any excess data from the response buffer, because we
8061 * may have blocked an invalid response from a server that we don't
8062 * want to accidentely forward once we disable the analysers, nor do
8063 * we want those data to come along with next response. A typical
8064 * example of such data would be from a buggy server responding to
8065 * a HEAD with some data, or sending more than the advertised
8066 * content-length.
8067 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8068 if (unlikely(s->rep->buf->i))
8069 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8070
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8071 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8072 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8073
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8074 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8075 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8076
8077 s->req->rex = TICK_ETERNITY;
8078 s->req->wex = TICK_ETERNITY;
8079 s->req->analyse_exp = TICK_ETERNITY;
8080 s->rep->rex = TICK_ETERNITY;
8081 s->rep->wex = TICK_ETERNITY;
8082 s->rep->analyse_exp = TICK_ETERNITY;
8083}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8084
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8085void free_http_req_rules(struct list *r) {
8086 struct http_req_rule *tr, *pr;
8087
8088 list_for_each_entry_safe(pr, tr, r, list) {
8089 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8090 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8091 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8092
8093 free(pr);
8094 }
8095}
8096
8097struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8098{
8099 struct http_req_rule *rule;
8100 int cur_arg;
8101
8102 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8103 if (!rule) {
8104 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8105 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8106 }
8107
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8108 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8109 rule->action = HTTP_REQ_ACT_ALLOW;
8110 cur_arg = 1;
8111 } else if (!strcmp(args[0], "deny")) {
8112 rule->action = HTTP_REQ_ACT_DENY;
8113 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8114 } else if (!strcmp(args[0], "tarpit")) {
8115 rule->action = HTTP_REQ_ACT_TARPIT;
8116 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8117 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8118 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8119 cur_arg = 1;
8120
8121 while(*args[cur_arg]) {
8122 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8123 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8124 cur_arg+=2;
8125 continue;
8126 } else
8127 break;
8128 }
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8129 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8130 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8131 cur_arg = 1;
8132
8133 if (!*args[cur_arg] || !*args[cur_arg+1] || *args[cur_arg+2]) {
8134 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8135 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8136 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8137 }
8138
8139 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8140 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8141 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame^]8142 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8143 (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]8144 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8145 } else if (strcmp(args[0], "redirect") == 0) {
8146 struct redirect_rule *redir;
8147 char *errmsg;
8148
8149 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg)) == NULL) {
8150 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8151 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8152 goto out_err;
8153 }
8154
8155 /* this redirect rule might already contain a parsed condition which
8156 * we'll pass to the http-request rule.
8157 */
8158 rule->action = HTTP_REQ_ACT_REDIR;
8159 rule->arg.redir = redir;
8160 rule->cond = redir->cond;
8161 redir->cond = NULL;
8162 cur_arg = 2;
8163 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8164 } else {
Baptiste Assmann116eefe2013-01-05 16:02:07 +0100[diff] [blame]8165 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', 'tarpit', 'add-header', 'set-header', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8166 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8167 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8168 }
8169
8170 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8171 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8172 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8173
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8174 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8175 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8176 file, linenum, args[0], errmsg);
8177 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8178 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8179 }
8180 rule->cond = cond;
8181 }
8182 else if (*args[cur_arg]) {
8183 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8184 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8185 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8186 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8187 }
8188
8189 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8190 out_err:
8191 free(rule);
8192 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8193}
8194
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8195/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
8196 * with <err> filled with the error message.
8197 */
8198struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
8199 const char **args, char **errmsg)
8200{
8201 struct redirect_rule *rule;
8202 int cur_arg;
8203 int type = REDIRECT_TYPE_NONE;
8204 int code = 302;
8205 const char *destination = NULL;
8206 const char *cookie = NULL;
8207 int cookie_set = 0;
8208 unsigned int flags = REDIRECT_FLAG_NONE;
8209 struct acl_cond *cond = NULL;
8210
8211 cur_arg = 0;
8212 while (*(args[cur_arg])) {
8213 if (strcmp(args[cur_arg], "location") == 0) {
8214 if (!*args[cur_arg + 1])
8215 goto missing_arg;
8216
8217 type = REDIRECT_TYPE_LOCATION;
8218 cur_arg++;
8219 destination = args[cur_arg];
8220 }
8221 else if (strcmp(args[cur_arg], "prefix") == 0) {
8222 if (!*args[cur_arg + 1])
8223 goto missing_arg;
8224
8225 type = REDIRECT_TYPE_PREFIX;
8226 cur_arg++;
8227 destination = args[cur_arg];
8228 }
8229 else if (strcmp(args[cur_arg], "scheme") == 0) {
8230 if (!*args[cur_arg + 1])
8231 goto missing_arg;
8232
8233 type = REDIRECT_TYPE_SCHEME;
8234 cur_arg++;
8235 destination = args[cur_arg];
8236 }
8237 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8238 if (!*args[cur_arg + 1])
8239 goto missing_arg;
8240
8241 cur_arg++;
8242 cookie = args[cur_arg];
8243 cookie_set = 1;
8244 }
8245 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8246 if (!*args[cur_arg + 1])
8247 goto missing_arg;
8248
8249 cur_arg++;
8250 cookie = args[cur_arg];
8251 cookie_set = 0;
8252 }
8253 else if (strcmp(args[cur_arg], "code") == 0) {
8254 if (!*args[cur_arg + 1])
8255 goto missing_arg;
8256
8257 cur_arg++;
8258 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8259 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8260 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8261 "'%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]8262 args[cur_arg - 1], args[cur_arg]);
8263 return NULL;
8264 }
8265 }
8266 else if (!strcmp(args[cur_arg],"drop-query")) {
8267 flags |= REDIRECT_FLAG_DROP_QS;
8268 }
8269 else if (!strcmp(args[cur_arg],"append-slash")) {
8270 flags |= REDIRECT_FLAG_APPEND_SLASH;
8271 }
8272 else if (strcmp(args[cur_arg], "if") == 0 ||
8273 strcmp(args[cur_arg], "unless") == 0) {
8274 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8275 if (!cond) {
8276 memprintf(errmsg, "error in condition: %s", *errmsg);
8277 return NULL;
8278 }
8279 break;
8280 }
8281 else {
8282 memprintf(errmsg,
8283 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8284 args[cur_arg]);
8285 return NULL;
8286 }
8287 cur_arg++;
8288 }
8289
8290 if (type == REDIRECT_TYPE_NONE) {
8291 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8292 return NULL;
8293 }
8294
8295 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8296 rule->cond = cond;
8297 rule->rdr_str = strdup(destination);
8298 rule->rdr_len = strlen(destination);
8299 if (cookie) {
8300 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8301 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8302 */
8303 rule->cookie_len = strlen(cookie);
8304 if (cookie_set) {
8305 rule->cookie_str = malloc(rule->cookie_len + 10);
8306 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8307 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8308 rule->cookie_len += 9;
8309 } else {
8310 rule->cookie_str = malloc(rule->cookie_len + 21);
8311 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8312 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8313 rule->cookie_len += 20;
8314 }
8315 }
8316 rule->type = type;
8317 rule->code = code;
8318 rule->flags = flags;
8319 LIST_INIT(&rule->list);
8320 return rule;
8321
8322 missing_arg:
8323 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8324 return NULL;
8325}
8326
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8327/************************************************************************/
8328/* The code below is dedicated to ACL parsing and matching */
8329/************************************************************************/
8330
8331
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8332/* This function ensures that the prerequisites for an L7 fetch are ready,
8333 * which means that a request or response is ready. If some data is missing,
8334 * 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]8335 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8336 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8337 *
8338 * The function returns :
8339 * 0 if some data is missing or if the requested data cannot be fetched
8340 * -1 if it is certain that we'll never have any HTTP message there
8341 * 1 if an HTTP message is ready
8342 */
8343static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8344acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8345 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8346{
8347 struct http_txn *txn = l7;
8348 struct http_msg *msg = &txn->req;
8349
8350 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8351 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8352 */
8353
8354 if (unlikely(!s || !txn))
8355 return 0;
8356
8357 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8358 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8359
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8360 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8361 if (unlikely(!s->req))
8362 return 0;
8363
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8364 /* If the buffer does not leave enough free space at the end,
8365 * we must first realign it.
8366 */
8367 if (s->req->buf->p > s->req->buf->data &&
8368 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8369 buffer_slow_realign(s->req->buf);
8370
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8371 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8372 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8373 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8374 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8375 return -1;
8376 }
8377
8378 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8379 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8380 http_msg_analyzer(msg, &txn->hdr_idx);
8381
8382 /* Still no valid request ? */
8383 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8384 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8385 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8386 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8387 return -1;
8388 }
8389 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8390 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8391 return 0;
8392 }
8393
8394 /* OK we just got a valid HTTP request. We have some minor
8395 * preparation to perform so that further checks can rely
8396 * on HTTP tests.
8397 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8398
8399 /* If the request was parsed but was too large, we must absolutely
8400 * return an error so that it is not processed. At the moment this
8401 * cannot happen, but if the parsers are to change in the future,
8402 * we want this check to be maintained.
8403 */
8404 if (unlikely(s->req->buf->i + s->req->buf->p >
8405 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8406 msg->msg_state = HTTP_MSG_ERROR;
8407 return 1;
8408 }
8409
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8410 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8411 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8412 s->flags |= SN_REDIRECTABLE;
8413
8414 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8415 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8416 return -1;
8417 }
8418 }
8419
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8420 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8421 return 0; /* data might have moved and indexes changed */
8422
8423 /* otherwise everything's ready for the request */
8424 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8425 else {
8426 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8427 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8428 return 0;
8429 }
8430
8431 /* everything's OK */
8432 return 1;
8433}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8434
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8435#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8436 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]8437
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8438#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8439 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]8440
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8441
8442/* 1. Check on METHOD
8443 * We use the pre-parsed method if it is known, and store its number as an
8444 * integer. If it is unknown, we use the pointer and the length.
8445 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8446static 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]8447{
8448 int len, meth;
8449
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8450 len = strlen(*text);
8451 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8452
8453 pattern->val.i = meth;
8454 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8455 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8456 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8457 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8458 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8459 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8460 pattern->len = len;
8461 }
8462 return 1;
8463}
8464
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8465/* This function fetches the method of current HTTP request and stores
8466 * it in the global pattern struct as a chunk. There are two possibilities :
8467 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8468 * in <len> and <ptr> is NULL ;
8469 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8470 * <len> to its length.
8471 * This is intended to be used with acl_match_meth() only.
8472 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8473static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8474acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8475 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8476{
8477 int meth;
8478 struct http_txn *txn = l7;
8479
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8480 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8481
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8482 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8483 smp->type = SMP_T_UINT;
8484 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8485 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8486 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8487 /* ensure the indexes are not affected */
8488 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8489 smp->type = SMP_T_CSTR;
8490 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8491 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8492 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8493 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8494 return 1;
8495}
8496
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8497/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8498static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8499{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8500 int icase;
8501
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8502
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8503 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8504 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8505 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8506 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8507 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8508 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8509
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8510 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8511 if (pattern->val.i != HTTP_METH_OTHER)
8512 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8513
8514 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8515 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8516 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8517
8518 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8519 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8520 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8521 return ACL_PAT_FAIL;
8522 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8523}
8524
8525/* 2. Check on Request/Status Version
8526 * We simply compare strings here.
8527 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8528static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8529{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8530 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8531 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8532 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8533 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8534 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8535 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8536 return 1;
8537}
8538
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8539static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8540acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8541 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8542{
8543 struct http_txn *txn = l7;
8544 char *ptr;
8545 int len;
8546
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8547 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8548
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8549 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8550 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8551
8552 while ((len-- > 0) && (*ptr++ != '/'));
8553 if (len <= 0)
8554 return 0;
8555
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8556 smp->type = SMP_T_CSTR;
8557 smp->data.str.str = ptr;
8558 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8559
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8560 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8561 return 1;
8562}
8563
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8564static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8565acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8566 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8567{
8568 struct http_txn *txn = l7;
8569 char *ptr;
8570 int len;
8571
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8572 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8573
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8574 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8575 return 0;
8576
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8577 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8578 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8579
8580 while ((len-- > 0) && (*ptr++ != '/'));
8581 if (len <= 0)
8582 return 0;
8583
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8584 smp->type = SMP_T_CSTR;
8585 smp->data.str.str = ptr;
8586 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8587
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8588 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8589 return 1;
8590}
8591
8592/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8593static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8594acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8595 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8596{
8597 struct http_txn *txn = l7;
8598 char *ptr;
8599 int len;
8600
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8601 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8602
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8603 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8604 return 0;
8605
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8606 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8607 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8608
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8609 smp->type = SMP_T_UINT;
8610 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8611 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8612 return 1;
8613}
8614
8615/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8616static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8617smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8618 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8619{
8620 struct http_txn *txn = l7;
8621
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8622 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8623
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8624 smp->type = SMP_T_CSTR;
8625 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8626 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8627 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8628 return 1;
8629}
8630
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8631static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8632smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8633 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8634{
8635 struct http_txn *txn = l7;
8636
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8637 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8638
8639 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8640 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8641 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8642 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8643 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8644 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8645
8646 /*
8647 * If we are parsing url in frontend space, we prepare backend stage
8648 * to not parse again the same url ! optimization lazyness...
8649 */
8650 if (px->options & PR_O_HTTP_PROXY)
8651 l4->flags |= SN_ADDR_SET;
8652
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8653 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8654 return 1;
8655}
8656
8657static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8658smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8659 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8660{
8661 struct http_txn *txn = l7;
8662
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8663 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8664
8665 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8666 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]8667 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8668 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]8669
8670 if (px->options & PR_O_HTTP_PROXY)
8671 l4->flags |= SN_ADDR_SET;
8672
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8673 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8674 return 1;
8675}
8676
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8677/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8678 * Accepts an optional argument of type string containing the header field name,
8679 * and an optional argument of type signed or unsigned integer to request an
8680 * explicit occurrence of the header. Note that in the event of a missing name,
8681 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8682 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8683static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8684smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8685 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8686{
8687 struct http_txn *txn = l7;
8688 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]8689 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8690 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]8691 int occ = 0;
8692 const char *name_str = NULL;
8693 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8694
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]8695 if (!ctx) {
8696 /* first call */
8697 ctx = &static_hdr_ctx;
8698 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]8699 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]8700 }
8701
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8702 if (args) {
8703 if (args[0].type != ARGT_STR)
8704 return 0;
8705 name_str = args[0].data.str.str;
8706 name_len = args[0].data.str.len;
8707
8708 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8709 occ = args[1].data.uint;
8710 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8711
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8712 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8713
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8714 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8715 /* search for header from the beginning */
8716 ctx->idx = 0;
8717
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8718 if (!occ && !(opt & SMP_OPT_ITERATE))
8719 /* no explicit occurrence and single fetch => last header by default */
8720 occ = -1;
8721
8722 if (!occ)
8723 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8724 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8725
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8726 smp->type = SMP_T_CSTR;
8727 smp->flags |= SMP_F_VOL_HDR;
8728 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]8729 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8730
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8731 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8732 return 0;
8733}
8734
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8735/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8736 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8737 */
8738static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8739smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8740 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8741{
8742 struct http_txn *txn = l7;
8743 struct hdr_idx *idx = &txn->hdr_idx;
8744 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8745 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]8746 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8747
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8748 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8749 return 0;
8750
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8751 CHECK_HTTP_MESSAGE_FIRST();
8752
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8753 ctx.idx = 0;
8754 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8755 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]8756 cnt++;
8757
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8758 smp->type = SMP_T_UINT;
8759 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8760 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8761 return 1;
8762}
8763
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8764/* Fetch an HTTP header's integer value. The integer value is returned. It
8765 * takes a mandatory argument of type string and an optional one of type int
8766 * to designate a specific occurrence. It returns an unsigned integer, which
8767 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8768 */
8769static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8770smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8771 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8772{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8773 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8774
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8775 if (ret > 0) {
8776 smp->type = SMP_T_UINT;
8777 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8778 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8779
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8780 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8781}
8782
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8783/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8784 * and an optional one of type int to designate a specific occurrence.
8785 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8786 */
8787static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8788smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8789 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8790{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8791 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8792
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8793 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8794 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8795 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8796 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8797 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8798 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8799 if (smp->data.str.len < temp->size - 1) {
8800 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8801 temp->str[smp->data.str.len] = '\0';
8802 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8803 smp->type = SMP_T_IPV6;
8804 break;
8805 }
8806 }
8807 }
8808
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8809 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8810 if (!(smp->flags & SMP_F_NOT_LAST))
8811 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8812 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8813 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8814}
8815
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8816/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8817 * the first '/' after the possible hostname, and ends before the possible '?'.
8818 */
8819static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8820smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8821 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8822{
8823 struct http_txn *txn = l7;
8824 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8825
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8826 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8827
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8828 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]8829 ptr = http_get_path(txn);
8830 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8831 return 0;
8832
8833 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8834 smp->type = SMP_T_CSTR;
8835 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8836
8837 while (ptr < end && *ptr != '?')
8838 ptr++;
8839
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8840 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8841 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8842 return 1;
8843}
8844
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8845/* This produces a concatenation of the first occurrence of the Host header
8846 * followed by the path component if it begins with a slash ('/'). This means
8847 * that '*' will not be added, resulting in exactly the first Host entry.
8848 * If no Host header is found, then the path is returned as-is. The returned
8849 * value is stored in the trash so it does not need to be marked constant.
8850 */
8851static int
8852smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8853 const struct arg *args, struct sample *smp)
8854{
8855 struct http_txn *txn = l7;
8856 char *ptr, *end, *beg;
8857 struct hdr_ctx ctx;
8858
8859 CHECK_HTTP_MESSAGE_FIRST();
8860
8861 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8862 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]8863 !ctx.vlen)
8864 return smp_fetch_path(px, l4, l7, opt, args, smp);
8865
8866 /* 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]8867 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8868 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8869 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8870 smp->data.str.len = ctx.vlen;
8871
8872 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8873 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]8874 beg = http_get_path(txn);
8875 if (!beg)
8876 beg = end;
8877
8878 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8879
8880 if (beg < ptr && *beg == '/') {
8881 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8882 smp->data.str.len += ptr - beg;
8883 }
8884
8885 smp->flags = SMP_F_VOL_1ST;
8886 return 1;
8887}
8888
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]8889/* This produces a 32-bit hash of the concatenation of the first occurrence of
8890 * the Host header followed by the path component if it begins with a slash ('/').
8891 * This means that '*' will not be added, resulting in exactly the first Host
8892 * entry. If no Host header is found, then the path is used. The resulting value
8893 * is hashed using the url hash followed by a full avalanche hash and provides a
8894 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
8895 * high-traffic sites without having to store whole paths.
8896 */
8897static int
8898smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8899 const struct arg *args, struct sample *smp)
8900{
8901 struct http_txn *txn = l7;
8902 struct hdr_ctx ctx;
8903 unsigned int hash = 0;
8904 char *ptr, *beg, *end;
8905 int len;
8906
8907 CHECK_HTTP_MESSAGE_FIRST();
8908
8909 ctx.idx = 0;
8910 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
8911 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8912 ptr = ctx.line + ctx.val;
8913 len = ctx.vlen;
8914 while (len--)
8915 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
8916 }
8917
8918 /* now retrieve the path */
8919 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
8920 beg = http_get_path(txn);
8921 if (!beg)
8922 beg = end;
8923
8924 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8925
8926 if (beg < ptr && *beg == '/') {
8927 while (beg < ptr)
8928 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
8929 }
8930 hash = full_hash(hash);
8931
8932 smp->type = SMP_T_UINT;
8933 smp->data.uint = hash;
8934 smp->flags = SMP_F_VOL_1ST;
8935 return 1;
8936}
8937
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8938/* This concatenates the source address with the 32-bit hash of the Host and
8939 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
8940 * per-url counters. The result is a binary block from 8 to 20 bytes depending
8941 * on the source address length. The URL hash is stored before the address so
8942 * that in environments where IPv6 is insignificant, truncating the output to
8943 * 8 bytes would still work.
8944 */
8945static int
8946smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8947 const struct arg *args, struct sample *smp)
8948{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8949 struct chunk *temp;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8950
8951 if (!smp_fetch_base32(px, l4, l7, opt, args, smp))
8952 return 0;
8953
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8954 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8955 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
8956 temp->len += sizeof(smp->data.uint);
8957
8958 switch (l4->si[0].conn->addr.from.ss_family) {
8959 case AF_INET:
8960 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
8961 temp->len += 4;
8962 break;
8963 case AF_INET6:
8964 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
8965 temp->len += 16;
8966 break;
8967 default:
8968 return 0;
8969 }
8970
8971 smp->data.str = *temp;
8972 smp->type = SMP_T_BIN;
8973 return 1;
8974}
8975
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8976static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8977acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8978 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8979{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8980 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8981 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8982 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8983
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8984 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8985
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8986 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8987 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8988 return 1;
8989}
8990
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8991/* return a valid test if the current request is the first one on the connection */
8992static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8993acl_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]8994 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8995{
8996 if (!s)
8997 return 0;
8998
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8999 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9000 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9001 return 1;
9002}
9003
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9004/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9005static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9006acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9007 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9008{
9009
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9010 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9011 return 0;
9012
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9013 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9014
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9015 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9016 return 0;
9017
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9018 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9019 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]9020 return 1;
9021}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9022
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9023/* Accepts exactly 1 argument of type userlist */
9024static int
9025acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9026 const struct arg *args, struct sample *smp)
9027{
9028
9029 if (!args || args->type != ARGT_USR)
9030 return 0;
9031
9032 CHECK_HTTP_MESSAGE_FIRST();
9033
9034 if (!get_http_auth(l4))
9035 return 0;
9036
9037 /* acl_match_auth() will need several information at once */
9038 smp->ctx.a[0] = args->data.usr; /* user list */
9039 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9040 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9041
9042 /* if the user does not belong to the userlist or has a wrong password,
9043 * report that it unconditionally does not match. Otherwise we return
9044 * a non-zero integer which will be ignored anyway since all the params
9045 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
9046 */
9047 smp->type = SMP_T_BOOL;
9048 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9049 if (smp->data.uint)
9050 smp->type = SMP_T_UINT;
9051
9052 return 1;
9053}
9054
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9055/* Try to find the next occurrence of a cookie name in a cookie header value.
9056 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9057 * the cookie value is returned into *value and *value_l, and the function
9058 * returns a pointer to the next pointer to search from if the value was found.
9059 * Otherwise if the cookie was not found, NULL is returned and neither value
9060 * nor value_l are touched. The input <hdr> string should first point to the
9061 * header's value, and the <hdr_end> pointer must point to the first character
9062 * not part of the value. <list> must be non-zero if value may represent a list
9063 * of values (cookie headers). This makes it faster to abort parsing when no
9064 * list is expected.
9065 */
9066static char *
9067extract_cookie_value(char *hdr, const char *hdr_end,
9068 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9069 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9070{
9071 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9072 char *next;
9073
9074 /* we search at least a cookie name followed by an equal, and more
9075 * generally something like this :
9076 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9077 */
9078 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9079 /* Iterate through all cookies on this line */
9080
9081 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9082 att_beg++;
9083
9084 /* find att_end : this is the first character after the last non
9085 * space before the equal. It may be equal to hdr_end.
9086 */
9087 equal = att_end = att_beg;
9088
9089 while (equal < hdr_end) {
9090 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9091 break;
9092 if (http_is_spht[(unsigned char)*equal++])
9093 continue;
9094 att_end = equal;
9095 }
9096
9097 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9098 * is between <att_beg> and <equal>, both may be identical.
9099 */
9100
9101 /* look for end of cookie if there is an equal sign */
9102 if (equal < hdr_end && *equal == '=') {
9103 /* look for the beginning of the value */
9104 val_beg = equal + 1;
9105 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9106 val_beg++;
9107
9108 /* find the end of the value, respecting quotes */
9109 next = find_cookie_value_end(val_beg, hdr_end);
9110
9111 /* make val_end point to the first white space or delimitor after the value */
9112 val_end = next;
9113 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9114 val_end--;
9115 } else {
9116 val_beg = val_end = next = equal;
9117 }
9118
9119 /* We have nothing to do with attributes beginning with '$'. However,
9120 * they will automatically be removed if a header before them is removed,
9121 * since they're supposed to be linked together.
9122 */
9123 if (*att_beg == '$')
9124 continue;
9125
9126 /* Ignore cookies with no equal sign */
9127 if (equal == next)
9128 continue;
9129
9130 /* Now we have the cookie name between att_beg and att_end, and
9131 * its value between val_beg and val_end.
9132 */
9133
9134 if (att_end - att_beg == cookie_name_l &&
9135 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9136 /* let's return this value and indicate where to go on from */
9137 *value = val_beg;
9138 *value_l = val_end - val_beg;
9139 return next + 1;
9140 }
9141
9142 /* Set-Cookie headers only have the name in the first attr=value part */
9143 if (!list)
9144 break;
9145 }
9146
9147 return NULL;
9148}
9149
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9150/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9151 * 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]9152 * 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]9153 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9154 * 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]9155 * Accepts exactly 1 argument of type string. If the input options indicate
9156 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9157 */
9158static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9159smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9160 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9161{
9162 struct http_txn *txn = l7;
9163 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9164 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9165 const struct http_msg *msg;
9166 const char *hdr_name;
9167 int hdr_name_len;
9168 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9169 int occ = 0;
9170 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9171
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9172 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9173 return 0;
9174
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9175 if (!ctx) {
9176 /* first call */
9177 ctx = &static_hdr_ctx;
9178 ctx->idx = 0;
9179 smp->ctx.a[2] = ctx;
9180 }
9181
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9182 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9183
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9184 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9185 msg = &txn->req;
9186 hdr_name = "Cookie";
9187 hdr_name_len = 6;
9188 } else {
9189 msg = &txn->rsp;
9190 hdr_name = "Set-Cookie";
9191 hdr_name_len = 10;
9192 }
9193
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9194 if (!occ && !(opt & SMP_OPT_ITERATE))
9195 /* no explicit occurrence and single fetch => last cookie by default */
9196 occ = -1;
9197
9198 /* OK so basically here, either we want only one value and it's the
9199 * last one, or we want to iterate over all of them and we fetch the
9200 * next one.
9201 */
9202
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9203 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9204 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9205 /* search for the header from the beginning, we must first initialize
9206 * the search parameters.
9207 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9208 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9209 ctx->idx = 0;
9210 }
9211
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9212 smp->flags |= SMP_F_VOL_HDR;
9213
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9214 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9215 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9216 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9217 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9218 goto out;
9219
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9220 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9221 continue;
9222
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9223 smp->ctx.a[0] = ctx->line + ctx->val;
9224 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9225 }
9226
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9227 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9228 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]9229 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9230 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9231 &smp->data.str.str,
9232 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9233 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9234 found = 1;
9235 if (occ >= 0) {
9236 /* one value was returned into smp->data.str.{str,len} */
9237 smp->flags |= SMP_F_NOT_LAST;
9238 return 1;
9239 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9240 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9241 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9242 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9243 /* all cookie headers and values were scanned. If we're looking for the
9244 * last occurrence, we may return it now.
9245 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9246 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9247 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9248 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9249}
9250
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9251/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9252 * 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]9253 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9254 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9255 */
9256static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9257acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9258 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9259{
9260 struct http_txn *txn = l7;
9261 struct hdr_idx *idx = &txn->hdr_idx;
9262 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9263 const struct http_msg *msg;
9264 const char *hdr_name;
9265 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9266 int cnt;
9267 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9268 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9269
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9270 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9271 return 0;
9272
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9273 CHECK_HTTP_MESSAGE_FIRST();
9274
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9275 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9276 msg = &txn->req;
9277 hdr_name = "Cookie";
9278 hdr_name_len = 6;
9279 } else {
9280 msg = &txn->rsp;
9281 hdr_name = "Set-Cookie";
9282 hdr_name_len = 10;
9283 }
9284
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9285 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9286 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9287 ctx.idx = 0;
9288 cnt = 0;
9289
9290 while (1) {
9291 /* Note: val_beg == NULL every time we need to fetch a new header */
9292 if (!val_beg) {
9293 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9294 break;
9295
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9296 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9297 continue;
9298
9299 val_beg = ctx.line + ctx.val;
9300 val_end = val_beg + ctx.vlen;
9301 }
9302
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9303 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9304 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9305 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9306 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9307 &smp->data.str.str,
9308 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9309 cnt++;
9310 }
9311 }
9312
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9313 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9314 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9315 return 1;
9316}
9317
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9318/* Fetch an cookie's integer value. The integer value is returned. It
9319 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9320 */
9321static int
9322smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9323 const struct arg *args, struct sample *smp)
9324{
9325 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
9326
9327 if (ret > 0) {
9328 smp->type = SMP_T_UINT;
9329 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9330 }
9331
9332 return ret;
9333}
9334
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9335/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9336/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9337/************************************************************************/
9338
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9339/*
9340 * Given a path string and its length, find the position of beginning of the
9341 * query string. Returns NULL if no query string is found in the path.
9342 *
9343 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9344 *
9345 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9346 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9347static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9348{
9349 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9350
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9351 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9352 return p ? p + 1 : NULL;
9353}
9354
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9355static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9356{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9357 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9358}
9359
9360/*
9361 * Given a url parameter, find the starting position of the first occurence,
9362 * or NULL if the parameter is not found.
9363 *
9364 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9365 * the function will return query_string+8.
9366 */
9367static char*
9368find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9369 char* url_param_name, size_t url_param_name_l,
9370 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9371{
9372 char *pos, *last;
9373
9374 pos = query_string;
9375 last = query_string + query_string_l - url_param_name_l - 1;
9376
9377 while (pos <= last) {
9378 if (pos[url_param_name_l] == '=') {
9379 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9380 return pos;
9381 pos += url_param_name_l + 1;
9382 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9383 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9384 pos++;
9385 pos++;
9386 }
9387 return NULL;
9388}
9389
9390/*
9391 * Given a url parameter name, returns its value and size into *value and
9392 * *value_l respectively, and returns non-zero. If the parameter is not found,
9393 * zero is returned and value/value_l are not touched.
9394 */
9395static int
9396find_url_param_value(char* path, size_t path_l,
9397 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9398 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9399{
9400 char *query_string, *qs_end;
9401 char *arg_start;
9402 char *value_start, *value_end;
9403
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9404 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9405 if (!query_string)
9406 return 0;
9407
9408 qs_end = path + path_l;
9409 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9410 url_param_name, url_param_name_l,
9411 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9412 if (!arg_start)
9413 return 0;
9414
9415 value_start = arg_start + url_param_name_l + 1;
9416 value_end = value_start;
9417
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9418 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9419 value_end++;
9420
9421 *value = value_start;
9422 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9423 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9424}
9425
9426static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9427smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9428 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9429{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9430 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9431 struct http_txn *txn = l7;
9432 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9433
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9434 if (!args || args[0].type != ARGT_STR ||
9435 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9436 return 0;
9437
9438 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9439
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9440 if (args[1].type)
9441 delim = *args[1].data.str.str;
9442
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9443 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]9444 args->data.str.str, args->data.str.len,
9445 &smp->data.str.str, &smp->data.str.len,
9446 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9447 return 0;
9448
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9449 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9450 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9451 return 1;
9452}
9453
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9454/* Return the signed integer value for the specified url parameter (see url_param
9455 * above).
9456 */
9457static int
9458smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9459 const struct arg *args, struct sample *smp)
9460{
9461 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
9462
9463 if (ret > 0) {
9464 smp->type = SMP_T_UINT;
9465 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9466 }
9467
9468 return ret;
9469}
9470
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9471/* This function is used to validate the arguments passed to any "hdr" fetch
9472 * keyword. These keywords support an optional positive or negative occurrence
9473 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9474 * is assumed that the types are already the correct ones. Returns 0 on error,
9475 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9476 * error message in case of error, that the caller is responsible for freeing.
9477 * The initial location must either be freeable or NULL.
9478 */
9479static int val_hdr(struct arg *arg, char **err_msg)
9480{
9481 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9482 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9483 return 0;
9484 }
9485 return 1;
9486}
9487
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9488/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9489/* All supported ACL keywords must be declared here. */
9490/************************************************************************/
9491
9492/* Note: must not be declared <const> as its list will be overwritten.
9493 * Please take care of keeping this list alphabetically sorted.
9494 */
9495static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9496 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9497 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9498 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9499 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9500 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9501 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9502 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9503 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
9504
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9505 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9506 { "cook_beg", acl_parse_str, smp_fetch_cookie, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9507 { "cook_cnt", acl_parse_int, acl_fetch_cookie_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9508 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9509 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9510 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9511 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9512 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9513 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9514 { "cook_val", acl_parse_int, smp_fetch_cookie_val, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9515
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9516 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9517 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9518 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9519 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9520 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9521 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9522 { "hdr_ip", acl_parse_ip, smp_fetch_hdr_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9523 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9524 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9525 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9526 { "hdr_val", acl_parse_int, smp_fetch_hdr_val, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9527
9528 { "http_auth", acl_parse_nothing, acl_fetch_http_auth, acl_match_nothing, ACL_USE_L7REQ_VOLATILE, ARG1(0,USR) },
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9529 { "http_auth_group", acl_parse_strcat, acl_fetch_http_auth_grp, acl_match_auth, ACL_USE_L7REQ_VOLATILE, ARG1(0,USR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9530 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9531
9532 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
9533
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9534 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9535 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9536 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9537 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9538 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9539 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9540 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9541 { "path_sub", acl_parse_str, smp_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9542
9543 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9544 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE, 0 },
9545 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE, 0 },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9546
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9547 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9548 { "scook_beg", acl_parse_str, smp_fetch_cookie, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9549 { "scook_cnt", acl_parse_int, acl_fetch_cookie_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9550 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9551 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9552 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9553 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9554 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9555 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9556 { "scook_val", acl_parse_int, smp_fetch_cookie_val, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9557
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9558 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9559 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9560 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9561 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9562 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9563 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9564 { "shdr_ip", acl_parse_ip, smp_fetch_hdr_ip, acl_match_ip, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9565 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9566 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9567 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9568 { "shdr_val", acl_parse_int, smp_fetch_hdr_val, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9569
9570 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9571
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9572 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9573 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9574 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9575 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9576 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9577 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9578 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9579 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9580 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9581 { "url_sub", acl_parse_str, smp_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9582
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9583 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9584 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9585 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9586 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9587 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
Willy Tarreaue0db1e82013-01-04 16:31:47 +0100[diff] [blame]9588 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9589 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9590 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9591 { "urlp_sub", acl_parse_str, smp_fetch_url_param, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9592 { "urlp_val", acl_parse_int, smp_fetch_url_param_val, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9593
9594 { NULL, NULL, NULL, NULL },
9595}};
9596
9597/************************************************************************/
9598/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9599/************************************************************************/
9600/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9601static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau80aca902013-01-07 15:42:20 +0100[diff] [blame]9602 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
9603 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
9604 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
9605 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
9606 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
9607 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
9608 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
9609 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
9610 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
9611 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
9612 { "set-cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
Willy Tarreau9fcb9842012-04-20 14:45:49 +0200[diff] [blame]9613 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9614}};
9615
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9616
9617__attribute__((constructor))
9618static void __http_protocol_init(void)
9619{
9620 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9621 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9622}
9623
9624
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9625/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9626 * Local variables:
9627 * c-indent-level: 8
9628 * c-basic-offset: 8
9629 * End:
9630 */