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git01.mediatek.com / haproxy / d72822442d1f394ea85d9d22cf591e586e0e4b37 / . / src / proto_http.c
blob: c0a66879fc165bbd5f4547a89c6770c5a61798b8 [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 Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/compat.h>
31#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]32#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]33#include <common/memory.h>
34#include <common/mini-clist.h>
35#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]36#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]37#include <common/time.h>
38#include <common/uri_auth.h>
39#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
41#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]42#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]44#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]45#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]46#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]47#include <proto/backend.h>
48#include <proto/buffers.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]49#include <proto/checks.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]50#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]51#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]52#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]54#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]55#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]56#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]57#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]59#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]60#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/session.h>
Willy Tarreauc63190d2012-05-11 14:23:52 +0200[diff] [blame]62#include <proto/sock_raw.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]63#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/task.h>
65
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]66const char HTTP_100[] =
67 "HTTP/1.1 100 Continue\r\n\r\n";
68
69const struct chunk http_100_chunk = {
70 .str = (char *)&HTTP_100,
71 .len = sizeof(HTTP_100)-1
72};
73
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]74/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]75const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]76 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]77 "Cache-Control: no-cache\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
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]94/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
95const char *HTTP_401_fmt =
96 "HTTP/1.0 401 Unauthorized\r\n"
97 "Cache-Control: no-cache\r\n"
98 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]99 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]100 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
101 "\r\n"
102 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
103
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]104const char *HTTP_407_fmt =
105 "HTTP/1.0 407 Unauthorized\r\n"
106 "Cache-Control: no-cache\r\n"
107 "Connection: close\r\n"
108 "Content-Type: text/html\r\n"
109 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
110 "\r\n"
111 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
112
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]113
114const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]115 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]116 [HTTP_ERR_400] = 400,
117 [HTTP_ERR_403] = 403,
118 [HTTP_ERR_408] = 408,
119 [HTTP_ERR_500] = 500,
120 [HTTP_ERR_502] = 502,
121 [HTTP_ERR_503] = 503,
122 [HTTP_ERR_504] = 504,
123};
124
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]125static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]126 [HTTP_ERR_200] =
127 "HTTP/1.0 200 OK\r\n"
128 "Cache-Control: no-cache\r\n"
129 "Connection: close\r\n"
130 "Content-Type: text/html\r\n"
131 "\r\n"
132 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
133
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]134 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]135 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]136 "Cache-Control: no-cache\r\n"
137 "Connection: close\r\n"
138 "Content-Type: text/html\r\n"
139 "\r\n"
140 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
141
142 [HTTP_ERR_403] =
143 "HTTP/1.0 403 Forbidden\r\n"
144 "Cache-Control: no-cache\r\n"
145 "Connection: close\r\n"
146 "Content-Type: text/html\r\n"
147 "\r\n"
148 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
149
150 [HTTP_ERR_408] =
151 "HTTP/1.0 408 Request Time-out\r\n"
152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
157
158 [HTTP_ERR_500] =
159 "HTTP/1.0 500 Server Error\r\n"
160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
165
166 [HTTP_ERR_502] =
167 "HTTP/1.0 502 Bad Gateway\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
173
174 [HTTP_ERR_503] =
175 "HTTP/1.0 503 Service Unavailable\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
181
182 [HTTP_ERR_504] =
183 "HTTP/1.0 504 Gateway Time-out\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
189
190};
191
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]192/* status codes available for the stats admin page (strictly 4 chars length) */
193const char *stat_status_codes[STAT_STATUS_SIZE] = {
194 [STAT_STATUS_DENY] = "DENY",
195 [STAT_STATUS_DONE] = "DONE",
196 [STAT_STATUS_ERRP] = "ERRP",
197 [STAT_STATUS_EXCD] = "EXCD",
198 [STAT_STATUS_NONE] = "NONE",
199 [STAT_STATUS_PART] = "PART",
200 [STAT_STATUS_UNKN] = "UNKN",
201};
202
203
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]204/* We must put the messages here since GCC cannot initialize consts depending
205 * on strlen().
206 */
207struct chunk http_err_chunks[HTTP_ERR_SIZE];
208
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]209#define FD_SETS_ARE_BITFIELDS
210#ifdef FD_SETS_ARE_BITFIELDS
211/*
212 * This map is used with all the FD_* macros to check whether a particular bit
213 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
214 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
215 * byte should be encoded. Be careful to always pass bytes from 0 to 255
216 * exclusively to the macros.
217 */
218fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
219fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220
221#else
222#error "Check if your OS uses bitfields for fd_sets"
223#endif
224
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]225void init_proto_http()
226{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]227 int i;
228 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]229 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]230
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]231 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
232 if (!http_err_msgs[msg]) {
233 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
234 abort();
235 }
236
237 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
238 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
239 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]240
241 /* initialize the log header encoding map : '{|}"#' should be encoded with
242 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
243 * URL encoding only requires '"', '#' to be encoded as well as non-
244 * printable characters above.
245 */
246 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
247 memset(url_encode_map, 0, sizeof(url_encode_map));
248 for (i = 0; i < 32; i++) {
249 FD_SET(i, hdr_encode_map);
250 FD_SET(i, url_encode_map);
251 }
252 for (i = 127; i < 256; i++) {
253 FD_SET(i, hdr_encode_map);
254 FD_SET(i, url_encode_map);
255 }
256
257 tmp = "\"#{|}";
258 while (*tmp) {
259 FD_SET(*tmp, hdr_encode_map);
260 tmp++;
261 }
262
263 tmp = "\"#";
264 while (*tmp) {
265 FD_SET(*tmp, url_encode_map);
266 tmp++;
267 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]268
269 /* memory allocations */
270 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]271 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]272 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]273}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]274
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]275/*
276 * We have 26 list of methods (1 per first letter), each of which can have
277 * up to 3 entries (2 valid, 1 null).
278 */
279struct http_method_desc {
280 http_meth_t meth;
281 int len;
282 const char text[8];
283};
284
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]285const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]286 ['C' - 'A'] = {
287 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
288 },
289 ['D' - 'A'] = {
290 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
291 },
292 ['G' - 'A'] = {
293 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
294 },
295 ['H' - 'A'] = {
296 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
297 },
298 ['P' - 'A'] = {
299 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
300 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
301 },
302 ['T' - 'A'] = {
303 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
304 },
305 /* rest is empty like this :
306 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
307 */
308};
309
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]310/* 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]311 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]312 * RFC2616 for those chars.
313 */
314
315const char http_is_spht[256] = {
316 [' '] = 1, ['\t'] = 1,
317};
318
319const char http_is_crlf[256] = {
320 ['\r'] = 1, ['\n'] = 1,
321};
322
323const char http_is_lws[256] = {
324 [' '] = 1, ['\t'] = 1,
325 ['\r'] = 1, ['\n'] = 1,
326};
327
328const char http_is_sep[256] = {
329 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
330 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
331 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
332 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
333 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
334};
335
336const char http_is_ctl[256] = {
337 [0 ... 31] = 1,
338 [127] = 1,
339};
340
341/*
342 * A token is any ASCII char that is neither a separator nor a CTL char.
343 * Do not overwrite values in assignment since gcc-2.95 will not handle
344 * them correctly. Instead, define every non-CTL char's status.
345 */
346const char http_is_token[256] = {
347 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
348 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
349 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
350 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
351 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
352 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
353 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
354 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
355 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
356 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
357 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
358 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
359 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
360 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
361 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
362 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
363 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
364 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
365 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
366 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
367 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
368 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
369 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
370 ['|'] = 1, ['}'] = 0, ['~'] = 1,
371};
372
373
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]374/*
375 * An http ver_token is any ASCII which can be found in an HTTP version,
376 * which includes 'H', 'T', 'P', '/', '.' and any digit.
377 */
378const char http_is_ver_token[256] = {
379 ['.'] = 1, ['/'] = 1,
380 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
381 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
382 ['H'] = 1, ['P'] = 1, ['T'] = 1,
383};
384
385
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]386/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]387 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
388 */
389#if defined(DEBUG_FSM)
390static void http_silent_debug(int line, struct session *s)
391{
392 int size = 0;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]393 size += snprintf(trash + size, trashlen - size,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]394 "[%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",
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]395 line,
396 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]397 s->req->data, s->req->size, s->req->l, s->req->w, s->req->r, s->req->p, s->req->o, s->req->to_forward, s->txn.flags);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]398 write(-1, trash, size);
399 size = 0;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]400 size += snprintf(trash + size, trashlen - size,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]401 " %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",
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]402 line,
403 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]404 s->rep->data, s->rep->size, s->rep->l, s->rep->w, s->rep->r, s->rep->p, s->rep->o, s->rep->to_forward);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]405
406 write(-1, trash, size);
407}
408#else
409#define http_silent_debug(l,s) do { } while (0)
410#endif
411
412/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]413 * Adds a header and its CRLF at the tail of the message's buffer, just before
414 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]415 * The header is also automatically added to the index <hdr_idx>, and the end
416 * of headers is automatically adjusted. The number of bytes added is returned
417 * on success, otherwise <0 is returned indicating an error.
418 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]419int 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]420{
421 int bytes, len;
422
423 len = strlen(text);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]424 bytes = buffer_insert_line2(msg->buf, msg->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]425 if (!bytes)
426 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]427 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]428 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
429}
430
431/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]432 * Adds a header and its CRLF at the tail of the message's buffer, just before
433 * 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]434 * the buffer is only opened and the space reserved, but nothing is copied.
435 * The header is also automatically added to the index <hdr_idx>, and the end
436 * of headers is automatically adjusted. The number of bytes added is returned
437 * on success, otherwise <0 is returned indicating an error.
438 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]439int http_header_add_tail2(struct http_msg *msg,
440 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]441{
442 int bytes;
443
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]444 bytes = buffer_insert_line2(msg->buf, msg->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]445 if (!bytes)
446 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]447 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]448 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
449}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]450
451/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]452 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
453 * If so, returns the position of the first non-space character relative to
454 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
455 * to return a pointer to the place after the first space. Returns 0 if the
456 * header name does not match. Checks are case-insensitive.
457 */
458int http_header_match2(const char *hdr, const char *end,
459 const char *name, int len)
460{
461 const char *val;
462
463 if (hdr + len >= end)
464 return 0;
465 if (hdr[len] != ':')
466 return 0;
467 if (strncasecmp(hdr, name, len) != 0)
468 return 0;
469 val = hdr + len + 1;
470 while (val < end && HTTP_IS_SPHT(*val))
471 val++;
472 if ((val >= end) && (len + 2 <= end - hdr))
473 return len + 2; /* we may replace starting from second space */
474 return val - hdr;
475}
476
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]477/* Find the end of the header value contained between <s> and <e>. See RFC2616,
478 * par 2.2 for more information. Note that it requires a valid header to return
479 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]480 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]481char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]482{
483 int quoted, qdpair;
484
485 quoted = qdpair = 0;
486 for (; s < e; s++) {
487 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]488 else if (quoted) {
489 if (*s == '\\') qdpair = 1;
490 else if (*s == '"') quoted = 0;
491 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]492 else if (*s == '"') quoted = 1;
493 else if (*s == ',') return s;
494 }
495 return s;
496}
497
498/* Find the first or next occurrence of header <name> in message buffer <sol>
499 * using headers index <idx>, and return it in the <ctx> structure. This
500 * structure holds everything necessary to use the header and find next
501 * occurrence. If its <idx> member is 0, the header is searched from the
502 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]503 * 1 when it finds a value, and 0 when there is no more. It is designed to work
504 * with headers defined as comma-separated lists. As a special case, if ctx->val
505 * is NULL when searching for a new values of a header, the current header is
506 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]507 */
508int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]509 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]510 struct hdr_ctx *ctx)
511{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]512 char *eol, *sov;
513 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]514
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]515 cur_idx = ctx->idx;
516 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]517 /* We have previously returned a value, let's search
518 * another one on the same line.
519 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]520 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]521 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]522 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]523 eol = sol + idx->v[cur_idx].len;
524
525 if (sov >= eol)
526 /* no more values in this header */
527 goto next_hdr;
528
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]529 /* values remaining for this header, skip the comma but save it
530 * for later use (eg: for header deletion).
531 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]532 sov++;
533 while (sov < eol && http_is_lws[(unsigned char)*sov])
534 sov++;
535
536 goto return_hdr;
537 }
538
539 /* first request for this header */
540 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]541 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]542 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]543 while (cur_idx) {
544 eol = sol + idx->v[cur_idx].len;
545
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]546 if (len == 0) {
547 /* No argument was passed, we want any header.
548 * To achieve this, we simply build a fake request. */
549 while (sol + len < eol && sol[len] != ':')
550 len++;
551 name = sol;
552 }
553
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]554 if ((len < eol - sol) &&
555 (sol[len] == ':') &&
556 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]557 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]558 sov = sol + len + 1;
559 while (sov < eol && http_is_lws[(unsigned char)*sov])
560 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]562 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]563 ctx->prev = old_idx;
564 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]565 ctx->idx = cur_idx;
566 ctx->val = sov - sol;
567
568 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]569 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]570 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]571 eol--;
572 ctx->tws++;
573 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]574 ctx->vlen = eol - sov;
575 return 1;
576 }
577 next_hdr:
578 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]579 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]580 cur_idx = idx->v[cur_idx].next;
581 }
582 return 0;
583}
584
585int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]586 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]587 struct hdr_ctx *ctx)
588{
589 return http_find_header2(name, strlen(name), sol, idx, ctx);
590}
591
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]592/* Remove one value of a header. This only works on a <ctx> returned by one of
593 * the http_find_header functions. The value is removed, as well as surrounding
594 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]595 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]596 * message <msg>. The new index is returned. If it is zero, it means there is
597 * no more header, so any processing may stop. The ctx is always left in a form
598 * that can be handled by http_find_header2() to find next occurrence.
599 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]600int 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]601{
602 int cur_idx = ctx->idx;
603 char *sol = ctx->line;
604 struct hdr_idx_elem *hdr;
605 int delta, skip_comma;
606
607 if (!cur_idx)
608 return 0;
609
610 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]611 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]612 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]613 delta = buffer_replace2(msg->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]614 http_msg_move_end(msg, delta);
615 idx->used--;
616 hdr->len = 0; /* unused entry */
617 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]618 if (idx->tail == ctx->idx)
619 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]620 ctx->idx = ctx->prev; /* walk back to the end of previous header */
621 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
622 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]623 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]624 return ctx->idx;
625 }
626
627 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]628 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
629 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]630 */
631
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]632 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]633 delta = buffer_replace2(msg->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]634 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]635 NULL, 0);
636 hdr->len += delta;
637 http_msg_move_end(msg, delta);
638 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]639 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]640 return ctx->idx;
641}
642
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]643/* This function handles a server error at the stream interface level. The
644 * stream interface is assumed to be already in a closed state. An optional
645 * message is copied into the input buffer, and an HTTP status code stored.
646 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]647 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]648 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]649static void http_server_error(struct session *t, struct stream_interface *si,
650 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]651{
Willy Tarreaud5fd51c2010-01-22 14:17:47 +0100[diff] [blame]652 buffer_auto_read(si->ob);
653 buffer_abort(si->ob);
654 buffer_auto_close(si->ob);
655 buffer_erase(si->ob);
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]656 buffer_auto_close(si->ib);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]657 buffer_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]658 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]659 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]660 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]661 }
662 if (!(t->flags & SN_ERR_MASK))
663 t->flags |= err;
664 if (!(t->flags & SN_FINST_MASK))
665 t->flags |= finst;
666}
667
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]668/* This function returns the appropriate error location for the given session
669 * and message.
670 */
671
672struct chunk *error_message(struct session *s, int msgnum)
673{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]674 if (s->be->errmsg[msgnum].str)
675 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]676 else if (s->fe->errmsg[msgnum].str)
677 return &s->fe->errmsg[msgnum];
678 else
679 return &http_err_chunks[msgnum];
680}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]681
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]682/*
683 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
684 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
685 */
686static http_meth_t find_http_meth(const char *str, const int len)
687{
688 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]689 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]690
691 m = ((unsigned)*str - 'A');
692
693 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]694 for (h = http_methods[m]; h->len > 0; h++) {
695 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]697 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]698 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]699 };
700 return HTTP_METH_OTHER;
701 }
702 return HTTP_METH_NONE;
703
704}
705
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]706/* Parse the URI from the given transaction (which is assumed to be in request
707 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
708 * It is returned otherwise.
709 */
710static char *
711http_get_path(struct http_txn *txn)
712{
713 char *ptr, *end;
714
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]715 ptr = txn->req.buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]716 end = ptr + txn->req.sl.rq.u_l;
717
718 if (ptr >= end)
719 return NULL;
720
721 /* RFC2616, par. 5.1.2 :
722 * Request-URI = "*" | absuri | abspath | authority
723 */
724
725 if (*ptr == '*')
726 return NULL;
727
728 if (isalpha((unsigned char)*ptr)) {
729 /* this is a scheme as described by RFC3986, par. 3.1 */
730 ptr++;
731 while (ptr < end &&
732 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
733 ptr++;
734 /* skip '://' */
735 if (ptr == end || *ptr++ != ':')
736 return NULL;
737 if (ptr == end || *ptr++ != '/')
738 return NULL;
739 if (ptr == end || *ptr++ != '/')
740 return NULL;
741 }
742 /* skip [user[:passwd]@]host[:[port]] */
743
744 while (ptr < end && *ptr != '/')
745 ptr++;
746
747 if (ptr == end)
748 return NULL;
749
750 /* OK, we got the '/' ! */
751 return ptr;
752}
753
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]754/* Returns a 302 for a redirectable request. This may only be called just after
755 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
756 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]757 * NOTE: this function is designed to support being called once data are scheduled
758 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]760void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]761{
762 struct http_txn *txn;
763 struct chunk rdr;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]764 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]765 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]766 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]767
768 /* 1: create the response header */
769 rdr.len = strlen(HTTP_302);
770 rdr.str = trash;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]771 rdr.size = trashlen;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]772 memcpy(rdr.str, HTTP_302, rdr.len);
773
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]774 srv = target_srv(&s->target);
775
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]776 /* 2: add the server's prefix */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]777 if (rdr.len + srv->rdr_len > rdr.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]778 return;
779
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]780 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]781 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
782 memcpy(rdr.str + rdr.len, srv->rdr_pfx, srv->rdr_len);
783 rdr.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]784 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]785
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]786 /* 3: add the request URI. Since it was already forwarded, we need
787 * to temporarily rewind the buffer.
788 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]789 txn = &s->txn;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]790 b_rew(s->req, rewind = s->req->o);
791
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 path = http_get_path(txn);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]793 len = buffer_count(s->req, path, b_ptr(s->req, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
794
795 b_adv(s->req, rewind);
796
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]797 if (!path)
798 return;
799
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]800 if (rdr.len + len > rdr.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]801 return;
802
803 memcpy(rdr.str + rdr.len, path, len);
804 rdr.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]805
806 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
807 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
808 rdr.len += 29;
809 } else {
810 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
811 rdr.len += 23;
812 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]813
814 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]815 si_shutr(si);
816 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]817 si->err_type = SI_ET_NONE;
818 si->err_loc = NULL;
819 si->state = SI_ST_CLO;
820
821 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]822 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]823
824 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]825 if (srv)
826 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]827}
828
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]829/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]830 * that the server side is closed. Note that err_type is actually a
831 * bitmask, where almost only aborts may be cumulated with other
832 * values. We consider that aborted operations are more important
833 * than timeouts or errors due to the fact that nobody else in the
834 * logs might explain incomplete retries. All others should avoid
835 * being cumulated. It should normally not be possible to have multiple
836 * aborts at once, but just in case, the first one in sequence is reported.
837 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]838void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]839{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]840 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]841
842 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]843 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
844 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]845 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]846 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
847 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]848 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]849 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
850 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]851 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]852 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
853 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]854 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]855 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
856 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]857 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]858 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
859 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]860 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]861 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
862 500, error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]863}
864
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]865extern const char sess_term_cond[8];
866extern const char sess_fin_state[8];
867extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]868struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]869struct pool_head *pool2_capture;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]870struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]871
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]872/*
873 * Capture headers from message starting at <som> according to header list
874 * <cap_hdr>, and fill the <idx> structure appropriately.
875 */
876void capture_headers(char *som, struct hdr_idx *idx,
877 char **cap, struct cap_hdr *cap_hdr)
878{
879 char *eol, *sol, *col, *sov;
880 int cur_idx;
881 struct cap_hdr *h;
882 int len;
883
884 sol = som + hdr_idx_first_pos(idx);
885 cur_idx = hdr_idx_first_idx(idx);
886
887 while (cur_idx) {
888 eol = sol + idx->v[cur_idx].len;
889
890 col = sol;
891 while (col < eol && *col != ':')
892 col++;
893
894 sov = col + 1;
895 while (sov < eol && http_is_lws[(unsigned char)*sov])
896 sov++;
897
898 for (h = cap_hdr; h; h = h->next) {
899 if ((h->namelen == col - sol) &&
900 (strncasecmp(sol, h->name, h->namelen) == 0)) {
901 if (cap[h->index] == NULL)
902 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]903 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]904
905 if (cap[h->index] == NULL) {
906 Alert("HTTP capture : out of memory.\n");
907 continue;
908 }
909
910 len = eol - sov;
911 if (len > h->len)
912 len = h->len;
913
914 memcpy(cap[h->index], sov, len);
915 cap[h->index][len]=0;
916 }
917 }
918 sol = eol + idx->v[cur_idx].cr + 1;
919 cur_idx = idx->v[cur_idx].next;
920 }
921}
922
923
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]924/* either we find an LF at <ptr> or we jump to <bad>.
925 */
926#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
927
928/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
929 * otherwise to <http_msg_ood> with <state> set to <st>.
930 */
931#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
932 ptr++; \
933 if (likely(ptr < end)) \
934 goto good; \
935 else { \
936 state = (st); \
937 goto http_msg_ood; \
938 } \
939 } while (0)
940
941
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]942/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]943 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]944 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
945 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
946 * will give undefined results.
947 * Note that it is upon the caller's responsibility to ensure that ptr < end,
948 * and that msg->sol points to the beginning of the response.
949 * If a complete line is found (which implies that at least one CR or LF is
950 * found before <end>, the updated <ptr> is returned, otherwise NULL is
951 * returned indicating an incomplete line (which does not mean that parts have
952 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
953 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
954 * upon next call.
955 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]956 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]957 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
958 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]959 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]960 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]961const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]962 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]963 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]964{
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]965 const char *msg_start = msg->buf->p;
966
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]967 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]968 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]969 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]970 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
972
973 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]974 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
976 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]977 state = HTTP_MSG_ERROR;
978 break;
979
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]980 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]981 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]982 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]983 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]984 goto http_msg_rpcode;
985 }
986 if (likely(HTTP_IS_SPHT(*ptr)))
987 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
988 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]989 state = HTTP_MSG_ERROR;
990 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]991
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]992 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]993 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]994 if (likely(!HTTP_IS_LWS(*ptr)))
995 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
996
997 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]998 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]999 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1000 }
1001
1002 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1003 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1004 http_msg_rsp_reason:
1005 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1006 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1007 msg->sl.st.r_l = 0;
1008 goto http_msg_rpline_eol;
1009
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1010 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1011 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1012 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1013 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1014 goto http_msg_rpreason;
1015 }
1016 if (likely(HTTP_IS_SPHT(*ptr)))
1017 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1018 /* so it's a CR/LF, so there is no reason phrase */
1019 goto http_msg_rsp_reason;
1020
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1021 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1022 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1023 if (likely(!HTTP_IS_CRLF(*ptr)))
1024 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1025 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1026 http_msg_rpline_eol:
1027 /* We have seen the end of line. Note that we do not
1028 * necessarily have the \n yet, but at least we know that we
1029 * have EITHER \r OR \n, otherwise the response would not be
1030 * complete. We can then record the response length and return
1031 * to the caller which will be able to register it.
1032 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1033 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1034 return ptr;
1035
1036#ifdef DEBUG_FULL
1037 default:
1038 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1039 exit(1);
1040#endif
1041 }
1042
1043 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1044 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045 if (ret_state)
1046 *ret_state = state;
1047 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1048 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1049 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1050}
1051
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1052/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1053 * This function parses a request line between <ptr> and <end>, starting with
1054 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1055 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1056 * will give undefined results.
1057 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1058 * and that msg->sol points to the beginning of the request.
1059 * If a complete line is found (which implies that at least one CR or LF is
1060 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1061 * returned indicating an incomplete line (which does not mean that parts have
1062 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1063 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1064 * upon next call.
1065 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1066 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1067 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1068 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1069 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1070 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1071const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1072 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1073 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1074{
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1075 const char *msg_start = msg->buf->p;
1076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1077 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1079 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 if (likely(HTTP_IS_TOKEN(*ptr)))
1081 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1082
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1083 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1084 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1085 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1086 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1087
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 if (likely(HTTP_IS_CRLF(*ptr))) {
1089 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1090 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1091 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1094 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1095 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1096 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1097 msg->sl.rq.v_l = 0;
1098 goto http_msg_rqline_eol;
1099 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1100 state = HTTP_MSG_ERROR;
1101 break;
1102
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1103 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1104 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1105 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1106 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1107 goto http_msg_rquri;
1108 }
1109 if (likely(HTTP_IS_SPHT(*ptr)))
1110 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1111 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1112 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1115 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1116 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1118
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1119 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1120 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1121 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1122 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1123
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1124 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1125 /* non-ASCII chars are forbidden unless option
1126 * accept-invalid-http-request is enabled in the frontend.
1127 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1128 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1129 if (msg->err_pos < -1)
1130 goto invalid_char;
1131 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1132 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1133 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1134 }
1135
1136 if (likely(HTTP_IS_CRLF(*ptr))) {
1137 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1138 goto http_msg_req09_uri_e;
1139 }
1140
1141 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1142 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1143 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1144 state = HTTP_MSG_ERROR;
1145 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1146
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1147 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1148 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1149 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1150 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1151 goto http_msg_rqver;
1152 }
1153 if (likely(HTTP_IS_SPHT(*ptr)))
1154 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1155 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1156 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1157
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1158 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1159 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1160 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1161 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1162
1163 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1164 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1165 http_msg_rqline_eol:
1166 /* We have seen the end of line. Note that we do not
1167 * necessarily have the \n yet, but at least we know that we
1168 * have EITHER \r OR \n, otherwise the request would not be
1169 * complete. We can then record the request length and return
1170 * to the caller which will be able to register it.
1171 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1172 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1173 return ptr;
1174 }
1175
1176 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1177 state = HTTP_MSG_ERROR;
1178 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1179
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1180#ifdef DEBUG_FULL
1181 default:
1182 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1183 exit(1);
1184#endif
1185 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1186
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1187 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1188 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189 if (ret_state)
1190 *ret_state = state;
1191 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1192 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1193 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1194}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1195
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1196/*
1197 * Returns the data from Authorization header. Function may be called more
1198 * than once so data is stored in txn->auth_data. When no header is found
1199 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1200 * searching again for something we are unable to find anyway.
1201 */
1202
1203char get_http_auth_buff[BUFSIZE];
1204
1205int
1206get_http_auth(struct session *s)
1207{
1208
1209 struct http_txn *txn = &s->txn;
1210 struct chunk auth_method;
1211 struct hdr_ctx ctx;
1212 char *h, *p;
1213 int len;
1214
1215#ifdef DEBUG_AUTH
1216 printf("Auth for session %p: %d\n", s, txn->auth.method);
1217#endif
1218
1219 if (txn->auth.method == HTTP_AUTH_WRONG)
1220 return 0;
1221
1222 if (txn->auth.method)
1223 return 1;
1224
1225 txn->auth.method = HTTP_AUTH_WRONG;
1226
1227 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1228
1229 if (txn->flags & TX_USE_PX_CONN) {
1230 h = "Proxy-Authorization";
1231 len = strlen(h);
1232 } else {
1233 h = "Authorization";
1234 len = strlen(h);
1235 }
1236
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]1237 if (!http_find_header2(h, len, s->req->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1238 return 0;
1239
1240 h = ctx.line + ctx.val;
1241
1242 p = memchr(h, ' ', ctx.vlen);
1243 if (!p || p == h)
1244 return 0;
1245
1246 chunk_initlen(&auth_method, h, 0, p-h);
1247 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1248
1249 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1250
1251 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
1252 get_http_auth_buff, BUFSIZE - 1);
1253
1254 if (len < 0)
1255 return 0;
1256
1257
1258 get_http_auth_buff[len] = '\0';
1259
1260 p = strchr(get_http_auth_buff, ':');
1261
1262 if (!p)
1263 return 0;
1264
1265 txn->auth.user = get_http_auth_buff;
1266 *p = '\0';
1267 txn->auth.pass = p+1;
1268
1269 txn->auth.method = HTTP_AUTH_BASIC;
1270 return 1;
1271 }
1272
1273 return 0;
1274}
1275
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1276
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1277/*
1278 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1279 * depending on the initial msg->msg_state. The caller is responsible for
1280 * ensuring that the message does not wrap. The function can be preempted
1281 * everywhere when data are missing and recalled at the exact same location
1282 * with no information loss. The message may even be realigned between two
1283 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1284 * 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]1285 * fields. Note that msg->sol will be initialized after completing the first
1286 * state, so that none of the msg pointers has to be initialized prior to the
1287 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1288 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1289void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1290{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1291 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1292 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1293 struct buffer *buf = msg->buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1294
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1295 state = msg->msg_state;
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1296 ptr = buf->p + msg->next;
1297 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1298
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1299 if (unlikely(ptr >= end))
1300 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1301
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1302 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1303 /*
1304 * First, states that are specific to the response only.
1305 * We check them first so that request and headers are
1306 * closer to each other (accessed more often).
1307 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1308 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1309 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1310 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1311 /* we have a start of message, but we have to check
1312 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1313 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1314 */
Willy Tarreau06a000f2012-05-18 23:04:32 +0200[diff] [blame]1315 if (unlikely(ptr != buf->p)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1316 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1317 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1318 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreau06a000f2012-05-18 23:04:32 +0200[diff] [blame]1319 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1320 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1321 msg->sol = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1322 hdr_idx_init(idx);
1323 state = HTTP_MSG_RPVER;
1324 goto http_msg_rpver;
1325 }
1326
1327 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1328 goto http_msg_invalid;
1329
1330 if (unlikely(*ptr == '\n'))
1331 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1332 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1333 /* stop here */
1334
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1336 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1337 EXPECT_LF_HERE(ptr, http_msg_invalid);
1338 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1339 /* stop here */
1340
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1341 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1342 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1343 case HTTP_MSG_RPVER_SP:
1344 case HTTP_MSG_RPCODE:
1345 case HTTP_MSG_RPCODE_SP:
1346 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1347 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1348 state, ptr, end,
1349 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1350 if (unlikely(!ptr))
1351 return;
1352
1353 /* we have a full response and we know that we have either a CR
1354 * or an LF at <ptr>.
1355 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1357
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1358 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1359 if (likely(*ptr == '\r'))
1360 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1361 goto http_msg_rpline_end;
1362
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1363 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1364 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1365 /* msg->sol must point to the first of CR or LF. */
1366 EXPECT_LF_HERE(ptr, http_msg_invalid);
1367 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1368 /* stop here */
1369
1370 /*
1371 * Second, states that are specific to the request only
1372 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1373 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1374 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1375 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1376 /* we have a start of message, but we have to check
1377 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1378 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1379 */
Willy Tarreau06a000f2012-05-18 23:04:32 +0200[diff] [blame]1380 if (likely(ptr != buf->p)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1381 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1382 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1383 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreau06a000f2012-05-18 23:04:32 +0200[diff] [blame]1384 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1385 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1386 msg->sol = 0;
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1387 /* we will need this when keep-alive will be supported
1388 hdr_idx_init(idx);
1389 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1390 state = HTTP_MSG_RQMETH;
1391 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1393
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1394 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1395 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 if (unlikely(*ptr == '\n'))
1398 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1399 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1401
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1402 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1403 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 EXPECT_LF_HERE(ptr, http_msg_invalid);
1405 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1406 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1407
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1408 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1409 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1410 case HTTP_MSG_RQMETH_SP:
1411 case HTTP_MSG_RQURI:
1412 case HTTP_MSG_RQURI_SP:
1413 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1414 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1415 state, ptr, end,
1416 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1417 if (unlikely(!ptr))
1418 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1419
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1420 /* we have a full request and we know that we have either a CR
1421 * or an LF at <ptr>.
1422 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1425 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1426 if (likely(*ptr == '\r'))
1427 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1428 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1431 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1432 /* check for HTTP/0.9 request : no version information available.
1433 * msg->sol must point to the first of CR or LF.
1434 */
1435 if (unlikely(msg->sl.rq.v_l == 0))
1436 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1437
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1438 EXPECT_LF_HERE(ptr, http_msg_invalid);
1439 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1441
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1442 /*
1443 * Common states below
1444 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1445 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1446 http_msg_hdr_first:
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1447 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1448 if (likely(!HTTP_IS_CRLF(*ptr))) {
1449 goto http_msg_hdr_name;
1450 }
1451
1452 if (likely(*ptr == '\r'))
1453 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1454 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1457 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 /* assumes msg->sol points to the first char */
1459 if (likely(HTTP_IS_TOKEN(*ptr)))
1460 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1461
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1462 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463 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]1464
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1465 if (likely(msg->err_pos < -1) || *ptr == '\n')
1466 goto http_msg_invalid;
1467
1468 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1469 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1470
1471 /* and we still accept this non-token character */
1472 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1473
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1474 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1475 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1476 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 if (likely(HTTP_IS_SPHT(*ptr)))
1478 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]1479
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480 /* header value can be basically anything except CR/LF */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1481 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1482
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 if (likely(!HTTP_IS_CRLF(*ptr))) {
1484 goto http_msg_hdr_val;
1485 }
1486
1487 if (likely(*ptr == '\r'))
1488 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1489 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1492 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 EXPECT_LF_HERE(ptr, http_msg_invalid);
1494 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]1495
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1497 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 if (likely(HTTP_IS_SPHT(*ptr))) {
1499 /* replace HT,CR,LF with spaces */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1500 for (; buf->p + msg->sov < ptr; msg->sov++)
1501 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 goto http_msg_hdr_l1_sp;
1503 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1504 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1505 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 goto http_msg_complete_header;
1507
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1509 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1510 /* assumes msg->sol points to the first char, and msg->sov
1511 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 */
1513 if (likely(!HTTP_IS_CRLF(*ptr)))
1514 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1515
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1516 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1517 /* Note: we could also copy eol into ->eoh so that we have the
1518 * real header end in case it ends with lots of LWS, but is this
1519 * really needed ?
1520 */
1521 if (likely(*ptr == '\r'))
1522 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1523 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1524
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1526 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 EXPECT_LF_HERE(ptr, http_msg_invalid);
1528 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]1529
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1531 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1533 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1534 for (; buf->p + msg->eol < ptr; msg->eol++)
1535 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 goto http_msg_hdr_val;
1537 }
1538 http_msg_complete_header:
1539 /*
1540 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1541 * Assumes msg->sol points to the first char, msg->sov points
1542 * to the first character of the value and msg->eol to the
1543 * first CR or LF so we know how the line ends. We insert last
1544 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1545 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1546 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 idx, idx->tail) < 0))
1548 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1549
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1550 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1551 if (likely(!HTTP_IS_CRLF(*ptr))) {
1552 goto http_msg_hdr_name;
1553 }
1554
1555 if (likely(*ptr == '\r'))
1556 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1557 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1560 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1561 /* Assumes msg->sol points to the first of either CR or LF */
1562 EXPECT_LF_HERE(ptr, http_msg_invalid);
1563 ptr++;
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1564 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1565 msg->eoh = msg->sol;
1566 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1567 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1568 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1569
1570 case HTTP_MSG_ERROR:
1571 /* this may only happen if we call http_msg_analyser() twice with an error */
1572 break;
1573
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574#ifdef DEBUG_FULL
1575 default:
1576 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1577 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1578#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 }
1580 http_msg_ood:
1581 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1582 msg->msg_state = state;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1583 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1584 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1585
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 http_msg_invalid:
1587 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1588 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1589 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1590 return;
1591}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1592
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1593/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1594 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1595 * nothing is done and 1 is returned.
1596 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1597static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1598{
1599 int delta;
1600 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1601 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1602
1603 if (msg->sl.rq.v_l != 0)
1604 return 1;
1605
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]1606 cur_end = msg->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1607 delta = 0;
1608
1609 if (msg->sl.rq.u_l == 0) {
1610 /* if no URI was set, add "/" */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1611 delta = buffer_replace2(msg->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1612 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1613 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1614 }
1615 /* add HTTP version */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1616 delta = buffer_replace2(msg->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1617 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1618 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1619 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1620 HTTP_MSG_RQMETH,
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]1621 msg->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1622 NULL, NULL);
1623 if (unlikely(!cur_end))
1624 return 0;
1625
1626 /* we have a full HTTP/1.0 request now and we know that
1627 * we have either a CR or an LF at <ptr>.
1628 */
1629 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1630 return 1;
1631}
1632
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1633/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1634 * and "keep-alive" values. If we already know that some headers may safely
1635 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1636 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1637 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
1638 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1639 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1640 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1641 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1642 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1643void 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]1644{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1645 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1646 const char *hdr_val = "Connection";
1647 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1648
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1649 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1650 return;
1651
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1652 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1653 hdr_val = "Proxy-Connection";
1654 hdr_len = 16;
1655 }
1656
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1657 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1658 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]1659 while (http_find_header2(hdr_val, hdr_len, msg->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1660 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1661 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1662 if (to_del & 2)
1663 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1664 else
1665 txn->flags |= TX_CON_KAL_SET;
1666 }
1667 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1668 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1669 if (to_del & 1)
1670 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1671 else
1672 txn->flags |= TX_CON_CLO_SET;
1673 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1674 }
1675
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1676 txn->flags |= TX_HDR_CONN_PRS;
1677 return;
1678}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1679
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1680/* Apply desired changes on the Connection: header. Values may be removed and/or
1681 * added depending on the <wanted> flags, which are exclusively composed of
1682 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1683 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1684 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1685void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1686{
1687 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1688 const char *hdr_val = "Connection";
1689 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1690
1691 ctx.idx = 0;
1692
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1693
1694 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1695 hdr_val = "Proxy-Connection";
1696 hdr_len = 16;
1697 }
1698
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1699 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]1700 while (http_find_header2(hdr_val, hdr_len, msg->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1701 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1702 if (wanted & TX_CON_KAL_SET)
1703 txn->flags |= TX_CON_KAL_SET;
1704 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1705 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1706 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1707 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1708 if (wanted & TX_CON_CLO_SET)
1709 txn->flags |= TX_CON_CLO_SET;
1710 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1711 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1712 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1713 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1714
1715 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1716 return;
1717
1718 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1719 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1720 hdr_val = "Connection: close";
1721 hdr_len = 17;
1722 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1723 hdr_val = "Proxy-Connection: close";
1724 hdr_len = 23;
1725 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1726 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1727 }
1728
1729 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1730 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1731 hdr_val = "Connection: keep-alive";
1732 hdr_len = 22;
1733 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1734 hdr_val = "Proxy-Connection: keep-alive";
1735 hdr_len = 28;
1736 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1737 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 }
1739 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1740}
1741
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1742/* 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]1743 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1744 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1745 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1746 * 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]1747 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1748int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1749{
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1750 const struct buffer *buf = msg->buf;
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1751 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1752 const char *ptr_old = ptr;
1753 const char *end = buf->data + buf->size;
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1754 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1755 unsigned int chunk = 0;
1756
1757 /* The chunk size is in the following form, though we are only
1758 * interested in the size and CRLF :
1759 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1760 */
1761 while (1) {
1762 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1763 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1764 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1765 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1766 if (c < 0) /* not a hex digit anymore */
1767 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1768 if (++ptr >= end)
1769 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1770 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1771 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1772 chunk = (chunk << 4) + c;
1773 }
1774
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1775 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1776 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1777 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1778
1779 while (http_is_spht[(unsigned char)*ptr]) {
1780 if (++ptr >= end)
1781 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1782 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1784 }
1785
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1786 /* Up to there, we know that at least one byte is present at *ptr. Check
1787 * for the end of chunk size.
1788 */
1789 while (1) {
1790 if (likely(HTTP_IS_CRLF(*ptr))) {
1791 /* we now have a CR or an LF at ptr */
1792 if (likely(*ptr == '\r')) {
1793 if (++ptr >= end)
1794 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1795 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1796 return 0;
1797 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1798
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1799 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1800 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1801 if (++ptr >= end)
1802 ptr = buf->data;
1803 /* done */
1804 break;
1805 }
1806 else if (*ptr == ';') {
1807 /* chunk extension, ends at next CRLF */
1808 if (++ptr >= end)
1809 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1810 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1811 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1812
1813 while (!HTTP_IS_CRLF(*ptr)) {
1814 if (++ptr >= end)
1815 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1816 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1817 return 0;
1818 }
1819 /* we have a CRLF now, loop above */
1820 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1821 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1822 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1823 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1824 }
1825
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1827 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1828 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1829 */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1830 msg->sov += ptr - ptr_old;
1831 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1832 msg->chunk_len = chunk;
1833 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1834 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1835 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1836 error:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1837 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1838 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1839}
1840
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1841/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1842 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1843 * the trailers is found, it is automatically scheduled to be forwarded,
1844 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1845 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1846 * 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]1847 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1848 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1849 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1850 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1851 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1852 * matches the length of trailers already parsed and not forwarded. It is also
1853 * important to note that this function is designed to be able to parse wrapped
1854 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1855 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1856int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1857{
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1858 const struct buffer *buf = msg->buf;
1859
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1860 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1861 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1862 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1863 const char *ptr = b_ptr(buf, msg->next);
1864 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1865 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1866
1867 /* scan current line and stop at LF or CRLF */
1868 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1869 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1870 return 0;
1871
1872 if (*ptr == '\n') {
1873 if (!p1)
1874 p1 = ptr;
1875 p2 = ptr;
1876 break;
1877 }
1878
1879 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1880 if (p1) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1881 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1882 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1883 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 p1 = ptr;
1885 }
1886
1887 ptr++;
1888 if (ptr >= buf->data + buf->size)
1889 ptr = buf->data;
1890 }
1891
1892 /* after LF; point to beginning of next line */
1893 p2++;
1894 if (p2 >= buf->data + buf->size)
1895 p2 = buf->data;
1896
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1897 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1898 if (bytes < 0)
1899 bytes += buf->size;
1900
1901 /* schedule this line for forwarding */
1902 msg->sov += bytes;
1903 if (msg->sov >= buf->size)
1904 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1905
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1906 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1907 /* LF/CRLF at beginning of line => end of trailers at p2.
1908 * Everything was scheduled for forwarding, there's nothing
1909 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1910 */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1911 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1912 msg->msg_state = HTTP_MSG_DONE;
1913 return 1;
1914 }
1915 /* OK, next line then */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1916 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1917 }
1918}
1919
1920/* This function may be called only in HTTP_MSG_DATA_CRLF. It reads the CRLF or
1921 * 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]1922 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1923 * 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]1924 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1925 * not enough data are available, the function does not change anything and
1926 * returns zero. If a parse error is encountered, the function returns < 0 and
1927 * does not change anything. Note: this function is designed to parse wrapped
1928 * CRLF at the end of the buffer.
1929 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1930int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1931{
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1932 const struct buffer *buf = msg->buf;
1933 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1934 int bytes;
1935
1936 /* NB: we'll check data availabilty at the end. It's not a
1937 * problem because whatever we match first will be checked
1938 * against the correct length.
1939 */
1940 bytes = 1;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1941 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1942 if (*ptr == '\r') {
1943 bytes++;
1944 ptr++;
1945 if (ptr >= buf->data + buf->size)
1946 ptr = buf->data;
1947 }
1948
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]1949 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1950 return 0;
1951
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1952 if (*ptr != '\n') {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1953 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1954 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1955 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1956
1957 ptr++;
1958 if (ptr >= buf->data + buf->size)
1959 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1960 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1961 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1962 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1963 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1964 return 1;
1965}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1966
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1967/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1968 * processing can continue on next analysers, or zero if it either needs more
1969 * data or wants to immediately abort the request (eg: timeout, error, ...). It
1970 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
1971 * when it has nothing left to do, and may remove any analyser when it wants to
1972 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1973 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]1974int http_wait_for_request(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1975{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1976 /*
1977 * We will parse the partial (or complete) lines.
1978 * We will check the request syntax, and also join multi-line
1979 * headers. An index of all the lines will be elaborated while
1980 * parsing.
1981 *
1982 * For the parsing, we use a 28 states FSM.
1983 *
1984 * Here is the information we currently have :
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1985 * req->p = beginning of request
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1986 * req->p + msg->eoh = end of processed headers / start of current one
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1987 * req->p + req->i = end of input data
1988 * msg->eol = end of current header or line (LF or CRLF)
1989 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1990 *
1991 * At end of parsing, we may perform a capture of the error (if any), and
1992 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
1993 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
1994 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1995 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1996
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1997 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]1998 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1999 struct http_txn *txn = &s->txn;
2000 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2001 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2002
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2003 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]2004 now_ms, __FUNCTION__,
2005 s,
2006 req,
2007 req->rex, req->wex,
2008 req->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2009 req->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2010 req->analysers);
2011
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2012 /* we're speaking HTTP here, so let's speak HTTP to the client */
2013 s->srv_error = http_return_srv_error;
2014
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2015 /* There's a protected area at the end of the buffer for rewriting
2016 * purposes. We don't want to start to parse the request if the
2017 * protected area is affected, because we may have to move processed
2018 * data later, which is much more complicated.
2019 */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2020 if (buffer_not_empty(req) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2021 if ((txn->flags & TX_NOT_FIRST) &&
2022 unlikely((req->flags & BF_FULL) ||
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]2023 bi_end(req) < b_ptr(req, msg->next) ||
2024 bi_end(req) > req->data + req->size - global.tune.maxrewrite)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]2025 if (req->o) {
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2026 if (req->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
2027 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2028 /* some data has still not left the buffer, wake us once that's done */
2029 buffer_dont_connect(req);
2030 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
2031 return 0;
2032 }
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]2033 if (bi_end(req) < b_ptr(req, msg->next) ||
2034 bi_end(req) > req->data + req->size - global.tune.maxrewrite)
Willy Tarreaua7fe8e52012-05-08 20:40:09 +0200[diff] [blame]2035 buffer_slow_realign(msg->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2036 }
2037
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2038 /* Note that we have the same problem with the response ; we
2039 * may want to send a redirect, error or anything which requires
2040 * some spare space. So we'll ensure that we have at least
2041 * maxrewrite bytes available in the response buffer before
2042 * processing that one. This will only affect pipelined
2043 * keep-alive requests.
2044 */
2045 if ((txn->flags & TX_NOT_FIRST) &&
2046 unlikely((s->rep->flags & BF_FULL) ||
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]2047 bi_end(s->rep) < b_ptr(s->rep, txn->rsp.next) ||
2048 bi_end(s->rep) > s->rep->data + s->rep->size - global.tune.maxrewrite)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]2049 if (s->rep->o) {
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2050 if (s->rep->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
2051 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2052 /* don't let a connection request be initiated */
2053 buffer_dont_connect(req);
Willy Tarreauff7b5882010-01-22 14:41:29 +0100[diff] [blame]2054 s->rep->flags &= ~BF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2055 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2056 return 0;
2057 }
2058 }
2059
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2060 if (likely(msg->next < req->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2061 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2062 }
2063
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2064 /* 1: we might have to print this header in debug mode */
2065 if (unlikely((global.mode & MODE_DEBUG) &&
2066 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2067 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2068 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2069
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2070 sol = req->p;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2071 eol = sol + msg->sl.rq.l;
2072 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2073
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2074 sol += hdr_idx_first_pos(&txn->hdr_idx);
2075 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2076
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2077 while (cur_idx) {
2078 eol = sol + txn->hdr_idx.v[cur_idx].len;
2079 debug_hdr("clihdr", s, sol, eol);
2080 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2081 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2082 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2083 }
2084
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2085
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2086 /*
2087 * Now we quickly check if we have found a full valid request.
2088 * If not so, we check the FD and buffer states before leaving.
2089 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2090 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2091 * requests are checked first. When waiting for a second request
2092 * on a keep-alive session, if we encounter and error, close, t/o,
2093 * we note the error in the session flags but don't set any state.
2094 * Since the error will be noted there, it will not be counted by
2095 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2096 * Last, we may increase some tracked counters' http request errors on
2097 * the cases that are deliberately the client's fault. For instance,
2098 * a timeout or connection reset is not counted as an error. However
2099 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2100 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2101
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2102 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2103 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2104 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2105 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2106 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2107 session_inc_http_req_ctr(s);
2108 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2109 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2110 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2111 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2112
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2113 /* 1: Since we are in header mode, if there's no space
2114 * left for headers, we won't be able to free more
2115 * later, so the session will never terminate. We
2116 * must terminate it now.
2117 */
2118 if (unlikely(req->flags & BF_FULL)) {
2119 /* FIXME: check if URI is set and return Status
2120 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2121 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2122 session_inc_http_req_ctr(s);
2123 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2124 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2125 if (msg->err_pos < 0)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2126 msg->err_pos = req->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2127 goto return_bad_req;
2128 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2129
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2130 /* 2: have we encountered a read error ? */
2131 else if (req->flags & BF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2132 if (!(s->flags & SN_ERR_MASK))
2133 s->flags |= SN_ERR_CLICL;
2134
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2135 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2136 goto failed_keep_alive;
2137
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2138 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2139 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2140 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]2141 session_inc_http_err_ctr(s);
2142 }
2143
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2144 msg->msg_state = HTTP_MSG_ERROR;
2145 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2146
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2147 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2148 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2149 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2150 if (s->listener->counters)
2151 s->listener->counters->failed_req++;
2152
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2153 if (!(s->flags & SN_FINST_MASK))
2154 s->flags |= SN_FINST_R;
2155 return 0;
2156 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2157
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2158 /* 3: has the read timeout expired ? */
2159 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2160 if (!(s->flags & SN_ERR_MASK))
2161 s->flags |= SN_ERR_CLITO;
2162
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2163 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2164 goto failed_keep_alive;
2165
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2166 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2167 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2168 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]2169 session_inc_http_err_ctr(s);
2170 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2171 txn->status = 408;
2172 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
2173 msg->msg_state = HTTP_MSG_ERROR;
2174 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2175
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2176 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2177 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2178 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2179 if (s->listener->counters)
2180 s->listener->counters->failed_req++;
2181
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2182 if (!(s->flags & SN_FINST_MASK))
2183 s->flags |= SN_FINST_R;
2184 return 0;
2185 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2186
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2187 /* 4: have we encountered a close ? */
2188 else if (req->flags & BF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2189 if (!(s->flags & SN_ERR_MASK))
2190 s->flags |= SN_ERR_CLICL;
2191
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2192 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2193 goto failed_keep_alive;
2194
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2195 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2196 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]2197 txn->status = 400;
2198 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2199 msg->msg_state = HTTP_MSG_ERROR;
2200 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2201
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2202 session_inc_http_err_ctr(s);
2203 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2204 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2205 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2206 if (s->listener->counters)
2207 s->listener->counters->failed_req++;
2208
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2209 if (!(s->flags & SN_FINST_MASK))
2210 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2211 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2212 }
2213
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2214 buffer_dont_connect(req);
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2215 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreauff7b5882010-01-22 14:41:29 +0100[diff] [blame]2216 s->rep->flags &= ~BF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2217#ifdef TCP_QUICKACK
Willy Tarreau93548be2012-05-13 08:44:16 +0200[diff] [blame]2218 if (s->listener->options & LI_O_NOQUICKACK && req->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2219 /* We need more data, we have to re-enable quick-ack in case we
2220 * previously disabled it, otherwise we might cause the client
2221 * to delay next data.
2222 */
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]2223 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2224 }
2225#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2226
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2227 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2228 /* If the client starts to talk, let's fall back to
2229 * request timeout processing.
2230 */
2231 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2232 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2233 }
2234
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2235 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2236 if (!tick_isset(req->analyse_exp)) {
2237 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2238 (txn->flags & TX_WAIT_NEXT_RQ) &&
2239 tick_isset(s->be->timeout.httpka))
2240 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2241 else
2242 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2243 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2244
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2245 /* we're not ready yet */
2246 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2247
2248 failed_keep_alive:
2249 /* Here we process low-level errors for keep-alive requests. In
2250 * short, if the request is not the first one and it experiences
2251 * a timeout, read error or shutdown, we just silently close so
2252 * that the client can try again.
2253 */
2254 txn->status = 0;
2255 msg->msg_state = HTTP_MSG_RQBEFORE;
2256 req->analysers = 0;
2257 s->logs.logwait = 0;
Willy Tarreauff7b5882010-01-22 14:41:29 +0100[diff] [blame]2258 s->rep->flags &= ~BF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2259 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2260 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2261 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2262
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2263 /* OK now we have a complete HTTP request with indexed headers. Let's
2264 * complete the request parsing by setting a few fields we will need
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2265 * later. At this point, we have the last CRLF at req->data + msg->eoh.
2266 * 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]2267 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2268 * byte after the last LF. msg->sov points to the first byte of data.
2269 * msg->eol cannot be trusted because it may have been left uninitialized
2270 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2271 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2272
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2273 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2274 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2275
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2276 if (txn->flags & TX_WAIT_NEXT_RQ) {
2277 /* kill the pending keep-alive timeout */
2278 txn->flags &= ~TX_WAIT_NEXT_RQ;
2279 req->analyse_exp = TICK_ETERNITY;
2280 }
2281
2282
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2283 /* Maybe we found in invalid header name while we were configured not
2284 * to block on that, so we have to capture it now.
2285 */
2286 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2287 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]2288
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2289 /*
2290 * 1: identify the method
2291 */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]2292 txn->meth = find_http_meth(req->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2293
2294 /* we can make use of server redirect on GET and HEAD */
2295 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2296 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2297
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2298 /*
2299 * 2: check if the URI matches the monitor_uri.
2300 * We have to do this for every request which gets in, because
2301 * the monitor-uri is defined by the frontend.
2302 */
2303 if (unlikely((s->fe->monitor_uri_len != 0) &&
2304 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]2305 !memcmp(req->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2306 s->fe->monitor_uri,
2307 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2308 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2309 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2310 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2311 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2312
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2313 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2314 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2315
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2316 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2317 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2318 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]2319
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 ret = acl_pass(ret);
2321 if (cond->pol == ACL_COND_UNLESS)
2322 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2323
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2324 if (ret) {
2325 /* we fail this request, let's return 503 service unavail */
2326 txn->status = 503;
2327 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
2328 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2329 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2330 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2331
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2332 /* nothing to fail, let's reply normaly */
2333 txn->status = 200;
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]2334 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2335 goto return_prx_cond;
2336 }
2337
2338 /*
2339 * 3: Maybe we have to copy the original REQURI for the logs ?
2340 * Note: we cannot log anymore if the request has been
2341 * classified as invalid.
2342 */
2343 if (unlikely(s->logs.logwait & LW_REQ)) {
2344 /* we have a complete HTTP request that we must log */
2345 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2346 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 if (urilen >= REQURI_LEN)
2349 urilen = REQURI_LEN - 1;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2350 memcpy(txn->uri, req->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2351 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2352
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 if (!(s->logs.logwait &= ~LW_REQ))
2354 s->do_log(s);
2355 } else {
2356 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2357 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2358 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2359
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2360 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2361 s->unique_id = pool_alloc2(pool2_uniqueid);
2362 }
2363
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2364 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2365 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2366 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2367
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2368 /* ... and check if the request is HTTP/1.1 or above */
2369 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]2370 ((req->p[msg->sl.rq.v + 5] > '1') ||
2371 ((req->p[msg->sl.rq.v + 5] == '1') &&
2372 (req->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2373 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2374
2375 /* "connection" has not been parsed yet */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2376 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2377
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2378 /* if the frontend has "option http-use-proxy-header", we'll check if
2379 * we have what looks like a proxied connection instead of a connection,
2380 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2381 * Note that this is *not* RFC-compliant, however browsers and proxies
2382 * happen to do that despite being non-standard :-(
2383 * We consider that a request not beginning with either '/' or '*' is
2384 * a proxied connection, which covers both "scheme://location" and
2385 * CONNECT ip:port.
2386 */
2387 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]2388 req->p[msg->sl.rq.u] != '/' && req->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2389 txn->flags |= TX_USE_PX_CONN;
2390
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2391 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2392 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2393
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2394 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2395 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]2396 capture_headers(req->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2397 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2398
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2399 /* 6: determine the transfer-length.
2400 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2401 * the presence of a message-body in a REQUEST and its transfer length
2402 * must be determined that way (in order of precedence) :
2403 * 1. The presence of a message-body in a request is signaled by the
2404 * inclusion of a Content-Length or Transfer-Encoding header field
2405 * in the request's header fields. When a request message contains
2406 * both a message-body of non-zero length and a method that does
2407 * not define any semantics for that request message-body, then an
2408 * origin server SHOULD either ignore the message-body or respond
2409 * with an appropriate error message (e.g., 413). A proxy or
2410 * gateway, when presented the same request, SHOULD either forward
2411 * the request inbound with the message- body or ignore the
2412 * message-body when determining a response.
2413 *
2414 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2415 * and the "chunked" transfer-coding (Section 6.2) is used, the
2416 * transfer-length is defined by the use of this transfer-coding.
2417 * If a Transfer-Encoding header field is present and the "chunked"
2418 * transfer-coding is not present, the transfer-length is defined
2419 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2420 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2421 * 3. If a Content-Length header field is present, its decimal value in
2422 * OCTETs represents both the entity-length and the transfer-length.
2423 * If a message is received with both a Transfer-Encoding header
2424 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2425 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2426 * 4. By the server closing the connection. (Closing the connection
2427 * cannot be used to indicate the end of a request body, since that
2428 * would leave no possibility for the server to send back a response.)
2429 *
2430 * Whenever a transfer-coding is applied to a message-body, the set of
2431 * transfer-codings MUST include "chunked", unless the message indicates
2432 * it is terminated by closing the connection. When the "chunked"
2433 * transfer-coding is used, it MUST be the last transfer-coding applied
2434 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2435 */
2436
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2437 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2438 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2439 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2440 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]2441 http_find_header2("Transfer-Encoding", 17, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2442 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2443 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2444 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2445 /* bad transfer-encoding (chunked followed by something else) */
2446 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2447 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2448 break;
2449 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2450 }
2451
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2452 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2453 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]2454 http_find_header2("Content-Length", 14, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2455 signed long long cl;
2456
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2457 if (!ctx.vlen) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2458 msg->err_pos = ctx.line + ctx.val - req->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2459 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2460 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2461
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2462 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2463 msg->err_pos = ctx.line + ctx.val - req->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2464 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2465 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2466
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2467 if (cl < 0) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2468 msg->err_pos = ctx.line + ctx.val - req->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2469 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2470 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2471
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2472 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2473 msg->err_pos = ctx.line + ctx.val - req->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2474 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2475 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2476
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2477 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2478 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2479 }
2480
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2481 /* bodyless requests have a known length */
2482 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2483 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2484
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2485 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2486 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2487 req->analyse_exp = TICK_ETERNITY;
2488 return 1;
2489
2490 return_bad_req:
2491 /* We centralize bad requests processing here */
2492 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2493 /* we detected a parsing error. We want to archive this request
2494 * in the dedicated proxy area for later troubleshooting.
2495 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2496 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]2497 }
2498
2499 txn->req.msg_state = HTTP_MSG_ERROR;
2500 txn->status = 400;
2501 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2502
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2503 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2504 if (s->listener->counters)
2505 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2506
2507 return_prx_cond:
2508 if (!(s->flags & SN_ERR_MASK))
2509 s->flags |= SN_ERR_PRXCOND;
2510 if (!(s->flags & SN_FINST_MASK))
2511 s->flags |= SN_FINST_R;
2512
2513 req->analysers = 0;
2514 req->analyse_exp = TICK_ETERNITY;
2515 return 0;
2516}
2517
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2518/* We reached the stats page through a POST request.
2519 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2520 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2521 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2522int http_process_req_stat_post(struct stream_interface *si, struct http_txn *txn, struct buffer *req)
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2523{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2524 struct proxy *px = NULL;
2525 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2526
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2527 char key[LINESIZE];
2528 int action = ST_ADM_ACTION_NONE;
2529 int reprocess = 0;
2530
2531 int total_servers = 0;
2532 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2533
2534 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2535 char *st_cur_param = NULL;
2536 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2537
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2538 first_param = req->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2539 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2540
2541 cur_param = next_param = end_params;
2542
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2543 if (end_params >= req->data + req->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2544 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2545 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2546 return 1;
2547 }
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2548 else if (end_params > req->p + req->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2549 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2550 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2551 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2552 }
2553
2554 *end_params = '\0';
2555
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2556 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2557
2558 /*
2559 * Parse the parameters in reverse order to only store the last value.
2560 * From the html form, the backend and the action are at the end.
2561 */
2562 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2563 char *value;
2564 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2565
2566 cur_param--;
2567 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2568 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2569 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2570 poffset = (cur_param != first_param ? 1 : 0);
2571 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2572 if ((plen > 0) && (plen <= sizeof(key))) {
2573 strncpy(key, cur_param + poffset, plen);
2574 key[plen - 1] = '\0';
2575 } else {
2576 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2577 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2578 }
2579
2580 /* Parse the value */
2581 value = key;
2582 while (*value != '\0' && *value != '=') {
2583 value++;
2584 }
2585 if (*value == '=') {
2586 /* Ok, a value is found, we can mark the end of the key */
2587 *value++ = '\0';
2588 }
2589
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2590 if (!url_decode(key) || !url_decode(value))
2591 break;
2592
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2593 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2594 if (!px && (strcmp(key, "b") == 0)) {
2595 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2596 /* the backend name is unknown or ambiguous (duplicate names) */
2597 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2598 goto out;
2599 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2600 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2601 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2602 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2603 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2604 }
2605 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2606 action = ST_ADM_ACTION_ENABLE;
2607 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame^]2608 else if (strcmp(value, "stop") == 0) {
2609 action = ST_ADM_ACTION_STOP;
2610 }
2611 else if (strcmp(value, "start") == 0) {
2612 action = ST_ADM_ACTION_START;
2613 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2614 else {
2615 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2616 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2617 }
2618 }
2619 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2620 if (!(px && action)) {
2621 /*
2622 * Indicates that we'll need to reprocess the parameters
2623 * as soon as backend and action are known
2624 */
2625 if (!reprocess) {
2626 st_cur_param = cur_param;
2627 st_next_param = next_param;
2628 }
2629 reprocess = 1;
2630 }
2631 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2632 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2633 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2634 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2635 /* Not already in maintenance, we can change the server state */
2636 sv->state |= SRV_MAINTAIN;
2637 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2638 altered_servers++;
2639 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2640 }
2641 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2642 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2643 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2644 /* Already in maintenance, we can change the server state */
2645 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2646 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2647 altered_servers++;
2648 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2649 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame^]2650 break;
2651 case ST_ADM_ACTION_STOP:
2652 case ST_ADM_ACTION_START:
2653 if (action == ST_ADM_ACTION_START)
2654 sv->uweight = sv->iweight;
2655 else
2656 sv->uweight = 0;
2657
2658 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2659 /* we must take care of not pushing the server to full throttle during slow starts */
2660 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2661 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2662 else
2663 sv->eweight = BE_WEIGHT_SCALE;
2664 sv->eweight *= sv->uweight;
2665 } else {
2666 sv->eweight = sv->uweight;
2667 }
2668
2669 /* static LB algorithms are a bit harder to update */
2670 if (px->lbprm.update_server_eweight)
2671 px->lbprm.update_server_eweight(sv);
2672 else if (sv->eweight) {
2673 if (px->lbprm.set_server_status_up)
2674 px->lbprm.set_server_status_up(sv);
2675 }
2676 else {
2677 if (px->lbprm.set_server_status_down)
2678 px->lbprm.set_server_status_down(sv);
2679 }
2680 altered_servers++;
2681 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2682 break;
2683 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2684 } else {
2685 /* the server name is unknown or ambiguous (duplicate names) */
2686 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2687 }
2688 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2689 if (reprocess && px && action) {
2690 /* Now, we know the backend and the action chosen by the user.
2691 * We can safely restart from the first server parameter
2692 * to reprocess them
2693 */
2694 cur_param = st_cur_param;
2695 next_param = st_next_param;
2696 reprocess = 0;
2697 goto reprocess_servers;
2698 }
2699
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2700 next_param = cur_param;
2701 }
2702 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2703
2704 if (total_servers == 0) {
2705 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2706 }
2707 else if (altered_servers == 0) {
2708 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2709 }
2710 else if (altered_servers == total_servers) {
2711 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2712 }
2713 else {
2714 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2715 }
2716 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2717 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2718}
2719
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2720/* returns a pointer to the first rule which forbids access (deny or http_auth),
2721 * or NULL if everything's OK.
2722 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2723static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2724http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2725{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2726 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2727
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2728 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2729 int ret = 1;
2730
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2731 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2732 continue;
2733
2734 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2735 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2736 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]2737 ret = acl_pass(ret);
2738
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2739 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2740 ret = !ret;
2741 }
2742
2743 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2744 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2745 return NULL; /* no problem */
2746 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2747 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2748 }
2749 }
2750 return NULL;
2751}
2752
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2753/* This stream analyser runs all HTTP request processing which is common to
2754 * frontends and backends, which means blocking ACLs, filters, connection-close,
2755 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2756 * 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]2757 * either needs more data or wants to immediately abort the request (eg: deny,
2758 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2759 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2760int http_process_req_common(struct session *s, struct buffer *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2761{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2762 struct http_txn *txn = &s->txn;
2763 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2764 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2765 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2766 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2767 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2768 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2769
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2770 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2771 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2772 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2773 return 0;
2774 }
2775
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2776 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2777 req->analyse_exp = TICK_ETERNITY;
2778
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2779 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]2780 now_ms, __FUNCTION__,
2781 s,
2782 req,
2783 req->rex, req->wex,
2784 req->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2785 req->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2786 req->analysers);
2787
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2788 /* first check whether we have some ACLs set to block this request */
2789 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2790 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]2791
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2792 ret = acl_pass(ret);
2793 if (cond->pol == ACL_COND_UNLESS)
2794 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2795
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2796 if (ret) {
2797 txn->status = 403;
2798 /* let's log the request time */
2799 s->logs.tv_request = now;
2800 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2801 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2802 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2803 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2804 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2805
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2806 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2807 http_req_last_rule = http_check_access_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]2808
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2809 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2810 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2811 do_stats = stats_check_uri(s->rep->prod, txn, px);
2812 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2813 http_req_last_rule = http_check_access_rule(px, &px->uri_auth->http_req_rules, s, txn);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2814 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2815 else
2816 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2817
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2818 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2819 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_DENY) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2820 txn->status = 403;
2821 s->logs.tv_request = now;
2822 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2823 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]2824 s->fe->fe_counters.denied_req++;
2825 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
2826 s->be->be_counters.denied_req++;
2827 if (s->listener->counters)
2828 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2829 goto return_prx_cond;
2830 }
2831
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2832 /* try headers filters */
2833 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]2834 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2835 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2836
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2837 /* has the request been denied ? */
2838 if (txn->flags & TX_CLDENY) {
2839 /* no need to go further */
2840 txn->status = 403;
2841 /* let's log the request time */
2842 s->logs.tv_request = now;
2843 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2844 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2845 goto return_prx_cond;
2846 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2847
2848 /* When a connection is tarpitted, we use the tarpit timeout,
2849 * which may be the same as the connect timeout if unspecified.
2850 * If unset, then set it to zero because we really want it to
2851 * eventually expire. We build the tarpit as an analyser.
2852 */
2853 if (txn->flags & TX_CLTARPIT) {
2854 buffer_erase(s->req);
2855 /* wipe the request out so that we can drop the connection early
2856 * if the client closes first.
2857 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2858 buffer_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2859 req->analysers = 0; /* remove switching rules etc... */
2860 req->analysers |= AN_REQ_HTTP_TARPIT;
2861 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2862 if (!req->analyse_exp)
2863 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2864 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2865 return 1;
2866 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2867 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2868
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2869 /* Until set to anything else, the connection mode is set as TUNNEL. It will
2870 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2871 * Option httpclose by itself does not set a mode, it remains a tunnel mode
2872 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2873 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
2874 * avoid to redo the same work if FE and BE have the same settings (common).
2875 * The method consists in checking if options changed between the two calls
2876 * (implying that either one is non-null, or one of them is non-null and we
2877 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2878 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2879
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]2880 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
2881 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
2882 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
2883 (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]2884 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2885
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]2886 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
2887 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2888 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2889 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
2890 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2891 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2892 tmp = TX_CON_WANT_CLO;
2893
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2894 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2895 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2896
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2897 if (!(txn->flags & TX_HDR_CONN_PRS)) {
2898 /* parse the Connection header and possibly clean it */
2899 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2900 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]2901 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2902 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2903 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2904 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2905 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2906 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2907 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2908
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2909 /* check if client or config asks for explicit close in KAL/SCL */
2910 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2911 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2912 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2913 (!(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]2914 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2915 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]2916 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2917 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2918 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2919
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2920 /* we can be blocked here because the request needs to be authenticated,
2921 * either to pass or to access stats.
2922 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2923 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_HTTP_AUTH) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2924 struct chunk msg;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2925 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2926
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2927 if (!realm)
2928 realm = do_stats?STATS_DEFAULT_REALM:px->id;
2929
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]2930 sprintf(trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]2931 chunk_initlen(&msg, trash, trashlen, strlen(trash));
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2932 txn->status = 401;
2933 stream_int_retnclose(req->prod, &msg);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2934 /* on 401 we still count one error, because normal browsing
2935 * won't significantly increase the counter but brute force
2936 * attempts will.
2937 */
2938 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2939 goto return_prx_cond;
2940 }
2941
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2942 /* add request headers from the rule sets in the same order */
2943 list_for_each_entry(wl, &px->req_add, list) {
2944 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2945 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]2946 ret = acl_pass(ret);
2947 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
2948 ret = !ret;
2949 if (!ret)
2950 continue;
2951 }
2952
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2953 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2954 goto return_bad_req;
2955 }
2956
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2957 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2958 struct stats_admin_rule *stats_admin_rule;
2959
2960 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2961 * FIXME!!! that one is rather dangerous, we want to
2962 * make it follow standard rules (eg: clear req->analysers).
2963 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2964
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2965 /* now check whether we have some admin rules for this request */
2966 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2967 int ret = 1;
2968
2969 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2970 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2971 ret = acl_pass(ret);
2972 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2973 ret = !ret;
2974 }
2975
2976 if (ret) {
2977 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2978 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2979 break;
2980 }
2981 }
2982
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2983 /* Was the status page requested with a POST ? */
2984 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2985 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2986 if (msg->msg_state < HTTP_MSG_100_SENT) {
2987 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2988 * send an HTTP/1.1 100 Continue intermediate response.
2989 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2990 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2991 struct hdr_ctx ctx;
2992 ctx.idx = 0;
2993 /* Expect is allowed in 1.1, look for it */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]2994 if (http_find_header2("Expect", 6, req->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2995 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]2996 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2997 }
2998 }
2999 msg->msg_state = HTTP_MSG_100_SENT;
3000 s->logs.tv_request = now; /* update the request timer to reflect full request */
3001 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3002 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3003 /* we need more data */
3004 req->analysers |= an_bit;
3005 buffer_dont_connect(req);
3006 return 0;
3007 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3008 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3009 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3010 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3011 }
3012
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3013 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3014 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3015 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau7b7a8e92011-03-27 19:53:06 +0200[diff] [blame]3016 copy_target(&s->target, &s->rep->prod->target); // for logging only
Willy Tarreau94981132012-05-21 17:09:48 +0200[diff] [blame]3017 s->rep->prod->conn.data_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3018 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3019 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3020 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3021 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3022
3023 return 0;
3024
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3025 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3026
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3027 /* check whether we have some ACLs set to redirect this request */
3028 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3029 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3030
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3031 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3032 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]3033 ret = acl_pass(ret);
3034 if (rule->cond->pol == ACL_COND_UNLESS)
3035 ret = !ret;
3036 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3037
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3038 if (ret) {
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]3039 struct chunk rdr = { .str = trash, .size = trashlen, .len = 0 };
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3040 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3041
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3042 /* build redirect message */
3043 switch(rule->code) {
3044 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3045 msg_fmt = HTTP_303;
3046 break;
3047 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3048 msg_fmt = HTTP_301;
3049 break;
3050 case 302:
3051 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3052 msg_fmt = HTTP_302;
3053 break;
3054 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3055
Willy Tarreau3bb9c232010-01-03 12:24:37 +0100[diff] [blame]3056 if (unlikely(!chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3057 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3058
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3059 switch(rule->type) {
3060 case REDIRECT_TYPE_PREFIX: {
3061 const char *path;
3062 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3063
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3064 path = http_get_path(txn);
3065 /* build message using path */
3066 if (path) {
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]3067 pathlen = txn->req.sl.rq.u_l + (req->p + txn->req.sl.rq.u) - path;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3068 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3069 int qs = 0;
3070 while (qs < pathlen) {
3071 if (path[qs] == '?') {
3072 pathlen = qs;
3073 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3074 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3075 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3076 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3077 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3078 } else {
3079 path = "/";
3080 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3081 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3082
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3083 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3084 goto return_bad_req;
3085
3086 /* add prefix. Note that if prefix == "/", we don't want to
3087 * add anything, otherwise it makes it hard for the user to
3088 * configure a self-redirection.
3089 */
3090 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3091 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3092 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3093 }
3094
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3095 /* add path */
3096 memcpy(rdr.str + rdr.len, path, pathlen);
3097 rdr.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3098
3099 /* append a slash at the end of the location is needed and missing */
3100 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3101 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3102 if (rdr.len > rdr.size - 5)
3103 goto return_bad_req;
3104 rdr.str[rdr.len] = '/';
3105 rdr.len++;
3106 }
3107
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3108 break;
3109 }
3110 case REDIRECT_TYPE_LOCATION:
3111 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3112 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3113 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3114
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3115 /* add location */
3116 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3117 rdr.len += rule->rdr_len;
3118 break;
3119 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3120
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3121 if (rule->cookie_len) {
3122 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
3123 rdr.len += 14;
3124 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
3125 rdr.len += rule->cookie_len;
3126 memcpy(rdr.str + rdr.len, "\r\n", 2);
3127 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3128 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3129
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3130 /* add end of headers and the keep-alive/close status.
3131 * We may choose to set keep-alive if the Location begins
3132 * with a slash, because the client will come back to the
3133 * same server.
3134 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3135 txn->status = rule->code;
3136 /* let's log the request time */
3137 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3138
3139 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3140 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3141 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3142 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3143 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3144 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3145 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3146 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3147 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: keep-alive", 30);
3148 rdr.len += 30;
3149 } else {
3150 memcpy(rdr.str + rdr.len, "\r\nConnection: keep-alive", 24);
3151 rdr.len += 24;
3152 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3153 }
3154 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
3155 rdr.len += 4;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3156 bo_inject(req->prod->ob, rdr.str, rdr.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3157 /* "eat" the request */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3158 bi_fast_delete(req, msg->sov);
3159 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3160 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3161 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3162 txn->req.msg_state = HTTP_MSG_CLOSED;
3163 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3164 break;
3165 } else {
3166 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3167 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3168 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3169 rdr.len += 29;
3170 } else {
3171 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
3172 rdr.len += 23;
3173 }
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]3174 stream_int_retnclose(req->prod, &rdr);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3175 goto return_prx_cond;
3176 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3177 }
3178 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3179
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3180 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3181 * If this happens, then the data will not come immediately, so we must
3182 * send all what we have without waiting. Note that due to the small gain
3183 * in waiting for the body of the request, it's easier to simply put the
3184 * BF_SEND_DONTWAIT flag any time. It's a one-shot flag so it will remove
3185 * itself once used.
3186 */
3187 req->flags |= BF_SEND_DONTWAIT;
3188
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3189 /* that's OK for us now, let's move on to next analysers */
3190 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3191
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3192 return_bad_req:
3193 /* We centralize bad requests processing here */
3194 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3195 /* we detected a parsing error. We want to archive this request
3196 * in the dedicated proxy area for later troubleshooting.
3197 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3198 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]3199 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3200
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3201 txn->req.msg_state = HTTP_MSG_ERROR;
3202 txn->status = 400;
3203 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3204
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3205 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3206 if (s->listener->counters)
3207 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3208
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3209 return_prx_cond:
3210 if (!(s->flags & SN_ERR_MASK))
3211 s->flags |= SN_ERR_PRXCOND;
3212 if (!(s->flags & SN_FINST_MASK))
3213 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3214
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3215 req->analysers = 0;
3216 req->analyse_exp = TICK_ETERNITY;
3217 return 0;
3218}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3219
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3220/* This function performs all the processing enabled for the current request.
3221 * It returns 1 if the processing can continue on next analysers, or zero if it
3222 * needs more data, encounters an error, or wants to immediately abort the
3223 * request. It relies on buffers flags, and updates s->req->analysers.
3224 */
3225int http_process_request(struct session *s, struct buffer *req, int an_bit)
3226{
3227 struct http_txn *txn = &s->txn;
3228 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3229
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3230 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3231 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]3232 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3233 return 0;
3234 }
3235
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3236 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]3237 now_ms, __FUNCTION__,
3238 s,
3239 req,
3240 req->rex, req->wex,
3241 req->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3242 req->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3243 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3244
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3245 /*
3246 * Right now, we know that we have processed the entire headers
3247 * and that unwanted requests have been filtered out. We can do
3248 * whatever we want with the remaining request. Also, now we
3249 * may have separate values for ->fe, ->be.
3250 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3251
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3252 /*
3253 * If HTTP PROXY is set we simply get remote server address
3254 * parsing incoming request.
3255 */
3256 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]3257 url2sa(req->p + msg->sl.rq.u, msg->sl.rq.u_l, &s->req->cons->addr.to);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3258 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3259
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3260 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3261 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3262 * Note that doing so might move headers in the request, but
3263 * the fields will stay coherent and the URI will not move.
3264 * This should only be performed in the backend.
3265 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3266 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3267 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3268 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3269
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3270 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3271 * 8: the appsession cookie was looked up very early in 1.2,
3272 * so let's do the same now.
3273 */
3274
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3275 /* It needs to look into the URI unless persistence must be ignored */
3276 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]3277 get_srv_from_appsession(s, req->p + msg->sl.rq.u, msg->sl.rq.u_l);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3278 }
3279
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3280 /* add unique-id if "header-unique-id" is specified */
3281
3282 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3283 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3284
3285 if (s->fe->header_unique_id && s->unique_id) {
3286 int ret = snprintf(trash, global.tune.bufsize, "%s: %s", s->fe->header_unique_id, s->unique_id);
3287 if (ret < 0 || ret > global.tune.bufsize)
3288 goto return_bad_req;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3289 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, trash) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3290 goto return_bad_req;
3291 }
3292
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3293 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3294 * 9: add X-Forwarded-For if either the frontend or the backend
3295 * asks for it.
3296 */
3297 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3298 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3299 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3300 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3301 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : s->fe->fwdfor_hdr_len,
3302 req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3303 /* The header is set to be added only if none is present
3304 * and we found it, so don't do anything.
3305 */
3306 }
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3307 else if (s->req->prod->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3308 /* Add an X-Forwarded-For header unless the source IP is
3309 * in the 'except' network range.
3310 */
3311 if ((!s->fe->except_mask.s_addr ||
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3312 (((struct sockaddr_in *)&s->req->prod->addr.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3313 != s->fe->except_net.s_addr) &&
3314 (!s->be->except_mask.s_addr ||
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3315 (((struct sockaddr_in *)&s->req->prod->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3316 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3317 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3318 unsigned char *pn;
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3319 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3320
3321 /* Note: we rely on the backend to get the header name to be used for
3322 * x-forwarded-for, because the header is really meant for the backends.
3323 * However, if the backend did not specify any option, we have to rely
3324 * on the frontend's header name.
3325 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3326 if (s->be->fwdfor_hdr_len) {
3327 len = s->be->fwdfor_hdr_len;
3328 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3329 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3330 len = s->fe->fwdfor_hdr_len;
3331 memcpy(trash, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3332 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3333 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3334
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3335 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3336 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3337 }
3338 }
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3339 else if (s->req->prod->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3340 /* FIXME: for the sake of completeness, we should also support
3341 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3342 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3343 int len;
3344 char pn[INET6_ADDRSTRLEN];
3345 inet_ntop(AF_INET6,
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3346 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3347 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3348
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3349 /* Note: we rely on the backend to get the header name to be used for
3350 * x-forwarded-for, because the header is really meant for the backends.
3351 * However, if the backend did not specify any option, we have to rely
3352 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3353 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3354 if (s->be->fwdfor_hdr_len) {
3355 len = s->be->fwdfor_hdr_len;
3356 memcpy(trash, s->be->fwdfor_hdr_name, len);
3357 } else {
3358 len = s->fe->fwdfor_hdr_len;
3359 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3360 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3361 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3362
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3363 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3364 goto return_bad_req;
3365 }
3366 }
3367
3368 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3369 * 10: add X-Original-To if either the frontend or the backend
3370 * asks for it.
3371 */
3372 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3373
3374 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3375 if (s->req->prod->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3376 /* Add an X-Original-To header unless the destination IP is
3377 * in the 'except' network range.
3378 */
Willy Tarreau59b94792012-05-11 16:16:40 +0200[diff] [blame]3379 si_get_to_addr(s->req->prod);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3380
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3381 if (s->req->prod->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3382 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3383 (((struct sockaddr_in *)&s->req->prod->addr.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3384 != s->fe->except_to.s_addr) &&
3385 (!s->be->except_mask_to.s_addr ||
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3386 (((struct sockaddr_in *)&s->req->prod->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3387 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3388 int len;
3389 unsigned char *pn;
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3390 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3391
3392 /* Note: we rely on the backend to get the header name to be used for
3393 * x-original-to, because the header is really meant for the backends.
3394 * However, if the backend did not specify any option, we have to rely
3395 * on the frontend's header name.
3396 */
3397 if (s->be->orgto_hdr_len) {
3398 len = s->be->orgto_hdr_len;
3399 memcpy(trash, s->be->orgto_hdr_name, len);
3400 } else {
3401 len = s->fe->orgto_hdr_len;
3402 memcpy(trash, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3403 }
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3404 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
3405
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3406 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3407 goto return_bad_req;
3408 }
3409 }
3410 }
3411
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3412 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set. */
3413 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3414 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3415 unsigned int want_flags = 0;
3416
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3417 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3418 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3419 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3420 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3421 want_flags |= TX_CON_CLO_SET;
3422 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3423 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3424 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3425 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3426 want_flags |= TX_CON_KAL_SET;
3427 }
3428
3429 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3430 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3431 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3432
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3433
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3434 /* If we have no server assigned yet and we're balancing on url_param
3435 * with a POST request, we may be interested in checking the body for
3436 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3437 */
3438 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3439 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3440 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3441 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3442 buffer_dont_connect(req);
3443 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3444 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3445
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3446 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3447 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3448#ifdef TCP_QUICKACK
3449 /* We expect some data from the client. Unless we know for sure
3450 * we already have a full request, we have to re-enable quick-ack
3451 * in case we previously disabled it, otherwise we might cause
3452 * the client to delay further data.
3453 */
3454 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3455 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3456 (msg->body_len > req->i - txn->req.eoh - 2)))
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3457 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3458#endif
3459 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3460
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3461 /*************************************************************
3462 * OK, that's finished for the headers. We have done what we *
3463 * could. Let's switch to the DATA state. *
3464 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3465 req->analyse_exp = TICK_ETERNITY;
3466 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3467
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3468 /* if the server closes the connection, we want to immediately react
3469 * and close the socket to save packets and syscalls.
3470 */
3471 req->cons->flags |= SI_FL_NOHALF;
3472
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3473 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3474 /* OK let's go on with the BODY now */
3475 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3476
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3477 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3478 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3479 /* we detected a parsing error. We want to archive this request
3480 * in the dedicated proxy area for later troubleshooting.
3481 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3482 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]3483 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3484
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3485 txn->req.msg_state = HTTP_MSG_ERROR;
3486 txn->status = 400;
3487 req->analysers = 0;
3488 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3489
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3490 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3491 if (s->listener->counters)
3492 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3493
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3494 if (!(s->flags & SN_ERR_MASK))
3495 s->flags |= SN_ERR_PRXCOND;
3496 if (!(s->flags & SN_FINST_MASK))
3497 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3498 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3499}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3500
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3501/* This function is an analyser which processes the HTTP tarpit. It always
3502 * returns zero, at the beginning because it prevents any other processing
3503 * from occurring, and at the end because it terminates the request.
3504 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3505int http_process_tarpit(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3506{
3507 struct http_txn *txn = &s->txn;
3508
3509 /* This connection is being tarpitted. The CLIENT side has
3510 * already set the connect expiration date to the right
3511 * timeout. We just have to check that the client is still
3512 * there and that the timeout has not expired.
3513 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]3514 buffer_dont_connect(req);
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3515 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
3516 !tick_is_expired(req->analyse_exp, now_ms))
3517 return 0;
3518
3519 /* We will set the queue timer to the time spent, just for
3520 * logging purposes. We fake a 500 server error, so that the
3521 * attacker will not suspect his connection has been tarpitted.
3522 * It will not cause trouble to the logs because we can exclude
3523 * the tarpitted connections by filtering on the 'PT' status flags.
3524 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3525 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3526
3527 txn->status = 500;
3528 if (req->flags != BF_READ_ERROR)
3529 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
3530
3531 req->analysers = 0;
3532 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3533
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3534 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3535 if (s->listener->counters)
3536 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3537
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3538 if (!(s->flags & SN_ERR_MASK))
3539 s->flags |= SN_ERR_PRXCOND;
3540 if (!(s->flags & SN_FINST_MASK))
3541 s->flags |= SN_FINST_T;
3542 return 0;
3543}
3544
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3545/* This function is an analyser which processes the HTTP request body. It looks
3546 * for parameters to be used for the load balancing algorithm (url_param). It
3547 * must only be called after the standard HTTP request processing has occurred,
3548 * because it expects the request to be parsed. It returns zero if it needs to
3549 * read more data, or 1 once it has completed its analysis.
3550 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3551int http_process_request_body(struct session *s, struct buffer *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3552{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3553 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3554 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3555 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3556
3557 /* We have to parse the HTTP request body to find any required data.
3558 * "balance url_param check_post" should have been the only way to get
3559 * into this. We were brought here after HTTP header analysis, so all
3560 * related structures are ready.
3561 */
3562
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3563 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3564 goto missing_data;
3565
3566 if (msg->msg_state < HTTP_MSG_100_SENT) {
3567 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3568 * send an HTTP/1.1 100 Continue intermediate response.
3569 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3570 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3571 struct hdr_ctx ctx;
3572 ctx.idx = 0;
3573 /* Expect is allowed in 1.1, look for it */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]3574 if (http_find_header2("Expect", 6, req->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3575 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3576 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3577 }
3578 }
3579 msg->msg_state = HTTP_MSG_100_SENT;
3580 }
3581
3582 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3583 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3584 * req->p still points to the beginning of the message and msg->sol
3585 * is still null. We must save the body in msg->next because it
3586 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3587 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3588 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3589
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3590 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3591 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3592 else
3593 msg->msg_state = HTTP_MSG_DATA;
3594 }
3595
3596 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3597 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3598 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3599 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3600 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3601 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3602
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3603 if (!ret)
3604 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3605 else if (ret < 0) {
3606 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3607 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3608 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3609 }
3610
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3611 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3612 * We have the first data byte is in msg->sov. We're waiting for at
3613 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3614 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3615
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3616 if (msg->body_len < limit)
3617 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3618
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3619 if (req->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3620 goto http_end;
3621
3622 missing_data:
3623 /* we get here if we need to wait for more data */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3624 if (req->flags & BF_FULL) {
3625 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3626 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3627 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3628
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3629 if ((req->flags & BF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
3630 txn->status = 408;
3631 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3632
3633 if (!(s->flags & SN_ERR_MASK))
3634 s->flags |= SN_ERR_CLITO;
3635 if (!(s->flags & SN_FINST_MASK))
3636 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3637 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3638 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3639
3640 /* we get here if we need to wait for more data */
3641 if (!(req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3642 /* Not enough data. We'll re-use the http-request
3643 * timeout here. Ideally, we should set the timeout
3644 * relative to the accept() date. We just set the
3645 * request timeout once at the beginning of the
3646 * request.
3647 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]3648 buffer_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3649 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3650 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3651 return 0;
3652 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3653
3654 http_end:
3655 /* The situation will not evolve, so let's give up on the analysis. */
3656 s->logs.tv_request = now; /* update the request timer to reflect full request */
3657 req->analysers &= ~an_bit;
3658 req->analyse_exp = TICK_ETERNITY;
3659 return 1;
3660
3661 return_bad_req: /* let's centralize all bad requests */
3662 txn->req.msg_state = HTTP_MSG_ERROR;
3663 txn->status = 400;
3664 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
3665
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3666 if (!(s->flags & SN_ERR_MASK))
3667 s->flags |= SN_ERR_PRXCOND;
3668 if (!(s->flags & SN_FINST_MASK))
3669 s->flags |= SN_FINST_R;
3670
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3671 return_err_msg:
3672 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3673 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3674 if (s->listener->counters)
3675 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3676 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3677}
3678
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3679/* send a server's name with an outgoing request over an established connection.
3680 * Note: this function is designed to be called once the request has been scheduled
3681 * for being forwarded. This is the reason why it rewinds the buffer before
3682 * proceeding.
3683 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3684int 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]3685
3686 struct hdr_ctx ctx;
3687
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3688 char *hdr_name = be->server_id_hdr_name;
3689 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3690 struct buffer *req = txn->req.buf;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3691 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3692 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3693
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3694 ctx.idx = 0;
3695
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3696 old_o = req->o;
3697 if (old_o) {
3698 /* The request was already skipped, let's restore it */
3699 b_rew(req, old_o);
3700 }
3701
3702 old_i = req->i;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]3703 while (http_find_header2(hdr_name, hdr_name_len, txn->req.buf->p, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3704 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3705 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3706 }
3707
3708 /* Add the new header requested with the server value */
3709 hdr_val = trash;
3710 memcpy(hdr_val, hdr_name, hdr_name_len);
3711 hdr_val += hdr_name_len;
3712 *hdr_val++ = ':';
3713 *hdr_val++ = ' ';
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]3714 hdr_val += strlcpy2(hdr_val, srv_name, trash + trashlen - hdr_val);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3715 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, hdr_val - trash);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3716
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3717 if (old_o) {
3718 /* If this was a forwarded request, we must readjust the amount of
3719 * data to be forwarded in order to take into account the size
3720 * variations.
3721 */
3722 b_adv(req, old_o + req->i - old_i);
3723 }
3724
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3725 return 0;
3726}
3727
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3728/* Terminate current transaction and prepare a new one. This is very tricky
3729 * right now but it works.
3730 */
3731void http_end_txn_clean_session(struct session *s)
3732{
3733 /* FIXME: We need a more portable way of releasing a backend's and a
3734 * server's connections. We need a safer way to reinitialize buffer
3735 * flags. We also need a more accurate method for computing per-request
3736 * data.
3737 */
3738 http_silent_debug(__LINE__, s);
3739
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3740 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]3741 si_shutr(s->req->cons);
3742 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3743
3744 http_silent_debug(__LINE__, s);
3745
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3746 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3747 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3748 if (unlikely(s->srv_conn))
3749 sess_change_server(s, NULL);
3750 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3751
3752 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
3753 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]3754 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3755
3756 if (s->txn.status) {
3757 int n;
3758
3759 n = s->txn.status / 100;
3760 if (n < 1 || n > 5)
3761 n = 0;
3762
3763 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3764 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3765
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]3766 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3767 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3768 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3769 }
3770
3771 /* don't count other requests' data */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3772 s->logs.bytes_in -= s->req->i;
3773 s->logs.bytes_out -= s->rep->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3774
3775 /* let's do a final log if we need it */
3776 if (s->logs.logwait &&
3777 !(s->flags & SN_MONITOR) &&
3778 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
3779 s->do_log(s);
3780 }
3781
3782 s->logs.accept_date = date; /* user-visible date for logging */
3783 s->logs.tv_accept = now; /* corrected date for internal use */
3784 tv_zero(&s->logs.tv_request);
3785 s->logs.t_queue = -1;
3786 s->logs.t_connect = -1;
3787 s->logs.t_data = -1;
3788 s->logs.t_close = 0;
3789 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
3790 s->logs.srv_queue_size = 0; /* we will get this number soon */
3791
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3792 s->logs.bytes_in = s->req->total = s->req->i;
3793 s->logs.bytes_out = s->rep->total = s->rep->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3794
3795 if (s->pend_pos)
3796 pendconn_free(s->pend_pos);
3797
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3798 if (target_srv(&s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3799 if (s->flags & SN_CURR_SESS) {
3800 s->flags &= ~SN_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3801 target_srv(&s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3802 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3803 if (may_dequeue_tasks(target_srv(&s->target), s->be))
3804 process_srv_queue(target_srv(&s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3805 }
3806
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]3807 clear_target(&s->target);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3808
3809 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3810 s->req->cons->conn.t.sock.fd = -1; /* just to help with debugging */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3811 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]3812 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3813 s->req->cons->err_loc = NULL;
3814 s->req->cons->exp = TICK_ETERNITY;
3815 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3816 s->req->flags &= ~(BF_SHUTW|BF_SHUTW_NOW|BF_AUTO_CONNECT|BF_WRITE_ERROR|BF_STREAMER|BF_STREAMER_FAST|BF_NEVER_WAIT);
3817 s->rep->flags &= ~(BF_SHUTR|BF_SHUTR_NOW|BF_READ_ATTACHED|BF_READ_ERROR|BF_READ_NOEXP|BF_STREAMER|BF_STREAMER_FAST|BF_WRITE_PARTIAL|BF_NEVER_WAIT);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3818 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]3819 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
3820 s->txn.meth = 0;
3821 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]3822 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]3823 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3824 s->req->cons->flags |= SI_FL_INDEP_STR;
3825
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3826 if (s->fe->options2 & PR_O2_NODELAY) {
3827 s->req->flags |= BF_NEVER_WAIT;
3828 s->rep->flags |= BF_NEVER_WAIT;
3829 }
3830
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3831 /* if the request buffer is not empty, it means we're
3832 * about to process another request, so send pending
3833 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3834 * Just don't do this if the buffer is close to be full,
3835 * because the request will wait for it to flush a little
3836 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3837 */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3838 if (s->req->i) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]3839 if (s->rep->o &&
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3840 !(s->rep->flags & BF_FULL) &&
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]3841 bi_end(s->rep) <= s->rep->data + s->rep->size - global.tune.maxrewrite)
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3842 s->rep->flags |= BF_EXPECT_MORE;
3843 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3844
3845 /* we're removing the analysers, we MUST re-enable events detection */
3846 buffer_auto_read(s->req);
3847 buffer_auto_close(s->req);
3848 buffer_auto_read(s->rep);
3849 buffer_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3850
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]3851 s->req->analysers = s->listener->analysers;
3852 s->req->analysers &= ~AN_REQ_DECODE_PROXY;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3853 s->rep->analysers = 0;
3854
3855 http_silent_debug(__LINE__, s);
3856}
3857
3858
3859/* This function updates the request state machine according to the response
3860 * state machine and buffer flags. It returns 1 if it changes anything (flag
3861 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3862 * it is only used to find when a request/response couple is complete. Both
3863 * this function and its equivalent should loop until both return zero. It
3864 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3865 */
3866int http_sync_req_state(struct session *s)
3867{
3868 struct buffer *buf = s->req;
3869 struct http_txn *txn = &s->txn;
3870 unsigned int old_flags = buf->flags;
3871 unsigned int old_state = txn->req.msg_state;
3872
3873 http_silent_debug(__LINE__, s);
3874 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
3875 return 0;
3876
3877 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3878 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3879 * We can shut the read side unless we want to abort_on_close,
3880 * or we have a POST request. The issue with POST requests is
3881 * that some browsers still send a CRLF after the request, and
3882 * this CRLF must be read so that it does not remain in the kernel
3883 * buffers, otherwise a close could cause an RST on some systems
3884 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3885 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3886 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3887 buffer_dont_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3888
3889 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
3890 goto wait_other_side;
3891
3892 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
3893 /* The server has not finished to respond, so we
3894 * don't want to move in order not to upset it.
3895 */
3896 goto wait_other_side;
3897 }
3898
3899 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
3900 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3901 buffer_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3902 txn->req.msg_state = HTTP_MSG_TUNNEL;
3903 goto wait_other_side;
3904 }
3905
3906 /* When we get here, it means that both the request and the
3907 * response have finished receiving. Depending on the connection
3908 * mode, we'll have to wait for the last bytes to leave in either
3909 * direction, and sometimes for a close to be effective.
3910 */
3911
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3912 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
3913 /* Server-close mode : queue a connection close to the server */
3914 if (!(buf->flags & (BF_SHUTW|BF_SHUTW_NOW)))
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3915 buffer_shutw_now(buf);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3916 }
3917 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
3918 /* Option forceclose is set, or either side wants to close,
3919 * let's enforce it now that we're not expecting any new
3920 * data to come. The caller knows the session is complete
3921 * once both states are CLOSED.
3922 */
3923 if (!(buf->flags & (BF_SHUTW|BF_SHUTW_NOW))) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3924 buffer_shutr_now(buf);
3925 buffer_shutw_now(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3926 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3927 }
3928 else {
3929 /* The last possible modes are keep-alive and tunnel. Since tunnel
3930 * mode does not set the body analyser, we can't reach this place
3931 * in tunnel mode, so we're left with keep-alive only.
3932 * This mode is currently not implemented, we switch to tunnel mode.
3933 */
3934 buffer_auto_read(buf);
3935 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3936 }
3937
3938 if (buf->flags & (BF_SHUTW|BF_SHUTW_NOW)) {
3939 /* if we've just closed an output, let's switch */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3940 buf->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
3941
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3942 if (!(buf->flags & BF_OUT_EMPTY)) {
3943 txn->req.msg_state = HTTP_MSG_CLOSING;
3944 goto http_msg_closing;
3945 }
3946 else {
3947 txn->req.msg_state = HTTP_MSG_CLOSED;
3948 goto http_msg_closed;
3949 }
3950 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3951 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3952 }
3953
3954 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
3955 http_msg_closing:
3956 /* nothing else to forward, just waiting for the output buffer
3957 * to be empty and for the shutw_now to take effect.
3958 */
3959 if (buf->flags & BF_OUT_EMPTY) {
3960 txn->req.msg_state = HTTP_MSG_CLOSED;
3961 goto http_msg_closed;
3962 }
3963 else if (buf->flags & BF_SHUTW) {
3964 txn->req.msg_state = HTTP_MSG_ERROR;
3965 goto wait_other_side;
3966 }
3967 }
3968
3969 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
3970 http_msg_closed:
3971 goto wait_other_side;
3972 }
3973
3974 wait_other_side:
3975 http_silent_debug(__LINE__, s);
3976 return txn->req.msg_state != old_state || buf->flags != old_flags;
3977}
3978
3979
3980/* This function updates the response state machine according to the request
3981 * state machine and buffer flags. It returns 1 if it changes anything (flag
3982 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3983 * it is only used to find when a request/response couple is complete. Both
3984 * this function and its equivalent should loop until both return zero. It
3985 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3986 */
3987int http_sync_res_state(struct session *s)
3988{
3989 struct buffer *buf = s->rep;
3990 struct http_txn *txn = &s->txn;
3991 unsigned int old_flags = buf->flags;
3992 unsigned int old_state = txn->rsp.msg_state;
3993
3994 http_silent_debug(__LINE__, s);
3995 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
3996 return 0;
3997
3998 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
3999 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4000 * still monitor the server connection for a possible close
4001 * while the request is being uploaded, so we don't disable
4002 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4003 */
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4004 /* buffer_dont_read(buf); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4005
4006 if (txn->req.msg_state == HTTP_MSG_ERROR)
4007 goto wait_other_side;
4008
4009 if (txn->req.msg_state < HTTP_MSG_DONE) {
4010 /* The client seems to still be sending data, probably
4011 * because we got an error response during an upload.
4012 * We have the choice of either breaking the connection
4013 * or letting it pass through. Let's do the later.
4014 */
4015 goto wait_other_side;
4016 }
4017
4018 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4019 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4020 buffer_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4021 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
4022 goto wait_other_side;
4023 }
4024
4025 /* When we get here, it means that both the request and the
4026 * response have finished receiving. Depending on the connection
4027 * mode, we'll have to wait for the last bytes to leave in either
4028 * direction, and sometimes for a close to be effective.
4029 */
4030
4031 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4032 /* Server-close mode : shut read and wait for the request
4033 * side to close its output buffer. The caller will detect
4034 * when we're in DONE and the other is in CLOSED and will
4035 * catch that for the final cleanup.
4036 */
4037 if (!(buf->flags & (BF_SHUTR|BF_SHUTR_NOW)))
4038 buffer_shutr_now(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4039 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4040 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4041 /* Option forceclose is set, or either side wants to close,
4042 * let's enforce it now that we're not expecting any new
4043 * data to come. The caller knows the session is complete
4044 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4045 */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4046 if (!(buf->flags & (BF_SHUTW|BF_SHUTW_NOW))) {
4047 buffer_shutr_now(buf);
4048 buffer_shutw_now(buf);
4049 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4050 }
4051 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4052 /* The last possible modes are keep-alive and tunnel. Since tunnel
4053 * mode does not set the body analyser, we can't reach this place
4054 * in tunnel mode, so we're left with keep-alive only.
4055 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4056 */
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4057 buffer_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4058 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4059 }
4060
4061 if (buf->flags & (BF_SHUTW|BF_SHUTW_NOW)) {
4062 /* if we've just closed an output, let's switch */
4063 if (!(buf->flags & BF_OUT_EMPTY)) {
4064 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4065 goto http_msg_closing;
4066 }
4067 else {
4068 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4069 goto http_msg_closed;
4070 }
4071 }
4072 goto wait_other_side;
4073 }
4074
4075 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4076 http_msg_closing:
4077 /* nothing else to forward, just waiting for the output buffer
4078 * to be empty and for the shutw_now to take effect.
4079 */
4080 if (buf->flags & BF_OUT_EMPTY) {
4081 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4082 goto http_msg_closed;
4083 }
4084 else if (buf->flags & BF_SHUTW) {
4085 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4086 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4087 if (target_srv(&s->target))
4088 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4089 goto wait_other_side;
4090 }
4091 }
4092
4093 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4094 http_msg_closed:
4095 /* drop any pending data */
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4096 bi_erase(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4097 buffer_auto_close(buf);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4098 buffer_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4099 goto wait_other_side;
4100 }
4101
4102 wait_other_side:
4103 http_silent_debug(__LINE__, s);
4104 return txn->rsp.msg_state != old_state || buf->flags != old_flags;
4105}
4106
4107
4108/* Resync the request and response state machines. Return 1 if either state
4109 * changes.
4110 */
4111int http_resync_states(struct session *s)
4112{
4113 struct http_txn *txn = &s->txn;
4114 int old_req_state = txn->req.msg_state;
4115 int old_res_state = txn->rsp.msg_state;
4116
4117 http_silent_debug(__LINE__, s);
4118 http_sync_req_state(s);
4119 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4120 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4121 if (!http_sync_res_state(s))
4122 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4123 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4124 if (!http_sync_req_state(s))
4125 break;
4126 }
4127 http_silent_debug(__LINE__, s);
4128 /* OK, both state machines agree on a compatible state.
4129 * There are a few cases we're interested in :
4130 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4131 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4132 * directions, so let's simply disable both analysers.
4133 * - HTTP_MSG_CLOSED on the response only means we must abort the
4134 * request.
4135 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4136 * with server-close mode means we've completed one request and we
4137 * must re-initialize the server connection.
4138 */
4139
4140 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4141 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4142 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4143 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4144 s->req->analysers = 0;
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4145 buffer_auto_close(s->req);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4146 buffer_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4147 s->rep->analysers = 0;
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4148 buffer_auto_close(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4149 buffer_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4150 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4151 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4152 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4153 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4154 (s->rep->flags & BF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4155 s->rep->analysers = 0;
4156 buffer_auto_close(s->rep);
4157 buffer_auto_read(s->rep);
4158 s->req->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4159 buffer_abort(s->req);
4160 buffer_auto_close(s->req);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4161 buffer_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4162 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4163 }
4164 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4165 txn->rsp.msg_state == HTTP_MSG_DONE &&
4166 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4167 /* server-close: terminate this server connection and
4168 * reinitialize a fresh-new transaction.
4169 */
4170 http_end_txn_clean_session(s);
4171 }
4172
4173 http_silent_debug(__LINE__, s);
4174 return txn->req.msg_state != old_req_state ||
4175 txn->rsp.msg_state != old_res_state;
4176}
4177
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4178/* This function is an analyser which forwards request body (including chunk
4179 * sizes if any). It is called as soon as we must forward, even if we forward
4180 * zero byte. The only situation where it must not be called is when we're in
4181 * tunnel mode and we want to forward till the close. It's used both to forward
4182 * remaining data and to resync after end of body. It expects the msg_state to
4183 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4184 * 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]4185 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4186 * bytes of pending data + the headers if not already done (between sol and sov).
4187 * 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]4188 */
4189int http_request_forward_body(struct session *s, struct buffer *req, int an_bit)
4190{
4191 struct http_txn *txn = &s->txn;
4192 struct http_msg *msg = &s->txn.req;
4193
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4194 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4195 return 0;
4196
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]4197 if ((req->flags & (BF_READ_ERROR|BF_READ_TIMEOUT|BF_WRITE_ERROR|BF_WRITE_TIMEOUT)) ||
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]4198 ((req->flags & BF_SHUTW) && (req->to_forward || req->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4199 /* Output closed while we were sending data. We must abort and
4200 * wake the other side up.
4201 */
4202 msg->msg_state = HTTP_MSG_ERROR;
4203 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4204 return 1;
4205 }
4206
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4207 /* in most states, we should abort in case of early close */
4208 buffer_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4209
4210 /* Note that we don't have to send 100-continue back because we don't
4211 * need the data to complete our job, and it's up to the server to
4212 * decide whether to return 100, 417 or anything else in return of
4213 * an "Expect: 100-continue" header.
4214 */
4215
4216 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4217 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4218 * req->p still points to the beginning of the message and msg->sol
4219 * is still null. We must save the body in msg->next because it
4220 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4221 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4222 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4223
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4224 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4225 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4226 else {
4227 msg->msg_state = HTTP_MSG_DATA;
4228 }
4229 }
4230
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4231 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4232 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4233
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4234 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4235 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4236 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4237 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4238 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4239 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4240 msg->chunk_len += bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4241 msg->chunk_len -= buffer_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4242 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4243
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4244 if (msg->msg_state == HTTP_MSG_DATA) {
4245 /* must still forward */
4246 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4247 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4248
4249 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4250 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4251 msg->msg_state = HTTP_MSG_DATA_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4252 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4253 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4254 }
4255 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4256 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4257 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4258 * TRAILERS state.
4259 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4260 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4261
4262 if (!ret)
4263 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4264 else if (ret < 0) {
4265 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4266 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4267 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]4268 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4269 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4270 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4271 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4272 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
4273 /* we want the CRLF after the data */
4274 int ret;
4275
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4276 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4277
4278 if (ret == 0)
4279 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4280 else if (ret < 0) {
4281 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4282 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4283 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_DATA_CRLF, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4284 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4285 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4286 /* we're in MSG_CHUNK_SIZE now */
4287 }
4288 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4289 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4290
4291 if (ret == 0)
4292 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4293 else if (ret < 0) {
4294 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4295 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4296 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]4297 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4298 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4299 /* we're in HTTP_MSG_DONE now */
4300 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4301 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4302 int old_state = msg->msg_state;
4303
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4304 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4305 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4306 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4307 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
4308 buffer_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4309 if (http_resync_states(s)) {
4310 /* some state changes occurred, maybe the analyser
4311 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4312 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4313 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4314 if (req->flags & BF_SHUTW) {
4315 /* request errors are most likely due to
4316 * the server aborting the transfer.
4317 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4318 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4319 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4320 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4321 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4322 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4323 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4324 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4325 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4326
4327 /* If "option abortonclose" is set on the backend, we
4328 * want to monitor the client's connection and forward
4329 * any shutdown notification to the server, which will
4330 * decide whether to close or to go on processing the
4331 * request.
4332 */
4333 if (s->be->options & PR_O_ABRT_CLOSE) {
4334 buffer_auto_read(req);
4335 buffer_auto_close(req);
4336 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4337 else if (s->txn.meth == HTTP_METH_POST) {
4338 /* POST requests may require to read extra CRLF
4339 * sent by broken browsers and which could cause
4340 * an RST to be sent upon close on some systems
4341 * (eg: Linux).
4342 */
4343 buffer_auto_read(req);
4344 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4345
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4346 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4347 }
4348 }
4349
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4350 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4351 /* stop waiting for data if the input is closed before the end */
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4352 if (req->flags & BF_SHUTR) {
4353 if (!(s->flags & SN_ERR_MASK))
4354 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4355 if (!(s->flags & SN_FINST_MASK)) {
4356 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4357 s->flags |= SN_FINST_H;
4358 else
4359 s->flags |= SN_FINST_D;
4360 }
4361
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4362 s->fe->fe_counters.cli_aborts++;
4363 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4364 if (target_srv(&s->target))
4365 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4366
4367 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4368 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4369
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4370 /* waiting for the last bits to leave the buffer */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4371 if (req->flags & BF_SHUTW)
4372 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4373
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4374 /* When TE: chunked is used, we need to get there again to parse remaining
4375 * chunks even if the client has closed, so we don't want to set BF_DONTCLOSE.
4376 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4377 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4378 buffer_dont_close(req);
4379
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4380 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]4381 * what we did. So we always set the BF_EXPECT_MORE flag so that the
4382 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4383 * modes are already handled by the stream sock layer. We must not do
4384 * this in content-length mode because it could present the MSG_MORE
4385 * flag with the last block of forwarded data, which would cause an
4386 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4387 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4388 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4389 req->flags |= BF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4390
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4391 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4392 return 0;
4393
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4394 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4395 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4396 if (s->listener->counters)
4397 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4398 return_bad_req_stats_ok:
4399 txn->req.msg_state = HTTP_MSG_ERROR;
4400 if (txn->status) {
4401 /* Note: we don't send any error if some data were already sent */
4402 stream_int_retnclose(req->prod, NULL);
4403 } else {
4404 txn->status = 400;
4405 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
4406 }
4407 req->analysers = 0;
4408 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]4409
4410 if (!(s->flags & SN_ERR_MASK))
4411 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4412 if (!(s->flags & SN_FINST_MASK)) {
4413 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4414 s->flags |= SN_FINST_H;
4415 else
4416 s->flags |= SN_FINST_D;
4417 }
4418 return 0;
4419
4420 aborted_xfer:
4421 txn->req.msg_state = HTTP_MSG_ERROR;
4422 if (txn->status) {
4423 /* Note: we don't send any error if some data were already sent */
4424 stream_int_retnclose(req->prod, NULL);
4425 } else {
4426 txn->status = 502;
4427 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_502));
4428 }
4429 req->analysers = 0;
4430 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4431
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4432 s->fe->fe_counters.srv_aborts++;
4433 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4434 if (target_srv(&s->target))
4435 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4436
4437 if (!(s->flags & SN_ERR_MASK))
4438 s->flags |= SN_ERR_SRVCL;
4439 if (!(s->flags & SN_FINST_MASK)) {
4440 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4441 s->flags |= SN_FINST_H;
4442 else
4443 s->flags |= SN_FINST_D;
4444 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4445 return 0;
4446}
4447
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4448/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4449 * processing can continue on next analysers, or zero if it either needs more
4450 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4451 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4452 * when it has nothing left to do, and may remove any analyser when it wants to
4453 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4454 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4455int http_wait_for_response(struct session *s, struct buffer *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4456{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4457 struct http_txn *txn = &s->txn;
4458 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4459 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4460 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4461 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4462 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4463
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4464 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]4465 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4466 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4467 rep,
4468 rep->rex, rep->wex,
4469 rep->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4470 rep->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4471 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4472
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4473 /*
4474 * Now parse the partial (or complete) lines.
4475 * We will check the response syntax, and also join multi-line
4476 * headers. An index of all the lines will be elaborated while
4477 * parsing.
4478 *
4479 * For the parsing, we use a 28 states FSM.
4480 *
4481 * Here is the information we currently have :
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4482 * rep->p = beginning of response
4483 * rep->p + msg->eoh = end of processed headers / start of current one
4484 * rep->p + rep->i = end of input data
4485 * msg->eol = end of current header or line (LF or CRLF)
4486 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4487 */
4488
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4489 /* There's a protected area at the end of the buffer for rewriting
4490 * purposes. We don't want to start to parse the request if the
4491 * protected area is affected, because we may have to move processed
4492 * data later, which is much more complicated.
4493 */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4494 if (buffer_not_empty(rep) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4495 if (unlikely((rep->flags & BF_FULL) ||
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]4496 bi_end(rep) < b_ptr(rep, msg->next) ||
4497 bi_end(rep) > rep->data + rep->size - global.tune.maxrewrite)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]4498 if (rep->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4499 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4500 if (rep->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
4501 goto abort_response;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4502 buffer_dont_close(rep);
4503 rep->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
4504 return 0;
4505 }
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4506 if (rep->i <= rep->size - global.tune.maxrewrite)
Willy Tarreaua7fe8e52012-05-08 20:40:09 +0200[diff] [blame]4507 buffer_slow_realign(msg->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4508 }
4509
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4510 if (likely(msg->next < rep->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4511 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4512 }
4513
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4514 /* 1: we might have to print this header in debug mode */
4515 if (unlikely((global.mode & MODE_DEBUG) &&
4516 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4517 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4518 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4519
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4520 sol = rep->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]4521 eol = sol + msg->sl.st.l;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4522 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4523
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4524 sol += hdr_idx_first_pos(&txn->hdr_idx);
4525 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4526
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4527 while (cur_idx) {
4528 eol = sol + txn->hdr_idx.v[cur_idx].len;
4529 debug_hdr("srvhdr", s, sol, eol);
4530 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4531 cur_idx = txn->hdr_idx.v[cur_idx].next;
4532 }
4533 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4534
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4535 /*
4536 * Now we quickly check if we have found a full valid response.
4537 * If not so, we check the FD and buffer states before leaving.
4538 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4539 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4540 * responses are checked first.
4541 *
4542 * Depending on whether the client is still there or not, we
4543 * may send an error response back or not. Note that normally
4544 * we should only check for HTTP status there, and check I/O
4545 * errors somewhere else.
4546 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4547
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4548 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4549 /* Invalid response */
4550 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4551 /* we detected a parsing error. We want to archive this response
4552 * in the dedicated proxy area for later troubleshooting.
4553 */
4554 hdr_response_bad:
4555 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4556 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]4557
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4558 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4559 if (target_srv(&s->target)) {
4560 target_srv(&s->target)->counters.failed_resp++;
4561 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4562 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4563 abort_response:
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4564 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4565 rep->analysers = 0;
4566 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4567 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4568 bi_erase(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4569 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
4570
4571 if (!(s->flags & SN_ERR_MASK))
4572 s->flags |= SN_ERR_PRXCOND;
4573 if (!(s->flags & SN_FINST_MASK))
4574 s->flags |= SN_FINST_H;
4575
4576 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4577 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4578
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4579 /* too large response does not fit in buffer. */
4580 else if (rep->flags & BF_FULL) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4581 if (msg->err_pos < 0)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4582 msg->err_pos = rep->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4583 goto hdr_response_bad;
4584 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4585
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4586 /* read error */
4587 else if (rep->flags & BF_READ_ERROR) {
4588 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4589 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]4590
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4591 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4592 if (target_srv(&s->target)) {
4593 target_srv(&s->target)->counters.failed_resp++;
4594 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4595 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4596
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4597 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4598 rep->analysers = 0;
4599 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4600 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4601 bi_erase(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4602 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4603
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4604 if (!(s->flags & SN_ERR_MASK))
4605 s->flags |= SN_ERR_SRVCL;
4606 if (!(s->flags & SN_FINST_MASK))
4607 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4608 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4609 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4610
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4611 /* read timeout : return a 504 to the client. */
4612 else if (rep->flags & BF_READ_TIMEOUT) {
4613 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4614 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]4615
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4616 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4617 if (target_srv(&s->target)) {
4618 target_srv(&s->target)->counters.failed_resp++;
4619 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4620 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4621
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4622 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4623 rep->analysers = 0;
4624 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4625 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4626 bi_erase(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4627 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4628
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4629 if (!(s->flags & SN_ERR_MASK))
4630 s->flags |= SN_ERR_SRVTO;
4631 if (!(s->flags & SN_FINST_MASK))
4632 s->flags |= SN_FINST_H;
4633 return 0;
4634 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4635
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4636 /* close from server, capture the response if the server has started to respond */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4637 else if (rep->flags & BF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4638 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4639 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]4640
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4641 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4642 if (target_srv(&s->target)) {
4643 target_srv(&s->target)->counters.failed_resp++;
4644 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4645 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4646
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4647 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4648 rep->analysers = 0;
4649 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4650 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4651 bi_erase(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4652 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4653
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4654 if (!(s->flags & SN_ERR_MASK))
4655 s->flags |= SN_ERR_SRVCL;
4656 if (!(s->flags & SN_FINST_MASK))
4657 s->flags |= SN_FINST_H;
4658 return 0;
4659 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4660
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4661 /* write error to client (we don't send any message then) */
4662 else if (rep->flags & BF_WRITE_ERROR) {
4663 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4664 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]4665
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4666 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4667 rep->analysers = 0;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4668 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4669
4670 if (!(s->flags & SN_ERR_MASK))
4671 s->flags |= SN_ERR_CLICL;
4672 if (!(s->flags & SN_FINST_MASK))
4673 s->flags |= SN_FINST_H;
4674
4675 /* process_session() will take care of the error */
4676 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4677 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4678
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4679 buffer_dont_close(rep);
4680 return 0;
4681 }
4682
4683 /* More interesting part now : we know that we have a complete
4684 * response which at least looks like HTTP. We have an indicator
4685 * of each header's length, so we can parse them quickly.
4686 */
4687
4688 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4689 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]4690
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4691 /*
4692 * 1: get the status code
4693 */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]4694 n = rep->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4695 if (n < 1 || n > 5)
4696 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4697 /* when the client triggers a 4xx from the server, it's most often due
4698 * to a missing object or permission. These events should be tracked
4699 * because if they happen often, it may indicate a brute force or a
4700 * vulnerability scan.
4701 */
4702 if (n == 4)
4703 session_inc_http_err_ctr(s);
4704
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4705 if (target_srv(&s->target))
4706 target_srv(&s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4707
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4708 /* check if the response is HTTP/1.1 or above */
4709 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]4710 ((rep->p[5] > '1') ||
4711 ((rep->p[5] == '1') && (rep->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4712 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4713
4714 /* "connection" has not been parsed yet */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4715 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4716
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4717 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4718 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4719
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]4720 txn->status = strl2ui(rep->p + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4721
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]4722 /* Adjust server's health based on status code. Note: status codes 501
4723 * and 505 are triggered on demand by client request, so we must not
4724 * count them as server failures.
4725 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4726 if (target_srv(&s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4727 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4728 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4729 else
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4730 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4731 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4732
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4733 /*
4734 * 2: check for cacheability.
4735 */
4736
4737 switch (txn->status) {
4738 case 200:
4739 case 203:
4740 case 206:
4741 case 300:
4742 case 301:
4743 case 410:
4744 /* RFC2616 @13.4:
4745 * "A response received with a status code of
4746 * 200, 203, 206, 300, 301 or 410 MAY be stored
4747 * by a cache (...) unless a cache-control
4748 * directive prohibits caching."
4749 *
4750 * RFC2616 @9.5: POST method :
4751 * "Responses to this method are not cacheable,
4752 * unless the response includes appropriate
4753 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4754 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4755 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]4756 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4757 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
4758 break;
4759 default:
4760 break;
4761 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4762
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4763 /*
4764 * 3: we may need to capture headers
4765 */
4766 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]4767 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]4768 capture_headers(rep->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4769 txn->rsp.cap, s->fe->rsp_cap);
4770
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4771 /* 4: determine the transfer-length.
4772 * According to RFC2616 #4.4, amended by the HTTPbis working group,
4773 * the presence of a message-body in a RESPONSE and its transfer length
4774 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4775 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4776 * All responses to the HEAD request method MUST NOT include a
4777 * message-body, even though the presence of entity-header fields
4778 * might lead one to believe they do. All 1xx (informational), 204
4779 * (No Content), and 304 (Not Modified) responses MUST NOT include a
4780 * message-body. All other responses do include a message-body,
4781 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4782 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4783 * 1. Any response which "MUST NOT" include a message-body (such as the
4784 * 1xx, 204 and 304 responses and any response to a HEAD request) is
4785 * always terminated by the first empty line after the header fields,
4786 * regardless of the entity-header fields present in the message.
4787 *
4788 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
4789 * the "chunked" transfer-coding (Section 6.2) is used, the
4790 * transfer-length is defined by the use of this transfer-coding.
4791 * If a Transfer-Encoding header field is present and the "chunked"
4792 * transfer-coding is not present, the transfer-length is defined by
4793 * the sender closing the connection.
4794 *
4795 * 3. If a Content-Length header field is present, its decimal value in
4796 * OCTETs represents both the entity-length and the transfer-length.
4797 * If a message is received with both a Transfer-Encoding header
4798 * field and a Content-Length header field, the latter MUST be ignored.
4799 *
4800 * 4. If the message uses the media type "multipart/byteranges", and
4801 * the transfer-length is not otherwise specified, then this self-
4802 * delimiting media type defines the transfer-length. This media
4803 * type MUST NOT be used unless the sender knows that the recipient
4804 * can parse it; the presence in a request of a Range header with
4805 * multiple byte-range specifiers from a 1.1 client implies that the
4806 * client can parse multipart/byteranges responses.
4807 *
4808 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4809 */
4810
4811 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4812 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4813 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4814 * FIXME: should we parse anyway and return an error on chunked encoding ?
4815 */
4816 if (txn->meth == HTTP_METH_HEAD ||
4817 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4818 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4819 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4820 goto skip_content_length;
4821 }
4822
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4823 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4824 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4825 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]4826 http_find_header2("Transfer-Encoding", 17, rep->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4827 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4828 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
4829 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4830 /* bad transfer-encoding (chunked followed by something else) */
4831 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4832 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4833 break;
4834 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4835 }
4836
4837 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
4838 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4839 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]4840 http_find_header2("Content-Length", 14, rep->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4841 signed long long cl;
4842
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4843 if (!ctx.vlen) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]4844 msg->err_pos = ctx.line + ctx.val - rep->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4845 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4846 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4847
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4848 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]4849 msg->err_pos = ctx.line + ctx.val - rep->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4850 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4851 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4852
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4853 if (cl < 0) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]4854 msg->err_pos = ctx.line + ctx.val - rep->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4855 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4856 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4857
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4858 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]4859 msg->err_pos = ctx.line + ctx.val - rep->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4860 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4861 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4862
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4863 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4864 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4865 }
4866
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4867 /* FIXME: we should also implement the multipart/byterange method.
4868 * For now on, we resort to close mode in this case (unknown length).
4869 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4870skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4871
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4872 /* end of job, return OK */
4873 rep->analysers &= ~an_bit;
4874 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4875 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4876 return 1;
4877}
4878
4879/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]4880 * It normally returns 1 unless it wants to break. It relies on buffers flags,
4881 * and updates t->rep->analysers. It might make sense to explode it into several
4882 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4883 */
4884int http_process_res_common(struct session *t, struct buffer *rep, int an_bit, struct proxy *px)
4885{
4886 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4887 struct http_msg *msg = &txn->rsp;
4888 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4889 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4890
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4891 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]4892 now_ms, __FUNCTION__,
4893 t,
4894 rep,
4895 rep->rex, rep->wex,
4896 rep->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4897 rep->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4898 rep->analysers);
4899
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4900 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4901 return 0;
4902
4903 rep->analysers &= ~an_bit;
4904 rep->analyse_exp = TICK_ETERNITY;
4905
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4906 /* Now we have to check if we need to modify the Connection header.
4907 * This is more difficult on the response than it is on the request,
4908 * because we can have two different HTTP versions and we don't know
4909 * how the client will interprete a response. For instance, let's say
4910 * that the client sends a keep-alive request in HTTP/1.0 and gets an
4911 * HTTP/1.1 response without any header. Maybe it will bound itself to
4912 * HTTP/1.0 because it only knows about it, and will consider the lack
4913 * of header as a close, or maybe it knows HTTP/1.1 and can consider
4914 * the lack of header as a keep-alive. Thus we will use two flags
4915 * indicating how a request MAY be understood by the client. In case
4916 * of multiple possibilities, we'll fix the header to be explicit. If
4917 * ambiguous cases such as both close and keepalive are seen, then we
4918 * will fall back to explicit close. Note that we won't take risks with
4919 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4920 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4921 */
4922
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]4923 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
4924 txn->status == 101)) {
4925 /* Either we've established an explicit tunnel, or we're
4926 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]4927 * to understand the next protocols. We have to switch to tunnel
4928 * mode, so that we transfer the request and responses then let
4929 * this protocol pass unmodified. When we later implement specific
4930 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]4931 * header which contains information about that protocol for
4932 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]4933 */
4934 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
4935 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]4936 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
4937 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
4938 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4939 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4940
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4941 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4942 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4943 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
4944 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4945
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4946 /* now adjust header transformations depending on current state */
4947 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
4948 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4949 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4950 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4951 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4952 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4953 else { /* SCL / KAL */
4954 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4955 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4956 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4957 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4958
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4959 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4960 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4961
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4962 /* Some keep-alive responses are converted to Server-close if
4963 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4964 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4965 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
4966 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4967 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4968 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4969 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4970 }
4971
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4972 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4973 /*
4974 * 3: we will have to evaluate the filters.
4975 * As opposed to version 1.2, now they will be evaluated in the
4976 * filters order and not in the header order. This means that
4977 * each filter has to be validated among all headers.
4978 *
4979 * Filters are tried with ->be first, then with ->fe if it is
4980 * different from ->be.
4981 */
4982
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4983 cur_proxy = t->be;
4984 while (1) {
4985 struct proxy *rule_set = cur_proxy;
4986
4987 /* try headers filters */
4988 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]4989 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4990 return_bad_resp:
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4991 if (target_srv(&t->target)) {
4992 target_srv(&t->target)->counters.failed_resp++;
4993 health_adjust(target_srv(&t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4994 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4995 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4996 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4997 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4998 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4999 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5000 bi_erase(rep);
Willy Tarreau8e89b842009-10-18 23:56:35 +0200[diff] [blame]5001 stream_int_retnclose(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5002 if (!(t->flags & SN_ERR_MASK))
5003 t->flags |= SN_ERR_PRXCOND;
5004 if (!(t->flags & SN_FINST_MASK))
5005 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5006 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5007 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5008 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5009
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5010 /* has the response been denied ? */
5011 if (txn->flags & TX_SVDENY) {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5012 if (target_srv(&t->target))
5013 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5014
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5015 t->be->be_counters.denied_resp++;
5016 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5017 if (t->listener->counters)
5018 t->listener->counters->denied_resp++;
5019
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5020 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5021 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5022
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5023 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5024 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5025 if (txn->status < 200)
5026 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5027 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5028 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]5029 ret = acl_pass(ret);
5030 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5031 ret = !ret;
5032 if (!ret)
5033 continue;
5034 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5035 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5036 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5037 }
5038
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5039 /* check whether we're already working on the frontend */
5040 if (cur_proxy == t->fe)
5041 break;
5042 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5043 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5044
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5045 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5046 * We may be facing a 100-continue response, in which case this
5047 * is not the right response, and we're waiting for the next one.
5048 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5049 * next one.
5050 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5051 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5052 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]5053 msg->next -= buffer_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5054 msg->msg_state = HTTP_MSG_RPBEFORE;
5055 txn->status = 0;
5056 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5057 return 1;
5058 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5059 else if (unlikely(txn->status < 200))
5060 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5061
5062 /* we don't have any 1xx status code now */
5063
5064 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5065 * 4: check for server cookie.
5066 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5067 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5068 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5069 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5070
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5071
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5072 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5073 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5074 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5075 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]5076 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5077
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5078 /*
5079 * 6: add server cookie in the response if needed
5080 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5081 if (target_srv(&t->target) && (t->be->ck_opts & PR_CK_INS) &&
5082 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5083 (!(t->flags & SN_DIRECT) ||
5084 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5085 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5086 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5087 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5088 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5089 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5090 int len;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5091 /* the server is known, it's not the one the client requested, or the
5092 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5093 * insert a set-cookie here, except if we want to insert only on POST
5094 * requests and this one isn't. Note that servers which don't have cookies
5095 * (eg: some backup servers) will return a full cookie removal request.
5096 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5097 if (!target_srv(&t->target)->cookie) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5098 len = sprintf(trash,
5099 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5100 t->be->cookie_name);
5101 }
5102 else {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5103 len = sprintf(trash, "Set-Cookie: %s=%s", t->be->cookie_name, target_srv(&t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5104
5105 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5106 /* emit last_date, which is mandatory */
5107 trash[len++] = COOKIE_DELIM_DATE;
5108 s30tob64((date.tv_sec+3) >> 2, trash + len); len += 5;
5109 if (t->be->cookie_maxlife) {
5110 /* emit first_date, which is either the original one or
5111 * the current date.
5112 */
5113 trash[len++] = COOKIE_DELIM_DATE;
5114 s30tob64(txn->cookie_first_date ?
5115 txn->cookie_first_date >> 2 :
5116 (date.tv_sec+3) >> 2, trash + len);
5117 len += 5;
5118 }
5119 }
5120 len += sprintf(trash + len, "; path=/");
5121 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5122
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5123 if (t->be->cookie_domain)
5124 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5125
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5126 if (t->be->ck_opts & PR_CK_HTTPONLY)
5127 len += sprintf(trash+len, "; HttpOnly");
5128
5129 if (t->be->ck_opts & PR_CK_SECURE)
5130 len += sprintf(trash+len, "; Secure");
5131
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5132 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash, len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5133 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5134
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5135 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5136 if (target_srv(&t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5137 /* the server did not change, only the date was updated */
5138 txn->flags |= TX_SCK_UPDATED;
5139 else
5140 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5141
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5142 /* Here, we will tell an eventual cache on the client side that we don't
5143 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5144 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5145 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5146 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5147 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5148
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5149 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5150
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5151 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5152 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5153 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5154 }
5155 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5156
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5157 /*
5158 * 7: check if result will be cacheable with a cookie.
5159 * We'll block the response if security checks have caught
5160 * nasty things such as a cacheable cookie.
5161 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5162 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5163 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5164 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5165
5166 /* we're in presence of a cacheable response containing
5167 * a set-cookie header. We'll block it as requested by
5168 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5169 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5170 if (target_srv(&t->target))
5171 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5172
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5173 t->be->be_counters.denied_resp++;
5174 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5175 if (t->listener->counters)
5176 t->listener->counters->denied_resp++;
5177
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5178 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5179 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5180 send_log(t->be, LOG_ALERT,
5181 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5182 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5183 goto return_srv_prx_502;
5184 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5185
5186 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5187 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5188 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5189 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5190 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE)) {
5191 unsigned int want_flags = 0;
5192
5193 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5194 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5195 /* we want a keep-alive response here. Keep-alive header
5196 * required if either side is not 1.1.
5197 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5198 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5199 want_flags |= TX_CON_KAL_SET;
5200 }
5201 else {
5202 /* we want a close response here. Close header required if
5203 * the server is 1.1, regardless of the client.
5204 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5205 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5206 want_flags |= TX_CON_CLO_SET;
5207 }
5208
5209 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5210 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5211 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5212
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5213 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5214 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5215 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5216 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5217
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5218 /*************************************************************
5219 * OK, that's finished for the headers. We have done what we *
5220 * could. Let's switch to the DATA state. *
5221 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5222
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5223 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5224
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5225 /* if the user wants to log as soon as possible, without counting
5226 * bytes from the server, then this is the right moment. We have
5227 * to temporarily assign bytes_out to log what we currently have.
5228 */
5229 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5230 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5231 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5232 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5233 t->logs.bytes_out = 0;
5234 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5235
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5236 /* Note: we must not try to cheat by jumping directly to DATA,
5237 * otherwise we would not let the client side wake up.
5238 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5239
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5240 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5241 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5242 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5243}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5244
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5245/* This function is an analyser which forwards response body (including chunk
5246 * sizes if any). It is called as soon as we must forward, even if we forward
5247 * zero byte. The only situation where it must not be called is when we're in
5248 * tunnel mode and we want to forward till the close. It's used both to forward
5249 * remaining data and to resync after end of body. It expects the msg_state to
5250 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5251 * 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]5252 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5253 * bytes of pending data + the headers if not already done (between sol and sov).
5254 * 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]5255 */
5256int http_response_forward_body(struct session *s, struct buffer *res, int an_bit)
5257{
5258 struct http_txn *txn = &s->txn;
5259 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5260 unsigned int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5261
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5262 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5263 return 0;
5264
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5265 if ((res->flags & (BF_READ_ERROR|BF_READ_TIMEOUT|BF_WRITE_ERROR|BF_WRITE_TIMEOUT)) ||
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]5266 ((res->flags & BF_SHUTW) && (res->to_forward || res->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5267 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5268 /* Output closed while we were sending data. We must abort and
5269 * wake the other side up.
5270 */
5271 msg->msg_state = HTTP_MSG_ERROR;
5272 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5273 return 1;
5274 }
5275
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5276 /* in most states, we should abort in case of early close */
5277 buffer_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5278
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5279 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5280 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5281 * rep->p still points to the beginning of the message and msg->sol
5282 * is still null. We must save the body in msg->next because it
5283 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5284 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]5285 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5286
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5287 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5288 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5289 else {
5290 msg->msg_state = HTTP_MSG_DATA;
5291 }
5292 }
5293
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5294 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5295 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5296 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5297 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5298 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5299 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5300 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5301 msg->chunk_len += bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5302 msg->chunk_len -= buffer_forward(res, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5303 }
5304
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5305 if (msg->msg_state == HTTP_MSG_DATA) {
5306 /* must still forward */
5307 if (res->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5308 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5309
5310 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5311 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5312 msg->msg_state = HTTP_MSG_DATA_CRLF;
5313 else
5314 msg->msg_state = HTTP_MSG_DONE;
5315 }
5316 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5317 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5318 * set ->sov and ->next to point to the body and switch to DATA or
5319 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5320 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5321 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5322
5323 if (!ret)
5324 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5325 else if (ret < 0) {
5326 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5327 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]5328 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5329 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5330 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5331 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5332 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
5333 /* we want the CRLF after the data */
5334 int ret;
5335
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5336 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5337
5338 if (!ret)
5339 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5340 else if (ret < 0) {
5341 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5342 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_DATA_CRLF, s->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5343 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5344 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5345 /* we're in MSG_CHUNK_SIZE now */
5346 }
5347 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5348 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5349
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5350 if (ret == 0)
5351 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5352 else if (ret < 0) {
5353 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5354 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]5355 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5356 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5357 /* we're in HTTP_MSG_DONE now */
5358 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5359 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5360 int old_state = msg->msg_state;
5361
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5362 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5363 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5364 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5365 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
5366 buffer_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5367 if (http_resync_states(s)) {
5368 http_silent_debug(__LINE__, s);
5369 /* some state changes occurred, maybe the analyser
5370 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5371 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5372 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5373 if (res->flags & BF_SHUTW) {
5374 /* response errors are most likely due to
5375 * the client aborting the transfer.
5376 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5377 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5378 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5379 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5380 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5381 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5382 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5383 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5384 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5385 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5386 }
5387 }
5388
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5389 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5390 /* stop waiting for data if the input is closed before the end */
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5391 if (res->flags & BF_SHUTR) {
5392 if (!(s->flags & SN_ERR_MASK))
5393 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5394 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5395 if (target_srv(&s->target))
5396 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5397 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5398 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5399
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5400 if (res->flags & BF_SHUTW)
5401 goto aborted_xfer;
5402
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5403 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5404 if (!s->req->analysers)
5405 goto return_bad_res;
5406
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5407 /* forward any data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5408 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5409 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5410 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5411 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5412 msg->chunk_len += bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5413 msg->chunk_len -= buffer_forward(res, msg->chunk_len);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5414 }
5415
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5416 /* When TE: chunked is used, we need to get there again to parse remaining
5417 * chunks even if the server has closed, so we don't want to set BF_DONTCLOSE.
5418 * Similarly, with keep-alive on the client side, we don't want to forward a
5419 * close.
5420 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5421 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5422 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5423 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
5424 buffer_dont_close(res);
5425
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5426 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]5427 * what we did. So we always set the BF_EXPECT_MORE flag so that the
5428 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5429 * modes are already handled by the stream sock layer. We must not do
5430 * this in content-length mode because it could present the MSG_MORE
5431 * flag with the last block of forwarded data, which would cause an
5432 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5433 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5434 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5435 res->flags |= BF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5436
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5437 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5438 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5439 return 0;
5440
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5441 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5442 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5443 if (target_srv(&s->target))
5444 target_srv(&s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5445
5446 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5447 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5448 /* don't send any error message as we're in the body */
5449 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5450 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5451 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5452 if (target_srv(&s->target))
5453 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5454
5455 if (!(s->flags & SN_ERR_MASK))
5456 s->flags |= SN_ERR_PRXCOND;
5457 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5458 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5459 return 0;
5460
5461 aborted_xfer:
5462 txn->rsp.msg_state = HTTP_MSG_ERROR;
5463 /* don't send any error message as we're in the body */
5464 stream_int_retnclose(res->cons, NULL);
5465 res->analysers = 0;
5466 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5467
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5468 s->fe->fe_counters.cli_aborts++;
5469 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5470 if (target_srv(&s->target))
5471 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5472
5473 if (!(s->flags & SN_ERR_MASK))
5474 s->flags |= SN_ERR_CLICL;
5475 if (!(s->flags & SN_FINST_MASK))
5476 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5477 return 0;
5478}
5479
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5480/* Iterate the same filter through all request headers.
5481 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5482 * Since it can manage the switch to another backend, it updates the per-proxy
5483 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5484 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5485int apply_filter_to_req_headers(struct session *t, struct buffer *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5486{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5487 char term;
5488 char *cur_ptr, *cur_end, *cur_next;
5489 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5490 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5491 struct hdr_idx_elem *cur_hdr;
5492 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5493
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5494 last_hdr = 0;
5495
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]5496 cur_next = req->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5497 old_idx = 0;
5498
5499 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5500 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5501 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5502 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5503 (exp->action == ACT_ALLOW ||
5504 exp->action == ACT_DENY ||
5505 exp->action == ACT_TARPIT))
5506 return 0;
5507
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5508 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5509 if (!cur_idx)
5510 break;
5511
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5512 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5513 cur_ptr = cur_next;
5514 cur_end = cur_ptr + cur_hdr->len;
5515 cur_next = cur_end + cur_hdr->cr + 1;
5516
5517 /* Now we have one header between cur_ptr and cur_end,
5518 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5519 */
5520
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5521 /* The annoying part is that pattern matching needs
5522 * that we modify the contents to null-terminate all
5523 * strings before testing them.
5524 */
5525
5526 term = *cur_end;
5527 *cur_end = '\0';
5528
5529 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5530 switch (exp->action) {
5531 case ACT_SETBE:
5532 /* It is not possible to jump a second time.
5533 * FIXME: should we return an HTTP/500 here so that
5534 * the admin knows there's a problem ?
5535 */
5536 if (t->be != t->fe)
5537 break;
5538
5539 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5540 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5541 last_hdr = 1;
5542 break;
5543
5544 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5545 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5546 last_hdr = 1;
5547 break;
5548
5549 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5550 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5551 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5552
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5553 t->fe->fe_counters.denied_req++;
5554 if (t->fe != t->be)
5555 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5556 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5557 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5559 break;
5560
5561 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5562 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5563 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5564
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5565 t->fe->fe_counters.denied_req++;
5566 if (t->fe != t->be)
5567 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5568 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5569 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5570
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5571 break;
5572
5573 case ACT_REPLACE:
5574 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
5575 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
5576 /* FIXME: if the user adds a newline in the replacement, the
5577 * index will not be recalculated for now, and the new line
5578 * will not be counted as a new header.
5579 */
5580
5581 cur_end += delta;
5582 cur_next += delta;
5583 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5584 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5585 break;
5586
5587 case ACT_REMOVE:
5588 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
5589 cur_next += delta;
5590
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5591 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5592 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5593 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5594 cur_hdr->len = 0;
5595 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5596 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5597 break;
5598
5599 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5600 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5601 if (cur_end)
5602 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5603
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5604 /* keep the link from this header to next one in case of later
5605 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5606 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5607 old_idx = cur_idx;
5608 }
5609 return 0;
5610}
5611
5612
5613/* Apply the filter to the request line.
5614 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5615 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5616 * Since it can manage the switch to another backend, it updates the per-proxy
5617 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5618 */
5619int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
5620{
5621 char term;
5622 char *cur_ptr, *cur_end;
5623 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5624 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5625 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5626
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5627
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5628 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5629 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5630 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5631 (exp->action == ACT_ALLOW ||
5632 exp->action == ACT_DENY ||
5633 exp->action == ACT_TARPIT))
5634 return 0;
5635 else if (exp->action == ACT_REMOVE)
5636 return 0;
5637
5638 done = 0;
5639
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]5640 cur_ptr = req->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5641 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5642
5643 /* Now we have the request line between cur_ptr and cur_end */
5644
5645 /* The annoying part is that pattern matching needs
5646 * that we modify the contents to null-terminate all
5647 * strings before testing them.
5648 */
5649
5650 term = *cur_end;
5651 *cur_end = '\0';
5652
5653 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5654 switch (exp->action) {
5655 case ACT_SETBE:
5656 /* It is not possible to jump a second time.
5657 * FIXME: should we return an HTTP/500 here so that
5658 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5659 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5660 if (t->be != t->fe)
5661 break;
5662
5663 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5664 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5665 done = 1;
5666 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5667
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5668 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5669 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5670 done = 1;
5671 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5672
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5673 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5674 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5675
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5676 t->fe->fe_counters.denied_req++;
5677 if (t->fe != t->be)
5678 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5679 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5680 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5681
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5682 done = 1;
5683 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5684
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5685 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5686 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5687
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5688 t->fe->fe_counters.denied_req++;
5689 if (t->fe != t->be)
5690 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5691 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5692 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5693
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5694 done = 1;
5695 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5696
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5697 case ACT_REPLACE:
5698 *cur_end = term; /* restore the string terminator */
5699 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
5700 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
5701 /* FIXME: if the user adds a newline in the replacement, the
5702 * index will not be recalculated for now, and the new line
5703 * will not be counted as a new header.
5704 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5705
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5706 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5707 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]5708 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5709 HTTP_MSG_RQMETH,
5710 cur_ptr, cur_end + 1,
5711 NULL, NULL);
5712 if (unlikely(!cur_end))
5713 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5714
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5715 /* we have a full request and we know that we have either a CR
5716 * or an LF at <ptr>.
5717 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5718 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
5719 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]5720 /* there is no point trying this regex on headers */
5721 return 1;
5722 }
5723 }
5724 *cur_end = term; /* restore the string terminator */
5725 return done;
5726}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]5727
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5728
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5729
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5730/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5731 * 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]5732 * 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]5733 * unparsable request. Since it can manage the switch to another backend, it
5734 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5735 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5736int apply_filters_to_request(struct session *s, struct buffer *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5737{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5738 struct http_txn *txn = &s->txn;
5739 struct hdr_exp *exp;
5740
5741 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5742 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5743
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5744 /*
5745 * The interleaving of transformations and verdicts
5746 * makes it difficult to decide to continue or stop
5747 * the evaluation.
5748 */
5749
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5750 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
5751 break;
5752
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5753 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5754 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5755 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5756 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5757
5758 /* if this filter had a condition, evaluate it now and skip to
5759 * next filter if the condition does not match.
5760 */
5761 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5762 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]5763 ret = acl_pass(ret);
5764 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
5765 ret = !ret;
5766
5767 if (!ret)
5768 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5769 }
5770
5771 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5772 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5773 if (unlikely(ret < 0))
5774 return -1;
5775
5776 if (likely(ret == 0)) {
5777 /* The filter did not match the request, it can be
5778 * iterated through all headers.
5779 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5780 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5781 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5782 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5783 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5784}
5785
5786
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5787
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5788/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5789 * Try to retrieve the server associated to the appsession.
5790 * If the server is found, it's assigned to the session.
5791 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5792void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5793 struct http_txn *txn = &t->txn;
5794 appsess *asession = NULL;
5795 char *sessid_temp = NULL;
5796
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5797 if (len > t->be->appsession_len) {
5798 len = t->be->appsession_len;
5799 }
5800
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5801 if (t->be->options2 & PR_O2_AS_REQL) {
5802 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5803 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5804 /* 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]5805 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5806 }
5807
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5808 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5809 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5810 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5811 return;
5812 }
5813
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5814 memcpy(txn->sessid, buf, len);
5815 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5816 }
5817
5818 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
5819 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5820 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5821 return;
5822 }
5823
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5824 memcpy(sessid_temp, buf, len);
5825 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5826
5827 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
5828 /* free previously allocated memory */
5829 pool_free2(apools.sessid, sessid_temp);
5830
5831 if (asession != NULL) {
5832 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
5833 if (!(t->be->options2 & PR_O2_AS_REQL))
5834 asession->request_count++;
5835
5836 if (asession->serverid != NULL) {
5837 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5838
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5839 while (srv) {
5840 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]5841 if ((srv->state & SRV_RUNNING) ||
5842 (t->be->options & PR_O_PERSIST) ||
5843 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5844 /* we found the server and it's usable */
5845 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]5846 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5847 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]5848 set_target_server(&t->target, srv);
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]5849
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5850 break;
5851 } else {
5852 txn->flags &= ~TX_CK_MASK;
5853 txn->flags |= TX_CK_DOWN;
5854 }
5855 }
5856 srv = srv->next;
5857 }
5858 }
5859 }
5860}
5861
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5862/* Find the end of a cookie value contained between <s> and <e>. It works the
5863 * same way as with headers above except that the semi-colon also ends a token.
5864 * See RFC2965 for more information. Note that it requires a valid header to
5865 * return a valid result.
5866 */
5867char *find_cookie_value_end(char *s, const char *e)
5868{
5869 int quoted, qdpair;
5870
5871 quoted = qdpair = 0;
5872 for (; s < e; s++) {
5873 if (qdpair) qdpair = 0;
5874 else if (quoted) {
5875 if (*s == '\\') qdpair = 1;
5876 else if (*s == '"') quoted = 0;
5877 }
5878 else if (*s == '"') quoted = 1;
5879 else if (*s == ',' || *s == ';') return s;
5880 }
5881 return s;
5882}
5883
5884/* Delete a value in a header between delimiters <from> and <next> in buffer
5885 * <buf>. The number of characters displaced is returned, and the pointer to
5886 * the first delimiter is updated if required. The function tries as much as
5887 * possible to respect the following principles :
5888 * - replace <from> delimiter by the <next> one unless <from> points to a
5889 * colon, in which case <next> is simply removed
5890 * - set exactly one space character after the new first delimiter, unless
5891 * there are not enough characters in the block being moved to do so.
5892 * - remove unneeded spaces before the previous delimiter and after the new
5893 * one.
5894 *
5895 * It is the caller's responsibility to ensure that :
5896 * - <from> points to a valid delimiter or the colon ;
5897 * - <next> points to a valid delimiter or the final CR/LF ;
5898 * - there are non-space chars before <from> ;
5899 * - there is a CR/LF at or after <next>.
5900 */
5901int del_hdr_value(struct buffer *buf, char **from, char *next)
5902{
5903 char *prev = *from;
5904
5905 if (*prev == ':') {
5906 /* We're removing the first value, preserve the colon and add a
5907 * space if possible.
5908 */
5909 if (!http_is_crlf[(unsigned char)*next])
5910 next++;
5911 prev++;
5912 if (prev < next)
5913 *prev++ = ' ';
5914
5915 while (http_is_spht[(unsigned char)*next])
5916 next++;
5917 } else {
5918 /* Remove useless spaces before the old delimiter. */
5919 while (http_is_spht[(unsigned char)*(prev-1)])
5920 prev--;
5921 *from = prev;
5922
5923 /* copy the delimiter and if possible a space if we're
5924 * not at the end of the line.
5925 */
5926 if (!http_is_crlf[(unsigned char)*next]) {
5927 *prev++ = *next++;
5928 if (prev + 1 < next)
5929 *prev++ = ' ';
5930 while (http_is_spht[(unsigned char)*next])
5931 next++;
5932 }
5933 }
5934 return buffer_replace2(buf, prev, next, NULL, 0);
5935}
5936
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5937/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]5938 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5939 * desirable to call it only when needed. This code is quite complex because
5940 * of the multiple very crappy and ambiguous syntaxes we have to support. it
5941 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5942 */
5943void manage_client_side_cookies(struct session *t, struct buffer *req)
5944{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5945 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5946 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5947 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5948 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
5949 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5950
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5951 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]5952 old_idx = 0;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]5953 hdr_next = req->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5954
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5955 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5956 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5957 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5958
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5959 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5960 hdr_beg = hdr_next;
5961 hdr_end = hdr_beg + cur_hdr->len;
5962 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5963
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5964 /* We have one full header between hdr_beg and hdr_end, and the
5965 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5966 * "Cookie:" headers.
5967 */
5968
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5969 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5970 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5971 old_idx = cur_idx;
5972 continue;
5973 }
5974
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5975 del_from = NULL; /* nothing to be deleted */
5976 preserve_hdr = 0; /* assume we may kill the whole header */
5977
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5978 /* Now look for cookies. Conforming to RFC2109, we have to support
5979 * attributes whose name begin with a '$', and associate them with
5980 * the right cookie, if we want to delete this cookie.
5981 * So there are 3 cases for each cookie read :
5982 * 1) it's a special attribute, beginning with a '$' : ignore it.
5983 * 2) it's a server id cookie that we *MAY* want to delete : save
5984 * some pointers on it (last semi-colon, beginning of cookie...)
5985 * 3) it's an application cookie : we *MAY* have to delete a previous
5986 * "special" cookie.
5987 * At the end of loop, if a "special" cookie remains, we may have to
5988 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5989 * *MUST* delete it.
5990 *
5991 * Note: RFC2965 is unclear about the processing of spaces around
5992 * the equal sign in the ATTR=VALUE form. A careful inspection of
5993 * the RFC explicitly allows spaces before it, and not within the
5994 * tokens (attrs or values). An inspection of RFC2109 allows that
5995 * too but section 10.1.3 lets one think that spaces may be allowed
5996 * after the equal sign too, resulting in some (rare) buggy
5997 * implementations trying to do that. So let's do what servers do.
5998 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
5999 * allowed quoted strings in values, with any possible character
6000 * after a backslash, including control chars and delimitors, which
6001 * causes parsing to become ambiguous. Browsers also allow spaces
6002 * within values even without quotes.
6003 *
6004 * We have to keep multiple pointers in order to support cookie
6005 * removal at the beginning, middle or end of header without
6006 * corrupting the header. All of these headers are valid :
6007 *
6008 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6009 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6010 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6011 * | | | | | | | | |
6012 * | | | | | | | | hdr_end <--+
6013 * | | | | | | | +--> next
6014 * | | | | | | +----> val_end
6015 * | | | | | +-----------> val_beg
6016 * | | | | +--------------> equal
6017 * | | | +----------------> att_end
6018 * | | +---------------------> att_beg
6019 * | +--------------------------> prev
6020 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6021 */
6022
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6023 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6024 /* Iterate through all cookies on this line */
6025
6026 /* find att_beg */
6027 att_beg = prev + 1;
6028 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6029 att_beg++;
6030
6031 /* find att_end : this is the first character after the last non
6032 * space before the equal. It may be equal to hdr_end.
6033 */
6034 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6035
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6036 while (equal < hdr_end) {
6037 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6038 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6039 if (http_is_spht[(unsigned char)*equal++])
6040 continue;
6041 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6042 }
6043
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6044 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6045 * is between <att_beg> and <equal>, both may be identical.
6046 */
6047
6048 /* look for end of cookie if there is an equal sign */
6049 if (equal < hdr_end && *equal == '=') {
6050 /* look for the beginning of the value */
6051 val_beg = equal + 1;
6052 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6053 val_beg++;
6054
6055 /* find the end of the value, respecting quotes */
6056 next = find_cookie_value_end(val_beg, hdr_end);
6057
6058 /* make val_end point to the first white space or delimitor after the value */
6059 val_end = next;
6060 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6061 val_end--;
6062 } else {
6063 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6064 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6065
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6066 /* We have nothing to do with attributes beginning with '$'. However,
6067 * they will automatically be removed if a header before them is removed,
6068 * since they're supposed to be linked together.
6069 */
6070 if (*att_beg == '$')
6071 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6072
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6073 /* Ignore cookies with no equal sign */
6074 if (equal == next) {
6075 /* This is not our cookie, so we must preserve it. But if we already
6076 * scheduled another cookie for removal, we cannot remove the
6077 * complete header, but we can remove the previous block itself.
6078 */
6079 preserve_hdr = 1;
6080 if (del_from != NULL) {
6081 int delta = del_hdr_value(req, &del_from, prev);
6082 val_end += delta;
6083 next += delta;
6084 hdr_end += delta;
6085 hdr_next += delta;
6086 cur_hdr->len += delta;
6087 http_msg_move_end(&txn->req, delta);
6088 prev = del_from;
6089 del_from = NULL;
6090 }
6091 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6092 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6093
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6094 /* if there are spaces around the equal sign, we need to
6095 * strip them otherwise we'll get trouble for cookie captures,
6096 * or even for rewrites. Since this happens extremely rarely,
6097 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6098 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6099 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6100 int stripped_before = 0;
6101 int stripped_after = 0;
6102
6103 if (att_end != equal) {
6104 stripped_before = buffer_replace2(req, att_end, equal, NULL, 0);
6105 equal += stripped_before;
6106 val_beg += stripped_before;
6107 }
6108
6109 if (val_beg > equal + 1) {
6110 stripped_after = buffer_replace2(req, equal + 1, val_beg, NULL, 0);
6111 val_beg += stripped_after;
6112 stripped_before += stripped_after;
6113 }
6114
6115 val_end += stripped_before;
6116 next += stripped_before;
6117 hdr_end += stripped_before;
6118 hdr_next += stripped_before;
6119 cur_hdr->len += stripped_before;
6120 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6121 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6122 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6123
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6124 /* First, let's see if we want to capture this cookie. We check
6125 * that we don't already have a client side cookie, because we
6126 * can only capture one. Also as an optimisation, we ignore
6127 * cookies shorter than the declared name.
6128 */
6129 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6130 (val_end - att_beg >= t->fe->capture_namelen) &&
6131 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6132 int log_len = val_end - att_beg;
6133
6134 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6135 Alert("HTTP logging : out of memory.\n");
6136 } else {
6137 if (log_len > t->fe->capture_len)
6138 log_len = t->fe->capture_len;
6139 memcpy(txn->cli_cookie, att_beg, log_len);
6140 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6141 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6142 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6143
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6144 /* Persistence cookies in passive, rewrite or insert mode have the
6145 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6146 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6147 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6148 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6149 * For cookies in prefix mode, the form is :
6150 *
6151 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6152 */
6153 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6154 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6155 struct server *srv = t->be->srv;
6156 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6157
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6158 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6159 * have the server ID between val_beg and delim, and the original cookie between
6160 * delim+1 and val_end. Otherwise, delim==val_end :
6161 *
6162 * Cookie: NAME=SRV; # in all but prefix modes
6163 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6164 * | || || | |+-> next
6165 * | || || | +--> val_end
6166 * | || || +---------> delim
6167 * | || |+------------> val_beg
6168 * | || +-------------> att_end = equal
6169 * | |+-----------------> att_beg
6170 * | +------------------> prev
6171 * +-------------------------> hdr_beg
6172 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6173
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6174 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6175 for (delim = val_beg; delim < val_end; delim++)
6176 if (*delim == COOKIE_DELIM)
6177 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6178 } else {
6179 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6180 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6181 /* Now check if the cookie contains a date field, which would
6182 * appear after a vertical bar ('|') just after the server name
6183 * and before the delimiter.
6184 */
6185 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6186 if (vbar1) {
6187 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6188 * right is the last seen date. It is a base64 encoded
6189 * 30-bit value representing the UNIX date since the
6190 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6191 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6192 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6193 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6194 if (val_end - vbar1 >= 5) {
6195 val = b64tos30(vbar1);
6196 if (val > 0)
6197 txn->cookie_last_date = val << 2;
6198 }
6199 /* look for a second vertical bar */
6200 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6201 if (vbar1 && (val_end - vbar1 > 5)) {
6202 val = b64tos30(vbar1 + 1);
6203 if (val > 0)
6204 txn->cookie_first_date = val << 2;
6205 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6206 }
6207 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6208
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6209 /* if the cookie has an expiration date and the proxy wants to check
6210 * it, then we do that now. We first check if the cookie is too old,
6211 * then only if it has expired. We detect strict overflow because the
6212 * time resolution here is not great (4 seconds). Cookies with dates
6213 * in the future are ignored if their offset is beyond one day. This
6214 * allows an admin to fix timezone issues without expiring everyone
6215 * and at the same time avoids keeping unwanted side effects for too
6216 * long.
6217 */
6218 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6219 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6220 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6221 txn->flags &= ~TX_CK_MASK;
6222 txn->flags |= TX_CK_OLD;
6223 delim = val_beg; // let's pretend we have not found the cookie
6224 txn->cookie_first_date = 0;
6225 txn->cookie_last_date = 0;
6226 }
6227 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6228 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6229 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6230 txn->flags &= ~TX_CK_MASK;
6231 txn->flags |= TX_CK_EXPIRED;
6232 delim = val_beg; // let's pretend we have not found the cookie
6233 txn->cookie_first_date = 0;
6234 txn->cookie_last_date = 0;
6235 }
6236
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6237 /* Here, we'll look for the first running server which supports the cookie.
6238 * This allows to share a same cookie between several servers, for example
6239 * to dedicate backup servers to specific servers only.
6240 * However, to prevent clients from sticking to cookie-less backup server
6241 * when they have incidentely learned an empty cookie, we simply ignore
6242 * empty cookies and mark them as invalid.
6243 * The same behaviour is applied when persistence must be ignored.
6244 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6245 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6246 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6247
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6248 while (srv) {
6249 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6250 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6251 if ((srv->state & SRV_RUNNING) ||
6252 (t->be->options & PR_O_PERSIST) ||
6253 (t->flags & SN_FORCE_PRST)) {
6254 /* we found the server and we can use it */
6255 txn->flags &= ~TX_CK_MASK;
6256 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6257 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]6258 set_target_server(&t->target, srv);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6259 break;
6260 } else {
6261 /* we found a server, but it's down,
6262 * mark it as such and go on in case
6263 * another one is available.
6264 */
6265 txn->flags &= ~TX_CK_MASK;
6266 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6267 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6268 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6269 srv = srv->next;
6270 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6271
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6272 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6273 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6274 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6275 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6276 txn->flags |= TX_CK_UNUSED;
6277 else
6278 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6279 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6280
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6281 /* depending on the cookie mode, we may have to either :
6282 * - delete the complete cookie if we're in insert+indirect mode, so that
6283 * the server never sees it ;
6284 * - remove the server id from the cookie value, and tag the cookie as an
6285 * application cookie so that it does not get accidentely removed later,
6286 * if we're in cookie prefix mode
6287 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6288 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6289 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6290
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6291 delta = buffer_replace2(req, val_beg, delim + 1, NULL, 0);
6292 val_end += delta;
6293 next += delta;
6294 hdr_end += delta;
6295 hdr_next += delta;
6296 cur_hdr->len += delta;
6297 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6298
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6299 del_from = NULL;
6300 preserve_hdr = 1; /* we want to keep this cookie */
6301 }
6302 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6303 (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]6304 del_from = prev;
6305 }
6306 } else {
6307 /* This is not our cookie, so we must preserve it. But if we already
6308 * scheduled another cookie for removal, we cannot remove the
6309 * complete header, but we can remove the previous block itself.
6310 */
6311 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6312
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6313 if (del_from != NULL) {
6314 int delta = del_hdr_value(req, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6315 if (att_beg >= del_from)
6316 att_beg += delta;
6317 if (att_end >= del_from)
6318 att_end += delta;
6319 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6320 val_end += delta;
6321 next += delta;
6322 hdr_end += delta;
6323 hdr_next += delta;
6324 cur_hdr->len += delta;
6325 http_msg_move_end(&txn->req, delta);
6326 prev = del_from;
6327 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6328 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6329 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6330
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6331 /* Look for the appsession cookie unless persistence must be ignored */
6332 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6333 int cmp_len, value_len;
6334 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6335
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6336 if (t->be->options2 & PR_O2_AS_PFX) {
6337 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6338 value_begin = att_beg + t->be->appsession_name_len;
6339 value_len = val_end - att_beg - t->be->appsession_name_len;
6340 } else {
6341 cmp_len = att_end - att_beg;
6342 value_begin = val_beg;
6343 value_len = val_end - val_beg;
6344 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6345
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6346 /* let's see if the cookie is our appcookie */
6347 if (cmp_len == t->be->appsession_name_len &&
6348 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6349 manage_client_side_appsession(t, value_begin, value_len);
6350 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6351 }
6352
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6353 /* continue with next cookie on this header line */
6354 att_beg = next;
6355 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6356
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6357 /* There are no more cookies on this line.
6358 * We may still have one (or several) marked for deletion at the
6359 * end of the line. We must do this now in two ways :
6360 * - if some cookies must be preserved, we only delete from the
6361 * mark to the end of line ;
6362 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6363 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6364 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6365 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6366 if (preserve_hdr) {
6367 delta = del_hdr_value(req, &del_from, hdr_end);
6368 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6369 cur_hdr->len += delta;
6370 } else {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6371 delta = buffer_replace2(req, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6372
6373 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6374 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6375 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6376 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6377 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6378 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6379 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6380 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6381 }
6382
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6383 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6384 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6385 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6386}
6387
6388
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6389/* Iterate the same filter through all response headers contained in <rtr>.
6390 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6391 */
6392int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
6393{
6394 char term;
6395 char *cur_ptr, *cur_end, *cur_next;
6396 int cur_idx, old_idx, last_hdr;
6397 struct http_txn *txn = &t->txn;
6398 struct hdr_idx_elem *cur_hdr;
6399 int len, delta;
6400
6401 last_hdr = 0;
6402
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]6403 cur_next = rtr->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6404 old_idx = 0;
6405
6406 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6407 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6408 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6409 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6410 (exp->action == ACT_ALLOW ||
6411 exp->action == ACT_DENY))
6412 return 0;
6413
6414 cur_idx = txn->hdr_idx.v[old_idx].next;
6415 if (!cur_idx)
6416 break;
6417
6418 cur_hdr = &txn->hdr_idx.v[cur_idx];
6419 cur_ptr = cur_next;
6420 cur_end = cur_ptr + cur_hdr->len;
6421 cur_next = cur_end + cur_hdr->cr + 1;
6422
6423 /* Now we have one header between cur_ptr and cur_end,
6424 * and the next header starts at cur_next.
6425 */
6426
6427 /* The annoying part is that pattern matching needs
6428 * that we modify the contents to null-terminate all
6429 * strings before testing them.
6430 */
6431
6432 term = *cur_end;
6433 *cur_end = '\0';
6434
6435 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6436 switch (exp->action) {
6437 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6438 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6439 last_hdr = 1;
6440 break;
6441
6442 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6443 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6444 last_hdr = 1;
6445 break;
6446
6447 case ACT_REPLACE:
6448 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
6449 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
6450 /* FIXME: if the user adds a newline in the replacement, the
6451 * index will not be recalculated for now, and the new line
6452 * will not be counted as a new header.
6453 */
6454
6455 cur_end += delta;
6456 cur_next += delta;
6457 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6458 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6459 break;
6460
6461 case ACT_REMOVE:
6462 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
6463 cur_next += delta;
6464
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6465 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6466 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6467 txn->hdr_idx.used--;
6468 cur_hdr->len = 0;
6469 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6470 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6471 break;
6472
6473 }
6474 }
6475 if (cur_end)
6476 *cur_end = term; /* restore the string terminator */
6477
6478 /* keep the link from this header to next one in case of later
6479 * removal of next header.
6480 */
6481 old_idx = cur_idx;
6482 }
6483 return 0;
6484}
6485
6486
6487/* Apply the filter to the status line in the response buffer <rtr>.
6488 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6489 * or -1 if a replacement resulted in an invalid status line.
6490 */
6491int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
6492{
6493 char term;
6494 char *cur_ptr, *cur_end;
6495 int done;
6496 struct http_txn *txn = &t->txn;
6497 int len, delta;
6498
6499
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6500 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6501 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6502 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6503 (exp->action == ACT_ALLOW ||
6504 exp->action == ACT_DENY))
6505 return 0;
6506 else if (exp->action == ACT_REMOVE)
6507 return 0;
6508
6509 done = 0;
6510
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]6511 cur_ptr = rtr->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6512 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6513
6514 /* Now we have the status line between cur_ptr and cur_end */
6515
6516 /* The annoying part is that pattern matching needs
6517 * that we modify the contents to null-terminate all
6518 * strings before testing them.
6519 */
6520
6521 term = *cur_end;
6522 *cur_end = '\0';
6523
6524 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6525 switch (exp->action) {
6526 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6527 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6528 done = 1;
6529 break;
6530
6531 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6532 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6533 done = 1;
6534 break;
6535
6536 case ACT_REPLACE:
6537 *cur_end = term; /* restore the string terminator */
6538 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
6539 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
6540 /* FIXME: if the user adds a newline in the replacement, the
6541 * index will not be recalculated for now, and the new line
6542 * will not be counted as a new header.
6543 */
6544
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6545 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6546 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6547 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6548 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6549 cur_ptr, cur_end + 1,
6550 NULL, NULL);
6551 if (unlikely(!cur_end))
6552 return -1;
6553
6554 /* we have a full respnse and we know that we have either a CR
6555 * or an LF at <ptr>.
6556 */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]6557 txn->status = strl2ui(rtr->p + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6558 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]6559 /* there is no point trying this regex on headers */
6560 return 1;
6561 }
6562 }
6563 *cur_end = term; /* restore the string terminator */
6564 return done;
6565}
6566
6567
6568
6569/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6570 * 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]6571 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6572 * unparsable response.
6573 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6574int apply_filters_to_response(struct session *s, struct buffer *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6575{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6576 struct http_txn *txn = &s->txn;
6577 struct hdr_exp *exp;
6578
6579 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6580 int ret;
6581
6582 /*
6583 * The interleaving of transformations and verdicts
6584 * makes it difficult to decide to continue or stop
6585 * the evaluation.
6586 */
6587
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6588 if (txn->flags & TX_SVDENY)
6589 break;
6590
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6591 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6592 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6593 exp->action == ACT_PASS)) {
6594 exp = exp->next;
6595 continue;
6596 }
6597
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6598 /* if this filter had a condition, evaluate it now and skip to
6599 * next filter if the condition does not match.
6600 */
6601 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6602 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]6603 ret = acl_pass(ret);
6604 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6605 ret = !ret;
6606 if (!ret)
6607 continue;
6608 }
6609
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6610 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6611 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6612 if (unlikely(ret < 0))
6613 return -1;
6614
6615 if (likely(ret == 0)) {
6616 /* The filter did not match the response, it can be
6617 * iterated through all headers.
6618 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6619 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6620 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6621 }
6622 return 0;
6623}
6624
6625
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6626/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6627 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6628 * desirable to call it only when needed. This function is also used when we
6629 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6630 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6631void manage_server_side_cookies(struct session *t, struct buffer *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6632{
6633 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6634 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6635 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6636 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6637 char *hdr_beg, *hdr_end, *hdr_next;
6638 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6639
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6640 /* Iterate through the headers.
6641 * we start with the start line.
6642 */
6643 old_idx = 0;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]6644 hdr_next = res->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6645
6646 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6647 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6648 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6649
6650 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6651 hdr_beg = hdr_next;
6652 hdr_end = hdr_beg + cur_hdr->len;
6653 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6654
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6655 /* We have one full header between hdr_beg and hdr_end, and the
6656 * next header starts at hdr_next. We're only interested in
6657 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6658 */
6659
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6660 is_cookie2 = 0;
6661 prev = hdr_beg + 10;
6662 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6663 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6664 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6665 if (!val) {
6666 old_idx = cur_idx;
6667 continue;
6668 }
6669 is_cookie2 = 1;
6670 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6671 }
6672
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6673 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
6674 * <prev> points to the colon.
6675 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6676 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6677
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6678 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
6679 * check-cache is enabled) and we are not interested in checking
6680 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6681 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]6682 if (t->be->cookie_name == NULL &&
6683 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6684 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6685 return;
6686
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6687 /* OK so now we know we have to process this response cookie.
6688 * The format of the Set-Cookie header is slightly different
6689 * from the format of the Cookie header in that it does not
6690 * support the comma as a cookie delimiter (thus the header
6691 * cannot be folded) because the Expires attribute described in
6692 * the original Netscape's spec may contain an unquoted date
6693 * with a comma inside. We have to live with this because
6694 * many browsers don't support Max-Age and some browsers don't
6695 * support quoted strings. However the Set-Cookie2 header is
6696 * clean.
6697 *
6698 * We have to keep multiple pointers in order to support cookie
6699 * removal at the beginning, middle or end of header without
6700 * corrupting the header (in case of set-cookie2). A special
6701 * pointer, <scav> points to the beginning of the set-cookie-av
6702 * fields after the first semi-colon. The <next> pointer points
6703 * either to the end of line (set-cookie) or next unquoted comma
6704 * (set-cookie2). All of these headers are valid :
6705 *
6706 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
6707 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6708 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6709 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
6710 * | | | | | | | | | |
6711 * | | | | | | | | +-> next hdr_end <--+
6712 * | | | | | | | +------------> scav
6713 * | | | | | | +--------------> val_end
6714 * | | | | | +--------------------> val_beg
6715 * | | | | +----------------------> equal
6716 * | | | +------------------------> att_end
6717 * | | +----------------------------> att_beg
6718 * | +------------------------------> prev
6719 * +-----------------------------------------> hdr_beg
6720 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6721
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6722 for (; prev < hdr_end; prev = next) {
6723 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6724
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6725 /* find att_beg */
6726 att_beg = prev + 1;
6727 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6728 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6729
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6730 /* find att_end : this is the first character after the last non
6731 * space before the equal. It may be equal to hdr_end.
6732 */
6733 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6734
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6735 while (equal < hdr_end) {
6736 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
6737 break;
6738 if (http_is_spht[(unsigned char)*equal++])
6739 continue;
6740 att_end = equal;
6741 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6742
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6743 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6744 * is between <att_beg> and <equal>, both may be identical.
6745 */
6746
6747 /* look for end of cookie if there is an equal sign */
6748 if (equal < hdr_end && *equal == '=') {
6749 /* look for the beginning of the value */
6750 val_beg = equal + 1;
6751 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6752 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6753
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6754 /* find the end of the value, respecting quotes */
6755 next = find_cookie_value_end(val_beg, hdr_end);
6756
6757 /* make val_end point to the first white space or delimitor after the value */
6758 val_end = next;
6759 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6760 val_end--;
6761 } else {
6762 /* <equal> points to next comma, semi-colon or EOL */
6763 val_beg = val_end = next = equal;
6764 }
6765
6766 if (next < hdr_end) {
6767 /* Set-Cookie2 supports multiple cookies, and <next> points to
6768 * a colon or semi-colon before the end. So skip all attr-value
6769 * pairs and look for the next comma. For Set-Cookie, since
6770 * commas are permitted in values, skip to the end.
6771 */
6772 if (is_cookie2)
6773 next = find_hdr_value_end(next, hdr_end);
6774 else
6775 next = hdr_end;
6776 }
6777
6778 /* Now everything is as on the diagram above */
6779
6780 /* Ignore cookies with no equal sign */
6781 if (equal == val_end)
6782 continue;
6783
6784 /* If there are spaces around the equal sign, we need to
6785 * strip them otherwise we'll get trouble for cookie captures,
6786 * or even for rewrites. Since this happens extremely rarely,
6787 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6788 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6789 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6790 int stripped_before = 0;
6791 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6792
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6793 if (att_end != equal) {
6794 stripped_before = buffer_replace2(res, att_end, equal, NULL, 0);
6795 equal += stripped_before;
6796 val_beg += stripped_before;
6797 }
6798
6799 if (val_beg > equal + 1) {
6800 stripped_after = buffer_replace2(res, equal + 1, val_beg, NULL, 0);
6801 val_beg += stripped_after;
6802 stripped_before += stripped_after;
6803 }
6804
6805 val_end += stripped_before;
6806 next += stripped_before;
6807 hdr_end += stripped_before;
6808 hdr_next += stripped_before;
6809 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]6810 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6811 }
6812
6813 /* First, let's see if we want to capture this cookie. We check
6814 * that we don't already have a server side cookie, because we
6815 * can only capture one. Also as an optimisation, we ignore
6816 * cookies shorter than the declared name.
6817 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6818 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]6819 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6820 (val_end - att_beg >= t->fe->capture_namelen) &&
6821 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6822 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]6823 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6824 Alert("HTTP logging : out of memory.\n");
6825 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]6826 else {
6827 if (log_len > t->fe->capture_len)
6828 log_len = t->fe->capture_len;
6829 memcpy(txn->srv_cookie, att_beg, log_len);
6830 txn->srv_cookie[log_len] = 0;
6831 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6832 }
6833
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6834 srv = target_srv(&t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6835 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6836 if (!(t->flags & SN_IGNORE_PRST) &&
6837 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6838 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6839 /* assume passive cookie by default */
6840 txn->flags &= ~TX_SCK_MASK;
6841 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6842
6843 /* If the cookie is in insert mode on a known server, we'll delete
6844 * this occurrence because we'll insert another one later.
6845 * 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]6846 * a direct access.
6847 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6848 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]6849 /* The "preserve" flag was set, we don't want to touch the
6850 * server's cookie.
6851 */
6852 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6853 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
6854 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6855 /* this cookie must be deleted */
6856 if (*prev == ':' && next == hdr_end) {
6857 /* whole header */
6858 delta = buffer_replace2(res, hdr_beg, hdr_next, NULL, 0);
6859 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6860 txn->hdr_idx.used--;
6861 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6862 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6863 hdr_next += delta;
6864 http_msg_move_end(&txn->rsp, delta);
6865 /* note: while both invalid now, <next> and <hdr_end>
6866 * are still equal, so the for() will stop as expected.
6867 */
6868 } else {
6869 /* just remove the value */
6870 int delta = del_hdr_value(res, &prev, next);
6871 next = prev;
6872 hdr_end += delta;
6873 hdr_next += delta;
6874 cur_hdr->len += delta;
6875 http_msg_move_end(&txn->rsp, delta);
6876 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6877 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6878 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6879 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6880 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6881 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6882 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6883 * with this server since we know it.
6884 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6885 delta = buffer_replace2(res, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6886 next += delta;
6887 hdr_end += delta;
6888 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6889 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6890 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6891
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6892 txn->flags &= ~TX_SCK_MASK;
6893 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6894 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6895 else if (srv && srv && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6896 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6897 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6898 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6899 delta = buffer_replace2(res, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6900 next += delta;
6901 hdr_end += delta;
6902 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6903 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6904 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6905
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6906 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6907 txn->flags &= ~TX_SCK_MASK;
6908 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6909 }
6910 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6911 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
6912 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6913 int cmp_len, value_len;
6914 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6915
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6916 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6917 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6918 value_begin = att_beg + t->be->appsession_name_len;
6919 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]6920 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6921 cmp_len = att_end - att_beg;
6922 value_begin = val_beg;
6923 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6924 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6925
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]6926 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6927 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
6928 /* free a possibly previously allocated memory */
6929 pool_free2(apools.sessid, txn->sessid);
6930
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6931 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6932 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6933 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
6934 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
6935 return;
6936 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6937 memcpy(txn->sessid, value_begin, value_len);
6938 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6939 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6940 }
6941 /* that's done for this cookie, check the next one on the same
6942 * line when next != hdr_end (only if is_cookie2).
6943 */
6944 }
6945 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6946 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6947 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6948
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6949 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6950 appsess *asession = NULL;
6951 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6952 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6953 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]6954 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6955 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
6956 Alert("Not enough Memory process_srv():asession:calloc().\n");
6957 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
6958 return;
6959 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]6960 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
6961
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6962 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
6963 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
6964 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]6965 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6966 return;
6967 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6968 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6969 asession->sessid[t->be->appsession_len] = 0;
6970
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6971 server_id_len = strlen(target_srv(&t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6972 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]6973 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6974 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]6975 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6976 return;
6977 }
6978 asession->serverid[0] = '\0';
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6979 memcpy(asession->serverid, target_srv(&t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6980
6981 asession->request_count = 0;
6982 appsession_hash_insert(&(t->be->htbl_proxy), asession);
6983 }
6984
6985 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6986 asession->request_count++;
6987 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6988}
6989
6990
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6991/*
6992 * Check if response is cacheable or not. Updates t->flags.
6993 */
6994void check_response_for_cacheability(struct session *t, struct buffer *rtr)
6995{
6996 struct http_txn *txn = &t->txn;
6997 char *p1, *p2;
6998
6999 char *cur_ptr, *cur_end, *cur_next;
7000 int cur_idx;
7001
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7002 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7003 return;
7004
7005 /* Iterate through the headers.
7006 * we start with the start line.
7007 */
7008 cur_idx = 0;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7009 cur_next = rtr->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7010
7011 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7012 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7013 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]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 /* We have one full header between cur_ptr and cur_end, and the
7021 * next header starts at cur_next. We're only interested in
7022 * "Cookie:" headers.
7023 */
7024
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7025 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7026 if (val) {
7027 if ((cur_end - (cur_ptr + val) >= 8) &&
7028 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7029 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7030 return;
7031 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7032 }
7033
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7034 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7035 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7036 continue;
7037
7038 /* OK, right now we know we have a cache-control header at cur_ptr */
7039
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7040 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7041
7042 if (p1 >= cur_end) /* no more info */
7043 continue;
7044
7045 /* p1 is at the beginning of the value */
7046 p2 = p1;
7047
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7048 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7049 p2++;
7050
7051 /* we have a complete value between p1 and p2 */
7052 if (p2 < cur_end && *p2 == '=') {
7053 /* we have something of the form no-cache="set-cookie" */
7054 if ((cur_end - p1 >= 21) &&
7055 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7056 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7057 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7058 continue;
7059 }
7060
7061 /* OK, so we know that either p2 points to the end of string or to a comma */
7062 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7063 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7064 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7065 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7066 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7067 return;
7068 }
7069
7070 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7071 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7072 continue;
7073 }
7074 }
7075}
7076
7077
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7078/*
7079 * Try to retrieve a known appsession in the URI, then the associated server.
7080 * If the server is found, it's assigned to the session.
7081 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7082void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7083{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7084 char *end_params, *first_param, *cur_param, *next_param;
7085 char separator;
7086 int value_len;
7087
7088 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7089
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7090 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7091 (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]7092 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7093 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7094
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7095 first_param = NULL;
7096 switch (mode) {
7097 case PR_O2_AS_M_PP:
7098 first_param = memchr(begin, ';', len);
7099 break;
7100 case PR_O2_AS_M_QS:
7101 first_param = memchr(begin, '?', len);
7102 break;
7103 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7104
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7105 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7106 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7107 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7108
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7109 switch (mode) {
7110 case PR_O2_AS_M_PP:
7111 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7112 end_params = (char *) begin + len;
7113 }
7114 separator = ';';
7115 break;
7116 case PR_O2_AS_M_QS:
7117 end_params = (char *) begin + len;
7118 separator = '&';
7119 break;
7120 default:
7121 /* unknown mode, shouldn't happen */
7122 return;
7123 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7124
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7125 cur_param = next_param = end_params;
7126 while (cur_param > first_param) {
7127 cur_param--;
7128 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7129 /* let's see if this is the appsession parameter */
7130 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7131 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7132 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7133 /* Cool... it's the right one */
7134 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7135 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7136 if (value_len > 0) {
7137 manage_client_side_appsession(t, cur_param, value_len);
7138 }
7139 break;
7140 }
7141 next_param = cur_param;
7142 }
7143 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7144#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7145 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7146 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7147#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7148}
7149
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7150/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7151 * 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]7152 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7153 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7154 * 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]7155 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7156 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7157 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7158 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7159int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7160{
7161 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7162 struct http_msg *msg = &txn->req;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7163 const char *uri = msg->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7164 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7165
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7166 if (!uri_auth)
7167 return 0;
7168
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7169 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]7170 return 0;
7171
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7172 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7173 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7174
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7175 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7176 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7177 return 0;
7178
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7179 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7180 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7181 return 0;
7182
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7183 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7184 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7185 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7186 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7187 break;
7188 }
7189 h++;
7190 }
7191
7192 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7193 h = uri + uri_auth->uri_len;
7194 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7195 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7196 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7197 break;
7198 }
7199 h++;
7200 }
7201 }
7202
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7203 h = uri + uri_auth->uri_len;
7204 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7205 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7206 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7207 break;
7208 }
7209 h++;
7210 }
7211
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7212 h = uri + uri_auth->uri_len;
7213 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7214 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7215 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7216 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7217 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7218 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7219 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7220 si->applet.ctx.stats.st_code = i;
7221 break;
7222 }
7223 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7224 break;
7225 }
7226 h++;
7227 }
7228
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7229 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7230
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7231 return 1;
7232}
7233
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7234/*
7235 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7236 * By default it tries to report the error position as msg->err_pos. However if
7237 * this one is not set, it will then report msg->next, which is the last known
7238 * parsing point. The function is able to deal with wrapping buffers. It always
7239 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7240 */
7241void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7242 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7243 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7244{
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7245 struct buffer *buf = msg->buf;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7246 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7247
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7248 es->len = MIN(buf->i, sizeof(es->buf));
7249 len1 = buf->data + buf->size - buf->p;
7250 len1 = MIN(len1, es->len);
7251 len2 = es->len - len1; /* remaining data if buffer wraps */
7252
7253 memcpy(es->buf, buf->p, len1);
7254 if (len2)
7255 memcpy(es->buf + len1, buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7256
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7257 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7258 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7259 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7260 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7261
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7262 es->when = date; // user-visible date
7263 es->sid = s->uniq_id;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7264 es->srv = target_srv(&s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7265 es->oe = other_end;
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]7266 es->src = s->req->prod->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7267 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7268 es->ev_id = error_snapshot_id++;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7269 es->b_flags = buf->flags;
7270 es->s_flags = s->flags;
7271 es->t_flags = s->txn.flags;
7272 es->m_flags = msg->flags;
7273 es->b_out = buf->o;
7274 es->b_wrap = buf->data + buf->size - buf->p;
7275 es->b_tot = buf->total;
7276 es->m_clen = msg->chunk_len;
7277 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7278}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7279
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7280/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7281 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7282 * performed over the whole headers. Otherwise it must contain a valid header
7283 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7284 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7285 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7286 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7287 * -1.
7288 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7289 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7290unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7291 struct hdr_idx *idx, int occ,
7292 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7293{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7294 struct hdr_ctx local_ctx;
7295 char *ptr_hist[MAX_HDR_HISTORY];
7296 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7297 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7298 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7299
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7300 if (!ctx) {
7301 local_ctx.idx = 0;
7302 ctx = &local_ctx;
7303 }
7304
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7305 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7306 /* search from the beginning */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7307 while (http_find_header2(hname, hlen, msg->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7308 occ--;
7309 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7310 *vptr = ctx->line + ctx->val;
7311 *vlen = ctx->vlen;
7312 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7313 }
7314 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7315 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7316 }
7317
7318 /* negative occurrence, we scan all the list then walk back */
7319 if (-occ > MAX_HDR_HISTORY)
7320 return 0;
7321
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7322 found = hist_ptr = 0;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7323 while (http_find_header2(hname, hlen, msg->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7324 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7325 len_hist[hist_ptr] = ctx->vlen;
7326 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7327 hist_ptr = 0;
7328 found++;
7329 }
7330 if (-occ > found)
7331 return 0;
7332 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7333 * find occurrence -occ, so we have to check [hist_ptr+occ].
7334 */
7335 hist_ptr += occ;
7336 if (hist_ptr >= MAX_HDR_HISTORY)
7337 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7338 *vptr = ptr_hist[hist_ptr];
7339 *vlen = len_hist[hist_ptr];
7340 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7341}
7342
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7343/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7344 * Print a debug line with a header
7345 */
7346void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7347{
7348 int len, max;
7349 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]7350 dir, (unsigned short)si_fd(t->req->prod), (unsigned short)si_fd(t->req->cons));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7351 max = end - start;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]7352 UBOUND(max, trashlen - len - 1);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7353 len += strlcpy2(trash + len, start, max + 1);
7354 trash[len++] = '\n';
Willy Tarreau21337822012-04-29 14:11:38 +0200[diff] [blame]7355 if (write(1, trash, len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7356}
7357
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7358/*
7359 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7360 * the required fields are properly allocated and that we only need to (re)init
7361 * them. This should be used before processing any new request.
7362 */
7363void http_init_txn(struct session *s)
7364{
7365 struct http_txn *txn = &s->txn;
7366 struct proxy *fe = s->fe;
7367
7368 txn->flags = 0;
7369 txn->status = -1;
7370
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7371 global.req_count++;
7372
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7373 txn->cookie_first_date = 0;
7374 txn->cookie_last_date = 0;
7375
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7376 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7377 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7378 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7379 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7380 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7381 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7382 txn->req.chunk_len = 0LL;
7383 txn->req.body_len = 0LL;
7384 txn->rsp.chunk_len = 0LL;
7385 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7386 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7387 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]7388 txn->req.buf = s->req;
7389 txn->rsp.buf = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7390
7391 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7392
7393 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7394 if (fe->options2 & PR_O2_REQBUG_OK)
7395 txn->req.err_pos = -1; /* let buggy requests pass */
7396
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7397 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7398 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7399
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7400 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7401 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7402
7403 if (txn->hdr_idx.v)
7404 hdr_idx_init(&txn->hdr_idx);
7405}
7406
7407/* to be used at the end of a transaction */
7408void http_end_txn(struct session *s)
7409{
7410 struct http_txn *txn = &s->txn;
7411
7412 /* these ones will have been dynamically allocated */
7413 pool_free2(pool2_requri, txn->uri);
7414 pool_free2(pool2_capture, txn->cli_cookie);
7415 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7416 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7417 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7418
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7419 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7420 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7421 txn->uri = NULL;
7422 txn->srv_cookie = NULL;
7423 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7424
7425 if (txn->req.cap) {
7426 struct cap_hdr *h;
7427 for (h = s->fe->req_cap; h; h = h->next)
7428 pool_free2(h->pool, txn->req.cap[h->index]);
7429 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7430 }
7431
7432 if (txn->rsp.cap) {
7433 struct cap_hdr *h;
7434 for (h = s->fe->rsp_cap; h; h = h->next)
7435 pool_free2(h->pool, txn->rsp.cap[h->index]);
7436 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7437 }
7438
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7439}
7440
7441/* to be used at the end of a transaction to prepare a new one */
7442void http_reset_txn(struct session *s)
7443{
7444 http_end_txn(s);
7445 http_init_txn(s);
7446
7447 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7448 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7449 session_del_srv_conn(s);
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]7450 clear_target(&s->target);
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7451 /* re-init store persistence */
7452 s->store_count = 0;
7453
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7454 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7455
7456 s->req->flags |= BF_READ_DONTWAIT; /* one read is usually enough */
7457
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7458 /* We must trim any excess data from the response buffer, because we
7459 * may have blocked an invalid response from a server that we don't
7460 * want to accidentely forward once we disable the analysers, nor do
7461 * we want those data to come along with next response. A typical
7462 * example of such data would be from a buggy server responding to
7463 * a HEAD with some data, or sending more than the advertised
7464 * content-length.
7465 */
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]7466 if (unlikely(s->rep->i))
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]7467 s->rep->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7468
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7469 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7470 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7471
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7472 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7473 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7474
7475 s->req->rex = TICK_ETERNITY;
7476 s->req->wex = TICK_ETERNITY;
7477 s->req->analyse_exp = TICK_ETERNITY;
7478 s->rep->rex = TICK_ETERNITY;
7479 s->rep->wex = TICK_ETERNITY;
7480 s->rep->analyse_exp = TICK_ETERNITY;
7481}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7482
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7483void free_http_req_rules(struct list *r) {
7484 struct http_req_rule *tr, *pr;
7485
7486 list_for_each_entry_safe(pr, tr, r, list) {
7487 LIST_DEL(&pr->list);
7488 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7489 free(pr->http_auth.realm);
7490
7491 free(pr);
7492 }
7493}
7494
7495struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7496{
7497 struct http_req_rule *rule;
7498 int cur_arg;
7499
7500 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7501 if (!rule) {
7502 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7503 return NULL;
7504 }
7505
7506 if (!*args[0]) {
7507 goto req_error_parsing;
7508 } else if (!strcmp(args[0], "allow")) {
7509 rule->action = HTTP_REQ_ACT_ALLOW;
7510 cur_arg = 1;
7511 } else if (!strcmp(args[0], "deny")) {
7512 rule->action = HTTP_REQ_ACT_DENY;
7513 cur_arg = 1;
7514 } else if (!strcmp(args[0], "auth")) {
7515 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7516 cur_arg = 1;
7517
7518 while(*args[cur_arg]) {
7519 if (!strcmp(args[cur_arg], "realm")) {
7520 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7521 cur_arg+=2;
7522 continue;
7523 } else
7524 break;
7525 }
7526 } else {
7527req_error_parsing:
7528 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7529 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7530 return NULL;
7531 }
7532
7533 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7534 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7535 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7536
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7537 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7538 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7539 file, linenum, args[0], errmsg);
7540 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7541 return NULL;
7542 }
7543 rule->cond = cond;
7544 }
7545 else if (*args[cur_arg]) {
7546 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7547 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7548 file, linenum, args[0], args[cur_arg]);
7549 return NULL;
7550 }
7551
7552 return rule;
7553}
7554
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7555/************************************************************************/
7556/* The code below is dedicated to ACL parsing and matching */
7557/************************************************************************/
7558
7559
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7560/* This function ensures that the prerequisites for an L7 fetch are ready,
7561 * which means that a request or response is ready. If some data is missing,
7562 * 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]7563 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7564 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7565 *
7566 * The function returns :
7567 * 0 if some data is missing or if the requested data cannot be fetched
7568 * -1 if it is certain that we'll never have any HTTP message there
7569 * 1 if an HTTP message is ready
7570 */
7571static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7572acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7573 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7574{
7575 struct http_txn *txn = l7;
7576 struct http_msg *msg = &txn->req;
7577
7578 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7579 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7580 */
7581
7582 if (unlikely(!s || !txn))
7583 return 0;
7584
7585 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7586 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7587
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7588 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7589 if (unlikely(!s->req))
7590 return 0;
7591
7592 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
7593 if ((msg->msg_state == HTTP_MSG_ERROR) || (s->req->flags & BF_FULL)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7594 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7595 return -1;
7596 }
7597
7598 /* Try to decode HTTP request */
7599 if (likely(msg->next < s->req->i))
7600 http_msg_analyzer(msg, &txn->hdr_idx);
7601
7602 /* Still no valid request ? */
7603 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
7604 if ((msg->msg_state == HTTP_MSG_ERROR) || (s->req->flags & BF_FULL)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7605 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7606 return -1;
7607 }
7608 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7609 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7610 return 0;
7611 }
7612
7613 /* OK we just got a valid HTTP request. We have some minor
7614 * preparation to perform so that further checks can rely
7615 * on HTTP tests.
7616 */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7617 txn->meth = find_http_meth(msg->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7618 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7619 s->flags |= SN_REDIRECTABLE;
7620
7621 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7622 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7623 return -1;
7624 }
7625 }
7626
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7627 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7628 return 0; /* data might have moved and indexes changed */
7629
7630 /* otherwise everything's ready for the request */
7631 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7632 else {
7633 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7634 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7635 return 0;
7636 }
7637
7638 /* everything's OK */
7639 return 1;
7640}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7641
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7642#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7643 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]7644
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7645#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7646 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]7647
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7648
7649/* 1. Check on METHOD
7650 * We use the pre-parsed method if it is known, and store its number as an
7651 * integer. If it is unknown, we use the pointer and the length.
7652 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7653static 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]7654{
7655 int len, meth;
7656
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7657 len = strlen(*text);
7658 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7659
7660 pattern->val.i = meth;
7661 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7662 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7663 if (!pattern->ptr.str) {
7664 if (err)
7665 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7666 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7667 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7668 pattern->len = len;
7669 }
7670 return 1;
7671}
7672
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7673/* This function fetches the method of current HTTP request and stores
7674 * it in the global pattern struct as a chunk. There are two possibilities :
7675 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
7676 * in <len> and <ptr> is NULL ;
7677 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
7678 * <len> to its length.
7679 * This is intended to be used with acl_match_meth() only.
7680 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7681static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7682acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7683 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7684{
7685 int meth;
7686 struct http_txn *txn = l7;
7687
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7688 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7689
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7690 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7691 smp->type = SMP_T_UINT;
7692 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7693 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7694 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
7695 /* ensure the indexes are not affected */
7696 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7697 smp->type = SMP_T_CSTR;
7698 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7699 smp->data.str.str = txn->req.buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7700 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7701 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7702 return 1;
7703}
7704
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7705/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7706static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7707{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7708 int icase;
7709
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7710
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7711 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7712 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7713 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7714 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7715 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7716 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7717
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7718 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
7719 if (pattern->val.i != HTTP_METH_OTHER)
7720 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7721
7722 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7723 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7724 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7725
7726 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7727 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
7728 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7729 return ACL_PAT_FAIL;
7730 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7731}
7732
7733/* 2. Check on Request/Status Version
7734 * We simply compare strings here.
7735 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7736static 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]7737{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7738 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7739 if (!pattern->ptr.str) {
7740 if (err)
7741 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7742 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7743 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7744 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7745 return 1;
7746}
7747
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7748static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7749acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7750 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7751{
7752 struct http_txn *txn = l7;
7753 char *ptr;
7754 int len;
7755
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7756 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7757
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7758 len = txn->req.sl.rq.v_l;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7759 ptr = txn->req.buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7760
7761 while ((len-- > 0) && (*ptr++ != '/'));
7762 if (len <= 0)
7763 return 0;
7764
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7765 smp->type = SMP_T_CSTR;
7766 smp->data.str.str = ptr;
7767 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7768
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7769 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7770 return 1;
7771}
7772
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7773static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7774acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7775 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7776{
7777 struct http_txn *txn = l7;
7778 char *ptr;
7779 int len;
7780
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7781 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7782
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7783 len = txn->rsp.sl.st.v_l;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7784 ptr = txn->rsp.buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7785
7786 while ((len-- > 0) && (*ptr++ != '/'));
7787 if (len <= 0)
7788 return 0;
7789
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7790 smp->type = SMP_T_CSTR;
7791 smp->data.str.str = ptr;
7792 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7793
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7794 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7795 return 1;
7796}
7797
7798/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7799static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7800acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7801 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7802{
7803 struct http_txn *txn = l7;
7804 char *ptr;
7805 int len;
7806
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7807 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7808
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7809 len = txn->rsp.sl.st.c_l;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7810 ptr = txn->rsp.buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7811
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7812 smp->type = SMP_T_UINT;
7813 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7814 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7815 return 1;
7816}
7817
7818/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7819static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7820acl_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7821 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7822{
7823 struct http_txn *txn = l7;
7824
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7825 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7826
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7827 smp->type = SMP_T_CSTR;
7828 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7829 smp->data.str.str = txn->req.buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7830 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7831 return 1;
7832}
7833
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7834static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7835acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7836 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7837{
7838 struct http_txn *txn = l7;
7839
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7840 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7841
7842 /* Parse HTTP request */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7843 url2sa(txn->req.buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->addr.to);
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]7844 if (((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_family != AF_INET)
7845 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7846 smp->type = SMP_T_IPV4;
7847 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7848
7849 /*
7850 * If we are parsing url in frontend space, we prepare backend stage
7851 * to not parse again the same url ! optimization lazyness...
7852 */
7853 if (px->options & PR_O_HTTP_PROXY)
7854 l4->flags |= SN_ADDR_SET;
7855
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7856 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7857 return 1;
7858}
7859
7860static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7861acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7862 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7863{
7864 struct http_txn *txn = l7;
7865
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7866 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7867
7868 /* Same optimization as url_ip */
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7869 url2sa(txn->req.buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->addr.to);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7870 smp->type = SMP_T_UINT;
7871 smp->data.uint = ntohs(((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_port);
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7872
7873 if (px->options & PR_O_HTTP_PROXY)
7874 l4->flags |= SN_ADDR_SET;
7875
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7876 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7877 return 1;
7878}
7879
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7880/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
7881 * Accepts an optional argument of type string containing the header field name,
7882 * and an optional argument of type signed or unsigned integer to request an
7883 * explicit occurrence of the header. Note that in the event of a missing name,
7884 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7885 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7886static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7887smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7888 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7889{
7890 struct http_txn *txn = l7;
7891 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7892 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7893 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]7894 int occ = 0;
7895 const char *name_str = NULL;
7896 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7897
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7898 if (args) {
7899 if (args[0].type != ARGT_STR)
7900 return 0;
7901 name_str = args[0].data.str.str;
7902 name_len = args[0].data.str.len;
7903
7904 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
7905 occ = args[1].data.uint;
7906 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7907
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7908 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7909
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7910 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7911 /* search for header from the beginning */
7912 ctx->idx = 0;
7913
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7914 if (!occ && !(opt & SMP_OPT_ITERATE))
7915 /* no explicit occurrence and single fetch => last header by default */
7916 occ = -1;
7917
7918 if (!occ)
7919 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7920 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]7921
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7922 smp->type = SMP_T_CSTR;
7923 smp->flags |= SMP_F_VOL_HDR;
7924 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]7925 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7926
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7927 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7928 return 0;
7929}
7930
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7931/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7932 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7933 */
7934static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7935smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7936 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7937{
7938 struct http_txn *txn = l7;
7939 struct hdr_idx *idx = &txn->hdr_idx;
7940 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7941 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]7942 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7943
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7944 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7945 return 0;
7946
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7947 CHECK_HTTP_MESSAGE_FIRST();
7948
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7949 ctx.idx = 0;
7950 cnt = 0;
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]7951 while (http_find_header2(args->data.str.str, args->data.str.len, msg->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7952 cnt++;
7953
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7954 smp->type = SMP_T_UINT;
7955 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7956 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7957 return 1;
7958}
7959
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7960/* Fetch an HTTP header's integer value. The integer value is returned. It
7961 * takes a mandatory argument of type string and an optional one of type int
7962 * to designate a specific occurrence. It returns an unsigned integer, which
7963 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7964 */
7965static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7966smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7967 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7968{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7969 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7970
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7971 if (ret > 0) {
7972 smp->type = SMP_T_UINT;
7973 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
7974 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7975
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]7976 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7977}
7978
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7979/* Fetch an HTTP header's integer value. The integer value is returned. It
7980 * takes a mandatory argument of type string and an optional one of type int
7981 * to designate a specific occurrence. It returns an IPv4 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]7982 */
7983static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7984smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7985 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]7986{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]7987 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7988
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7989 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7990 smp->type = SMP_T_IPV4;
7991 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4))
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]7992 break;
7993 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7994 if (!(smp->flags & SMP_F_NOT_LAST))
7995 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]7996 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]7997 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]7998}
7999
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8000/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8001 * the first '/' after the possible hostname, and ends before the possible '?'.
8002 */
8003static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8004acl_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8005 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8006{
8007 struct http_txn *txn = l7;
8008 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8009
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8010 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8011
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]8012 end = txn->req.buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]8013 ptr = http_get_path(txn);
8014 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8015 return 0;
8016
8017 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8018 smp->type = SMP_T_CSTR;
8019 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8020
8021 while (ptr < end && *ptr != '?')
8022 ptr++;
8023
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8024 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8025 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8026 return 1;
8027}
8028
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8029static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8030acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8031 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8032{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8033 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8034 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8035 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8036
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8037 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8038
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8039 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8040 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8041 return 1;
8042}
8043
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8044/* return a valid test if the current request is the first one on the connection */
8045static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8046acl_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]8047 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8048{
8049 if (!s)
8050 return 0;
8051
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8052 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8053 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8054 return 1;
8055}
8056
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8057/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8058static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8059acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8060 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8061{
8062
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8063 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8064 return 0;
8065
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8066 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8067
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8068 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8069 return 0;
8070
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8071 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8072 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]8073 return 1;
8074}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8075
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8076/* Accepts exactly 1 argument of type userlist */
8077static int
8078acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8079 const struct arg *args, struct sample *smp)
8080{
8081
8082 if (!args || args->type != ARGT_USR)
8083 return 0;
8084
8085 CHECK_HTTP_MESSAGE_FIRST();
8086
8087 if (!get_http_auth(l4))
8088 return 0;
8089
8090 /* acl_match_auth() will need several information at once */
8091 smp->ctx.a[0] = args->data.usr; /* user list */
8092 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8093 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8094
8095 /* if the user does not belong to the userlist or has a wrong password,
8096 * report that it unconditionally does not match. Otherwise we return
8097 * a non-zero integer which will be ignored anyway since all the params
8098 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8099 */
8100 smp->type = SMP_T_BOOL;
8101 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8102 if (smp->data.uint)
8103 smp->type = SMP_T_UINT;
8104
8105 return 1;
8106}
8107
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8108/* Try to find the next occurrence of a cookie name in a cookie header value.
8109 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8110 * the cookie value is returned into *value and *value_l, and the function
8111 * returns a pointer to the next pointer to search from if the value was found.
8112 * Otherwise if the cookie was not found, NULL is returned and neither value
8113 * nor value_l are touched. The input <hdr> string should first point to the
8114 * header's value, and the <hdr_end> pointer must point to the first character
8115 * not part of the value. <list> must be non-zero if value may represent a list
8116 * of values (cookie headers). This makes it faster to abort parsing when no
8117 * list is expected.
8118 */
8119static char *
8120extract_cookie_value(char *hdr, const char *hdr_end,
8121 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8122 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8123{
8124 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8125 char *next;
8126
8127 /* we search at least a cookie name followed by an equal, and more
8128 * generally something like this :
8129 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8130 */
8131 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8132 /* Iterate through all cookies on this line */
8133
8134 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8135 att_beg++;
8136
8137 /* find att_end : this is the first character after the last non
8138 * space before the equal. It may be equal to hdr_end.
8139 */
8140 equal = att_end = att_beg;
8141
8142 while (equal < hdr_end) {
8143 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8144 break;
8145 if (http_is_spht[(unsigned char)*equal++])
8146 continue;
8147 att_end = equal;
8148 }
8149
8150 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8151 * is between <att_beg> and <equal>, both may be identical.
8152 */
8153
8154 /* look for end of cookie if there is an equal sign */
8155 if (equal < hdr_end && *equal == '=') {
8156 /* look for the beginning of the value */
8157 val_beg = equal + 1;
8158 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8159 val_beg++;
8160
8161 /* find the end of the value, respecting quotes */
8162 next = find_cookie_value_end(val_beg, hdr_end);
8163
8164 /* make val_end point to the first white space or delimitor after the value */
8165 val_end = next;
8166 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8167 val_end--;
8168 } else {
8169 val_beg = val_end = next = equal;
8170 }
8171
8172 /* We have nothing to do with attributes beginning with '$'. However,
8173 * they will automatically be removed if a header before them is removed,
8174 * since they're supposed to be linked together.
8175 */
8176 if (*att_beg == '$')
8177 continue;
8178
8179 /* Ignore cookies with no equal sign */
8180 if (equal == next)
8181 continue;
8182
8183 /* Now we have the cookie name between att_beg and att_end, and
8184 * its value between val_beg and val_end.
8185 */
8186
8187 if (att_end - att_beg == cookie_name_l &&
8188 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8189 /* let's return this value and indicate where to go on from */
8190 *value = val_beg;
8191 *value_l = val_end - val_beg;
8192 return next + 1;
8193 }
8194
8195 /* Set-Cookie headers only have the name in the first attr=value part */
8196 if (!list)
8197 break;
8198 }
8199
8200 return NULL;
8201}
8202
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8203/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8204 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8205 * end-of-header-value, and smp->ctx.a[2] for the hdr_idx. Depending on
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8206 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8207 * 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]8208 * Accepts exactly 1 argument of type string. If the input options indicate
8209 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8210 */
8211static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8212smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8213 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8214{
8215 struct http_txn *txn = l7;
8216 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8217 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8218 const struct http_msg *msg;
8219 const char *hdr_name;
8220 int hdr_name_len;
8221 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8222 int occ = 0;
8223 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8224
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8225 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8226 return 0;
8227
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8228 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8229
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8230 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8231 msg = &txn->req;
8232 hdr_name = "Cookie";
8233 hdr_name_len = 6;
8234 } else {
8235 msg = &txn->rsp;
8236 hdr_name = "Set-Cookie";
8237 hdr_name_len = 10;
8238 }
8239
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8240 if (!occ && !(opt & SMP_OPT_ITERATE))
8241 /* no explicit occurrence and single fetch => last cookie by default */
8242 occ = -1;
8243
8244 /* OK so basically here, either we want only one value and it's the
8245 * last one, or we want to iterate over all of them and we fetch the
8246 * next one.
8247 */
8248
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]8249 sol = msg->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8250 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8251 /* search for the header from the beginning, we must first initialize
8252 * the search parameters.
8253 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8254 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8255 ctx->idx = 0;
8256 }
8257
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8258 smp->flags |= SMP_F_VOL_HDR;
8259
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8260 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8261 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8262 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8263 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8264 goto out;
8265
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8266 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8267 continue;
8268
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8269 smp->ctx.a[0] = ctx->line + ctx->val;
8270 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8271 }
8272
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8273 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8274 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]8275 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8276 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8277 &smp->data.str.str,
8278 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8279 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8280 found = 1;
8281 if (occ >= 0) {
8282 /* one value was returned into smp->data.str.{str,len} */
8283 smp->flags |= SMP_F_NOT_LAST;
8284 return 1;
8285 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8286 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8287 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8288 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8289 /* all cookie headers and values were scanned. If we're looking for the
8290 * last occurrence, we may return it now.
8291 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8292 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8293 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8294 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8295}
8296
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8297/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8298 * 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]8299 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8300 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8301 */
8302static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8303acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8304 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8305{
8306 struct http_txn *txn = l7;
8307 struct hdr_idx *idx = &txn->hdr_idx;
8308 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8309 const struct http_msg *msg;
8310 const char *hdr_name;
8311 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8312 int cnt;
8313 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8314 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8315
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8316 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8317 return 0;
8318
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8319 CHECK_HTTP_MESSAGE_FIRST();
8320
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8321 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8322 msg = &txn->req;
8323 hdr_name = "Cookie";
8324 hdr_name_len = 6;
8325 } else {
8326 msg = &txn->rsp;
8327 hdr_name = "Set-Cookie";
8328 hdr_name_len = 10;
8329 }
8330
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]8331 sol = msg->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8332 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8333 ctx.idx = 0;
8334 cnt = 0;
8335
8336 while (1) {
8337 /* Note: val_beg == NULL every time we need to fetch a new header */
8338 if (!val_beg) {
8339 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8340 break;
8341
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8342 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8343 continue;
8344
8345 val_beg = ctx.line + ctx.val;
8346 val_end = val_beg + ctx.vlen;
8347 }
8348
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8349 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8350 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8351 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8352 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8353 &smp->data.str.str,
8354 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8355 cnt++;
8356 }
8357 }
8358
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8359 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8360 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8361 return 1;
8362}
8363
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8364/* Fetch an cookie's integer value. The integer value is returned. It
8365 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8366 */
8367static int
8368smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8369 const struct arg *args, struct sample *smp)
8370{
8371 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8372
8373 if (ret > 0) {
8374 smp->type = SMP_T_UINT;
8375 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8376 }
8377
8378 return ret;
8379}
8380
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8381/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8382/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8383/************************************************************************/
8384
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8385/*
8386 * Given a path string and its length, find the position of beginning of the
8387 * query string. Returns NULL if no query string is found in the path.
8388 *
8389 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8390 *
8391 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8392 */
8393static inline char *find_query_string(char *path, size_t path_l)
8394{
8395 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8396
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8397 p = memchr(path, '?', path_l);
8398 return p ? p + 1 : NULL;
8399}
8400
8401static inline int is_param_delimiter(char c)
8402{
8403 return c == '&' || c == ';';
8404}
8405
8406/*
8407 * Given a url parameter, find the starting position of the first occurence,
8408 * or NULL if the parameter is not found.
8409 *
8410 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8411 * the function will return query_string+8.
8412 */
8413static char*
8414find_url_param_pos(char* query_string, size_t query_string_l,
8415 char* url_param_name, size_t url_param_name_l)
8416{
8417 char *pos, *last;
8418
8419 pos = query_string;
8420 last = query_string + query_string_l - url_param_name_l - 1;
8421
8422 while (pos <= last) {
8423 if (pos[url_param_name_l] == '=') {
8424 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8425 return pos;
8426 pos += url_param_name_l + 1;
8427 }
8428 while (pos <= last && !is_param_delimiter(*pos))
8429 pos++;
8430 pos++;
8431 }
8432 return NULL;
8433}
8434
8435/*
8436 * Given a url parameter name, returns its value and size into *value and
8437 * *value_l respectively, and returns non-zero. If the parameter is not found,
8438 * zero is returned and value/value_l are not touched.
8439 */
8440static int
8441find_url_param_value(char* path, size_t path_l,
8442 char* url_param_name, size_t url_param_name_l,
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8443 char** value, int* value_l)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8444{
8445 char *query_string, *qs_end;
8446 char *arg_start;
8447 char *value_start, *value_end;
8448
8449 query_string = find_query_string(path, path_l);
8450 if (!query_string)
8451 return 0;
8452
8453 qs_end = path + path_l;
8454 arg_start = find_url_param_pos(query_string, qs_end - query_string,
8455 url_param_name, url_param_name_l);
8456 if (!arg_start)
8457 return 0;
8458
8459 value_start = arg_start + url_param_name_l + 1;
8460 value_end = value_start;
8461
8462 while ((value_end < qs_end) && !is_param_delimiter(*value_end))
8463 value_end++;
8464
8465 *value = value_start;
8466 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8467 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8468}
8469
8470static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8471smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8472 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8473{
8474 struct http_txn *txn = l7;
8475 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8476
8477 if (!args || args->type != ARGT_STR)
8478 return 0;
8479
8480 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8481
Willy Tarreau09d1e252012-05-18 22:36:34 +0200[diff] [blame]8482 if (!find_url_param_value(msg->buf->p + msg->sl.rq.u, msg->sl.rq.u_l,
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8483 args->data.str.str, args->data.str.len,
8484 &smp->data.str.str, &smp->data.str.len))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8485 return 0;
8486
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8487 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8488 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8489 return 1;
8490}
8491
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8492/* This function is used to validate the arguments passed to any "hdr" fetch
8493 * keyword. These keywords support an optional positive or negative occurrence
8494 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8495 * is assumed that the types are already the correct ones. Returns 0 on error,
8496 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8497 * error message in case of error, that the caller is responsible for freeing.
8498 * The initial location must either be freeable or NULL.
8499 */
8500static int val_hdr(struct arg *arg, char **err_msg)
8501{
8502 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
8503 if (err_msg)
8504 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
8505 return 0;
8506 }
8507 return 1;
8508}
8509
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8510/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8511/* All supported ACL keywords must be declared here. */
8512/************************************************************************/
8513
8514/* Note: must not be declared <const> as its list will be overwritten.
8515 * Please take care of keeping this list alphabetically sorted.
8516 */
8517static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8518 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8519 { "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]8520 { "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]8521 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8522 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8523 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8524 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8525 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8526 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8527 { "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]8528
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8529 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8530 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8531 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8532 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8533 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8534 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8535 { "hdr_ip", acl_parse_ip, smp_fetch_hdr_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8536 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8537 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8538 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8539 { "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]8540
8541 { "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]8542 { "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]8543 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8544
8545 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8546
8547 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8548 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8549 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8550 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8551 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8552 { "path_len", acl_parse_int, acl_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8553 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8554 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8555
8556 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8557 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8558 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8559
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8560 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8561 { "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]8562 { "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]8563 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8564 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8565 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8566 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8567 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8568 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8569 { "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]8570
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8571 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8572 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8573 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8574 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8575 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8576 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8577 { "shdr_ip", acl_parse_ip, smp_fetch_hdr_ip, acl_match_ip, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8578 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8579 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8580 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8581 { "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]8582
8583 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
8584
8585 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8586 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8587 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8588 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8589 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8590 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8591 { "url_len", acl_parse_int, acl_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8592 { "url_port", acl_parse_int, acl_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
8593 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8594 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8595
8596 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8597 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8598 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8599 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8600 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8601 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8602 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8603 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8604 { "urlp_sub", acl_parse_str, smp_fetch_url_param, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8605
8606 { NULL, NULL, NULL, NULL },
8607}};
8608
8609/************************************************************************/
8610/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8611/************************************************************************/
8612/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8613static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8614 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_REQ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8615 { "url_param", smp_fetch_url_param, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_REQ },
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8616 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_REQ|SMP_CAP_RES },
8617 { "set-cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_RES }, /* deprecated */
Willy Tarreau9fcb9842012-04-20 14:45:49 +0200[diff] [blame]8618 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8619}};
8620
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8621
8622__attribute__((constructor))
8623static void __http_protocol_init(void)
8624{
8625 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8626 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8627}
8628
8629
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8630/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8631 * Local variables:
8632 * c-indent-level: 8
8633 * c-basic-offset: 8
8634 * End:
8635 */