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git01.mediatek.com / haproxy / b277d6e56803901874541e2db59f91077649e8b7 / . / src / proto_http.c
blob: 6cc9c9fbe9c902999b2455b14eef813d5b059052 [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;
393 size += snprintf(trash + size, sizeof(trash) - 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;
400 size += snprintf(trash + size, sizeof(trash) - 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 Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]715 ptr = txn->req.buf->p + txn->req.sol + 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.
757 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]758void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759{
760 struct http_txn *txn;
761 struct chunk rdr;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]762 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]763 char *path;
764 int len;
765
766 /* 1: create the response header */
767 rdr.len = strlen(HTTP_302);
768 rdr.str = trash;
Willy Tarreau59e0b0f2010-01-09 21:29:23 +0100[diff] [blame]769 rdr.size = sizeof(trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]770 memcpy(rdr.str, HTTP_302, rdr.len);
771
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]772 srv = target_srv(&s->target);
773
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]774 /* 2: add the server's prefix */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]775 if (rdr.len + srv->rdr_len > rdr.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]776 return;
777
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]778 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]779 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
780 memcpy(rdr.str + rdr.len, srv->rdr_pfx, srv->rdr_len);
781 rdr.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]782 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]783
784 /* 3: add the request URI */
785 txn = &s->txn;
786 path = http_get_path(txn);
787 if (!path)
788 return;
789
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]790 len = txn->req.sl.rq.u_l + (s->req->p + txn->req.sol + txn->req.sl.rq.u) - path;
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]791 if (rdr.len + len > rdr.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 return;
793
794 memcpy(rdr.str + rdr.len, path, len);
795 rdr.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]796
797 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
798 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
799 rdr.len += 29;
800 } else {
801 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
802 rdr.len += 23;
803 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]804
805 /* prepare to return without error. */
Willy Tarreau060781f2012-05-07 16:50:03 +0200[diff] [blame]806 si->sock.shutr(si);
807 si->sock.shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]808 si->err_type = SI_ET_NONE;
809 si->err_loc = NULL;
810 si->state = SI_ST_CLO;
811
812 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]813 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]814
815 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]816 if (srv)
817 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]818}
819
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]820/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]821 * that the server side is closed. Note that err_type is actually a
822 * bitmask, where almost only aborts may be cumulated with other
823 * values. We consider that aborted operations are more important
824 * than timeouts or errors due to the fact that nobody else in the
825 * logs might explain incomplete retries. All others should avoid
826 * being cumulated. It should normally not be possible to have multiple
827 * aborts at once, but just in case, the first one in sequence is reported.
828 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]829void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]830{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]831 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]832
833 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]834 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
835 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]836 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]837 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
838 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]839 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]840 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
841 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]842 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]843 http_server_error(s, si, SN_ERR_SRVCL, 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_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]846 http_server_error(s, si, SN_ERR_SRVTO, 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_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]849 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
850 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]851 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]852 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
853 500, error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]854}
855
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]856extern const char sess_term_cond[8];
857extern const char sess_fin_state[8];
858extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]859struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]860struct pool_head *pool2_capture;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]861struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]862
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]863/*
864 * Capture headers from message starting at <som> according to header list
865 * <cap_hdr>, and fill the <idx> structure appropriately.
866 */
867void capture_headers(char *som, struct hdr_idx *idx,
868 char **cap, struct cap_hdr *cap_hdr)
869{
870 char *eol, *sol, *col, *sov;
871 int cur_idx;
872 struct cap_hdr *h;
873 int len;
874
875 sol = som + hdr_idx_first_pos(idx);
876 cur_idx = hdr_idx_first_idx(idx);
877
878 while (cur_idx) {
879 eol = sol + idx->v[cur_idx].len;
880
881 col = sol;
882 while (col < eol && *col != ':')
883 col++;
884
885 sov = col + 1;
886 while (sov < eol && http_is_lws[(unsigned char)*sov])
887 sov++;
888
889 for (h = cap_hdr; h; h = h->next) {
890 if ((h->namelen == col - sol) &&
891 (strncasecmp(sol, h->name, h->namelen) == 0)) {
892 if (cap[h->index] == NULL)
893 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]894 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]895
896 if (cap[h->index] == NULL) {
897 Alert("HTTP capture : out of memory.\n");
898 continue;
899 }
900
901 len = eol - sov;
902 if (len > h->len)
903 len = h->len;
904
905 memcpy(cap[h->index], sov, len);
906 cap[h->index][len]=0;
907 }
908 }
909 sol = eol + idx->v[cur_idx].cr + 1;
910 cur_idx = idx->v[cur_idx].next;
911 }
912}
913
914
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]915/* either we find an LF at <ptr> or we jump to <bad>.
916 */
917#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
918
919/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
920 * otherwise to <http_msg_ood> with <state> set to <st>.
921 */
922#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
923 ptr++; \
924 if (likely(ptr < end)) \
925 goto good; \
926 else { \
927 state = (st); \
928 goto http_msg_ood; \
929 } \
930 } while (0)
931
932
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]933/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]934 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]935 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
936 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
937 * will give undefined results.
938 * Note that it is upon the caller's responsibility to ensure that ptr < end,
939 * and that msg->sol points to the beginning of the response.
940 * If a complete line is found (which implies that at least one CR or LF is
941 * found before <end>, the updated <ptr> is returned, otherwise NULL is
942 * returned indicating an incomplete line (which does not mean that parts have
943 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
944 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
945 * upon next call.
946 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]947 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]948 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
949 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]950 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]951 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]952const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]953 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]954 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]955{
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]956 const char *msg_start = msg->buf->p;
957
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]958 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]959 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]960 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]961 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]962 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
963
964 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]965 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]966 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
967 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]968 state = HTTP_MSG_ERROR;
969 break;
970
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]972 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]973 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]974 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 goto http_msg_rpcode;
976 }
977 if (likely(HTTP_IS_SPHT(*ptr)))
978 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
979 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]980 state = HTTP_MSG_ERROR;
981 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]982
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]983 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]984 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]985 if (likely(!HTTP_IS_LWS(*ptr)))
986 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
987
988 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]989 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]990 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
991 }
992
993 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]994 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]995 http_msg_rsp_reason:
996 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]997 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]998 msg->sl.st.r_l = 0;
999 goto http_msg_rpline_eol;
1000
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1001 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1002 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1003 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1004 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1005 goto http_msg_rpreason;
1006 }
1007 if (likely(HTTP_IS_SPHT(*ptr)))
1008 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1009 /* so it's a CR/LF, so there is no reason phrase */
1010 goto http_msg_rsp_reason;
1011
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1012 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1013 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1014 if (likely(!HTTP_IS_CRLF(*ptr)))
1015 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1016 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1017 http_msg_rpline_eol:
1018 /* We have seen the end of line. Note that we do not
1019 * necessarily have the \n yet, but at least we know that we
1020 * have EITHER \r OR \n, otherwise the response would not be
1021 * complete. We can then record the response length and return
1022 * to the caller which will be able to register it.
1023 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1024 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1025 return ptr;
1026
1027#ifdef DEBUG_FULL
1028 default:
1029 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1030 exit(1);
1031#endif
1032 }
1033
1034 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1035 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1036 if (ret_state)
1037 *ret_state = state;
1038 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1039 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1040 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1041}
1042
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1043/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1044 * This function parses a request line between <ptr> and <end>, starting with
1045 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1046 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1047 * will give undefined results.
1048 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1049 * and that msg->sol points to the beginning of the request.
1050 * If a complete line is found (which implies that at least one CR or LF is
1051 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1052 * returned indicating an incomplete line (which does not mean that parts have
1053 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1054 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1055 * upon next call.
1056 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1057 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1058 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1059 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1060 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1061 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1062const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1063 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1064 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1065{
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1066 const char *msg_start = msg->buf->p;
1067
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1068 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1069 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1070 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1071 if (likely(HTTP_IS_TOKEN(*ptr)))
1072 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1073
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1074 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1075 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1076 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1077 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1078
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1079 if (likely(HTTP_IS_CRLF(*ptr))) {
1080 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1081 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1082 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1083 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1084 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1085 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1086 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1087 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 msg->sl.rq.v_l = 0;
1089 goto http_msg_rqline_eol;
1090 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1091 state = HTTP_MSG_ERROR;
1092 break;
1093
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1094 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1095 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1096 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1097 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 goto http_msg_rquri;
1099 }
1100 if (likely(HTTP_IS_SPHT(*ptr)))
1101 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1102 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1103 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1104
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1105 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1106 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1107 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1108 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1109
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1110 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1111 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1112 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1113 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1114
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1115 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1116 /* non-ASCII chars are forbidden unless option
1117 * accept-invalid-http-request is enabled in the frontend.
1118 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1119 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1120 if (msg->err_pos < -1)
1121 goto invalid_char;
1122 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1123 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1124 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1125 }
1126
1127 if (likely(HTTP_IS_CRLF(*ptr))) {
1128 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1129 goto http_msg_req09_uri_e;
1130 }
1131
1132 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1133 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1134 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1135 state = HTTP_MSG_ERROR;
1136 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1137
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1138 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1139 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1140 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1141 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1142 goto http_msg_rqver;
1143 }
1144 if (likely(HTTP_IS_SPHT(*ptr)))
1145 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1146 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1147 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1148
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1149 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1150 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1151 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1152 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1153
1154 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1155 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1156 http_msg_rqline_eol:
1157 /* We have seen the end of line. Note that we do not
1158 * necessarily have the \n yet, but at least we know that we
1159 * have EITHER \r OR \n, otherwise the request would not be
1160 * complete. We can then record the request length and return
1161 * to the caller which will be able to register it.
1162 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1163 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1164 return ptr;
1165 }
1166
1167 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1168 state = HTTP_MSG_ERROR;
1169 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1170
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1171#ifdef DEBUG_FULL
1172 default:
1173 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1174 exit(1);
1175#endif
1176 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1177
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1178 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1179 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1180 if (ret_state)
1181 *ret_state = state;
1182 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1183 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1185}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1186
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1187/*
1188 * Returns the data from Authorization header. Function may be called more
1189 * than once so data is stored in txn->auth_data. When no header is found
1190 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1191 * searching again for something we are unable to find anyway.
1192 */
1193
1194char get_http_auth_buff[BUFSIZE];
1195
1196int
1197get_http_auth(struct session *s)
1198{
1199
1200 struct http_txn *txn = &s->txn;
1201 struct chunk auth_method;
1202 struct hdr_ctx ctx;
1203 char *h, *p;
1204 int len;
1205
1206#ifdef DEBUG_AUTH
1207 printf("Auth for session %p: %d\n", s, txn->auth.method);
1208#endif
1209
1210 if (txn->auth.method == HTTP_AUTH_WRONG)
1211 return 0;
1212
1213 if (txn->auth.method)
1214 return 1;
1215
1216 txn->auth.method = HTTP_AUTH_WRONG;
1217
1218 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1219
1220 if (txn->flags & TX_USE_PX_CONN) {
1221 h = "Proxy-Authorization";
1222 len = strlen(h);
1223 } else {
1224 h = "Authorization";
1225 len = strlen(h);
1226 }
1227
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1228 if (!http_find_header2(h, len, s->req->p + txn->req.sol, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1229 return 0;
1230
1231 h = ctx.line + ctx.val;
1232
1233 p = memchr(h, ' ', ctx.vlen);
1234 if (!p || p == h)
1235 return 0;
1236
1237 chunk_initlen(&auth_method, h, 0, p-h);
1238 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1239
1240 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1241
1242 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
1243 get_http_auth_buff, BUFSIZE - 1);
1244
1245 if (len < 0)
1246 return 0;
1247
1248
1249 get_http_auth_buff[len] = '\0';
1250
1251 p = strchr(get_http_auth_buff, ':');
1252
1253 if (!p)
1254 return 0;
1255
1256 txn->auth.user = get_http_auth_buff;
1257 *p = '\0';
1258 txn->auth.pass = p+1;
1259
1260 txn->auth.method = HTTP_AUTH_BASIC;
1261 return 1;
1262 }
1263
1264 return 0;
1265}
1266
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1267
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1268/*
1269 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1270 * depending on the initial msg->msg_state. The caller is responsible for
1271 * ensuring that the message does not wrap. The function can be preempted
1272 * everywhere when data are missing and recalled at the exact same location
1273 * with no information loss. The message may even be realigned between two
1274 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1275 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1276 * fields. Note that msg->som and msg->sol will be initialized after completing
1277 * the first state, so that none of the msg pointers has to be initialized
1278 * prior to the first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1279 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1280void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1281{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1282 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1283 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1284 struct buffer *buf = msg->buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1285
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1286 state = msg->msg_state;
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1287 ptr = buf->p + msg->next;
1288 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1289
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1290 if (unlikely(ptr >= end))
1291 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1292
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1293 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1294 /*
1295 * First, states that are specific to the response only.
1296 * We check them first so that request and headers are
1297 * closer to each other (accessed more often).
1298 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1299 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1300 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1301 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1302 /* we have a start of message, but we have to check
1303 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1304 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1305 */
Willy Tarreau89fa7062012-03-02 16:13:16 +0100[diff] [blame]1306 char *beg = buf->p;
1307
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1308 if (unlikely(ptr != beg)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1309 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1310 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1311 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]1312 bi_fast_delete(buf, ptr - beg);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1313 }
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1314 msg->sol = msg->som = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1315 hdr_idx_init(idx);
1316 state = HTTP_MSG_RPVER;
1317 goto http_msg_rpver;
1318 }
1319
1320 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1321 goto http_msg_invalid;
1322
1323 if (unlikely(*ptr == '\n'))
1324 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1325 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1326 /* stop here */
1327
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1328 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1329 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1330 EXPECT_LF_HERE(ptr, http_msg_invalid);
1331 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1332 /* stop here */
1333
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1334 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1335 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1336 case HTTP_MSG_RPVER_SP:
1337 case HTTP_MSG_RPCODE:
1338 case HTTP_MSG_RPCODE_SP:
1339 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1340 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1341 state, ptr, end,
1342 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1343 if (unlikely(!ptr))
1344 return;
1345
1346 /* we have a full response and we know that we have either a CR
1347 * or an LF at <ptr>.
1348 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1349 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1350
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1351 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1352 if (likely(*ptr == '\r'))
1353 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1354 goto http_msg_rpline_end;
1355
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1357 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1358 /* msg->sol must point to the first of CR or LF. */
1359 EXPECT_LF_HERE(ptr, http_msg_invalid);
1360 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1361 /* stop here */
1362
1363 /*
1364 * Second, states that are specific to the request only
1365 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1366 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1367 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1368 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1369 /* we have a start of message, but we have to check
1370 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1371 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1372 */
Willy Tarreau89fa7062012-03-02 16:13:16 +0100[diff] [blame]1373 char *beg = buf->p;
1374
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1375 if (likely(ptr != beg)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1376 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1377 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1378 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]1379 bi_fast_delete(buf, ptr - beg);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1380 }
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1381 msg->sol = msg->som = ptr - buf->p;
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1382 /* we will need this when keep-alive will be supported
1383 hdr_idx_init(idx);
1384 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1385 state = HTTP_MSG_RQMETH;
1386 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1387 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1390 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1391
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 if (unlikely(*ptr == '\n'))
1393 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1394 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1395 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1398 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1399 EXPECT_LF_HERE(ptr, http_msg_invalid);
1400 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1401 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1402
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1403 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1404 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1405 case HTTP_MSG_RQMETH_SP:
1406 case HTTP_MSG_RQURI:
1407 case HTTP_MSG_RQURI_SP:
1408 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1409 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1410 state, ptr, end,
1411 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 if (unlikely(!ptr))
1413 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1414
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1415 /* we have a full request and we know that we have either a CR
1416 * or an LF at <ptr>.
1417 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1419
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1420 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1421 if (likely(*ptr == '\r'))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1426 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 /* check for HTTP/0.9 request : no version information available.
1428 * msg->sol must point to the first of CR or LF.
1429 */
1430 if (unlikely(msg->sl.rq.v_l == 0))
1431 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1432
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 EXPECT_LF_HERE(ptr, http_msg_invalid);
1434 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1435 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1436
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 /*
1438 * Common states below
1439 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1441 http_msg_hdr_first:
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1442 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1443 if (likely(!HTTP_IS_CRLF(*ptr))) {
1444 goto http_msg_hdr_name;
1445 }
1446
1447 if (likely(*ptr == '\r'))
1448 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1449 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1450
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1451 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1452 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1453 /* assumes msg->sol points to the first char */
1454 if (likely(HTTP_IS_TOKEN(*ptr)))
1455 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1456
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1457 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 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]1459
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1460 if (likely(msg->err_pos < -1) || *ptr == '\n')
1461 goto http_msg_invalid;
1462
1463 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1464 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1465
1466 /* and we still accept this non-token character */
1467 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1468
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1469 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1470 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1471 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1472 if (likely(HTTP_IS_SPHT(*ptr)))
1473 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]1474
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1475 /* header value can be basically anything except CR/LF */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1476 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1477
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 if (likely(!HTTP_IS_CRLF(*ptr))) {
1479 goto http_msg_hdr_val;
1480 }
1481
1482 if (likely(*ptr == '\r'))
1483 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1484 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1485
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1487 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 EXPECT_LF_HERE(ptr, http_msg_invalid);
1489 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]1490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1492 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 if (likely(HTTP_IS_SPHT(*ptr))) {
1494 /* replace HT,CR,LF with spaces */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1495 for (; buf->p + msg->sov < ptr; msg->sov++)
1496 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 goto http_msg_hdr_l1_sp;
1498 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1499 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1500 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 goto http_msg_complete_header;
1502
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1504 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1505 /* assumes msg->sol points to the first char, and msg->sov
1506 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 */
1508 if (likely(!HTTP_IS_CRLF(*ptr)))
1509 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1510
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1511 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 /* Note: we could also copy eol into ->eoh so that we have the
1513 * real header end in case it ends with lots of LWS, but is this
1514 * really needed ?
1515 */
1516 if (likely(*ptr == '\r'))
1517 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1518 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1521 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 EXPECT_LF_HERE(ptr, http_msg_invalid);
1523 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]1524
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1526 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1528 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1529 for (; buf->p + msg->eol < ptr; msg->eol++)
1530 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 goto http_msg_hdr_val;
1532 }
1533 http_msg_complete_header:
1534 /*
1535 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1536 * Assumes msg->sol points to the first char, msg->sov points
1537 * to the first character of the value and msg->eol to the
1538 * first CR or LF so we know how the line ends. We insert last
1539 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1540 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1541 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 idx, idx->tail) < 0))
1543 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1544
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1545 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 if (likely(!HTTP_IS_CRLF(*ptr))) {
1547 goto http_msg_hdr_name;
1548 }
1549
1550 if (likely(*ptr == '\r'))
1551 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1552 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1553
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1555 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 /* Assumes msg->sol points to the first of either CR or LF */
1557 EXPECT_LF_HERE(ptr, http_msg_invalid);
1558 ptr++;
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1559 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1560 msg->eoh = msg->sol;
1561 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1562 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1563 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1564
1565 case HTTP_MSG_ERROR:
1566 /* this may only happen if we call http_msg_analyser() twice with an error */
1567 break;
1568
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569#ifdef DEBUG_FULL
1570 default:
1571 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1572 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1573#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 }
1575 http_msg_ood:
1576 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1577 msg->msg_state = state;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1578 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 http_msg_invalid:
1582 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1583 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1584 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 return;
1586}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1587
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1588/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1589 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1590 * nothing is done and 1 is returned.
1591 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1592static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1593{
1594 int delta;
1595 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1596 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1597
1598 if (msg->sl.rq.v_l != 0)
1599 return 1;
1600
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1601 cur_end = msg->buf->p + msg->sol + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1602 delta = 0;
1603
1604 if (msg->sl.rq.u_l == 0) {
1605 /* if no URI was set, add "/" */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1606 delta = buffer_replace2(msg->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1607 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1608 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1609 }
1610 /* add HTTP version */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1611 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]1612 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1613 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1614 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1615 HTTP_MSG_RQMETH,
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1616 msg->buf->p + msg->sol, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1617 NULL, NULL);
1618 if (unlikely(!cur_end))
1619 return 0;
1620
1621 /* we have a full HTTP/1.0 request now and we know that
1622 * we have either a CR or an LF at <ptr>.
1623 */
1624 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1625 return 1;
1626}
1627
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1628/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1629 * and "keep-alive" values. If we already know that some headers may safely
1630 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1631 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1632 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
1633 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1634 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1635 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1636 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1637 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1638void 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]1639{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1640 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1641 const char *hdr_val = "Connection";
1642 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1643
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1644 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1645 return;
1646
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1647 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1648 hdr_val = "Proxy-Connection";
1649 hdr_len = 16;
1650 }
1651
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1652 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1653 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1654 while (http_find_header2(hdr_val, hdr_len, msg->buf->p + msg->sol, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1655 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1656 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1657 if (to_del & 2)
1658 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1659 else
1660 txn->flags |= TX_CON_KAL_SET;
1661 }
1662 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1663 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1664 if (to_del & 1)
1665 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1666 else
1667 txn->flags |= TX_CON_CLO_SET;
1668 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1669 }
1670
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1671 txn->flags |= TX_HDR_CONN_PRS;
1672 return;
1673}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1674
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1675/* Apply desired changes on the Connection: header. Values may be removed and/or
1676 * added depending on the <wanted> flags, which are exclusively composed of
1677 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1678 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1679 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1680void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1681{
1682 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1683 const char *hdr_val = "Connection";
1684 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1685
1686 ctx.idx = 0;
1687
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1688
1689 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1690 hdr_val = "Proxy-Connection";
1691 hdr_len = 16;
1692 }
1693
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1694 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1695 while (http_find_header2(hdr_val, hdr_len, msg->buf->p + msg->sol, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1696 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1697 if (wanted & TX_CON_KAL_SET)
1698 txn->flags |= TX_CON_KAL_SET;
1699 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1700 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1701 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1702 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1703 if (wanted & TX_CON_CLO_SET)
1704 txn->flags |= TX_CON_CLO_SET;
1705 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1706 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1707 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1708 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1709
1710 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1711 return;
1712
1713 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1714 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1715 hdr_val = "Connection: close";
1716 hdr_len = 17;
1717 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1718 hdr_val = "Proxy-Connection: close";
1719 hdr_len = 23;
1720 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1721 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1722 }
1723
1724 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1725 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1726 hdr_val = "Connection: keep-alive";
1727 hdr_len = 22;
1728 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1729 hdr_val = "Proxy-Connection: keep-alive";
1730 hdr_len = 28;
1731 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1732 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1733 }
1734 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1735}
1736
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1737/* 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]1738 * first byte of body, and increments msg->sov by the number of bytes parsed,
1739 * so that we know we can forward between ->som and ->sov. Note that due to
1740 * possible wrapping at the end of the buffer, it is possible that msg->sov is
1741 * lower than msg->som.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1742 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1743 * 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]1744 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1745int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1746{
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1747 const struct buffer *buf = msg->buf;
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1748 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1749 const char *ptr_old = ptr;
1750 const char *end = buf->data + buf->size;
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1751 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1752 unsigned int chunk = 0;
1753
1754 /* The chunk size is in the following form, though we are only
1755 * interested in the size and CRLF :
1756 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1757 */
1758 while (1) {
1759 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1760 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1761 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1762 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1763 if (c < 0) /* not a hex digit anymore */
1764 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1765 if (++ptr >= end)
1766 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1767 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1768 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1769 chunk = (chunk << 4) + c;
1770 }
1771
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1772 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1773 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1774 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1775
1776 while (http_is_spht[(unsigned char)*ptr]) {
1777 if (++ptr >= end)
1778 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1779 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1780 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1781 }
1782
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1783 /* Up to there, we know that at least one byte is present at *ptr. Check
1784 * for the end of chunk size.
1785 */
1786 while (1) {
1787 if (likely(HTTP_IS_CRLF(*ptr))) {
1788 /* we now have a CR or an LF at ptr */
1789 if (likely(*ptr == '\r')) {
1790 if (++ptr >= end)
1791 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1792 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1793 return 0;
1794 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1795
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1796 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1797 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1798 if (++ptr >= end)
1799 ptr = buf->data;
1800 /* done */
1801 break;
1802 }
1803 else if (*ptr == ';') {
1804 /* chunk extension, ends at next CRLF */
1805 if (++ptr >= end)
1806 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1807 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1808 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1809
1810 while (!HTTP_IS_CRLF(*ptr)) {
1811 if (++ptr >= end)
1812 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1813 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1814 return 0;
1815 }
1816 /* we have a CRLF now, loop above */
1817 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1818 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1819 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1820 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1821 }
1822
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1823 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1824 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1825 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1826 */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1827 msg->sov += ptr - ptr_old;
1828 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1829 msg->chunk_len = chunk;
1830 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1831 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1832 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1833 error:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1834 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1835 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1836}
1837
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1838/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1839 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1840 * the trailers is found, it is automatically scheduled to be forwarded,
1841 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1842 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1843 * 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]1844 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1845 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1846 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1847 * which implies that all non-trailers data have already been scheduled for
1848 * forwarding, and that the difference between msg->som and msg->sov exactly
1849 * matches the length of trailers already parsed and not forwarded. It is also
1850 * important to note that this function is designed to be able to parse wrapped
1851 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1852 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1853int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1854{
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1855 const struct buffer *buf = msg->buf;
1856
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1857 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1859 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1860 const char *ptr = b_ptr(buf, msg->next);
1861 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1862 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1863
1864 /* scan current line and stop at LF or CRLF */
1865 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1866 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1867 return 0;
1868
1869 if (*ptr == '\n') {
1870 if (!p1)
1871 p1 = ptr;
1872 p2 = ptr;
1873 break;
1874 }
1875
1876 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1877 if (p1) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1878 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1879 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1880 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1881 p1 = ptr;
1882 }
1883
1884 ptr++;
1885 if (ptr >= buf->data + buf->size)
1886 ptr = buf->data;
1887 }
1888
1889 /* after LF; point to beginning of next line */
1890 p2++;
1891 if (p2 >= buf->data + buf->size)
1892 p2 = buf->data;
1893
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1894 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1895 if (bytes < 0)
1896 bytes += buf->size;
1897
1898 /* schedule this line for forwarding */
1899 msg->sov += bytes;
1900 if (msg->sov >= buf->size)
1901 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1902
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]1903 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1904 /* LF/CRLF at beginning of line => end of trailers at p2.
1905 * Everything was scheduled for forwarding, there's nothing
1906 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1907 */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1908 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1909 msg->msg_state = HTTP_MSG_DONE;
1910 return 1;
1911 }
1912 /* OK, next line then */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1913 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1914 }
1915}
1916
1917/* This function may be called only in HTTP_MSG_DATA_CRLF. It reads the CRLF or
1918 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1919 * ->som, ->next in order to include this part into the next forwarding phase.
1920 * 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]1921 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1922 * not enough data are available, the function does not change anything and
1923 * returns zero. If a parse error is encountered, the function returns < 0 and
1924 * does not change anything. Note: this function is designed to parse wrapped
1925 * CRLF at the end of the buffer.
1926 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1927int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1928{
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1929 const struct buffer *buf = msg->buf;
1930 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1931 int bytes;
1932
1933 /* NB: we'll check data availabilty at the end. It's not a
1934 * problem because whatever we match first will be checked
1935 * against the correct length.
1936 */
1937 bytes = 1;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1938 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1939 if (*ptr == '\r') {
1940 bytes++;
1941 ptr++;
1942 if (ptr >= buf->data + buf->size)
1943 ptr = buf->data;
1944 }
1945
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]1946 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1947 return 0;
1948
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1949 if (*ptr != '\n') {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1950 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1952 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1953
1954 ptr++;
1955 if (ptr >= buf->data + buf->size)
1956 ptr = buf->data;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1957 /* prepare the CRLF to be forwarded (between ->som and ->sov) */
1958 msg->som = 0;
1959 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1960 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1961 return 1;
1962}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1963
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1964/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1965 * processing can continue on next analysers, or zero if it either needs more
1966 * data or wants to immediately abort the request (eg: timeout, error, ...). It
1967 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
1968 * when it has nothing left to do, and may remove any analyser when it wants to
1969 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1970 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]1971int http_wait_for_request(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1972{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1973 /*
1974 * We will parse the partial (or complete) lines.
1975 * We will check the request syntax, and also join multi-line
1976 * headers. An index of all the lines will be elaborated while
1977 * parsing.
1978 *
1979 * For the parsing, we use a 28 states FSM.
1980 *
1981 * Here is the information we currently have :
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1982 * req->p + msg->som = beginning of request
1983 * req->p + msg->eoh = end of processed headers / start of current one
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]1984 * msg->eol = end of current header or line (LF or CRLF)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1985 * msg->next = first non-visited byte
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1986 * req->r = end of data
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1987 *
1988 * At end of parsing, we may perform a capture of the error (if any), and
1989 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
1990 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
1991 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1992 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1993
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1994 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]1995 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1996 struct http_txn *txn = &s->txn;
1997 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]1998 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1999
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2000 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]2001 now_ms, __FUNCTION__,
2002 s,
2003 req,
2004 req->rex, req->wex,
2005 req->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2006 req->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2007 req->analysers);
2008
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2009 /* we're speaking HTTP here, so let's speak HTTP to the client */
2010 s->srv_error = http_return_srv_error;
2011
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2012 /* There's a protected area at the end of the buffer for rewriting
2013 * purposes. We don't want to start to parse the request if the
2014 * protected area is affected, because we may have to move processed
2015 * data later, which is much more complicated.
2016 */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2017 if (buffer_not_empty(req) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2018 if ((txn->flags & TX_NOT_FIRST) &&
2019 unlikely((req->flags & BF_FULL) ||
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]2020 bi_end(req) < b_ptr(req, msg->next) ||
2021 bi_end(req) > req->data + req->size - global.tune.maxrewrite)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]2022 if (req->o) {
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2023 if (req->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
2024 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2025 /* some data has still not left the buffer, wake us once that's done */
2026 buffer_dont_connect(req);
2027 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
2028 return 0;
2029 }
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]2030 if (bi_end(req) < b_ptr(req, msg->next) ||
2031 bi_end(req) > req->data + req->size - global.tune.maxrewrite)
Willy Tarreaua7fe8e52012-05-08 20:40:09 +0200[diff] [blame]2032 buffer_slow_realign(msg->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2033 }
2034
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2035 /* Note that we have the same problem with the response ; we
2036 * may want to send a redirect, error or anything which requires
2037 * some spare space. So we'll ensure that we have at least
2038 * maxrewrite bytes available in the response buffer before
2039 * processing that one. This will only affect pipelined
2040 * keep-alive requests.
2041 */
2042 if ((txn->flags & TX_NOT_FIRST) &&
2043 unlikely((s->rep->flags & BF_FULL) ||
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]2044 bi_end(s->rep) < b_ptr(s->rep, txn->rsp.next) ||
2045 bi_end(s->rep) > s->rep->data + s->rep->size - global.tune.maxrewrite)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]2046 if (s->rep->o) {
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2047 if (s->rep->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
2048 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2049 /* don't let a connection request be initiated */
2050 buffer_dont_connect(req);
Willy Tarreauff7b5882010-01-22 14:41:29 +0100[diff] [blame]2051 s->rep->flags &= ~BF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2052 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2053 return 0;
2054 }
2055 }
2056
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2057 if (likely(msg->next < req->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2058 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2059 }
2060
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2061 /* 1: we might have to print this header in debug mode */
2062 if (unlikely((global.mode & MODE_DEBUG) &&
2063 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreauc3bfeeb2010-04-16 09:14:45 +0200[diff] [blame]2064 msg->sol &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2065 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2066 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2067
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2068 sol = req->p + msg->som;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2069 eol = sol + msg->sl.rq.l;
2070 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2071
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2072 sol += hdr_idx_first_pos(&txn->hdr_idx);
2073 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2074
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2075 while (cur_idx) {
2076 eol = sol + txn->hdr_idx.v[cur_idx].len;
2077 debug_hdr("clihdr", s, sol, eol);
2078 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2079 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2080 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2081 }
2082
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2083
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2084 /*
2085 * Now we quickly check if we have found a full valid request.
2086 * If not so, we check the FD and buffer states before leaving.
2087 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2088 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2089 * requests are checked first. When waiting for a second request
2090 * on a keep-alive session, if we encounter and error, close, t/o,
2091 * we note the error in the session flags but don't set any state.
2092 * Since the error will be noted there, it will not be counted by
2093 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2094 * Last, we may increase some tracked counters' http request errors on
2095 * the cases that are deliberately the client's fault. For instance,
2096 * a timeout or connection reset is not counted as an error. However
2097 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2098 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2099
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2100 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2101 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2102 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2103 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2104 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2105 session_inc_http_req_ctr(s);
2106 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2107 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2108 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2109 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2110
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2111 /* 1: Since we are in header mode, if there's no space
2112 * left for headers, we won't be able to free more
2113 * later, so the session will never terminate. We
2114 * must terminate it now.
2115 */
2116 if (unlikely(req->flags & BF_FULL)) {
2117 /* FIXME: check if URI is set and return Status
2118 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2119 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2120 session_inc_http_req_ctr(s);
2121 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2122 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2123 if (msg->err_pos < 0)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2124 msg->err_pos = req->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2125 goto return_bad_req;
2126 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2127
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2128 /* 2: have we encountered a read error ? */
2129 else if (req->flags & BF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2130 if (!(s->flags & SN_ERR_MASK))
2131 s->flags |= SN_ERR_CLICL;
2132
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2133 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2134 goto failed_keep_alive;
2135
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2136 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2137 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2138 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]2139 session_inc_http_err_ctr(s);
2140 }
2141
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2142 msg->msg_state = HTTP_MSG_ERROR;
2143 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2144
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2145 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2146 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2147 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2148 if (s->listener->counters)
2149 s->listener->counters->failed_req++;
2150
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2151 if (!(s->flags & SN_FINST_MASK))
2152 s->flags |= SN_FINST_R;
2153 return 0;
2154 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2155
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2156 /* 3: has the read timeout expired ? */
2157 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]2158 if (!(s->flags & SN_ERR_MASK))
2159 s->flags |= SN_ERR_CLITO;
2160
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2161 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2162 goto failed_keep_alive;
2163
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2164 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2165 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2166 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]2167 session_inc_http_err_ctr(s);
2168 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2169 txn->status = 408;
2170 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
2171 msg->msg_state = HTTP_MSG_ERROR;
2172 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2173
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2174 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2175 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2176 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2177 if (s->listener->counters)
2178 s->listener->counters->failed_req++;
2179
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2180 if (!(s->flags & SN_FINST_MASK))
2181 s->flags |= SN_FINST_R;
2182 return 0;
2183 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2184
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2185 /* 4: have we encountered a close ? */
2186 else if (req->flags & BF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2187 if (!(s->flags & SN_ERR_MASK))
2188 s->flags |= SN_ERR_CLICL;
2189
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2190 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2191 goto failed_keep_alive;
2192
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2193 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2194 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]2195 txn->status = 400;
2196 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2197 msg->msg_state = HTTP_MSG_ERROR;
2198 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2199
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2200 session_inc_http_err_ctr(s);
2201 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2202 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2203 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2204 if (s->listener->counters)
2205 s->listener->counters->failed_req++;
2206
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2207 if (!(s->flags & SN_FINST_MASK))
2208 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2209 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2210 }
2211
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2212 buffer_dont_connect(req);
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2213 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreauff7b5882010-01-22 14:41:29 +0100[diff] [blame]2214 s->rep->flags &= ~BF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2215#ifdef TCP_QUICKACK
2216 if (s->listener->options & LI_O_NOQUICKACK) {
2217 /* We need more data, we have to re-enable quick-ack in case we
2218 * previously disabled it, otherwise we might cause the client
2219 * to delay next data.
2220 */
2221 setsockopt(s->si[0].fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
2222 }
2223#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2224
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2225 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2226 /* If the client starts to talk, let's fall back to
2227 * request timeout processing.
2228 */
2229 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2230 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2231 }
2232
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2233 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2234 if (!tick_isset(req->analyse_exp)) {
2235 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2236 (txn->flags & TX_WAIT_NEXT_RQ) &&
2237 tick_isset(s->be->timeout.httpka))
2238 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2239 else
2240 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2241 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2242
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2243 /* we're not ready yet */
2244 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2245
2246 failed_keep_alive:
2247 /* Here we process low-level errors for keep-alive requests. In
2248 * short, if the request is not the first one and it experiences
2249 * a timeout, read error or shutdown, we just silently close so
2250 * that the client can try again.
2251 */
2252 txn->status = 0;
2253 msg->msg_state = HTTP_MSG_RQBEFORE;
2254 req->analysers = 0;
2255 s->logs.logwait = 0;
Willy Tarreauff7b5882010-01-22 14:41:29 +0100[diff] [blame]2256 s->rep->flags &= ~BF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2257 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2258 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2259 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2260
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2261 /* OK now we have a complete HTTP request with indexed headers. Let's
2262 * complete the request parsing by setting a few fields we will need
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2263 * later. At this point, we have the last CRLF at req->data + msg->eoh.
2264 * 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]2265 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2266 * byte after the last LF. msg->sov points to the first byte of data.
2267 * msg->eol cannot be trusted because it may have been left uninitialized
2268 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2269 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2270
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2271 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2272 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2273
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2274 if (txn->flags & TX_WAIT_NEXT_RQ) {
2275 /* kill the pending keep-alive timeout */
2276 txn->flags &= ~TX_WAIT_NEXT_RQ;
2277 req->analyse_exp = TICK_ETERNITY;
2278 }
2279
2280
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2281 /* Maybe we found in invalid header name while we were configured not
2282 * to block on that, so we have to capture it now.
2283 */
2284 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2285 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]2286
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2287 /*
2288 * 1: identify the method
2289 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2290 txn->meth = find_http_meth(req->p + msg->sol, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2291
2292 /* we can make use of server redirect on GET and HEAD */
2293 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2294 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2295
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2296 /*
2297 * 2: check if the URI matches the monitor_uri.
2298 * We have to do this for every request which gets in, because
2299 * the monitor-uri is defined by the frontend.
2300 */
2301 if (unlikely((s->fe->monitor_uri_len != 0) &&
2302 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2303 !memcmp(req->p + msg->sol + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2304 s->fe->monitor_uri,
2305 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2306 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2307 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2308 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2309 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2310
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2311 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2312 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2313
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2314 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2315 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2316 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]2317
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2318 ret = acl_pass(ret);
2319 if (cond->pol == ACL_COND_UNLESS)
2320 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2321
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2322 if (ret) {
2323 /* we fail this request, let's return 503 service unavail */
2324 txn->status = 503;
2325 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
2326 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2327 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2328 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2329
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2330 /* nothing to fail, let's reply normaly */
2331 txn->status = 200;
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]2332 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2333 goto return_prx_cond;
2334 }
2335
2336 /*
2337 * 3: Maybe we have to copy the original REQURI for the logs ?
2338 * Note: we cannot log anymore if the request has been
2339 * classified as invalid.
2340 */
2341 if (unlikely(s->logs.logwait & LW_REQ)) {
2342 /* we have a complete HTTP request that we must log */
2343 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2344 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2345
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2346 if (urilen >= REQURI_LEN)
2347 urilen = REQURI_LEN - 1;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2348 memcpy(txn->uri, &req->p[msg->som], urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2349 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2350
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2351 if (!(s->logs.logwait &= ~LW_REQ))
2352 s->do_log(s);
2353 } else {
2354 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2355 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2356 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2357
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2358 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2359 s->unique_id = pool_alloc2(pool2_uniqueid);
2360 }
2361
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2362 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2363 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2364 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2365
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2366 /* ... and check if the request is HTTP/1.1 or above */
2367 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2368 ((req->p[msg->sol + msg->sl.rq.v + 5] > '1') ||
2369 ((req->p[msg->sol + msg->sl.rq.v + 5] == '1') &&
2370 (req->p[msg->sol + msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2371 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2372
2373 /* "connection" has not been parsed yet */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2374 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2375
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2376 /* if the frontend has "option http-use-proxy-header", we'll check if
2377 * we have what looks like a proxied connection instead of a connection,
2378 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2379 * Note that this is *not* RFC-compliant, however browsers and proxies
2380 * happen to do that despite being non-standard :-(
2381 * We consider that a request not beginning with either '/' or '*' is
2382 * a proxied connection, which covers both "scheme://location" and
2383 * CONNECT ip:port.
2384 */
2385 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2386 req->p[msg->sol + msg->sl.rq.u] != '/' && req->p[msg->sol + msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2387 txn->flags |= TX_USE_PX_CONN;
2388
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2389 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2390 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2391
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2392 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2393 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2394 capture_headers(req->p + msg->sol, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2395 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2396
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2397 /* 6: determine the transfer-length.
2398 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2399 * the presence of a message-body in a REQUEST and its transfer length
2400 * must be determined that way (in order of precedence) :
2401 * 1. The presence of a message-body in a request is signaled by the
2402 * inclusion of a Content-Length or Transfer-Encoding header field
2403 * in the request's header fields. When a request message contains
2404 * both a message-body of non-zero length and a method that does
2405 * not define any semantics for that request message-body, then an
2406 * origin server SHOULD either ignore the message-body or respond
2407 * with an appropriate error message (e.g., 413). A proxy or
2408 * gateway, when presented the same request, SHOULD either forward
2409 * the request inbound with the message- body or ignore the
2410 * message-body when determining a response.
2411 *
2412 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2413 * and the "chunked" transfer-coding (Section 6.2) is used, the
2414 * transfer-length is defined by the use of this transfer-coding.
2415 * If a Transfer-Encoding header field is present and the "chunked"
2416 * transfer-coding is not present, the transfer-length is defined
2417 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2418 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2419 * 3. If a Content-Length header field is present, its decimal value in
2420 * OCTETs represents both the entity-length and the transfer-length.
2421 * If a message is received with both a Transfer-Encoding header
2422 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2423 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2424 * 4. By the server closing the connection. (Closing the connection
2425 * cannot be used to indicate the end of a request body, since that
2426 * would leave no possibility for the server to send back a response.)
2427 *
2428 * Whenever a transfer-coding is applied to a message-body, the set of
2429 * transfer-codings MUST include "chunked", unless the message indicates
2430 * it is terminated by closing the connection. When the "chunked"
2431 * transfer-coding is used, it MUST be the last transfer-coding applied
2432 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2433 */
2434
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2435 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2436 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2437 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2438 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2439 http_find_header2("Transfer-Encoding", 17, req->p + msg->sol, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2440 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2441 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2442 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2443 /* bad transfer-encoding (chunked followed by something else) */
2444 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2445 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2446 break;
2447 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2448 }
2449
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2450 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2451 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2452 http_find_header2("Content-Length", 14, req->p + msg->sol, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2453 signed long long cl;
2454
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2455 if (!ctx.vlen) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2456 msg->err_pos = ctx.line + ctx.val - req->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2457 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2458 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2459
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2460 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2461 msg->err_pos = ctx.line + ctx.val - req->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2462 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2463 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2464
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2465 if (cl < 0) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2466 msg->err_pos = ctx.line + ctx.val - req->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2467 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2468 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2469
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2470 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2471 msg->err_pos = ctx.line + ctx.val - req->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2472 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2473 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2474
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2475 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2476 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2477 }
2478
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2479 /* bodyless requests have a known length */
2480 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2481 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2482
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2483 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2484 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2485 req->analyse_exp = TICK_ETERNITY;
2486 return 1;
2487
2488 return_bad_req:
2489 /* We centralize bad requests processing here */
2490 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2491 /* we detected a parsing error. We want to archive this request
2492 * in the dedicated proxy area for later troubleshooting.
2493 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2494 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]2495 }
2496
2497 txn->req.msg_state = HTTP_MSG_ERROR;
2498 txn->status = 400;
2499 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2500
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2501 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2502 if (s->listener->counters)
2503 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2504
2505 return_prx_cond:
2506 if (!(s->flags & SN_ERR_MASK))
2507 s->flags |= SN_ERR_PRXCOND;
2508 if (!(s->flags & SN_FINST_MASK))
2509 s->flags |= SN_FINST_R;
2510
2511 req->analysers = 0;
2512 req->analyse_exp = TICK_ETERNITY;
2513 return 0;
2514}
2515
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2516/* We reached the stats page through a POST request.
2517 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2518 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2519 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2520int 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]2521{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2522 struct proxy *px = NULL;
2523 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2524
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2525 char key[LINESIZE];
2526 int action = ST_ADM_ACTION_NONE;
2527 int reprocess = 0;
2528
2529 int total_servers = 0;
2530 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2531
2532 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2533 char *st_cur_param = NULL;
2534 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2535
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2536 first_param = req->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2537 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2538
2539 cur_param = next_param = end_params;
2540
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2541 if (end_params >= req->data + req->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2542 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2543 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2544 return 1;
2545 }
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2546 else if (end_params > req->p + req->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2547 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2548 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2549 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2550 }
2551
2552 *end_params = '\0';
2553
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2554 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2555
2556 /*
2557 * Parse the parameters in reverse order to only store the last value.
2558 * From the html form, the backend and the action are at the end.
2559 */
2560 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2561 char *value;
2562 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2563
2564 cur_param--;
2565 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2566 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2567 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2568 poffset = (cur_param != first_param ? 1 : 0);
2569 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2570 if ((plen > 0) && (plen <= sizeof(key))) {
2571 strncpy(key, cur_param + poffset, plen);
2572 key[plen - 1] = '\0';
2573 } else {
2574 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2575 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2576 }
2577
2578 /* Parse the value */
2579 value = key;
2580 while (*value != '\0' && *value != '=') {
2581 value++;
2582 }
2583 if (*value == '=') {
2584 /* Ok, a value is found, we can mark the end of the key */
2585 *value++ = '\0';
2586 }
2587
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2588 if (!url_decode(key) || !url_decode(value))
2589 break;
2590
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2591 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2592 if (!px && (strcmp(key, "b") == 0)) {
2593 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2594 /* the backend name is unknown or ambiguous (duplicate names) */
2595 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2596 goto out;
2597 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2598 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2599 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2600 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2601 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2602 }
2603 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2604 action = ST_ADM_ACTION_ENABLE;
2605 }
2606 else {
2607 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2608 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2609 }
2610 }
2611 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2612 if (!(px && action)) {
2613 /*
2614 * Indicates that we'll need to reprocess the parameters
2615 * as soon as backend and action are known
2616 */
2617 if (!reprocess) {
2618 st_cur_param = cur_param;
2619 st_next_param = next_param;
2620 }
2621 reprocess = 1;
2622 }
2623 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2624 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2625 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2626 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2627 /* Not already in maintenance, we can change the server state */
2628 sv->state |= SRV_MAINTAIN;
2629 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2630 altered_servers++;
2631 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2632 }
2633 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2634 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2635 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2636 /* Already in maintenance, we can change the server state */
2637 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2638 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2639 altered_servers++;
2640 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2641 }
2642 break;
2643 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2644 } else {
2645 /* the server name is unknown or ambiguous (duplicate names) */
2646 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2647 }
2648 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2649 if (reprocess && px && action) {
2650 /* Now, we know the backend and the action chosen by the user.
2651 * We can safely restart from the first server parameter
2652 * to reprocess them
2653 */
2654 cur_param = st_cur_param;
2655 next_param = st_next_param;
2656 reprocess = 0;
2657 goto reprocess_servers;
2658 }
2659
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2660 next_param = cur_param;
2661 }
2662 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2663
2664 if (total_servers == 0) {
2665 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2666 }
2667 else if (altered_servers == 0) {
2668 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2669 }
2670 else if (altered_servers == total_servers) {
2671 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2672 }
2673 else {
2674 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2675 }
2676 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2677 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2678}
2679
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2680/* returns a pointer to the first rule which forbids access (deny or http_auth),
2681 * or NULL if everything's OK.
2682 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2683static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2684http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2685{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2686 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2687
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2688 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2689 int ret = 1;
2690
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2691 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2692 continue;
2693
2694 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2695 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2696 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]2697 ret = acl_pass(ret);
2698
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2699 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2700 ret = !ret;
2701 }
2702
2703 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2704 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2705 return NULL; /* no problem */
2706 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2707 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2708 }
2709 }
2710 return NULL;
2711}
2712
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2713/* This stream analyser runs all HTTP request processing which is common to
2714 * frontends and backends, which means blocking ACLs, filters, connection-close,
2715 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2716 * 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]2717 * either needs more data or wants to immediately abort the request (eg: deny,
2718 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2719 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2720int 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]2721{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2722 struct http_txn *txn = &s->txn;
2723 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2724 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2725 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2726 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2727 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2728 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2729
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2730 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2731 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2732 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2733 return 0;
2734 }
2735
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2736 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2737 req->analyse_exp = TICK_ETERNITY;
2738
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2739 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]2740 now_ms, __FUNCTION__,
2741 s,
2742 req,
2743 req->rex, req->wex,
2744 req->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2745 req->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2746 req->analysers);
2747
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2748 /* first check whether we have some ACLs set to block this request */
2749 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2750 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]2751
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2752 ret = acl_pass(ret);
2753 if (cond->pol == ACL_COND_UNLESS)
2754 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2755
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2756 if (ret) {
2757 txn->status = 403;
2758 /* let's log the request time */
2759 s->logs.tv_request = now;
2760 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2761 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2762 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2763 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2764 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2765
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2766 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2767 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]2768
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2769 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2770 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2771 do_stats = stats_check_uri(s->rep->prod, txn, px);
2772 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2773 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]2774 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2775 else
2776 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2777
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2778 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2779 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]2780 txn->status = 403;
2781 s->logs.tv_request = now;
2782 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2783 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]2784 s->fe->fe_counters.denied_req++;
2785 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
2786 s->be->be_counters.denied_req++;
2787 if (s->listener->counters)
2788 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2789 goto return_prx_cond;
2790 }
2791
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2792 /* try headers filters */
2793 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]2794 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2795 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2796
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2797 /* has the request been denied ? */
2798 if (txn->flags & TX_CLDENY) {
2799 /* no need to go further */
2800 txn->status = 403;
2801 /* let's log the request time */
2802 s->logs.tv_request = now;
2803 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2804 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2805 goto return_prx_cond;
2806 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2807
2808 /* When a connection is tarpitted, we use the tarpit timeout,
2809 * which may be the same as the connect timeout if unspecified.
2810 * If unset, then set it to zero because we really want it to
2811 * eventually expire. We build the tarpit as an analyser.
2812 */
2813 if (txn->flags & TX_CLTARPIT) {
2814 buffer_erase(s->req);
2815 /* wipe the request out so that we can drop the connection early
2816 * if the client closes first.
2817 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2818 buffer_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2819 req->analysers = 0; /* remove switching rules etc... */
2820 req->analysers |= AN_REQ_HTTP_TARPIT;
2821 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2822 if (!req->analyse_exp)
2823 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2824 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2825 return 1;
2826 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2827 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2828
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2829 /* Until set to anything else, the connection mode is set as TUNNEL. It will
2830 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2831 * Option httpclose by itself does not set a mode, it remains a tunnel mode
2832 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2833 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
2834 * avoid to redo the same work if FE and BE have the same settings (common).
2835 * The method consists in checking if options changed between the two calls
2836 * (implying that either one is non-null, or one of them is non-null and we
2837 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2838 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2839
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]2840 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
2841 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
2842 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
2843 (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]2844 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2845
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]2846 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
2847 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2848 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2849 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
2850 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2851 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2852 tmp = TX_CON_WANT_CLO;
2853
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2854 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2855 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2856
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2857 if (!(txn->flags & TX_HDR_CONN_PRS)) {
2858 /* parse the Connection header and possibly clean it */
2859 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2860 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]2861 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2862 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2863 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2864 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2865 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2866 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2867 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2868
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2869 /* check if client or config asks for explicit close in KAL/SCL */
2870 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2871 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2872 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2873 (!(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]2874 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2875 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]2876 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2877 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2878 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2879
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2880 /* we can be blocked here because the request needs to be authenticated,
2881 * either to pass or to access stats.
2882 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2883 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]2884 struct chunk msg;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2885 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2886
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2887 if (!realm)
2888 realm = do_stats?STATS_DEFAULT_REALM:px->id;
2889
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]2890 sprintf(trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2891 chunk_initlen(&msg, trash, sizeof(trash), strlen(trash));
2892 txn->status = 401;
2893 stream_int_retnclose(req->prod, &msg);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2894 /* on 401 we still count one error, because normal browsing
2895 * won't significantly increase the counter but brute force
2896 * attempts will.
2897 */
2898 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2899 goto return_prx_cond;
2900 }
2901
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2902 /* add request headers from the rule sets in the same order */
2903 list_for_each_entry(wl, &px->req_add, list) {
2904 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2905 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]2906 ret = acl_pass(ret);
2907 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
2908 ret = !ret;
2909 if (!ret)
2910 continue;
2911 }
2912
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2913 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2914 goto return_bad_req;
2915 }
2916
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2917 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2918 struct stats_admin_rule *stats_admin_rule;
2919
2920 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2921 * FIXME!!! that one is rather dangerous, we want to
2922 * make it follow standard rules (eg: clear req->analysers).
2923 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2924
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2925 /* now check whether we have some admin rules for this request */
2926 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2927 int ret = 1;
2928
2929 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2930 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]2931 ret = acl_pass(ret);
2932 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2933 ret = !ret;
2934 }
2935
2936 if (ret) {
2937 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2938 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2939 break;
2940 }
2941 }
2942
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2943 /* Was the status page requested with a POST ? */
2944 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2945 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2946 if (msg->msg_state < HTTP_MSG_100_SENT) {
2947 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2948 * send an HTTP/1.1 100 Continue intermediate response.
2949 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2950 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2951 struct hdr_ctx ctx;
2952 ctx.idx = 0;
2953 /* Expect is allowed in 1.1, look for it */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2954 if (http_find_header2("Expect", 6, req->p + msg->sol, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2955 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]2956 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2957 }
2958 }
2959 msg->msg_state = HTTP_MSG_100_SENT;
2960 s->logs.tv_request = now; /* update the request timer to reflect full request */
2961 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2962 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2963 /* we need more data */
2964 req->analysers |= an_bit;
2965 buffer_dont_connect(req);
2966 return 0;
2967 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2968 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2969 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2970 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2971 }
2972
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2973 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2974 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]2975 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau7b7a8e92011-03-27 19:53:06 +0200[diff] [blame]2976 copy_target(&s->target, &s->rep->prod->target); // for logging only
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]2977 s->rep->prod->applet.private = s;
2978 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2979 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2980 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
2981 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2982
2983 return 0;
2984
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2985 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2986
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2987 /* check whether we have some ACLs set to redirect this request */
2988 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]2989 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2990
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]2991 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2992 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]2993 ret = acl_pass(ret);
2994 if (rule->cond->pol == ACL_COND_UNLESS)
2995 ret = !ret;
2996 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2997
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2998 if (ret) {
Willy Tarreau3bb9c232010-01-03 12:24:37 +0100[diff] [blame]2999 struct chunk rdr = { .str = trash, .size = sizeof(trash), .len = 0 };
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3000 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3001
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3002 /* build redirect message */
3003 switch(rule->code) {
3004 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3005 msg_fmt = HTTP_303;
3006 break;
3007 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3008 msg_fmt = HTTP_301;
3009 break;
3010 case 302:
3011 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3012 msg_fmt = HTTP_302;
3013 break;
3014 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3015
Willy Tarreau3bb9c232010-01-03 12:24:37 +0100[diff] [blame]3016 if (unlikely(!chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3017 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3018
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3019 switch(rule->type) {
3020 case REDIRECT_TYPE_PREFIX: {
3021 const char *path;
3022 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3023
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3024 path = http_get_path(txn);
3025 /* build message using path */
3026 if (path) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]3027 pathlen = txn->req.sl.rq.u_l + (req->p + txn->req.sol + txn->req.sl.rq.u) - path;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3028 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3029 int qs = 0;
3030 while (qs < pathlen) {
3031 if (path[qs] == '?') {
3032 pathlen = qs;
3033 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3034 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3035 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3036 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3037 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3038 } else {
3039 path = "/";
3040 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3041 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3042
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3043 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3044 goto return_bad_req;
3045
3046 /* add prefix. Note that if prefix == "/", we don't want to
3047 * add anything, otherwise it makes it hard for the user to
3048 * configure a self-redirection.
3049 */
3050 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3051 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3052 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3053 }
3054
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3055 /* add path */
3056 memcpy(rdr.str + rdr.len, path, pathlen);
3057 rdr.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3058
3059 /* append a slash at the end of the location is needed and missing */
3060 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3061 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3062 if (rdr.len > rdr.size - 5)
3063 goto return_bad_req;
3064 rdr.str[rdr.len] = '/';
3065 rdr.len++;
3066 }
3067
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3068 break;
3069 }
3070 case REDIRECT_TYPE_LOCATION:
3071 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3072 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3073 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3074
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3075 /* add location */
3076 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3077 rdr.len += rule->rdr_len;
3078 break;
3079 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3080
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3081 if (rule->cookie_len) {
3082 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
3083 rdr.len += 14;
3084 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
3085 rdr.len += rule->cookie_len;
3086 memcpy(rdr.str + rdr.len, "\r\n", 2);
3087 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3088 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3089
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3090 /* add end of headers and the keep-alive/close status.
3091 * We may choose to set keep-alive if the Location begins
3092 * with a slash, because the client will come back to the
3093 * same server.
3094 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3095 txn->status = rule->code;
3096 /* let's log the request time */
3097 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3098
3099 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3100 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3101 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3102 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3103 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3104 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3105 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3106 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3107 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: keep-alive", 30);
3108 rdr.len += 30;
3109 } else {
3110 memcpy(rdr.str + rdr.len, "\r\nConnection: keep-alive", 24);
3111 rdr.len += 24;
3112 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3113 }
3114 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
3115 rdr.len += 4;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3116 bo_inject(req->prod->ob, rdr.str, rdr.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3117 /* "eat" the request */
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3118 bi_fast_delete(req, msg->sov - msg->som);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3119 msg->som = msg->sov;
3120 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3121 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3122 txn->req.msg_state = HTTP_MSG_CLOSED;
3123 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3124 break;
3125 } else {
3126 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3127 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3128 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3129 rdr.len += 29;
3130 } else {
3131 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
3132 rdr.len += 23;
3133 }
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]3134 stream_int_retnclose(req->prod, &rdr);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3135 goto return_prx_cond;
3136 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3137 }
3138 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3139
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3140 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3141 * If this happens, then the data will not come immediately, so we must
3142 * send all what we have without waiting. Note that due to the small gain
3143 * in waiting for the body of the request, it's easier to simply put the
3144 * BF_SEND_DONTWAIT flag any time. It's a one-shot flag so it will remove
3145 * itself once used.
3146 */
3147 req->flags |= BF_SEND_DONTWAIT;
3148
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3149 /* that's OK for us now, let's move on to next analysers */
3150 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3151
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3152 return_bad_req:
3153 /* We centralize bad requests processing here */
3154 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3155 /* we detected a parsing error. We want to archive this request
3156 * in the dedicated proxy area for later troubleshooting.
3157 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3158 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]3159 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3160
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3161 txn->req.msg_state = HTTP_MSG_ERROR;
3162 txn->status = 400;
3163 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3164
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3165 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3166 if (s->listener->counters)
3167 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3168
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3169 return_prx_cond:
3170 if (!(s->flags & SN_ERR_MASK))
3171 s->flags |= SN_ERR_PRXCOND;
3172 if (!(s->flags & SN_FINST_MASK))
3173 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3174
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3175 req->analysers = 0;
3176 req->analyse_exp = TICK_ETERNITY;
3177 return 0;
3178}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3179
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3180/* This function performs all the processing enabled for the current request.
3181 * It returns 1 if the processing can continue on next analysers, or zero if it
3182 * needs more data, encounters an error, or wants to immediately abort the
3183 * request. It relies on buffers flags, and updates s->req->analysers.
3184 */
3185int http_process_request(struct session *s, struct buffer *req, int an_bit)
3186{
3187 struct http_txn *txn = &s->txn;
3188 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3189
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3190 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3191 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]3192 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3193 return 0;
3194 }
3195
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3196 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]3197 now_ms, __FUNCTION__,
3198 s,
3199 req,
3200 req->rex, req->wex,
3201 req->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3202 req->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3203 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3204
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3205 /*
3206 * Right now, we know that we have processed the entire headers
3207 * and that unwanted requests have been filtered out. We can do
3208 * whatever we want with the remaining request. Also, now we
3209 * may have separate values for ->fe, ->be.
3210 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3211
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3212 /*
3213 * If HTTP PROXY is set we simply get remote server address
3214 * parsing incoming request.
3215 */
3216 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]3217 url2sa(req->p + msg->sol + msg->sl.rq.u, msg->sl.rq.u_l, &s->req->cons->addr.to);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3218 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3219
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3220 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3221 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3222 * Note that doing so might move headers in the request, but
3223 * the fields will stay coherent and the URI will not move.
3224 * This should only be performed in the backend.
3225 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3226 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3227 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3228 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3229
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3230 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3231 * 8: the appsession cookie was looked up very early in 1.2,
3232 * so let's do the same now.
3233 */
3234
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3235 /* It needs to look into the URI unless persistence must be ignored */
3236 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]3237 get_srv_from_appsession(s, req->p + msg->sol + msg->sl.rq.u, msg->sl.rq.u_l);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3238 }
3239
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3240 /* add unique-id if "header-unique-id" is specified */
3241
3242 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3243 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3244
3245 if (s->fe->header_unique_id && s->unique_id) {
3246 int ret = snprintf(trash, global.tune.bufsize, "%s: %s", s->fe->header_unique_id, s->unique_id);
3247 if (ret < 0 || ret > global.tune.bufsize)
3248 goto return_bad_req;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3249 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, trash) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3250 goto return_bad_req;
3251 }
3252
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3253 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3254 * 9: add X-Forwarded-For if either the frontend or the backend
3255 * asks for it.
3256 */
3257 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3258 struct hdr_ctx ctx = { .idx = 0 };
3259
3260 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]3261 http_find_header2(s->be->fwdfor_hdr_name, s->be->fwdfor_hdr_len, req->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3262 /* The header is set to be added only if none is present
3263 * and we found it, so don't do anything.
3264 */
3265 }
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3266 else if (s->req->prod->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3267 /* Add an X-Forwarded-For header unless the source IP is
3268 * in the 'except' network range.
3269 */
3270 if ((!s->fe->except_mask.s_addr ||
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3271 (((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]3272 != s->fe->except_net.s_addr) &&
3273 (!s->be->except_mask.s_addr ||
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3274 (((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]3275 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3276 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3277 unsigned char *pn;
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3278 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3279
3280 /* Note: we rely on the backend to get the header name to be used for
3281 * x-forwarded-for, because the header is really meant for the backends.
3282 * However, if the backend did not specify any option, we have to rely
3283 * on the frontend's header name.
3284 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3285 if (s->be->fwdfor_hdr_len) {
3286 len = s->be->fwdfor_hdr_len;
3287 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3288 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3289 len = s->fe->fwdfor_hdr_len;
3290 memcpy(trash, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3291 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3292 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]3293
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3294 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3295 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3296 }
3297 }
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3298 else if (s->req->prod->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3299 /* FIXME: for the sake of completeness, we should also support
3300 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3301 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3302 int len;
3303 char pn[INET6_ADDRSTRLEN];
3304 inet_ntop(AF_INET6,
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3305 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3306 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3307
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3308 /* Note: we rely on the backend to get the header name to be used for
3309 * x-forwarded-for, because the header is really meant for the backends.
3310 * However, if the backend did not specify any option, we have to rely
3311 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3312 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3313 if (s->be->fwdfor_hdr_len) {
3314 len = s->be->fwdfor_hdr_len;
3315 memcpy(trash, s->be->fwdfor_hdr_name, len);
3316 } else {
3317 len = s->fe->fwdfor_hdr_len;
3318 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3319 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3320 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3321
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3322 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3323 goto return_bad_req;
3324 }
3325 }
3326
3327 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3328 * 10: add X-Original-To if either the frontend or the backend
3329 * asks for it.
3330 */
3331 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3332
3333 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3334 if (s->req->prod->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3335 /* Add an X-Original-To header unless the destination IP is
3336 * in the 'except' network range.
3337 */
Willy Tarreau59b94792012-05-11 16:16:40 +0200[diff] [blame]3338 si_get_to_addr(s->req->prod);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3339
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3340 if (s->req->prod->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3341 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3342 (((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]3343 != s->fe->except_to.s_addr) &&
3344 (!s->be->except_mask_to.s_addr ||
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3345 (((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]3346 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3347 int len;
3348 unsigned char *pn;
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]3349 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3350
3351 /* Note: we rely on the backend to get the header name to be used for
3352 * x-original-to, because the header is really meant for the backends.
3353 * However, if the backend did not specify any option, we have to rely
3354 * on the frontend's header name.
3355 */
3356 if (s->be->orgto_hdr_len) {
3357 len = s->be->orgto_hdr_len;
3358 memcpy(trash, s->be->orgto_hdr_name, len);
3359 } else {
3360 len = s->fe->orgto_hdr_len;
3361 memcpy(trash, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3362 }
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3363 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
3364
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3365 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3366 goto return_bad_req;
3367 }
3368 }
3369 }
3370
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3371 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set. */
3372 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3373 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3374 unsigned int want_flags = 0;
3375
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3376 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3377 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3378 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3379 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3380 want_flags |= TX_CON_CLO_SET;
3381 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3382 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3383 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3384 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3385 want_flags |= TX_CON_KAL_SET;
3386 }
3387
3388 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3389 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3390 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3391
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3392
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3393 /* If we have no server assigned yet and we're balancing on url_param
3394 * with a POST request, we may be interested in checking the body for
3395 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3396 */
3397 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3398 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3399 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3400 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3401 buffer_dont_connect(req);
3402 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3403 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3404
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3405 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3406 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3407#ifdef TCP_QUICKACK
3408 /* We expect some data from the client. Unless we know for sure
3409 * we already have a full request, we have to re-enable quick-ack
3410 * in case we previously disabled it, otherwise we might cause
3411 * the client to delay further data.
3412 */
3413 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3414 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3415 (msg->body_len > req->i - txn->req.eoh - 2)))
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3416 setsockopt(s->si[0].fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
3417#endif
3418 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3419
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3420 /*************************************************************
3421 * OK, that's finished for the headers. We have done what we *
3422 * could. Let's switch to the DATA state. *
3423 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3424 req->analyse_exp = TICK_ETERNITY;
3425 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3426
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3427 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3428 /* OK let's go on with the BODY now */
3429 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3430
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3431 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3432 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3433 /* we detected a parsing error. We want to archive this request
3434 * in the dedicated proxy area for later troubleshooting.
3435 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3436 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]3437 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3438
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3439 txn->req.msg_state = HTTP_MSG_ERROR;
3440 txn->status = 400;
3441 req->analysers = 0;
3442 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3443
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3444 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3445 if (s->listener->counters)
3446 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3447
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3448 if (!(s->flags & SN_ERR_MASK))
3449 s->flags |= SN_ERR_PRXCOND;
3450 if (!(s->flags & SN_FINST_MASK))
3451 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3452 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3453}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3454
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3455/* This function is an analyser which processes the HTTP tarpit. It always
3456 * returns zero, at the beginning because it prevents any other processing
3457 * from occurring, and at the end because it terminates the request.
3458 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3459int http_process_tarpit(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3460{
3461 struct http_txn *txn = &s->txn;
3462
3463 /* This connection is being tarpitted. The CLIENT side has
3464 * already set the connect expiration date to the right
3465 * timeout. We just have to check that the client is still
3466 * there and that the timeout has not expired.
3467 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]3468 buffer_dont_connect(req);
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3469 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
3470 !tick_is_expired(req->analyse_exp, now_ms))
3471 return 0;
3472
3473 /* We will set the queue timer to the time spent, just for
3474 * logging purposes. We fake a 500 server error, so that the
3475 * attacker will not suspect his connection has been tarpitted.
3476 * It will not cause trouble to the logs because we can exclude
3477 * the tarpitted connections by filtering on the 'PT' status flags.
3478 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3479 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3480
3481 txn->status = 500;
3482 if (req->flags != BF_READ_ERROR)
3483 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
3484
3485 req->analysers = 0;
3486 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3487
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3488 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3489 if (s->listener->counters)
3490 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3491
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3492 if (!(s->flags & SN_ERR_MASK))
3493 s->flags |= SN_ERR_PRXCOND;
3494 if (!(s->flags & SN_FINST_MASK))
3495 s->flags |= SN_FINST_T;
3496 return 0;
3497}
3498
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3499/* This function is an analyser which processes the HTTP request body. It looks
3500 * for parameters to be used for the load balancing algorithm (url_param). It
3501 * must only be called after the standard HTTP request processing has occurred,
3502 * because it expects the request to be parsed. It returns zero if it needs to
3503 * read more data, or 1 once it has completed its analysis.
3504 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3505int http_process_request_body(struct session *s, struct buffer *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3506{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3507 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3508 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3509 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3510
3511 /* We have to parse the HTTP request body to find any required data.
3512 * "balance url_param check_post" should have been the only way to get
3513 * into this. We were brought here after HTTP header analysis, so all
3514 * related structures are ready.
3515 */
3516
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3517 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3518 goto missing_data;
3519
3520 if (msg->msg_state < HTTP_MSG_100_SENT) {
3521 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3522 * send an HTTP/1.1 100 Continue intermediate response.
3523 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3524 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3525 struct hdr_ctx ctx;
3526 ctx.idx = 0;
3527 /* Expect is allowed in 1.1, look for it */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]3528 if (http_find_header2("Expect", 6, req->p + msg->sol, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3529 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3530 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3531 }
3532 }
3533 msg->msg_state = HTTP_MSG_100_SENT;
3534 }
3535
3536 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3537 /* we have msg->sov which points to the first byte of message body.
3538 * msg->som still points to the beginning of the message. We must
3539 * save the body in msg->next because it survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3540 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3541 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3542
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3543 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3544 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3545 else
3546 msg->msg_state = HTTP_MSG_DATA;
3547 }
3548
3549 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3550 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3551 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3552 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3553 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3554 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3555
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3556 if (!ret)
3557 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3558 else if (ret < 0) {
3559 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3560 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3561 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3562 }
3563
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3564 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3565 * We have the first data byte is in msg->sov. We're waiting for at
3566 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3567 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3568
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3569 if (msg->body_len < limit)
3570 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3571
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3572 if (req->i - (msg->sov - msg->som) >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3573 goto http_end;
3574
3575 missing_data:
3576 /* we get here if we need to wait for more data */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3577 if (req->flags & BF_FULL) {
3578 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3579 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3580 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3581
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3582 if ((req->flags & BF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
3583 txn->status = 408;
3584 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3585
3586 if (!(s->flags & SN_ERR_MASK))
3587 s->flags |= SN_ERR_CLITO;
3588 if (!(s->flags & SN_FINST_MASK))
3589 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3590 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3591 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3592
3593 /* we get here if we need to wait for more data */
3594 if (!(req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3595 /* Not enough data. We'll re-use the http-request
3596 * timeout here. Ideally, we should set the timeout
3597 * relative to the accept() date. We just set the
3598 * request timeout once at the beginning of the
3599 * request.
3600 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]3601 buffer_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3602 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3603 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3604 return 0;
3605 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3606
3607 http_end:
3608 /* The situation will not evolve, so let's give up on the analysis. */
3609 s->logs.tv_request = now; /* update the request timer to reflect full request */
3610 req->analysers &= ~an_bit;
3611 req->analyse_exp = TICK_ETERNITY;
3612 return 1;
3613
3614 return_bad_req: /* let's centralize all bad requests */
3615 txn->req.msg_state = HTTP_MSG_ERROR;
3616 txn->status = 400;
3617 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
3618
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3619 if (!(s->flags & SN_ERR_MASK))
3620 s->flags |= SN_ERR_PRXCOND;
3621 if (!(s->flags & SN_FINST_MASK))
3622 s->flags |= SN_FINST_R;
3623
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3624 return_err_msg:
3625 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3626 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3627 if (s->listener->counters)
3628 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3629 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3630}
3631
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3632/* send a server's name with an outgoing request over an established connection */
3633int 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]3634
3635 struct hdr_ctx ctx;
3636
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3637 char *hdr_name = be->server_id_hdr_name;
3638 int hdr_name_len = be->server_id_hdr_len;
3639
3640 char *hdr_val;
3641
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3642 ctx.idx = 0;
3643
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3644 while (http_find_header2(hdr_name, hdr_name_len, txn->req.buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3645 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3646 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3647 }
3648
3649 /* Add the new header requested with the server value */
3650 hdr_val = trash;
3651 memcpy(hdr_val, hdr_name, hdr_name_len);
3652 hdr_val += hdr_name_len;
3653 *hdr_val++ = ':';
3654 *hdr_val++ = ' ';
3655 hdr_val += strlcpy2(hdr_val, srv_name, trash + sizeof(trash) - hdr_val);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3656 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, hdr_val - trash);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3657
3658 return 0;
3659}
3660
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3661/* Terminate current transaction and prepare a new one. This is very tricky
3662 * right now but it works.
3663 */
3664void http_end_txn_clean_session(struct session *s)
3665{
3666 /* FIXME: We need a more portable way of releasing a backend's and a
3667 * server's connections. We need a safer way to reinitialize buffer
3668 * flags. We also need a more accurate method for computing per-request
3669 * data.
3670 */
3671 http_silent_debug(__LINE__, s);
3672
3673 s->req->cons->flags |= SI_FL_NOLINGER;
Willy Tarreau060781f2012-05-07 16:50:03 +0200[diff] [blame]3674 s->req->cons->sock.shutr(s->req->cons);
3675 s->req->cons->sock.shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3676
3677 http_silent_debug(__LINE__, s);
3678
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3679 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3680 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3681 if (unlikely(s->srv_conn))
3682 sess_change_server(s, NULL);
3683 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3684
3685 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
3686 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]3687 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3688
3689 if (s->txn.status) {
3690 int n;
3691
3692 n = s->txn.status / 100;
3693 if (n < 1 || n > 5)
3694 n = 0;
3695
3696 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3697 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3698
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]3699 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3700 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3701 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3702 }
3703
3704 /* don't count other requests' data */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3705 s->logs.bytes_in -= s->req->i;
3706 s->logs.bytes_out -= s->rep->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3707
3708 /* let's do a final log if we need it */
3709 if (s->logs.logwait &&
3710 !(s->flags & SN_MONITOR) &&
3711 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
3712 s->do_log(s);
3713 }
3714
3715 s->logs.accept_date = date; /* user-visible date for logging */
3716 s->logs.tv_accept = now; /* corrected date for internal use */
3717 tv_zero(&s->logs.tv_request);
3718 s->logs.t_queue = -1;
3719 s->logs.t_connect = -1;
3720 s->logs.t_data = -1;
3721 s->logs.t_close = 0;
3722 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
3723 s->logs.srv_queue_size = 0; /* we will get this number soon */
3724
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3725 s->logs.bytes_in = s->req->total = s->req->i;
3726 s->logs.bytes_out = s->rep->total = s->rep->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3727
3728 if (s->pend_pos)
3729 pendconn_free(s->pend_pos);
3730
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3731 if (target_srv(&s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3732 if (s->flags & SN_CURR_SESS) {
3733 s->flags &= ~SN_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3734 target_srv(&s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3735 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3736 if (may_dequeue_tasks(target_srv(&s->target), s->be))
3737 process_srv_queue(target_srv(&s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3738 }
3739
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]3740 clear_target(&s->target);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3741
3742 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
3743 s->req->cons->fd = -1; /* just to help with debugging */
3744 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]3745 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3746 s->req->cons->err_loc = NULL;
3747 s->req->cons->exp = TICK_ETERNITY;
3748 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3749 s->req->flags &= ~(BF_SHUTW|BF_SHUTW_NOW|BF_AUTO_CONNECT|BF_WRITE_ERROR|BF_STREAMER|BF_STREAMER_FAST|BF_NEVER_WAIT);
3750 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]3751 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]3752 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
3753 s->txn.meth = 0;
3754 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]3755 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]3756 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3757 s->req->cons->flags |= SI_FL_INDEP_STR;
3758
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3759 if (s->fe->options2 & PR_O2_NODELAY) {
3760 s->req->flags |= BF_NEVER_WAIT;
3761 s->rep->flags |= BF_NEVER_WAIT;
3762 }
3763
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3764 /* if the request buffer is not empty, it means we're
3765 * about to process another request, so send pending
3766 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3767 * Just don't do this if the buffer is close to be full,
3768 * because the request will wait for it to flush a little
3769 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3770 */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3771 if (s->req->i) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]3772 if (s->rep->o &&
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3773 !(s->rep->flags & BF_FULL) &&
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]3774 bi_end(s->rep) <= s->rep->data + s->rep->size - global.tune.maxrewrite)
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3775 s->rep->flags |= BF_EXPECT_MORE;
3776 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3777
3778 /* we're removing the analysers, we MUST re-enable events detection */
3779 buffer_auto_read(s->req);
3780 buffer_auto_close(s->req);
3781 buffer_auto_read(s->rep);
3782 buffer_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3783
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]3784 s->req->analysers = s->listener->analysers;
3785 s->req->analysers &= ~AN_REQ_DECODE_PROXY;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3786 s->rep->analysers = 0;
3787
3788 http_silent_debug(__LINE__, s);
3789}
3790
3791
3792/* This function updates the request state machine according to the response
3793 * state machine and buffer flags. It returns 1 if it changes anything (flag
3794 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3795 * it is only used to find when a request/response couple is complete. Both
3796 * this function and its equivalent should loop until both return zero. It
3797 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3798 */
3799int http_sync_req_state(struct session *s)
3800{
3801 struct buffer *buf = s->req;
3802 struct http_txn *txn = &s->txn;
3803 unsigned int old_flags = buf->flags;
3804 unsigned int old_state = txn->req.msg_state;
3805
3806 http_silent_debug(__LINE__, s);
3807 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
3808 return 0;
3809
3810 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3811 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3812 * We can shut the read side unless we want to abort_on_close,
3813 * or we have a POST request. The issue with POST requests is
3814 * that some browsers still send a CRLF after the request, and
3815 * this CRLF must be read so that it does not remain in the kernel
3816 * buffers, otherwise a close could cause an RST on some systems
3817 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3818 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3819 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3820 buffer_dont_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3821
3822 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
3823 goto wait_other_side;
3824
3825 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
3826 /* The server has not finished to respond, so we
3827 * don't want to move in order not to upset it.
3828 */
3829 goto wait_other_side;
3830 }
3831
3832 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
3833 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3834 buffer_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3835 txn->req.msg_state = HTTP_MSG_TUNNEL;
3836 goto wait_other_side;
3837 }
3838
3839 /* When we get here, it means that both the request and the
3840 * response have finished receiving. Depending on the connection
3841 * mode, we'll have to wait for the last bytes to leave in either
3842 * direction, and sometimes for a close to be effective.
3843 */
3844
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3845 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
3846 /* Server-close mode : queue a connection close to the server */
3847 if (!(buf->flags & (BF_SHUTW|BF_SHUTW_NOW)))
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3848 buffer_shutw_now(buf);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3849 }
3850 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
3851 /* Option forceclose is set, or either side wants to close,
3852 * let's enforce it now that we're not expecting any new
3853 * data to come. The caller knows the session is complete
3854 * once both states are CLOSED.
3855 */
3856 if (!(buf->flags & (BF_SHUTW|BF_SHUTW_NOW))) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3857 buffer_shutr_now(buf);
3858 buffer_shutw_now(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3859 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3860 }
3861 else {
3862 /* The last possible modes are keep-alive and tunnel. Since tunnel
3863 * mode does not set the body analyser, we can't reach this place
3864 * in tunnel mode, so we're left with keep-alive only.
3865 * This mode is currently not implemented, we switch to tunnel mode.
3866 */
3867 buffer_auto_read(buf);
3868 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3869 }
3870
3871 if (buf->flags & (BF_SHUTW|BF_SHUTW_NOW)) {
3872 /* if we've just closed an output, let's switch */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3873 buf->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
3874
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3875 if (!(buf->flags & BF_OUT_EMPTY)) {
3876 txn->req.msg_state = HTTP_MSG_CLOSING;
3877 goto http_msg_closing;
3878 }
3879 else {
3880 txn->req.msg_state = HTTP_MSG_CLOSED;
3881 goto http_msg_closed;
3882 }
3883 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3884 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3885 }
3886
3887 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
3888 http_msg_closing:
3889 /* nothing else to forward, just waiting for the output buffer
3890 * to be empty and for the shutw_now to take effect.
3891 */
3892 if (buf->flags & BF_OUT_EMPTY) {
3893 txn->req.msg_state = HTTP_MSG_CLOSED;
3894 goto http_msg_closed;
3895 }
3896 else if (buf->flags & BF_SHUTW) {
3897 txn->req.msg_state = HTTP_MSG_ERROR;
3898 goto wait_other_side;
3899 }
3900 }
3901
3902 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
3903 http_msg_closed:
3904 goto wait_other_side;
3905 }
3906
3907 wait_other_side:
3908 http_silent_debug(__LINE__, s);
3909 return txn->req.msg_state != old_state || buf->flags != old_flags;
3910}
3911
3912
3913/* This function updates the response state machine according to the request
3914 * state machine and buffer flags. It returns 1 if it changes anything (flag
3915 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3916 * it is only used to find when a request/response couple is complete. Both
3917 * this function and its equivalent should loop until both return zero. It
3918 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3919 */
3920int http_sync_res_state(struct session *s)
3921{
3922 struct buffer *buf = s->rep;
3923 struct http_txn *txn = &s->txn;
3924 unsigned int old_flags = buf->flags;
3925 unsigned int old_state = txn->rsp.msg_state;
3926
3927 http_silent_debug(__LINE__, s);
3928 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
3929 return 0;
3930
3931 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
3932 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3933 * still monitor the server connection for a possible close
3934 * while the request is being uploaded, so we don't disable
3935 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3936 */
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3937 /* buffer_dont_read(buf); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3938
3939 if (txn->req.msg_state == HTTP_MSG_ERROR)
3940 goto wait_other_side;
3941
3942 if (txn->req.msg_state < HTTP_MSG_DONE) {
3943 /* The client seems to still be sending data, probably
3944 * because we got an error response during an upload.
3945 * We have the choice of either breaking the connection
3946 * or letting it pass through. Let's do the later.
3947 */
3948 goto wait_other_side;
3949 }
3950
3951 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
3952 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3953 buffer_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3954 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
3955 goto wait_other_side;
3956 }
3957
3958 /* When we get here, it means that both the request and the
3959 * response have finished receiving. Depending on the connection
3960 * mode, we'll have to wait for the last bytes to leave in either
3961 * direction, and sometimes for a close to be effective.
3962 */
3963
3964 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
3965 /* Server-close mode : shut read and wait for the request
3966 * side to close its output buffer. The caller will detect
3967 * when we're in DONE and the other is in CLOSED and will
3968 * catch that for the final cleanup.
3969 */
3970 if (!(buf->flags & (BF_SHUTR|BF_SHUTR_NOW)))
3971 buffer_shutr_now(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3972 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3973 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
3974 /* Option forceclose is set, or either side wants to close,
3975 * let's enforce it now that we're not expecting any new
3976 * data to come. The caller knows the session is complete
3977 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3978 */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3979 if (!(buf->flags & (BF_SHUTW|BF_SHUTW_NOW))) {
3980 buffer_shutr_now(buf);
3981 buffer_shutw_now(buf);
3982 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3983 }
3984 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3985 /* The last possible modes are keep-alive and tunnel. Since tunnel
3986 * mode does not set the body analyser, we can't reach this place
3987 * in tunnel mode, so we're left with keep-alive only.
3988 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3989 */
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3990 buffer_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3991 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3992 }
3993
3994 if (buf->flags & (BF_SHUTW|BF_SHUTW_NOW)) {
3995 /* if we've just closed an output, let's switch */
3996 if (!(buf->flags & BF_OUT_EMPTY)) {
3997 txn->rsp.msg_state = HTTP_MSG_CLOSING;
3998 goto http_msg_closing;
3999 }
4000 else {
4001 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4002 goto http_msg_closed;
4003 }
4004 }
4005 goto wait_other_side;
4006 }
4007
4008 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4009 http_msg_closing:
4010 /* nothing else to forward, just waiting for the output buffer
4011 * to be empty and for the shutw_now to take effect.
4012 */
4013 if (buf->flags & BF_OUT_EMPTY) {
4014 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4015 goto http_msg_closed;
4016 }
4017 else if (buf->flags & BF_SHUTW) {
4018 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4019 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4020 if (target_srv(&s->target))
4021 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4022 goto wait_other_side;
4023 }
4024 }
4025
4026 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4027 http_msg_closed:
4028 /* drop any pending data */
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4029 bi_erase(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4030 buffer_auto_close(buf);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4031 buffer_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4032 goto wait_other_side;
4033 }
4034
4035 wait_other_side:
4036 http_silent_debug(__LINE__, s);
4037 return txn->rsp.msg_state != old_state || buf->flags != old_flags;
4038}
4039
4040
4041/* Resync the request and response state machines. Return 1 if either state
4042 * changes.
4043 */
4044int http_resync_states(struct session *s)
4045{
4046 struct http_txn *txn = &s->txn;
4047 int old_req_state = txn->req.msg_state;
4048 int old_res_state = txn->rsp.msg_state;
4049
4050 http_silent_debug(__LINE__, s);
4051 http_sync_req_state(s);
4052 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4053 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4054 if (!http_sync_res_state(s))
4055 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4056 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4057 if (!http_sync_req_state(s))
4058 break;
4059 }
4060 http_silent_debug(__LINE__, s);
4061 /* OK, both state machines agree on a compatible state.
4062 * There are a few cases we're interested in :
4063 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4064 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4065 * directions, so let's simply disable both analysers.
4066 * - HTTP_MSG_CLOSED on the response only means we must abort the
4067 * request.
4068 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4069 * with server-close mode means we've completed one request and we
4070 * must re-initialize the server connection.
4071 */
4072
4073 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4074 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4075 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4076 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4077 s->req->analysers = 0;
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4078 buffer_auto_close(s->req);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4079 buffer_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4080 s->rep->analysers = 0;
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4081 buffer_auto_close(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4082 buffer_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4083 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4084 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4085 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4086 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4087 (s->rep->flags & BF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4088 s->rep->analysers = 0;
4089 buffer_auto_close(s->rep);
4090 buffer_auto_read(s->rep);
4091 s->req->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4092 buffer_abort(s->req);
4093 buffer_auto_close(s->req);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4094 buffer_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4095 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4096 }
4097 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4098 txn->rsp.msg_state == HTTP_MSG_DONE &&
4099 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4100 /* server-close: terminate this server connection and
4101 * reinitialize a fresh-new transaction.
4102 */
4103 http_end_txn_clean_session(s);
4104 }
4105
4106 http_silent_debug(__LINE__, s);
4107 return txn->req.msg_state != old_req_state ||
4108 txn->rsp.msg_state != old_res_state;
4109}
4110
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4111/* This function is an analyser which forwards request body (including chunk
4112 * sizes if any). It is called as soon as we must forward, even if we forward
4113 * zero byte. The only situation where it must not be called is when we're in
4114 * tunnel mode and we want to forward till the close. It's used both to forward
4115 * remaining data and to resync after end of body. It expects the msg_state to
4116 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4117 * 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]4118 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4119 * bytes of pending data + the headers if not already done (between som and sov).
4120 * It eventually adjusts som to match sov after the data in between have been sent.
4121 */
4122int http_request_forward_body(struct session *s, struct buffer *req, int an_bit)
4123{
4124 struct http_txn *txn = &s->txn;
4125 struct http_msg *msg = &s->txn.req;
4126
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4127 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4128 return 0;
4129
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]4130 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]4131 ((req->flags & BF_SHUTW) && (req->to_forward || req->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4132 /* Output closed while we were sending data. We must abort and
4133 * wake the other side up.
4134 */
4135 msg->msg_state = HTTP_MSG_ERROR;
4136 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4137 return 1;
4138 }
4139
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4140 /* in most states, we should abort in case of early close */
4141 buffer_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4142
4143 /* Note that we don't have to send 100-continue back because we don't
4144 * need the data to complete our job, and it's up to the server to
4145 * decide whether to return 100, 417 or anything else in return of
4146 * an "Expect: 100-continue" header.
4147 */
4148
4149 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4150 /* we have msg->sov which points to the first byte of message body.
4151 * msg->som still points to the beginning of the message. We must
4152 * save the body in msg->next because it survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4153 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4154 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4155
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4156 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4157 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4158 else {
4159 msg->msg_state = HTTP_MSG_DATA;
4160 }
4161 }
4162
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4163 while (1) {
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4164 int bytes;
4165
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4166 http_silent_debug(__LINE__, s);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4167 /* we may have some data pending */
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4168 bytes = msg->sov - msg->som;
4169 if (msg->chunk_len || bytes) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4170 msg->som = msg->sov;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4171 if (likely(bytes < 0)) /* sov may have wrapped at the end */
4172 bytes += req->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4173 msg->next -= bytes; /* will be forwarded */
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4174 msg->chunk_len += (unsigned int)bytes;
4175 msg->chunk_len -= buffer_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4176 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4177
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4178 if (msg->msg_state == HTTP_MSG_DATA) {
4179 /* must still forward */
4180 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4181 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4182
4183 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4184 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4185 msg->msg_state = HTTP_MSG_DATA_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4186 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4187 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4188 }
4189 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4190 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4191 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4192 * TRAILERS state.
4193 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4194 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4195
4196 if (!ret)
4197 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4198 else if (ret < 0) {
4199 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4200 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4201 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]4202 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4203 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4204 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4205 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4206 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
4207 /* we want the CRLF after the data */
4208 int ret;
4209
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4210 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4211
4212 if (ret == 0)
4213 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4214 else if (ret < 0) {
4215 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4216 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4217 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]4218 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4219 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4220 /* we're in MSG_CHUNK_SIZE now */
4221 }
4222 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4223 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4224
4225 if (ret == 0)
4226 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4227 else if (ret < 0) {
4228 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4229 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4230 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]4231 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4232 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4233 /* we're in HTTP_MSG_DONE now */
4234 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4235 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4236 int old_state = msg->msg_state;
4237
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4238 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4239 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4240 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4241 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
4242 buffer_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4243 if (http_resync_states(s)) {
4244 /* some state changes occurred, maybe the analyser
4245 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4246 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4247 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4248 if (req->flags & BF_SHUTW) {
4249 /* request errors are most likely due to
4250 * the server aborting the transfer.
4251 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4252 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4253 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4254 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4255 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4256 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4257 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4258 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4259 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4260
4261 /* If "option abortonclose" is set on the backend, we
4262 * want to monitor the client's connection and forward
4263 * any shutdown notification to the server, which will
4264 * decide whether to close or to go on processing the
4265 * request.
4266 */
4267 if (s->be->options & PR_O_ABRT_CLOSE) {
4268 buffer_auto_read(req);
4269 buffer_auto_close(req);
4270 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4271 else if (s->txn.meth == HTTP_METH_POST) {
4272 /* POST requests may require to read extra CRLF
4273 * sent by broken browsers and which could cause
4274 * an RST to be sent upon close on some systems
4275 * (eg: Linux).
4276 */
4277 buffer_auto_read(req);
4278 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4279
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4280 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4281 }
4282 }
4283
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4284 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4285 /* stop waiting for data if the input is closed before the end */
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4286 if (req->flags & BF_SHUTR) {
4287 if (!(s->flags & SN_ERR_MASK))
4288 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4289 if (!(s->flags & SN_FINST_MASK)) {
4290 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4291 s->flags |= SN_FINST_H;
4292 else
4293 s->flags |= SN_FINST_D;
4294 }
4295
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4296 s->fe->fe_counters.cli_aborts++;
4297 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4298 if (target_srv(&s->target))
4299 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4300
4301 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4302 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4303
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4304 /* waiting for the last bits to leave the buffer */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4305 if (req->flags & BF_SHUTW)
4306 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4307
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4308 /* When TE: chunked is used, we need to get there again to parse remaining
4309 * chunks even if the client has closed, so we don't want to set BF_DONTCLOSE.
4310 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4311 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4312 buffer_dont_close(req);
4313
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4314 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]4315 * what we did. So we always set the BF_EXPECT_MORE flag so that the
4316 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4317 * modes are already handled by the stream sock layer. We must not do
4318 * this in content-length mode because it could present the MSG_MORE
4319 * flag with the last block of forwarded data, which would cause an
4320 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4321 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4322 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4323 req->flags |= BF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4324
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4325 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4326 return 0;
4327
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4328 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4329 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4330 if (s->listener->counters)
4331 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4332 return_bad_req_stats_ok:
4333 txn->req.msg_state = HTTP_MSG_ERROR;
4334 if (txn->status) {
4335 /* Note: we don't send any error if some data were already sent */
4336 stream_int_retnclose(req->prod, NULL);
4337 } else {
4338 txn->status = 400;
4339 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
4340 }
4341 req->analysers = 0;
4342 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]4343
4344 if (!(s->flags & SN_ERR_MASK))
4345 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4346 if (!(s->flags & SN_FINST_MASK)) {
4347 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4348 s->flags |= SN_FINST_H;
4349 else
4350 s->flags |= SN_FINST_D;
4351 }
4352 return 0;
4353
4354 aborted_xfer:
4355 txn->req.msg_state = HTTP_MSG_ERROR;
4356 if (txn->status) {
4357 /* Note: we don't send any error if some data were already sent */
4358 stream_int_retnclose(req->prod, NULL);
4359 } else {
4360 txn->status = 502;
4361 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_502));
4362 }
4363 req->analysers = 0;
4364 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4365
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4366 s->fe->fe_counters.srv_aborts++;
4367 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4368 if (target_srv(&s->target))
4369 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4370
4371 if (!(s->flags & SN_ERR_MASK))
4372 s->flags |= SN_ERR_SRVCL;
4373 if (!(s->flags & SN_FINST_MASK)) {
4374 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4375 s->flags |= SN_FINST_H;
4376 else
4377 s->flags |= SN_FINST_D;
4378 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4379 return 0;
4380}
4381
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4382/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4383 * processing can continue on next analysers, or zero if it either needs more
4384 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4385 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4386 * when it has nothing left to do, and may remove any analyser when it wants to
4387 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4388 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4389int http_wait_for_response(struct session *s, struct buffer *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4390{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4391 struct http_txn *txn = &s->txn;
4392 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4393 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4394 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4395 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4396 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4397
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4398 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]4399 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4400 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4401 rep,
4402 rep->rex, rep->wex,
4403 rep->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4404 rep->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4405 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4406
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4407 /*
4408 * Now parse the partial (or complete) lines.
4409 * We will check the response syntax, and also join multi-line
4410 * headers. An index of all the lines will be elaborated while
4411 * parsing.
4412 *
4413 * For the parsing, we use a 28 states FSM.
4414 *
4415 * Here is the information we currently have :
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4416 * rep->data + msg->som = beginning of response
4417 * rep->data + msg->eoh = end of processed headers / start of current one
4418 * msg->eol = end of current header or line (LF or CRLF)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4419 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4420 * rep->r = end of data
Willy Tarreau962c3f42010-01-10 00:15:35 +0100[diff] [blame]4421 * Once we reach MSG_BODY, rep->sol = rep->data + msg->som
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4422 */
4423
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4424 /* There's a protected area at the end of the buffer for rewriting
4425 * purposes. We don't want to start to parse the request if the
4426 * protected area is affected, because we may have to move processed
4427 * data later, which is much more complicated.
4428 */
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4429 if (buffer_not_empty(rep) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4430 if (unlikely((rep->flags & BF_FULL) ||
Willy Tarreaucc5cfcb2012-05-04 21:35:27 +0200[diff] [blame]4431 bi_end(rep) < b_ptr(rep, msg->next) ||
4432 bi_end(rep) > rep->data + rep->size - global.tune.maxrewrite)) {
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]4433 if (rep->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4434 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4435 if (rep->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
4436 goto abort_response;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4437 buffer_dont_close(rep);
4438 rep->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
4439 return 0;
4440 }
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4441 if (rep->i <= rep->size - global.tune.maxrewrite)
Willy Tarreaua7fe8e52012-05-08 20:40:09 +0200[diff] [blame]4442 buffer_slow_realign(msg->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4443 }
4444
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4445 if (likely(msg->next < rep->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4446 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4447 }
4448
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4449 /* 1: we might have to print this header in debug mode */
4450 if (unlikely((global.mode & MODE_DEBUG) &&
4451 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreauc3bfeeb2010-04-16 09:14:45 +0200[diff] [blame]4452 msg->sol &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4453 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4454 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4455
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4456 sol = rep->p + msg->som;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]4457 eol = sol + msg->sl.st.l;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4458 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4459
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4460 sol += hdr_idx_first_pos(&txn->hdr_idx);
4461 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4462
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4463 while (cur_idx) {
4464 eol = sol + txn->hdr_idx.v[cur_idx].len;
4465 debug_hdr("srvhdr", s, sol, eol);
4466 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4467 cur_idx = txn->hdr_idx.v[cur_idx].next;
4468 }
4469 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4470
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4471 /*
4472 * Now we quickly check if we have found a full valid response.
4473 * If not so, we check the FD and buffer states before leaving.
4474 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4475 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4476 * responses are checked first.
4477 *
4478 * Depending on whether the client is still there or not, we
4479 * may send an error response back or not. Note that normally
4480 * we should only check for HTTP status there, and check I/O
4481 * errors somewhere else.
4482 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4483
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4484 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4485 /* Invalid response */
4486 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4487 /* we detected a parsing error. We want to archive this response
4488 * in the dedicated proxy area for later troubleshooting.
4489 */
4490 hdr_response_bad:
4491 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4492 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]4493
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4494 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4495 if (target_srv(&s->target)) {
4496 target_srv(&s->target)->counters.failed_resp++;
4497 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4498 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4499 abort_response:
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4500 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4501 rep->analysers = 0;
4502 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4503 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4504 bi_erase(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4505 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
4506
4507 if (!(s->flags & SN_ERR_MASK))
4508 s->flags |= SN_ERR_PRXCOND;
4509 if (!(s->flags & SN_FINST_MASK))
4510 s->flags |= SN_FINST_H;
4511
4512 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4513 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4514
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4515 /* too large response does not fit in buffer. */
4516 else if (rep->flags & BF_FULL) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4517 if (msg->err_pos < 0)
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4518 msg->err_pos = rep->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4519 goto hdr_response_bad;
4520 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4521
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4522 /* read error */
4523 else if (rep->flags & BF_READ_ERROR) {
4524 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4525 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]4526
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4527 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4528 if (target_srv(&s->target)) {
4529 target_srv(&s->target)->counters.failed_resp++;
4530 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4531 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4532
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4533 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4534 rep->analysers = 0;
4535 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4536 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4537 bi_erase(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4538 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4539
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4540 if (!(s->flags & SN_ERR_MASK))
4541 s->flags |= SN_ERR_SRVCL;
4542 if (!(s->flags & SN_FINST_MASK))
4543 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4544 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4545 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4546
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4547 /* read timeout : return a 504 to the client. */
4548 else if (rep->flags & BF_READ_TIMEOUT) {
4549 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4550 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]4551
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4552 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4553 if (target_srv(&s->target)) {
4554 target_srv(&s->target)->counters.failed_resp++;
4555 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4556 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4557
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4558 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4559 rep->analysers = 0;
4560 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4561 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4562 bi_erase(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4563 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4564
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4565 if (!(s->flags & SN_ERR_MASK))
4566 s->flags |= SN_ERR_SRVTO;
4567 if (!(s->flags & SN_FINST_MASK))
4568 s->flags |= SN_FINST_H;
4569 return 0;
4570 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4571
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4572 /* close from server, capture the response if the server has started to respond */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4573 else if (rep->flags & BF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4574 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4575 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]4576
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4577 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4578 if (target_srv(&s->target)) {
4579 target_srv(&s->target)->counters.failed_resp++;
4580 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4581 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4582
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4583 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4584 rep->analysers = 0;
4585 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4586 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4587 bi_erase(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4588 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4589
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4590 if (!(s->flags & SN_ERR_MASK))
4591 s->flags |= SN_ERR_SRVCL;
4592 if (!(s->flags & SN_FINST_MASK))
4593 s->flags |= SN_FINST_H;
4594 return 0;
4595 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4596
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4597 /* write error to client (we don't send any message then) */
4598 else if (rep->flags & BF_WRITE_ERROR) {
4599 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4600 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]4601
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4602 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4603 rep->analysers = 0;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4604 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4605
4606 if (!(s->flags & SN_ERR_MASK))
4607 s->flags |= SN_ERR_CLICL;
4608 if (!(s->flags & SN_FINST_MASK))
4609 s->flags |= SN_FINST_H;
4610
4611 /* process_session() will take care of the error */
4612 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4613 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4614
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4615 buffer_dont_close(rep);
4616 return 0;
4617 }
4618
4619 /* More interesting part now : we know that we have a complete
4620 * response which at least looks like HTTP. We have an indicator
4621 * of each header's length, so we can parse them quickly.
4622 */
4623
4624 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4625 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]4626
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4627 /*
4628 * 1: get the status code
4629 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]4630 n = rep->p[msg->sol + msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4631 if (n < 1 || n > 5)
4632 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4633 /* when the client triggers a 4xx from the server, it's most often due
4634 * to a missing object or permission. These events should be tracked
4635 * because if they happen often, it may indicate a brute force or a
4636 * vulnerability scan.
4637 */
4638 if (n == 4)
4639 session_inc_http_err_ctr(s);
4640
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4641 if (target_srv(&s->target))
4642 target_srv(&s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4643
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4644 /* check if the response is HTTP/1.1 or above */
4645 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]4646 ((rep->p[msg->sol + 5] > '1') ||
4647 ((rep->p[msg->sol + 5] == '1') &&
4648 (rep->p[msg->sol + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4649 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4650
4651 /* "connection" has not been parsed yet */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4652 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]4653
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4654 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4655 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4656
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]4657 txn->status = strl2ui(rep->p + msg->sol + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4658
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]4659 /* Adjust server's health based on status code. Note: status codes 501
4660 * and 505 are triggered on demand by client request, so we must not
4661 * count them as server failures.
4662 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4663 if (target_srv(&s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4664 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4665 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4666 else
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4667 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4668 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4669
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4670 /*
4671 * 2: check for cacheability.
4672 */
4673
4674 switch (txn->status) {
4675 case 200:
4676 case 203:
4677 case 206:
4678 case 300:
4679 case 301:
4680 case 410:
4681 /* RFC2616 @13.4:
4682 * "A response received with a status code of
4683 * 200, 203, 206, 300, 301 or 410 MAY be stored
4684 * by a cache (...) unless a cache-control
4685 * directive prohibits caching."
4686 *
4687 * RFC2616 @9.5: POST method :
4688 * "Responses to this method are not cacheable,
4689 * unless the response includes appropriate
4690 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4691 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4692 if (likely(txn->meth != HTTP_METH_POST) &&
4693 (s->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
4694 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
4695 break;
4696 default:
4697 break;
4698 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4699
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4700 /*
4701 * 3: we may need to capture headers
4702 */
4703 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]4704 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]4705 capture_headers(rep->p + msg->sol, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4706 txn->rsp.cap, s->fe->rsp_cap);
4707
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4708 /* 4: determine the transfer-length.
4709 * According to RFC2616 #4.4, amended by the HTTPbis working group,
4710 * the presence of a message-body in a RESPONSE and its transfer length
4711 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4712 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4713 * All responses to the HEAD request method MUST NOT include a
4714 * message-body, even though the presence of entity-header fields
4715 * might lead one to believe they do. All 1xx (informational), 204
4716 * (No Content), and 304 (Not Modified) responses MUST NOT include a
4717 * message-body. All other responses do include a message-body,
4718 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4719 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4720 * 1. Any response which "MUST NOT" include a message-body (such as the
4721 * 1xx, 204 and 304 responses and any response to a HEAD request) is
4722 * always terminated by the first empty line after the header fields,
4723 * regardless of the entity-header fields present in the message.
4724 *
4725 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
4726 * the "chunked" transfer-coding (Section 6.2) is used, the
4727 * transfer-length is defined by the use of this transfer-coding.
4728 * If a Transfer-Encoding header field is present and the "chunked"
4729 * transfer-coding is not present, the transfer-length is defined by
4730 * the sender closing the connection.
4731 *
4732 * 3. If a Content-Length header field is present, its decimal value in
4733 * OCTETs represents both the entity-length and the transfer-length.
4734 * If a message is received with both a Transfer-Encoding header
4735 * field and a Content-Length header field, the latter MUST be ignored.
4736 *
4737 * 4. If the message uses the media type "multipart/byteranges", and
4738 * the transfer-length is not otherwise specified, then this self-
4739 * delimiting media type defines the transfer-length. This media
4740 * type MUST NOT be used unless the sender knows that the recipient
4741 * can parse it; the presence in a request of a Range header with
4742 * multiple byte-range specifiers from a 1.1 client implies that the
4743 * client can parse multipart/byteranges responses.
4744 *
4745 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4746 */
4747
4748 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4749 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4750 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4751 * FIXME: should we parse anyway and return an error on chunked encoding ?
4752 */
4753 if (txn->meth == HTTP_METH_HEAD ||
4754 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4755 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4756 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4757 goto skip_content_length;
4758 }
4759
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4760 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4761 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4762 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]4763 http_find_header2("Transfer-Encoding", 17, rep->p + msg->sol, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4764 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4765 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
4766 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4767 /* bad transfer-encoding (chunked followed by something else) */
4768 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4769 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4770 break;
4771 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4772 }
4773
4774 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
4775 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4776 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]4777 http_find_header2("Content-Length", 14, rep->p + msg->sol, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4778 signed long long cl;
4779
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4780 if (!ctx.vlen) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]4781 msg->err_pos = ctx.line + ctx.val - rep->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4782 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4783 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4784
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4785 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]4786 msg->err_pos = ctx.line + ctx.val - rep->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4787 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4788 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4789
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4790 if (cl < 0) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]4791 msg->err_pos = ctx.line + ctx.val - rep->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4792 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4793 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4794
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4795 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]4796 msg->err_pos = ctx.line + ctx.val - rep->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4797 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4798 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4799
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4800 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4801 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4802 }
4803
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4804 /* FIXME: we should also implement the multipart/byterange method.
4805 * For now on, we resort to close mode in this case (unknown length).
4806 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4807skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4808
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4809 /* end of job, return OK */
4810 rep->analysers &= ~an_bit;
4811 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4812 buffer_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4813 return 1;
4814}
4815
4816/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]4817 * It normally returns 1 unless it wants to break. It relies on buffers flags,
4818 * and updates t->rep->analysers. It might make sense to explode it into several
4819 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4820 */
4821int http_process_res_common(struct session *t, struct buffer *rep, int an_bit, struct proxy *px)
4822{
4823 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4824 struct http_msg *msg = &txn->rsp;
4825 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4826 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4827
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4828 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]4829 now_ms, __FUNCTION__,
4830 t,
4831 rep,
4832 rep->rex, rep->wex,
4833 rep->flags,
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4834 rep->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4835 rep->analysers);
4836
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4837 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4838 return 0;
4839
4840 rep->analysers &= ~an_bit;
4841 rep->analyse_exp = TICK_ETERNITY;
4842
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4843 /* Now we have to check if we need to modify the Connection header.
4844 * This is more difficult on the response than it is on the request,
4845 * because we can have two different HTTP versions and we don't know
4846 * how the client will interprete a response. For instance, let's say
4847 * that the client sends a keep-alive request in HTTP/1.0 and gets an
4848 * HTTP/1.1 response without any header. Maybe it will bound itself to
4849 * HTTP/1.0 because it only knows about it, and will consider the lack
4850 * of header as a close, or maybe it knows HTTP/1.1 and can consider
4851 * the lack of header as a keep-alive. Thus we will use two flags
4852 * indicating how a request MAY be understood by the client. In case
4853 * of multiple possibilities, we'll fix the header to be explicit. If
4854 * ambiguous cases such as both close and keepalive are seen, then we
4855 * will fall back to explicit close. Note that we won't take risks with
4856 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4857 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4858 */
4859
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]4860 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
4861 txn->status == 101)) {
4862 /* Either we've established an explicit tunnel, or we're
4863 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]4864 * to understand the next protocols. We have to switch to tunnel
4865 * mode, so that we transfer the request and responses then let
4866 * this protocol pass unmodified. When we later implement specific
4867 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]4868 * header which contains information about that protocol for
4869 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]4870 */
4871 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
4872 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]4873 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
4874 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
4875 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4876 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4877
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4878 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4879 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4880 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
4881 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4882
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4883 /* now adjust header transformations depending on current state */
4884 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
4885 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4886 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4887 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4888 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4889 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4890 else { /* SCL / KAL */
4891 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4892 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4893 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4894 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4895
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4896 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4897 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4898
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4899 /* Some keep-alive responses are converted to Server-close if
4900 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4901 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4902 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
4903 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4904 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4905 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4906 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4907 }
4908
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4909 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4910 /*
4911 * 3: we will have to evaluate the filters.
4912 * As opposed to version 1.2, now they will be evaluated in the
4913 * filters order and not in the header order. This means that
4914 * each filter has to be validated among all headers.
4915 *
4916 * Filters are tried with ->be first, then with ->fe if it is
4917 * different from ->be.
4918 */
4919
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4920 cur_proxy = t->be;
4921 while (1) {
4922 struct proxy *rule_set = cur_proxy;
4923
4924 /* try headers filters */
4925 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]4926 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4927 return_bad_resp:
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4928 if (target_srv(&t->target)) {
4929 target_srv(&t->target)->counters.failed_resp++;
4930 health_adjust(target_srv(&t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4931 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4932 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4933 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4934 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4935 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4936 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4937 bi_erase(rep);
Willy Tarreau8e89b842009-10-18 23:56:35 +0200[diff] [blame]4938 stream_int_retnclose(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4939 if (!(t->flags & SN_ERR_MASK))
4940 t->flags |= SN_ERR_PRXCOND;
4941 if (!(t->flags & SN_FINST_MASK))
4942 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4943 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4944 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4945 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4946
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4947 /* has the response been denied ? */
4948 if (txn->flags & TX_SVDENY) {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4949 if (target_srv(&t->target))
4950 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4951
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4952 t->be->be_counters.denied_resp++;
4953 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4954 if (t->listener->counters)
4955 t->listener->counters->denied_resp++;
4956
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4957 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]4958 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4959
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4960 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]4961 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4962 if (txn->status < 200)
4963 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]4964 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4965 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]4966 ret = acl_pass(ret);
4967 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4968 ret = !ret;
4969 if (!ret)
4970 continue;
4971 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4972 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4973 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]4974 }
4975
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4976 /* check whether we're already working on the frontend */
4977 if (cur_proxy == t->fe)
4978 break;
4979 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4980 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4981
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4982 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]4983 * We may be facing a 100-continue response, in which case this
4984 * is not the right response, and we're waiting for the next one.
4985 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]4986 * next one.
4987 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]4988 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]4989 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]4990 msg->next -= buffer_forward(rep, msg->next - msg->sol);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]4991 msg->msg_state = HTTP_MSG_RPBEFORE;
4992 txn->status = 0;
4993 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
4994 return 1;
4995 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]4996 else if (unlikely(txn->status < 200))
4997 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]4998
4999 /* we don't have any 1xx status code now */
5000
5001 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5002 * 4: check for server cookie.
5003 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5004 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5005 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5006 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5007
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5008
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5009 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5010 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5011 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5012 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5013 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5014
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5015 /*
5016 * 6: add server cookie in the response if needed
5017 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5018 if (target_srv(&t->target) && (t->be->options & PR_O_COOK_INS) &&
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]5019 !((txn->flags & TX_SCK_FOUND) && (t->be->options2 & PR_O2_COOK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5020 (!(t->flags & SN_DIRECT) ||
5021 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5022 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5023 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5024 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5025 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST)) &&
5026 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5027 int len;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5028 /* the server is known, it's not the one the client requested, or the
5029 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5030 * insert a set-cookie here, except if we want to insert only on POST
5031 * requests and this one isn't. Note that servers which don't have cookies
5032 * (eg: some backup servers) will return a full cookie removal request.
5033 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5034 if (!target_srv(&t->target)->cookie) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5035 len = sprintf(trash,
5036 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5037 t->be->cookie_name);
5038 }
5039 else {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5040 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]5041
5042 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5043 /* emit last_date, which is mandatory */
5044 trash[len++] = COOKIE_DELIM_DATE;
5045 s30tob64((date.tv_sec+3) >> 2, trash + len); len += 5;
5046 if (t->be->cookie_maxlife) {
5047 /* emit first_date, which is either the original one or
5048 * the current date.
5049 */
5050 trash[len++] = COOKIE_DELIM_DATE;
5051 s30tob64(txn->cookie_first_date ?
5052 txn->cookie_first_date >> 2 :
5053 (date.tv_sec+3) >> 2, trash + len);
5054 len += 5;
5055 }
5056 }
5057 len += sprintf(trash + len, "; path=/");
5058 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5059
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5060 if (t->be->cookie_domain)
5061 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5062
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5063 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash, len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5064 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5065
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5066 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5067 if (target_srv(&t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5068 /* the server did not change, only the date was updated */
5069 txn->flags |= TX_SCK_UPDATED;
5070 else
5071 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5072
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5073 /* Here, we will tell an eventual cache on the client side that we don't
5074 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5075 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5076 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5077 */
5078 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5079
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5080 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5081
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5082 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5083 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5084 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5085 }
5086 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5087
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5088 /*
5089 * 7: check if result will be cacheable with a cookie.
5090 * We'll block the response if security checks have caught
5091 * nasty things such as a cacheable cookie.
5092 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5093 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5094 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5095 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5096
5097 /* we're in presence of a cacheable response containing
5098 * a set-cookie header. We'll block it as requested by
5099 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5100 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5101 if (target_srv(&t->target))
5102 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5103
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5104 t->be->be_counters.denied_resp++;
5105 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5106 if (t->listener->counters)
5107 t->listener->counters->denied_resp++;
5108
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5109 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5110 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5111 send_log(t->be, LOG_ALERT,
5112 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5113 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5114 goto return_srv_prx_502;
5115 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5116
5117 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5118 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5119 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5120 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5121 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE)) {
5122 unsigned int want_flags = 0;
5123
5124 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5125 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5126 /* we want a keep-alive response here. Keep-alive header
5127 * required if either side is not 1.1.
5128 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5129 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5130 want_flags |= TX_CON_KAL_SET;
5131 }
5132 else {
5133 /* we want a close response here. Close header required if
5134 * the server is 1.1, regardless of the client.
5135 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5136 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5137 want_flags |= TX_CON_CLO_SET;
5138 }
5139
5140 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5141 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5142 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5143
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5144 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5145 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5146 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5147 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5148
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5149 /*************************************************************
5150 * OK, that's finished for the headers. We have done what we *
5151 * could. Let's switch to the DATA state. *
5152 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5153
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5154 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5155
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5156 /* if the user wants to log as soon as possible, without counting
5157 * bytes from the server, then this is the right moment. We have
5158 * to temporarily assign bytes_out to log what we currently have.
5159 */
5160 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5161 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5162 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5163 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5164 t->logs.bytes_out = 0;
5165 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5166
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5167 /* Note: we must not try to cheat by jumping directly to DATA,
5168 * otherwise we would not let the client side wake up.
5169 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5170
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5171 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5172 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5173 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5174}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5175
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5176/* This function is an analyser which forwards response body (including chunk
5177 * sizes if any). It is called as soon as we must forward, even if we forward
5178 * zero byte. The only situation where it must not be called is when we're in
5179 * tunnel mode and we want to forward till the close. It's used both to forward
5180 * remaining data and to resync after end of body. It expects the msg_state to
5181 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5182 * 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]5183 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5184 * bytes of pending data + the headers if not already done (between som and sov).
5185 * It eventually adjusts som to match sov after the data in between have been sent.
5186 */
5187int http_response_forward_body(struct session *s, struct buffer *res, int an_bit)
5188{
5189 struct http_txn *txn = &s->txn;
5190 struct http_msg *msg = &s->txn.rsp;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5191 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5192
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5193 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5194 return 0;
5195
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5196 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]5197 ((res->flags & BF_SHUTW) && (res->to_forward || res->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5198 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5199 /* Output closed while we were sending data. We must abort and
5200 * wake the other side up.
5201 */
5202 msg->msg_state = HTTP_MSG_ERROR;
5203 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5204 return 1;
5205 }
5206
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5207 /* in most states, we should abort in case of early close */
5208 buffer_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5209
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5210 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5211 /* we have msg->sov which points to the first byte of message body.
5212 * msg->som still points to the beginning of the message. We must
5213 * save the body in msg->next because it survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5214 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]5215 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5216
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5217 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5218 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5219 else {
5220 msg->msg_state = HTTP_MSG_DATA;
5221 }
5222 }
5223
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5224 while (1) {
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5225 int bytes;
5226
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5227 http_silent_debug(__LINE__, s);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5228 /* we may have some data pending */
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5229 bytes = msg->sov - msg->som;
5230 if (msg->chunk_len || bytes) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5231 msg->som = msg->sov;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5232 if (likely(bytes < 0)) /* sov may have wrapped at the end */
5233 bytes += res->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5234 msg->next -= bytes; /* will be forwarded */
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5235 msg->chunk_len += (unsigned int)bytes;
5236 msg->chunk_len -= buffer_forward(res, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5237 }
5238
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5239 if (msg->msg_state == HTTP_MSG_DATA) {
5240 /* must still forward */
5241 if (res->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5242 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5243
5244 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5245 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5246 msg->msg_state = HTTP_MSG_DATA_CRLF;
5247 else
5248 msg->msg_state = HTTP_MSG_DONE;
5249 }
5250 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5251 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5252 * set ->sov and ->next to point to the body and switch to DATA or
5253 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5254 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5255 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5256
5257 if (!ret)
5258 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5259 else if (ret < 0) {
5260 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5261 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]5262 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5263 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5264 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5265 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5266 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
5267 /* we want the CRLF after the data */
5268 int ret;
5269
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5270 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5271
5272 if (!ret)
5273 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5274 else if (ret < 0) {
5275 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5276 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]5277 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5278 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5279 /* we're in MSG_CHUNK_SIZE now */
5280 }
5281 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5282 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5283
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5284 if (ret == 0)
5285 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5286 else if (ret < 0) {
5287 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5288 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]5289 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5290 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5291 /* we're in HTTP_MSG_DONE now */
5292 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5293 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5294 int old_state = msg->msg_state;
5295
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5296 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5297 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5298 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5299 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
5300 buffer_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5301 if (http_resync_states(s)) {
5302 http_silent_debug(__LINE__, s);
5303 /* some state changes occurred, maybe the analyser
5304 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5305 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5306 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5307 if (res->flags & BF_SHUTW) {
5308 /* response errors are most likely due to
5309 * the client aborting the transfer.
5310 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5311 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5312 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5313 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5314 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5315 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5316 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5317 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5318 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5319 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5320 }
5321 }
5322
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5323 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5324 /* stop waiting for data if the input is closed before the end */
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5325 if (res->flags & BF_SHUTR) {
5326 if (!(s->flags & SN_ERR_MASK))
5327 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5328 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5329 if (target_srv(&s->target))
5330 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5331 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5332 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5333
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5334 if (res->flags & BF_SHUTW)
5335 goto aborted_xfer;
5336
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5337 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5338 if (!s->req->analysers)
5339 goto return_bad_res;
5340
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5341 /* forward any pending data */
5342 bytes = msg->sov - msg->som;
5343 if (msg->chunk_len || bytes) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5344 msg->som = msg->sov;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5345 if (likely(bytes < 0)) /* sov may have wrapped at the end */
5346 bytes += res->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5347 msg->next -= bytes; /* will be forwarded */
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5348 msg->chunk_len += (unsigned int)bytes;
5349 msg->chunk_len -= buffer_forward(res, msg->chunk_len);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5350 }
5351
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5352 /* When TE: chunked is used, we need to get there again to parse remaining
5353 * chunks even if the server has closed, so we don't want to set BF_DONTCLOSE.
5354 * Similarly, with keep-alive on the client side, we don't want to forward a
5355 * close.
5356 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5357 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5358 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5359 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
5360 buffer_dont_close(res);
5361
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5362 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]5363 * what we did. So we always set the BF_EXPECT_MORE flag so that the
5364 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5365 * modes are already handled by the stream sock layer. We must not do
5366 * this in content-length mode because it could present the MSG_MORE
5367 * flag with the last block of forwarded data, which would cause an
5368 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5369 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5370 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5371 res->flags |= BF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5372
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5373 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5374 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5375 return 0;
5376
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5377 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5378 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5379 if (target_srv(&s->target))
5380 target_srv(&s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5381
5382 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5383 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5384 /* don't send any error message as we're in the body */
5385 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5386 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5387 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]5388 if (target_srv(&s->target))
5389 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5390
5391 if (!(s->flags & SN_ERR_MASK))
5392 s->flags |= SN_ERR_PRXCOND;
5393 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5394 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5395 return 0;
5396
5397 aborted_xfer:
5398 txn->rsp.msg_state = HTTP_MSG_ERROR;
5399 /* don't send any error message as we're in the body */
5400 stream_int_retnclose(res->cons, NULL);
5401 res->analysers = 0;
5402 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5403
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5404 s->fe->fe_counters.cli_aborts++;
5405 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5406 if (target_srv(&s->target))
5407 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5408
5409 if (!(s->flags & SN_ERR_MASK))
5410 s->flags |= SN_ERR_CLICL;
5411 if (!(s->flags & SN_FINST_MASK))
5412 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5413 return 0;
5414}
5415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5416/* Iterate the same filter through all request headers.
5417 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5418 * Since it can manage the switch to another backend, it updates the per-proxy
5419 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5420 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5421int 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]5422{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5423 char term;
5424 char *cur_ptr, *cur_end, *cur_next;
5425 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5426 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5427 struct hdr_idx_elem *cur_hdr;
5428 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5430 last_hdr = 0;
5431
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]5432 cur_next = req->p + txn->req.sol + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5433 old_idx = 0;
5434
5435 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5436 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5437 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5438 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5439 (exp->action == ACT_ALLOW ||
5440 exp->action == ACT_DENY ||
5441 exp->action == ACT_TARPIT))
5442 return 0;
5443
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5444 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5445 if (!cur_idx)
5446 break;
5447
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5448 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5449 cur_ptr = cur_next;
5450 cur_end = cur_ptr + cur_hdr->len;
5451 cur_next = cur_end + cur_hdr->cr + 1;
5452
5453 /* Now we have one header between cur_ptr and cur_end,
5454 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5455 */
5456
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5457 /* The annoying part is that pattern matching needs
5458 * that we modify the contents to null-terminate all
5459 * strings before testing them.
5460 */
5461
5462 term = *cur_end;
5463 *cur_end = '\0';
5464
5465 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5466 switch (exp->action) {
5467 case ACT_SETBE:
5468 /* It is not possible to jump a second time.
5469 * FIXME: should we return an HTTP/500 here so that
5470 * the admin knows there's a problem ?
5471 */
5472 if (t->be != t->fe)
5473 break;
5474
5475 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5476 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5477 last_hdr = 1;
5478 break;
5479
5480 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5481 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5482 last_hdr = 1;
5483 break;
5484
5485 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5486 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5487 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5488
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5489 t->fe->fe_counters.denied_req++;
5490 if (t->fe != t->be)
5491 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5492 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5493 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5494
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5495 break;
5496
5497 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5498 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5499 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5500
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5501 t->fe->fe_counters.denied_req++;
5502 if (t->fe != t->be)
5503 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5504 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5505 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5506
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5507 break;
5508
5509 case ACT_REPLACE:
5510 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
5511 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
5512 /* FIXME: if the user adds a newline in the replacement, the
5513 * index will not be recalculated for now, and the new line
5514 * will not be counted as a new header.
5515 */
5516
5517 cur_end += delta;
5518 cur_next += delta;
5519 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5520 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5521 break;
5522
5523 case ACT_REMOVE:
5524 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
5525 cur_next += delta;
5526
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5527 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5528 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5529 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5530 cur_hdr->len = 0;
5531 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5532 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5533 break;
5534
5535 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5536 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5537 if (cur_end)
5538 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5539
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5540 /* keep the link from this header to next one in case of later
5541 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5542 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5543 old_idx = cur_idx;
5544 }
5545 return 0;
5546}
5547
5548
5549/* Apply the filter to the request line.
5550 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5551 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5552 * Since it can manage the switch to another backend, it updates the per-proxy
5553 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5554 */
5555int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
5556{
5557 char term;
5558 char *cur_ptr, *cur_end;
5559 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5560 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5561 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5562
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5563
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5564 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5565 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5566 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5567 (exp->action == ACT_ALLOW ||
5568 exp->action == ACT_DENY ||
5569 exp->action == ACT_TARPIT))
5570 return 0;
5571 else if (exp->action == ACT_REMOVE)
5572 return 0;
5573
5574 done = 0;
5575
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]5576 cur_ptr = req->p + txn->req.sol;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5577 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5578
5579 /* Now we have the request line between cur_ptr and cur_end */
5580
5581 /* The annoying part is that pattern matching needs
5582 * that we modify the contents to null-terminate all
5583 * strings before testing them.
5584 */
5585
5586 term = *cur_end;
5587 *cur_end = '\0';
5588
5589 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5590 switch (exp->action) {
5591 case ACT_SETBE:
5592 /* It is not possible to jump a second time.
5593 * FIXME: should we return an HTTP/500 here so that
5594 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5595 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5596 if (t->be != t->fe)
5597 break;
5598
5599 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5600 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5601 done = 1;
5602 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5603
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5604 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5605 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5606 done = 1;
5607 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5608
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5609 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5610 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5611
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5612 t->fe->fe_counters.denied_req++;
5613 if (t->fe != t->be)
5614 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5615 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5616 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5617
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5618 done = 1;
5619 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5620
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5621 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5622 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5623
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5624 t->fe->fe_counters.denied_req++;
5625 if (t->fe != t->be)
5626 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5627 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5628 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5629
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5630 done = 1;
5631 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5632
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5633 case ACT_REPLACE:
5634 *cur_end = term; /* restore the string terminator */
5635 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
5636 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
5637 /* FIXME: if the user adds a newline in the replacement, the
5638 * index will not be recalculated for now, and the new line
5639 * will not be counted as a new header.
5640 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5641
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5642 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5643 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]5644 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5645 HTTP_MSG_RQMETH,
5646 cur_ptr, cur_end + 1,
5647 NULL, NULL);
5648 if (unlikely(!cur_end))
5649 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5650
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5651 /* we have a full request and we know that we have either a CR
5652 * or an LF at <ptr>.
5653 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5654 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
5655 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]5656 /* there is no point trying this regex on headers */
5657 return 1;
5658 }
5659 }
5660 *cur_end = term; /* restore the string terminator */
5661 return done;
5662}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]5663
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5664
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5665
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5666/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5667 * 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]5668 * 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]5669 * unparsable request. Since it can manage the switch to another backend, it
5670 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5671 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5672int apply_filters_to_request(struct session *s, struct buffer *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5673{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5674 struct http_txn *txn = &s->txn;
5675 struct hdr_exp *exp;
5676
5677 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5678 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5679
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5680 /*
5681 * The interleaving of transformations and verdicts
5682 * makes it difficult to decide to continue or stop
5683 * the evaluation.
5684 */
5685
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5686 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
5687 break;
5688
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5689 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5690 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5691 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5692 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5693
5694 /* if this filter had a condition, evaluate it now and skip to
5695 * next filter if the condition does not match.
5696 */
5697 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5698 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]5699 ret = acl_pass(ret);
5700 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
5701 ret = !ret;
5702
5703 if (!ret)
5704 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5705 }
5706
5707 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5708 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5709 if (unlikely(ret < 0))
5710 return -1;
5711
5712 if (likely(ret == 0)) {
5713 /* The filter did not match the request, it can be
5714 * iterated through all headers.
5715 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5716 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5717 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5718 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5719 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5720}
5721
5722
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5723
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5724/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5725 * Try to retrieve the server associated to the appsession.
5726 * If the server is found, it's assigned to the session.
5727 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5728void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5729 struct http_txn *txn = &t->txn;
5730 appsess *asession = NULL;
5731 char *sessid_temp = NULL;
5732
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5733 if (len > t->be->appsession_len) {
5734 len = t->be->appsession_len;
5735 }
5736
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5737 if (t->be->options2 & PR_O2_AS_REQL) {
5738 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5739 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5740 /* 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]5741 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5742 }
5743
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5744 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5745 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5746 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5747 return;
5748 }
5749
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5750 memcpy(txn->sessid, buf, len);
5751 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5752 }
5753
5754 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
5755 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5756 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5757 return;
5758 }
5759
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5760 memcpy(sessid_temp, buf, len);
5761 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5762
5763 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
5764 /* free previously allocated memory */
5765 pool_free2(apools.sessid, sessid_temp);
5766
5767 if (asession != NULL) {
5768 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
5769 if (!(t->be->options2 & PR_O2_AS_REQL))
5770 asession->request_count++;
5771
5772 if (asession->serverid != NULL) {
5773 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5774
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5775 while (srv) {
5776 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]5777 if ((srv->state & SRV_RUNNING) ||
5778 (t->be->options & PR_O_PERSIST) ||
5779 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5780 /* we found the server and it's usable */
5781 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]5782 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5783 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]5784 set_target_server(&t->target, srv);
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]5785
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5786 break;
5787 } else {
5788 txn->flags &= ~TX_CK_MASK;
5789 txn->flags |= TX_CK_DOWN;
5790 }
5791 }
5792 srv = srv->next;
5793 }
5794 }
5795 }
5796}
5797
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5798/* Find the end of a cookie value contained between <s> and <e>. It works the
5799 * same way as with headers above except that the semi-colon also ends a token.
5800 * See RFC2965 for more information. Note that it requires a valid header to
5801 * return a valid result.
5802 */
5803char *find_cookie_value_end(char *s, const char *e)
5804{
5805 int quoted, qdpair;
5806
5807 quoted = qdpair = 0;
5808 for (; s < e; s++) {
5809 if (qdpair) qdpair = 0;
5810 else if (quoted) {
5811 if (*s == '\\') qdpair = 1;
5812 else if (*s == '"') quoted = 0;
5813 }
5814 else if (*s == '"') quoted = 1;
5815 else if (*s == ',' || *s == ';') return s;
5816 }
5817 return s;
5818}
5819
5820/* Delete a value in a header between delimiters <from> and <next> in buffer
5821 * <buf>. The number of characters displaced is returned, and the pointer to
5822 * the first delimiter is updated if required. The function tries as much as
5823 * possible to respect the following principles :
5824 * - replace <from> delimiter by the <next> one unless <from> points to a
5825 * colon, in which case <next> is simply removed
5826 * - set exactly one space character after the new first delimiter, unless
5827 * there are not enough characters in the block being moved to do so.
5828 * - remove unneeded spaces before the previous delimiter and after the new
5829 * one.
5830 *
5831 * It is the caller's responsibility to ensure that :
5832 * - <from> points to a valid delimiter or the colon ;
5833 * - <next> points to a valid delimiter or the final CR/LF ;
5834 * - there are non-space chars before <from> ;
5835 * - there is a CR/LF at or after <next>.
5836 */
5837int del_hdr_value(struct buffer *buf, char **from, char *next)
5838{
5839 char *prev = *from;
5840
5841 if (*prev == ':') {
5842 /* We're removing the first value, preserve the colon and add a
5843 * space if possible.
5844 */
5845 if (!http_is_crlf[(unsigned char)*next])
5846 next++;
5847 prev++;
5848 if (prev < next)
5849 *prev++ = ' ';
5850
5851 while (http_is_spht[(unsigned char)*next])
5852 next++;
5853 } else {
5854 /* Remove useless spaces before the old delimiter. */
5855 while (http_is_spht[(unsigned char)*(prev-1)])
5856 prev--;
5857 *from = prev;
5858
5859 /* copy the delimiter and if possible a space if we're
5860 * not at the end of the line.
5861 */
5862 if (!http_is_crlf[(unsigned char)*next]) {
5863 *prev++ = *next++;
5864 if (prev + 1 < next)
5865 *prev++ = ' ';
5866 while (http_is_spht[(unsigned char)*next])
5867 next++;
5868 }
5869 }
5870 return buffer_replace2(buf, prev, next, NULL, 0);
5871}
5872
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5873/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]5874 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5875 * desirable to call it only when needed. This code is quite complex because
5876 * of the multiple very crappy and ambiguous syntaxes we have to support. it
5877 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5878 */
5879void manage_client_side_cookies(struct session *t, struct buffer *req)
5880{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5881 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5882 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5883 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5884 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
5885 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5886
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5887 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]5888 old_idx = 0;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]5889 hdr_next = req->p + txn->req.sol + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5890
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5891 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5892 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5893 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5894
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5895 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5896 hdr_beg = hdr_next;
5897 hdr_end = hdr_beg + cur_hdr->len;
5898 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5899
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5900 /* We have one full header between hdr_beg and hdr_end, and the
5901 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5902 * "Cookie:" headers.
5903 */
5904
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5905 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5906 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5907 old_idx = cur_idx;
5908 continue;
5909 }
5910
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5911 del_from = NULL; /* nothing to be deleted */
5912 preserve_hdr = 0; /* assume we may kill the whole header */
5913
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5914 /* Now look for cookies. Conforming to RFC2109, we have to support
5915 * attributes whose name begin with a '$', and associate them with
5916 * the right cookie, if we want to delete this cookie.
5917 * So there are 3 cases for each cookie read :
5918 * 1) it's a special attribute, beginning with a '$' : ignore it.
5919 * 2) it's a server id cookie that we *MAY* want to delete : save
5920 * some pointers on it (last semi-colon, beginning of cookie...)
5921 * 3) it's an application cookie : we *MAY* have to delete a previous
5922 * "special" cookie.
5923 * At the end of loop, if a "special" cookie remains, we may have to
5924 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5925 * *MUST* delete it.
5926 *
5927 * Note: RFC2965 is unclear about the processing of spaces around
5928 * the equal sign in the ATTR=VALUE form. A careful inspection of
5929 * the RFC explicitly allows spaces before it, and not within the
5930 * tokens (attrs or values). An inspection of RFC2109 allows that
5931 * too but section 10.1.3 lets one think that spaces may be allowed
5932 * after the equal sign too, resulting in some (rare) buggy
5933 * implementations trying to do that. So let's do what servers do.
5934 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
5935 * allowed quoted strings in values, with any possible character
5936 * after a backslash, including control chars and delimitors, which
5937 * causes parsing to become ambiguous. Browsers also allow spaces
5938 * within values even without quotes.
5939 *
5940 * We have to keep multiple pointers in order to support cookie
5941 * removal at the beginning, middle or end of header without
5942 * corrupting the header. All of these headers are valid :
5943 *
5944 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
5945 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
5946 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
5947 * | | | | | | | | |
5948 * | | | | | | | | hdr_end <--+
5949 * | | | | | | | +--> next
5950 * | | | | | | +----> val_end
5951 * | | | | | +-----------> val_beg
5952 * | | | | +--------------> equal
5953 * | | | +----------------> att_end
5954 * | | +---------------------> att_beg
5955 * | +--------------------------> prev
5956 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5957 */
5958
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5959 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
5960 /* Iterate through all cookies on this line */
5961
5962 /* find att_beg */
5963 att_beg = prev + 1;
5964 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
5965 att_beg++;
5966
5967 /* find att_end : this is the first character after the last non
5968 * space before the equal. It may be equal to hdr_end.
5969 */
5970 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5971
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5972 while (equal < hdr_end) {
5973 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5974 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5975 if (http_is_spht[(unsigned char)*equal++])
5976 continue;
5977 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5978 }
5979
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5980 /* here, <equal> points to '=', a delimitor or the end. <att_end>
5981 * is between <att_beg> and <equal>, both may be identical.
5982 */
5983
5984 /* look for end of cookie if there is an equal sign */
5985 if (equal < hdr_end && *equal == '=') {
5986 /* look for the beginning of the value */
5987 val_beg = equal + 1;
5988 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
5989 val_beg++;
5990
5991 /* find the end of the value, respecting quotes */
5992 next = find_cookie_value_end(val_beg, hdr_end);
5993
5994 /* make val_end point to the first white space or delimitor after the value */
5995 val_end = next;
5996 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
5997 val_end--;
5998 } else {
5999 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6000 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6001
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6002 /* We have nothing to do with attributes beginning with '$'. However,
6003 * they will automatically be removed if a header before them is removed,
6004 * since they're supposed to be linked together.
6005 */
6006 if (*att_beg == '$')
6007 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6008
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6009 /* Ignore cookies with no equal sign */
6010 if (equal == next) {
6011 /* This is not our cookie, so we must preserve it. But if we already
6012 * scheduled another cookie for removal, we cannot remove the
6013 * complete header, but we can remove the previous block itself.
6014 */
6015 preserve_hdr = 1;
6016 if (del_from != NULL) {
6017 int delta = del_hdr_value(req, &del_from, prev);
6018 val_end += delta;
6019 next += delta;
6020 hdr_end += delta;
6021 hdr_next += delta;
6022 cur_hdr->len += delta;
6023 http_msg_move_end(&txn->req, delta);
6024 prev = del_from;
6025 del_from = NULL;
6026 }
6027 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6028 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6029
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6030 /* if there are spaces around the equal sign, we need to
6031 * strip them otherwise we'll get trouble for cookie captures,
6032 * or even for rewrites. Since this happens extremely rarely,
6033 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6034 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6035 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6036 int stripped_before = 0;
6037 int stripped_after = 0;
6038
6039 if (att_end != equal) {
6040 stripped_before = buffer_replace2(req, att_end, equal, NULL, 0);
6041 equal += stripped_before;
6042 val_beg += stripped_before;
6043 }
6044
6045 if (val_beg > equal + 1) {
6046 stripped_after = buffer_replace2(req, equal + 1, val_beg, NULL, 0);
6047 val_beg += stripped_after;
6048 stripped_before += stripped_after;
6049 }
6050
6051 val_end += stripped_before;
6052 next += stripped_before;
6053 hdr_end += stripped_before;
6054 hdr_next += stripped_before;
6055 cur_hdr->len += stripped_before;
6056 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6057 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6058 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6059
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6060 /* First, let's see if we want to capture this cookie. We check
6061 * that we don't already have a client side cookie, because we
6062 * can only capture one. Also as an optimisation, we ignore
6063 * cookies shorter than the declared name.
6064 */
6065 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6066 (val_end - att_beg >= t->fe->capture_namelen) &&
6067 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6068 int log_len = val_end - att_beg;
6069
6070 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6071 Alert("HTTP logging : out of memory.\n");
6072 } else {
6073 if (log_len > t->fe->capture_len)
6074 log_len = t->fe->capture_len;
6075 memcpy(txn->cli_cookie, att_beg, log_len);
6076 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6077 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6078 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6079
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6080 /* Persistence cookies in passive, rewrite or insert mode have the
6081 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6082 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6083 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6084 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6085 * For cookies in prefix mode, the form is :
6086 *
6087 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6088 */
6089 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6090 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6091 struct server *srv = t->be->srv;
6092 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6093
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6094 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6095 * have the server ID between val_beg and delim, and the original cookie between
6096 * delim+1 and val_end. Otherwise, delim==val_end :
6097 *
6098 * Cookie: NAME=SRV; # in all but prefix modes
6099 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6100 * | || || | |+-> next
6101 * | || || | +--> val_end
6102 * | || || +---------> delim
6103 * | || |+------------> val_beg
6104 * | || +-------------> att_end = equal
6105 * | |+-----------------> att_beg
6106 * | +------------------> prev
6107 * +-------------------------> hdr_beg
6108 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6109
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6110 if (t->be->options & PR_O_COOK_PFX) {
6111 for (delim = val_beg; delim < val_end; delim++)
6112 if (*delim == COOKIE_DELIM)
6113 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6114 } else {
6115 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6116 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6117 /* Now check if the cookie contains a date field, which would
6118 * appear after a vertical bar ('|') just after the server name
6119 * and before the delimiter.
6120 */
6121 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6122 if (vbar1) {
6123 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6124 * right is the last seen date. It is a base64 encoded
6125 * 30-bit value representing the UNIX date since the
6126 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6127 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6128 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6129 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6130 if (val_end - vbar1 >= 5) {
6131 val = b64tos30(vbar1);
6132 if (val > 0)
6133 txn->cookie_last_date = val << 2;
6134 }
6135 /* look for a second vertical bar */
6136 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6137 if (vbar1 && (val_end - vbar1 > 5)) {
6138 val = b64tos30(vbar1 + 1);
6139 if (val > 0)
6140 txn->cookie_first_date = val << 2;
6141 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6142 }
6143 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6144
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6145 /* if the cookie has an expiration date and the proxy wants to check
6146 * it, then we do that now. We first check if the cookie is too old,
6147 * then only if it has expired. We detect strict overflow because the
6148 * time resolution here is not great (4 seconds). Cookies with dates
6149 * in the future are ignored if their offset is beyond one day. This
6150 * allows an admin to fix timezone issues without expiring everyone
6151 * and at the same time avoids keeping unwanted side effects for too
6152 * long.
6153 */
6154 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6155 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6156 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6157 txn->flags &= ~TX_CK_MASK;
6158 txn->flags |= TX_CK_OLD;
6159 delim = val_beg; // let's pretend we have not found the cookie
6160 txn->cookie_first_date = 0;
6161 txn->cookie_last_date = 0;
6162 }
6163 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6164 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6165 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6166 txn->flags &= ~TX_CK_MASK;
6167 txn->flags |= TX_CK_EXPIRED;
6168 delim = val_beg; // let's pretend we have not found the cookie
6169 txn->cookie_first_date = 0;
6170 txn->cookie_last_date = 0;
6171 }
6172
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6173 /* Here, we'll look for the first running server which supports the cookie.
6174 * This allows to share a same cookie between several servers, for example
6175 * to dedicate backup servers to specific servers only.
6176 * However, to prevent clients from sticking to cookie-less backup server
6177 * when they have incidentely learned an empty cookie, we simply ignore
6178 * empty cookies and mark them as invalid.
6179 * The same behaviour is applied when persistence must be ignored.
6180 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6181 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6182 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6183
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6184 while (srv) {
6185 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6186 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6187 if ((srv->state & SRV_RUNNING) ||
6188 (t->be->options & PR_O_PERSIST) ||
6189 (t->flags & SN_FORCE_PRST)) {
6190 /* we found the server and we can use it */
6191 txn->flags &= ~TX_CK_MASK;
6192 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6193 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]6194 set_target_server(&t->target, srv);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6195 break;
6196 } else {
6197 /* we found a server, but it's down,
6198 * mark it as such and go on in case
6199 * another one is available.
6200 */
6201 txn->flags &= ~TX_CK_MASK;
6202 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6203 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6204 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6205 srv = srv->next;
6206 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6207
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6208 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6209 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6210 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6211 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6212 txn->flags |= TX_CK_UNUSED;
6213 else
6214 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6215 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6216
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6217 /* depending on the cookie mode, we may have to either :
6218 * - delete the complete cookie if we're in insert+indirect mode, so that
6219 * the server never sees it ;
6220 * - remove the server id from the cookie value, and tag the cookie as an
6221 * application cookie so that it does not get accidentely removed later,
6222 * if we're in cookie prefix mode
6223 */
6224 if ((t->be->options & PR_O_COOK_PFX) && (delim != val_end)) {
6225 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6226
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6227 delta = buffer_replace2(req, val_beg, delim + 1, NULL, 0);
6228 val_end += delta;
6229 next += delta;
6230 hdr_end += delta;
6231 hdr_next += delta;
6232 cur_hdr->len += delta;
6233 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6234
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6235 del_from = NULL;
6236 preserve_hdr = 1; /* we want to keep this cookie */
6237 }
6238 else if (del_from == NULL &&
6239 (t->be->options & (PR_O_COOK_INS | PR_O_COOK_IND)) == (PR_O_COOK_INS | PR_O_COOK_IND)) {
6240 del_from = prev;
6241 }
6242 } else {
6243 /* This is not our cookie, so we must preserve it. But if we already
6244 * scheduled another cookie for removal, we cannot remove the
6245 * complete header, but we can remove the previous block itself.
6246 */
6247 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6248
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6249 if (del_from != NULL) {
6250 int delta = del_hdr_value(req, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6251 if (att_beg >= del_from)
6252 att_beg += delta;
6253 if (att_end >= del_from)
6254 att_end += delta;
6255 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6256 val_end += delta;
6257 next += delta;
6258 hdr_end += delta;
6259 hdr_next += delta;
6260 cur_hdr->len += delta;
6261 http_msg_move_end(&txn->req, delta);
6262 prev = del_from;
6263 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6264 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6265 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6266
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6267 /* Look for the appsession cookie unless persistence must be ignored */
6268 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6269 int cmp_len, value_len;
6270 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6271
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6272 if (t->be->options2 & PR_O2_AS_PFX) {
6273 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6274 value_begin = att_beg + t->be->appsession_name_len;
6275 value_len = val_end - att_beg - t->be->appsession_name_len;
6276 } else {
6277 cmp_len = att_end - att_beg;
6278 value_begin = val_beg;
6279 value_len = val_end - val_beg;
6280 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6281
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6282 /* let's see if the cookie is our appcookie */
6283 if (cmp_len == t->be->appsession_name_len &&
6284 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6285 manage_client_side_appsession(t, value_begin, value_len);
6286 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6287 }
6288
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6289 /* continue with next cookie on this header line */
6290 att_beg = next;
6291 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6292
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6293 /* There are no more cookies on this line.
6294 * We may still have one (or several) marked for deletion at the
6295 * end of the line. We must do this now in two ways :
6296 * - if some cookies must be preserved, we only delete from the
6297 * mark to the end of line ;
6298 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6299 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6300 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6301 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6302 if (preserve_hdr) {
6303 delta = del_hdr_value(req, &del_from, hdr_end);
6304 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6305 cur_hdr->len += delta;
6306 } else {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6307 delta = buffer_replace2(req, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6308
6309 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6310 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6311 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6312 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6313 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6314 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6315 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6316 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6317 }
6318
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6319 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6320 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6321 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6322}
6323
6324
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6325/* Iterate the same filter through all response headers contained in <rtr>.
6326 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6327 */
6328int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
6329{
6330 char term;
6331 char *cur_ptr, *cur_end, *cur_next;
6332 int cur_idx, old_idx, last_hdr;
6333 struct http_txn *txn = &t->txn;
6334 struct hdr_idx_elem *cur_hdr;
6335 int len, delta;
6336
6337 last_hdr = 0;
6338
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]6339 cur_next = rtr->p + txn->rsp.sol + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6340 old_idx = 0;
6341
6342 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6343 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6344 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6345 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6346 (exp->action == ACT_ALLOW ||
6347 exp->action == ACT_DENY))
6348 return 0;
6349
6350 cur_idx = txn->hdr_idx.v[old_idx].next;
6351 if (!cur_idx)
6352 break;
6353
6354 cur_hdr = &txn->hdr_idx.v[cur_idx];
6355 cur_ptr = cur_next;
6356 cur_end = cur_ptr + cur_hdr->len;
6357 cur_next = cur_end + cur_hdr->cr + 1;
6358
6359 /* Now we have one header between cur_ptr and cur_end,
6360 * and the next header starts at cur_next.
6361 */
6362
6363 /* The annoying part is that pattern matching needs
6364 * that we modify the contents to null-terminate all
6365 * strings before testing them.
6366 */
6367
6368 term = *cur_end;
6369 *cur_end = '\0';
6370
6371 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6372 switch (exp->action) {
6373 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6374 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6375 last_hdr = 1;
6376 break;
6377
6378 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6379 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6380 last_hdr = 1;
6381 break;
6382
6383 case ACT_REPLACE:
6384 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
6385 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
6386 /* FIXME: if the user adds a newline in the replacement, the
6387 * index will not be recalculated for now, and the new line
6388 * will not be counted as a new header.
6389 */
6390
6391 cur_end += delta;
6392 cur_next += delta;
6393 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6394 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6395 break;
6396
6397 case ACT_REMOVE:
6398 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
6399 cur_next += delta;
6400
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6401 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6402 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6403 txn->hdr_idx.used--;
6404 cur_hdr->len = 0;
6405 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6406 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6407 break;
6408
6409 }
6410 }
6411 if (cur_end)
6412 *cur_end = term; /* restore the string terminator */
6413
6414 /* keep the link from this header to next one in case of later
6415 * removal of next header.
6416 */
6417 old_idx = cur_idx;
6418 }
6419 return 0;
6420}
6421
6422
6423/* Apply the filter to the status line in the response buffer <rtr>.
6424 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6425 * or -1 if a replacement resulted in an invalid status line.
6426 */
6427int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
6428{
6429 char term;
6430 char *cur_ptr, *cur_end;
6431 int done;
6432 struct http_txn *txn = &t->txn;
6433 int len, delta;
6434
6435
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6436 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6437 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6438 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6439 (exp->action == ACT_ALLOW ||
6440 exp->action == ACT_DENY))
6441 return 0;
6442 else if (exp->action == ACT_REMOVE)
6443 return 0;
6444
6445 done = 0;
6446
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]6447 cur_ptr = rtr->p + txn->rsp.sol;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6448 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6449
6450 /* Now we have the status line between cur_ptr and cur_end */
6451
6452 /* The annoying part is that pattern matching needs
6453 * that we modify the contents to null-terminate all
6454 * strings before testing them.
6455 */
6456
6457 term = *cur_end;
6458 *cur_end = '\0';
6459
6460 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6461 switch (exp->action) {
6462 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6463 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6464 done = 1;
6465 break;
6466
6467 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6468 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6469 done = 1;
6470 break;
6471
6472 case ACT_REPLACE:
6473 *cur_end = term; /* restore the string terminator */
6474 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
6475 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
6476 /* FIXME: if the user adds a newline in the replacement, the
6477 * index will not be recalculated for now, and the new line
6478 * will not be counted as a new header.
6479 */
6480
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6481 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6482 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6483 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6484 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6485 cur_ptr, cur_end + 1,
6486 NULL, NULL);
6487 if (unlikely(!cur_end))
6488 return -1;
6489
6490 /* we have a full respnse and we know that we have either a CR
6491 * or an LF at <ptr>.
6492 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]6493 txn->status = strl2ui(rtr->p + txn->rsp.sol + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6494 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]6495 /* there is no point trying this regex on headers */
6496 return 1;
6497 }
6498 }
6499 *cur_end = term; /* restore the string terminator */
6500 return done;
6501}
6502
6503
6504
6505/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6506 * 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]6507 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6508 * unparsable response.
6509 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6510int apply_filters_to_response(struct session *s, struct buffer *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6511{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6512 struct http_txn *txn = &s->txn;
6513 struct hdr_exp *exp;
6514
6515 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6516 int ret;
6517
6518 /*
6519 * The interleaving of transformations and verdicts
6520 * makes it difficult to decide to continue or stop
6521 * the evaluation.
6522 */
6523
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6524 if (txn->flags & TX_SVDENY)
6525 break;
6526
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6527 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6528 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6529 exp->action == ACT_PASS)) {
6530 exp = exp->next;
6531 continue;
6532 }
6533
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6534 /* if this filter had a condition, evaluate it now and skip to
6535 * next filter if the condition does not match.
6536 */
6537 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6538 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]6539 ret = acl_pass(ret);
6540 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6541 ret = !ret;
6542 if (!ret)
6543 continue;
6544 }
6545
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6546 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6547 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6548 if (unlikely(ret < 0))
6549 return -1;
6550
6551 if (likely(ret == 0)) {
6552 /* The filter did not match the response, it can be
6553 * iterated through all headers.
6554 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6555 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6556 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6557 }
6558 return 0;
6559}
6560
6561
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6562/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6563 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6564 * desirable to call it only when needed. This function is also used when we
6565 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6566 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6567void manage_server_side_cookies(struct session *t, struct buffer *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6568{
6569 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6570 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6571 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6572 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6573 char *hdr_beg, *hdr_end, *hdr_next;
6574 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6575
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6576 /* Iterate through the headers.
6577 * we start with the start line.
6578 */
6579 old_idx = 0;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]6580 hdr_next = res->p + txn->rsp.sol + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6581
6582 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6583 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6584 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6585
6586 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6587 hdr_beg = hdr_next;
6588 hdr_end = hdr_beg + cur_hdr->len;
6589 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6590
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6591 /* We have one full header between hdr_beg and hdr_end, and the
6592 * next header starts at hdr_next. We're only interested in
6593 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6594 */
6595
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6596 is_cookie2 = 0;
6597 prev = hdr_beg + 10;
6598 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6599 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6600 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6601 if (!val) {
6602 old_idx = cur_idx;
6603 continue;
6604 }
6605 is_cookie2 = 1;
6606 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6607 }
6608
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6609 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
6610 * <prev> points to the colon.
6611 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6612 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6613
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6614 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
6615 * check-cache is enabled) and we are not interested in checking
6616 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6617 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]6618 if (t->be->cookie_name == NULL &&
6619 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6620 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6621 return;
6622
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6623 /* OK so now we know we have to process this response cookie.
6624 * The format of the Set-Cookie header is slightly different
6625 * from the format of the Cookie header in that it does not
6626 * support the comma as a cookie delimiter (thus the header
6627 * cannot be folded) because the Expires attribute described in
6628 * the original Netscape's spec may contain an unquoted date
6629 * with a comma inside. We have to live with this because
6630 * many browsers don't support Max-Age and some browsers don't
6631 * support quoted strings. However the Set-Cookie2 header is
6632 * clean.
6633 *
6634 * We have to keep multiple pointers in order to support cookie
6635 * removal at the beginning, middle or end of header without
6636 * corrupting the header (in case of set-cookie2). A special
6637 * pointer, <scav> points to the beginning of the set-cookie-av
6638 * fields after the first semi-colon. The <next> pointer points
6639 * either to the end of line (set-cookie) or next unquoted comma
6640 * (set-cookie2). All of these headers are valid :
6641 *
6642 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
6643 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6644 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6645 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
6646 * | | | | | | | | | |
6647 * | | | | | | | | +-> next hdr_end <--+
6648 * | | | | | | | +------------> scav
6649 * | | | | | | +--------------> val_end
6650 * | | | | | +--------------------> val_beg
6651 * | | | | +----------------------> equal
6652 * | | | +------------------------> att_end
6653 * | | +----------------------------> att_beg
6654 * | +------------------------------> prev
6655 * +-----------------------------------------> hdr_beg
6656 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6657
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6658 for (; prev < hdr_end; prev = next) {
6659 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6660
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6661 /* find att_beg */
6662 att_beg = prev + 1;
6663 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6664 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6665
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6666 /* find att_end : this is the first character after the last non
6667 * space before the equal. It may be equal to hdr_end.
6668 */
6669 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6670
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6671 while (equal < hdr_end) {
6672 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
6673 break;
6674 if (http_is_spht[(unsigned char)*equal++])
6675 continue;
6676 att_end = equal;
6677 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6678
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6679 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6680 * is between <att_beg> and <equal>, both may be identical.
6681 */
6682
6683 /* look for end of cookie if there is an equal sign */
6684 if (equal < hdr_end && *equal == '=') {
6685 /* look for the beginning of the value */
6686 val_beg = equal + 1;
6687 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6688 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6689
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6690 /* find the end of the value, respecting quotes */
6691 next = find_cookie_value_end(val_beg, hdr_end);
6692
6693 /* make val_end point to the first white space or delimitor after the value */
6694 val_end = next;
6695 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6696 val_end--;
6697 } else {
6698 /* <equal> points to next comma, semi-colon or EOL */
6699 val_beg = val_end = next = equal;
6700 }
6701
6702 if (next < hdr_end) {
6703 /* Set-Cookie2 supports multiple cookies, and <next> points to
6704 * a colon or semi-colon before the end. So skip all attr-value
6705 * pairs and look for the next comma. For Set-Cookie, since
6706 * commas are permitted in values, skip to the end.
6707 */
6708 if (is_cookie2)
6709 next = find_hdr_value_end(next, hdr_end);
6710 else
6711 next = hdr_end;
6712 }
6713
6714 /* Now everything is as on the diagram above */
6715
6716 /* Ignore cookies with no equal sign */
6717 if (equal == val_end)
6718 continue;
6719
6720 /* If there are spaces around the equal sign, we need to
6721 * strip them otherwise we'll get trouble for cookie captures,
6722 * or even for rewrites. Since this happens extremely rarely,
6723 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6724 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6725 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6726 int stripped_before = 0;
6727 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6728
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6729 if (att_end != equal) {
6730 stripped_before = buffer_replace2(res, att_end, equal, NULL, 0);
6731 equal += stripped_before;
6732 val_beg += stripped_before;
6733 }
6734
6735 if (val_beg > equal + 1) {
6736 stripped_after = buffer_replace2(res, equal + 1, val_beg, NULL, 0);
6737 val_beg += stripped_after;
6738 stripped_before += stripped_after;
6739 }
6740
6741 val_end += stripped_before;
6742 next += stripped_before;
6743 hdr_end += stripped_before;
6744 hdr_next += stripped_before;
6745 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]6746 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6747 }
6748
6749 /* First, let's see if we want to capture this cookie. We check
6750 * that we don't already have a server side cookie, because we
6751 * can only capture one. Also as an optimisation, we ignore
6752 * cookies shorter than the declared name.
6753 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6754 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]6755 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6756 (val_end - att_beg >= t->fe->capture_namelen) &&
6757 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6758 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]6759 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6760 Alert("HTTP logging : out of memory.\n");
6761 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]6762 else {
6763 if (log_len > t->fe->capture_len)
6764 log_len = t->fe->capture_len;
6765 memcpy(txn->srv_cookie, att_beg, log_len);
6766 txn->srv_cookie[log_len] = 0;
6767 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6768 }
6769
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6770 srv = target_srv(&t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6771 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6772 if (!(t->flags & SN_IGNORE_PRST) &&
6773 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6774 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6775 /* assume passive cookie by default */
6776 txn->flags &= ~TX_SCK_MASK;
6777 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6778
6779 /* If the cookie is in insert mode on a known server, we'll delete
6780 * this occurrence because we'll insert another one later.
6781 * 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]6782 * a direct access.
6783 */
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]6784 if (t->be->options2 & PR_O2_COOK_PSV) {
6785 /* The "preserve" flag was set, we don't want to touch the
6786 * server's cookie.
6787 */
6788 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6789 else if ((srv && (t->be->options & PR_O_COOK_INS)) ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]6790 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6791 /* this cookie must be deleted */
6792 if (*prev == ':' && next == hdr_end) {
6793 /* whole header */
6794 delta = buffer_replace2(res, hdr_beg, hdr_next, NULL, 0);
6795 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6796 txn->hdr_idx.used--;
6797 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6798 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6799 hdr_next += delta;
6800 http_msg_move_end(&txn->rsp, delta);
6801 /* note: while both invalid now, <next> and <hdr_end>
6802 * are still equal, so the for() will stop as expected.
6803 */
6804 } else {
6805 /* just remove the value */
6806 int delta = del_hdr_value(res, &prev, next);
6807 next = prev;
6808 hdr_end += delta;
6809 hdr_next += delta;
6810 cur_hdr->len += delta;
6811 http_msg_move_end(&txn->rsp, delta);
6812 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6813 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6814 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6815 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6816 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6817 else if (srv && srv->cookie && (t->be->options & PR_O_COOK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6818 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6819 * with this server since we know it.
6820 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6821 delta = buffer_replace2(res, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6822 next += delta;
6823 hdr_end += delta;
6824 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6825 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6826 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6827
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6828 txn->flags &= ~TX_SCK_MASK;
6829 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6830 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6831 else if (srv && srv && (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6832 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6833 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6834 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6835 delta = buffer_replace2(res, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6836 next += delta;
6837 hdr_end += delta;
6838 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6839 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6840 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6841
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6842 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6843 txn->flags &= ~TX_SCK_MASK;
6844 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6845 }
6846 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6847 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
6848 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6849 int cmp_len, value_len;
6850 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6851
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6852 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6853 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6854 value_begin = att_beg + t->be->appsession_name_len;
6855 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]6856 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6857 cmp_len = att_end - att_beg;
6858 value_begin = val_beg;
6859 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6860 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6861
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]6862 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6863 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
6864 /* free a possibly previously allocated memory */
6865 pool_free2(apools.sessid, txn->sessid);
6866
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6867 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6868 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6869 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
6870 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
6871 return;
6872 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6873 memcpy(txn->sessid, value_begin, value_len);
6874 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6875 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6876 }
6877 /* that's done for this cookie, check the next one on the same
6878 * line when next != hdr_end (only if is_cookie2).
6879 */
6880 }
6881 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6882 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6883 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6884
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6885 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6886 appsess *asession = NULL;
6887 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6888 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6889 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]6890 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6891 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
6892 Alert("Not enough Memory process_srv():asession:calloc().\n");
6893 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
6894 return;
6895 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]6896 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
6897
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6898 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
6899 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
6900 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]6901 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6902 return;
6903 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6904 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6905 asession->sessid[t->be->appsession_len] = 0;
6906
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6907 server_id_len = strlen(target_srv(&t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6908 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]6909 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6910 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]6911 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6912 return;
6913 }
6914 asession->serverid[0] = '\0';
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6915 memcpy(asession->serverid, target_srv(&t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6916
6917 asession->request_count = 0;
6918 appsession_hash_insert(&(t->be->htbl_proxy), asession);
6919 }
6920
6921 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6922 asession->request_count++;
6923 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6924}
6925
6926
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6927/*
6928 * Check if response is cacheable or not. Updates t->flags.
6929 */
6930void check_response_for_cacheability(struct session *t, struct buffer *rtr)
6931{
6932 struct http_txn *txn = &t->txn;
6933 char *p1, *p2;
6934
6935 char *cur_ptr, *cur_end, *cur_next;
6936 int cur_idx;
6937
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]6938 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6939 return;
6940
6941 /* Iterate through the headers.
6942 * we start with the start line.
6943 */
6944 cur_idx = 0;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]6945 cur_next = rtr->p + txn->rsp.sol + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6946
6947 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
6948 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6949 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6950
6951 cur_hdr = &txn->hdr_idx.v[cur_idx];
6952 cur_ptr = cur_next;
6953 cur_end = cur_ptr + cur_hdr->len;
6954 cur_next = cur_end + cur_hdr->cr + 1;
6955
6956 /* We have one full header between cur_ptr and cur_end, and the
6957 * next header starts at cur_next. We're only interested in
6958 * "Cookie:" headers.
6959 */
6960
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6961 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
6962 if (val) {
6963 if ((cur_end - (cur_ptr + val) >= 8) &&
6964 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
6965 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
6966 return;
6967 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6968 }
6969
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6970 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
6971 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6972 continue;
6973
6974 /* OK, right now we know we have a cache-control header at cur_ptr */
6975
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6976 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6977
6978 if (p1 >= cur_end) /* no more info */
6979 continue;
6980
6981 /* p1 is at the beginning of the value */
6982 p2 = p1;
6983
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]6984 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6985 p2++;
6986
6987 /* we have a complete value between p1 and p2 */
6988 if (p2 < cur_end && *p2 == '=') {
6989 /* we have something of the form no-cache="set-cookie" */
6990 if ((cur_end - p1 >= 21) &&
6991 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
6992 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6993 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6994 continue;
6995 }
6996
6997 /* OK, so we know that either p2 points to the end of string or to a comma */
6998 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
6999 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7000 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7001 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7002 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7003 return;
7004 }
7005
7006 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7007 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7008 continue;
7009 }
7010 }
7011}
7012
7013
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7014/*
7015 * Try to retrieve a known appsession in the URI, then the associated server.
7016 * If the server is found, it's assigned to the session.
7017 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7018void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7019{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7020 char *end_params, *first_param, *cur_param, *next_param;
7021 char separator;
7022 int value_len;
7023
7024 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7025
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7026 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7027 (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]7028 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7029 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7030
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7031 first_param = NULL;
7032 switch (mode) {
7033 case PR_O2_AS_M_PP:
7034 first_param = memchr(begin, ';', len);
7035 break;
7036 case PR_O2_AS_M_QS:
7037 first_param = memchr(begin, '?', len);
7038 break;
7039 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7040
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7041 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7042 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7043 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7044
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7045 switch (mode) {
7046 case PR_O2_AS_M_PP:
7047 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7048 end_params = (char *) begin + len;
7049 }
7050 separator = ';';
7051 break;
7052 case PR_O2_AS_M_QS:
7053 end_params = (char *) begin + len;
7054 separator = '&';
7055 break;
7056 default:
7057 /* unknown mode, shouldn't happen */
7058 return;
7059 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7060
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7061 cur_param = next_param = end_params;
7062 while (cur_param > first_param) {
7063 cur_param--;
7064 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7065 /* let's see if this is the appsession parameter */
7066 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7067 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7068 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7069 /* Cool... it's the right one */
7070 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7071 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7072 if (value_len > 0) {
7073 manage_client_side_appsession(t, cur_param, value_len);
7074 }
7075 break;
7076 }
7077 next_param = cur_param;
7078 }
7079 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7080#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7081 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7082 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7083#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7084}
7085
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7086/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7087 * 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]7088 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7089 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7090 * 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]7091 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7092 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7093 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7094 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7095int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7096{
7097 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7098 struct http_msg *msg = &txn->req;
7099 const char *uri = msg->buf->p + msg->sol + msg->sl.rq.u;
7100 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7101
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7102 if (!uri_auth)
7103 return 0;
7104
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7105 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]7106 return 0;
7107
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7108 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7109 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7110
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7111 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7112 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7113 return 0;
7114
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7115 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7116 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7117 return 0;
7118
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7119 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7120 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7121 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7122 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7123 break;
7124 }
7125 h++;
7126 }
7127
7128 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7129 h = uri + uri_auth->uri_len;
7130 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7131 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7132 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7133 break;
7134 }
7135 h++;
7136 }
7137 }
7138
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7139 h = uri + uri_auth->uri_len;
7140 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7141 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7142 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7143 break;
7144 }
7145 h++;
7146 }
7147
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7148 h = uri + uri_auth->uri_len;
7149 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7150 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7151 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7152 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7153 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7154 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7155 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7156 si->applet.ctx.stats.st_code = i;
7157 break;
7158 }
7159 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7160 break;
7161 }
7162 h++;
7163 }
7164
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7165 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7166
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7167 return 1;
7168}
7169
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7170/*
7171 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7172 * By default it tries to report the error position as msg->err_pos. However if
7173 * this one is not set, it will then report msg->next, which is the last known
7174 * parsing point. The function is able to deal with wrapping buffers. It always
7175 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7176 */
7177void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7178 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7179 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7180{
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7181 struct buffer *buf = msg->buf;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7182 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7183
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7184 es->len = MIN(buf->i, sizeof(es->buf));
7185 len1 = buf->data + buf->size - buf->p;
7186 len1 = MIN(len1, es->len);
7187 len2 = es->len - len1; /* remaining data if buffer wraps */
7188
7189 memcpy(es->buf, buf->p, len1);
7190 if (len2)
7191 memcpy(es->buf + len1, buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7192
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7193 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7194 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7195 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7196 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7197
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7198 es->when = date; // user-visible date
7199 es->sid = s->uniq_id;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7200 es->srv = target_srv(&s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7201 es->oe = other_end;
Willy Tarreau6471afb2011-09-23 10:54:59 +0200[diff] [blame]7202 es->src = s->req->prod->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7203 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7204 es->ev_id = error_snapshot_id++;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7205 es->b_flags = buf->flags;
7206 es->s_flags = s->flags;
7207 es->t_flags = s->txn.flags;
7208 es->m_flags = msg->flags;
7209 es->b_out = buf->o;
7210 es->b_wrap = buf->data + buf->size - buf->p;
7211 es->b_tot = buf->total;
7212 es->m_clen = msg->chunk_len;
7213 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7214}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7215
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7216/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7217 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7218 * performed over the whole headers. Otherwise it must contain a valid header
7219 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7220 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7221 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7222 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7223 * -1.
7224 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7225 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7226unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7227 struct hdr_idx *idx, int occ,
7228 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7229{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7230 struct hdr_ctx local_ctx;
7231 char *ptr_hist[MAX_HDR_HISTORY];
7232 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7233 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7234 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7235
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7236 if (!ctx) {
7237 local_ctx.idx = 0;
7238 ctx = &local_ctx;
7239 }
7240
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7241 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7242 /* search from the beginning */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7243 while (http_find_header2(hname, hlen, msg->buf->p + msg->sol, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7244 occ--;
7245 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7246 *vptr = ctx->line + ctx->val;
7247 *vlen = ctx->vlen;
7248 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7249 }
7250 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7251 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7252 }
7253
7254 /* negative occurrence, we scan all the list then walk back */
7255 if (-occ > MAX_HDR_HISTORY)
7256 return 0;
7257
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7258 found = hist_ptr = 0;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7259 while (http_find_header2(hname, hlen, msg->buf->p + msg->sol, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7260 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7261 len_hist[hist_ptr] = ctx->vlen;
7262 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7263 hist_ptr = 0;
7264 found++;
7265 }
7266 if (-occ > found)
7267 return 0;
7268 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7269 * find occurrence -occ, so we have to check [hist_ptr+occ].
7270 */
7271 hist_ptr += occ;
7272 if (hist_ptr >= MAX_HDR_HISTORY)
7273 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7274 *vptr = ptr_hist[hist_ptr];
7275 *vlen = len_hist[hist_ptr];
7276 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7277}
7278
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7279/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7280 * Print a debug line with a header
7281 */
7282void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7283{
7284 int len, max;
7285 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]7286 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7287 max = end - start;
7288 UBOUND(max, sizeof(trash) - len - 1);
7289 len += strlcpy2(trash + len, start, max + 1);
7290 trash[len++] = '\n';
Willy Tarreau21337822012-04-29 14:11:38 +0200[diff] [blame]7291 if (write(1, trash, len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7292}
7293
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7294/*
7295 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7296 * the required fields are properly allocated and that we only need to (re)init
7297 * them. This should be used before processing any new request.
7298 */
7299void http_init_txn(struct session *s)
7300{
7301 struct http_txn *txn = &s->txn;
7302 struct proxy *fe = s->fe;
7303
7304 txn->flags = 0;
7305 txn->status = -1;
7306
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7307 global.req_count++;
7308
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7309 txn->cookie_first_date = 0;
7310 txn->cookie_last_date = 0;
7311
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7312 txn->req.flags = 0;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7313 txn->req.sol = txn->req.eol = txn->req.som = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7314 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7315 txn->rsp.flags = 0;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7316 txn->rsp.sol = txn->rsp.eol = txn->rsp.som = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7317 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7318 txn->req.chunk_len = 0LL;
7319 txn->req.body_len = 0LL;
7320 txn->rsp.chunk_len = 0LL;
7321 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7322 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7323 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]7324 txn->req.buf = s->req;
7325 txn->rsp.buf = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7326
7327 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7328
7329 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7330 if (fe->options2 & PR_O2_REQBUG_OK)
7331 txn->req.err_pos = -1; /* let buggy requests pass */
7332
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7333 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7334 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7335
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7336 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7337 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7338
7339 if (txn->hdr_idx.v)
7340 hdr_idx_init(&txn->hdr_idx);
7341}
7342
7343/* to be used at the end of a transaction */
7344void http_end_txn(struct session *s)
7345{
7346 struct http_txn *txn = &s->txn;
7347
7348 /* these ones will have been dynamically allocated */
7349 pool_free2(pool2_requri, txn->uri);
7350 pool_free2(pool2_capture, txn->cli_cookie);
7351 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7352 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7353 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7354
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7355 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7356 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7357 txn->uri = NULL;
7358 txn->srv_cookie = NULL;
7359 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7360
7361 if (txn->req.cap) {
7362 struct cap_hdr *h;
7363 for (h = s->fe->req_cap; h; h = h->next)
7364 pool_free2(h->pool, txn->req.cap[h->index]);
7365 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7366 }
7367
7368 if (txn->rsp.cap) {
7369 struct cap_hdr *h;
7370 for (h = s->fe->rsp_cap; h; h = h->next)
7371 pool_free2(h->pool, txn->rsp.cap[h->index]);
7372 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7373 }
7374
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7375}
7376
7377/* to be used at the end of a transaction to prepare a new one */
7378void http_reset_txn(struct session *s)
7379{
7380 http_end_txn(s);
7381 http_init_txn(s);
7382
7383 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7384 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7385 session_del_srv_conn(s);
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]7386 clear_target(&s->target);
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7387 /* re-init store persistence */
7388 s->store_count = 0;
7389
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7390 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7391
7392 s->req->flags |= BF_READ_DONTWAIT; /* one read is usually enough */
7393
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7394 /* We must trim any excess data from the response buffer, because we
7395 * may have blocked an invalid response from a server that we don't
7396 * want to accidentely forward once we disable the analysers, nor do
7397 * we want those data to come along with next response. A typical
7398 * example of such data would be from a buggy server responding to
7399 * a HEAD with some data, or sending more than the advertised
7400 * content-length.
7401 */
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]7402 if (unlikely(s->rep->i))
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]7403 s->rep->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7404
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7405 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7406 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7407
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7408 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7409 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7410
7411 s->req->rex = TICK_ETERNITY;
7412 s->req->wex = TICK_ETERNITY;
7413 s->req->analyse_exp = TICK_ETERNITY;
7414 s->rep->rex = TICK_ETERNITY;
7415 s->rep->wex = TICK_ETERNITY;
7416 s->rep->analyse_exp = TICK_ETERNITY;
7417}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7418
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7419void free_http_req_rules(struct list *r) {
7420 struct http_req_rule *tr, *pr;
7421
7422 list_for_each_entry_safe(pr, tr, r, list) {
7423 LIST_DEL(&pr->list);
7424 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7425 free(pr->http_auth.realm);
7426
7427 free(pr);
7428 }
7429}
7430
7431struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7432{
7433 struct http_req_rule *rule;
7434 int cur_arg;
7435
7436 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7437 if (!rule) {
7438 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7439 return NULL;
7440 }
7441
7442 if (!*args[0]) {
7443 goto req_error_parsing;
7444 } else if (!strcmp(args[0], "allow")) {
7445 rule->action = HTTP_REQ_ACT_ALLOW;
7446 cur_arg = 1;
7447 } else if (!strcmp(args[0], "deny")) {
7448 rule->action = HTTP_REQ_ACT_DENY;
7449 cur_arg = 1;
7450 } else if (!strcmp(args[0], "auth")) {
7451 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7452 cur_arg = 1;
7453
7454 while(*args[cur_arg]) {
7455 if (!strcmp(args[cur_arg], "realm")) {
7456 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7457 cur_arg+=2;
7458 continue;
7459 } else
7460 break;
7461 }
7462 } else {
7463req_error_parsing:
7464 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7465 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7466 return NULL;
7467 }
7468
7469 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7470 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7471 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7472
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7473 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7474 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7475 file, linenum, args[0], errmsg);
7476 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7477 return NULL;
7478 }
7479 rule->cond = cond;
7480 }
7481 else if (*args[cur_arg]) {
7482 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7483 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7484 file, linenum, args[0], args[cur_arg]);
7485 return NULL;
7486 }
7487
7488 return rule;
7489}
7490
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7491/************************************************************************/
7492/* The code below is dedicated to ACL parsing and matching */
7493/************************************************************************/
7494
7495
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7496/* This function ensures that the prerequisites for an L7 fetch are ready,
7497 * which means that a request or response is ready. If some data is missing,
7498 * 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]7499 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7500 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7501 *
7502 * The function returns :
7503 * 0 if some data is missing or if the requested data cannot be fetched
7504 * -1 if it is certain that we'll never have any HTTP message there
7505 * 1 if an HTTP message is ready
7506 */
7507static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7508acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7509 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7510{
7511 struct http_txn *txn = l7;
7512 struct http_msg *msg = &txn->req;
7513
7514 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7515 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7516 */
7517
7518 if (unlikely(!s || !txn))
7519 return 0;
7520
7521 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7522 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7523
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7524 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7525 if (unlikely(!s->req))
7526 return 0;
7527
7528 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
7529 if ((msg->msg_state == HTTP_MSG_ERROR) || (s->req->flags & BF_FULL)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7530 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7531 return -1;
7532 }
7533
7534 /* Try to decode HTTP request */
7535 if (likely(msg->next < s->req->i))
7536 http_msg_analyzer(msg, &txn->hdr_idx);
7537
7538 /* Still no valid request ? */
7539 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
7540 if ((msg->msg_state == HTTP_MSG_ERROR) || (s->req->flags & BF_FULL)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7541 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7542 return -1;
7543 }
7544 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7545 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7546 return 0;
7547 }
7548
7549 /* OK we just got a valid HTTP request. We have some minor
7550 * preparation to perform so that further checks can rely
7551 * on HTTP tests.
7552 */
7553 txn->meth = find_http_meth(msg->buf->p + msg->sol, msg->sl.rq.m_l);
7554 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7555 s->flags |= SN_REDIRECTABLE;
7556
7557 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7558 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7559 return -1;
7560 }
7561 }
7562
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7563 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7564 return 0; /* data might have moved and indexes changed */
7565
7566 /* otherwise everything's ready for the request */
7567 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7568 else {
7569 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7570 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7571 return 0;
7572 }
7573
7574 /* everything's OK */
7575 return 1;
7576}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7577
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7578#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7579 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]7580
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7581#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7582 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]7583
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7584
7585/* 1. Check on METHOD
7586 * We use the pre-parsed method if it is known, and store its number as an
7587 * integer. If it is unknown, we use the pointer and the length.
7588 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7589static 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]7590{
7591 int len, meth;
7592
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7593 len = strlen(*text);
7594 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7595
7596 pattern->val.i = meth;
7597 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7598 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7599 if (!pattern->ptr.str) {
7600 if (err)
7601 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7602 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7603 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7604 pattern->len = len;
7605 }
7606 return 1;
7607}
7608
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7609/* This function fetches the method of current HTTP request and stores
7610 * it in the global pattern struct as a chunk. There are two possibilities :
7611 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
7612 * in <len> and <ptr> is NULL ;
7613 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
7614 * <len> to its length.
7615 * This is intended to be used with acl_match_meth() only.
7616 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7617static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7618acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7619 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7620{
7621 int meth;
7622 struct http_txn *txn = l7;
7623
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7624 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7625
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7626 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7627 smp->type = SMP_T_UINT;
7628 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7629 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7630 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
7631 /* ensure the indexes are not affected */
7632 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7633 smp->type = SMP_T_CSTR;
7634 smp->data.str.len = txn->req.sl.rq.m_l;
7635 smp->data.str.str = txn->req.buf->p + txn->req.sol;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7636 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7637 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7638 return 1;
7639}
7640
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7641/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7642static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7643{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7644 int icase;
7645
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7646
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7647 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7648 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7649 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7650 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7651 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7652 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7653
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7654 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
7655 if (pattern->val.i != HTTP_METH_OTHER)
7656 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7657
7658 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7659 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7660 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7661
7662 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7663 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
7664 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7665 return ACL_PAT_FAIL;
7666 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7667}
7668
7669/* 2. Check on Request/Status Version
7670 * We simply compare strings here.
7671 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7672static 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]7673{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7674 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7675 if (!pattern->ptr.str) {
7676 if (err)
7677 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7678 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7679 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7680 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7681 return 1;
7682}
7683
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7684static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7685acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7686 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7687{
7688 struct http_txn *txn = l7;
7689 char *ptr;
7690 int len;
7691
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7692 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7693
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7694 len = txn->req.sl.rq.v_l;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7695 ptr = txn->req.buf->p + txn->req.sol + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7696
7697 while ((len-- > 0) && (*ptr++ != '/'));
7698 if (len <= 0)
7699 return 0;
7700
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7701 smp->type = SMP_T_CSTR;
7702 smp->data.str.str = ptr;
7703 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7704
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7705 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7706 return 1;
7707}
7708
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7709static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7710acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7711 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7712{
7713 struct http_txn *txn = l7;
7714 char *ptr;
7715 int len;
7716
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7717 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7718
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7719 len = txn->rsp.sl.st.v_l;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7720 ptr = txn->rsp.buf->p + txn->rsp.sol;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7721
7722 while ((len-- > 0) && (*ptr++ != '/'));
7723 if (len <= 0)
7724 return 0;
7725
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7726 smp->type = SMP_T_CSTR;
7727 smp->data.str.str = ptr;
7728 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7729
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7730 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7731 return 1;
7732}
7733
7734/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7735static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7736acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7737 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7738{
7739 struct http_txn *txn = l7;
7740 char *ptr;
7741 int len;
7742
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7743 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7744
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7745 len = txn->rsp.sl.st.c_l;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7746 ptr = txn->rsp.buf->p + txn->rsp.sol + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7747
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7748 smp->type = SMP_T_UINT;
7749 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7750 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7751 return 1;
7752}
7753
7754/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7755static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7756acl_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7757 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7758{
7759 struct http_txn *txn = l7;
7760
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7761 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7762
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7763 smp->type = SMP_T_CSTR;
7764 smp->data.str.len = txn->req.sl.rq.u_l;
7765 smp->data.str.str = txn->req.buf->p + txn->req.sol + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7766 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7767 return 1;
7768}
7769
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7770static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7771acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7772 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7773{
7774 struct http_txn *txn = l7;
7775
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7776 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7777
7778 /* Parse HTTP request */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7779 url2sa(txn->req.buf->p + txn->req.sol + 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]7780 if (((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_family != AF_INET)
7781 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7782 smp->type = SMP_T_IPV4;
7783 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7784
7785 /*
7786 * If we are parsing url in frontend space, we prepare backend stage
7787 * to not parse again the same url ! optimization lazyness...
7788 */
7789 if (px->options & PR_O_HTTP_PROXY)
7790 l4->flags |= SN_ADDR_SET;
7791
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7792 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7793 return 1;
7794}
7795
7796static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7797acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7798 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7799{
7800 struct http_txn *txn = l7;
7801
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7802 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7803
7804 /* Same optimization as url_ip */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7805 url2sa(txn->req.buf->p + txn->req.sol + 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]7806 smp->type = SMP_T_UINT;
7807 smp->data.uint = ntohs(((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_port);
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7808
7809 if (px->options & PR_O_HTTP_PROXY)
7810 l4->flags |= SN_ADDR_SET;
7811
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7812 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7813 return 1;
7814}
7815
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7816/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
7817 * Accepts an optional argument of type string containing the header field name,
7818 * and an optional argument of type signed or unsigned integer to request an
7819 * explicit occurrence of the header. Note that in the event of a missing name,
7820 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7821 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7822static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7823smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7824 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7825{
7826 struct http_txn *txn = l7;
7827 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7828 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7829 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]7830 int occ = 0;
7831 const char *name_str = NULL;
7832 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7833
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7834 if (args) {
7835 if (args[0].type != ARGT_STR)
7836 return 0;
7837 name_str = args[0].data.str.str;
7838 name_len = args[0].data.str.len;
7839
7840 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
7841 occ = args[1].data.uint;
7842 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7843
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7844 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7845
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7846 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7847 /* search for header from the beginning */
7848 ctx->idx = 0;
7849
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7850 if (!occ && !(opt & SMP_OPT_ITERATE))
7851 /* no explicit occurrence and single fetch => last header by default */
7852 occ = -1;
7853
7854 if (!occ)
7855 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7856 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]7857
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7858 smp->type = SMP_T_CSTR;
7859 smp->flags |= SMP_F_VOL_HDR;
7860 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]7861 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7862
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7863 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7864 return 0;
7865}
7866
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7867/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7868 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7869 */
7870static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7871smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7872 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7873{
7874 struct http_txn *txn = l7;
7875 struct hdr_idx *idx = &txn->hdr_idx;
7876 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7877 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]7878 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7879
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7880 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7881 return 0;
7882
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7883 CHECK_HTTP_MESSAGE_FIRST();
7884
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7885 ctx.idx = 0;
7886 cnt = 0;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7887 while (http_find_header2(args->data.str.str, args->data.str.len, msg->buf->p + msg->sol, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7888 cnt++;
7889
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7890 smp->type = SMP_T_UINT;
7891 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7892 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7893 return 1;
7894}
7895
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7896/* Fetch an HTTP header's integer value. The integer value is returned. It
7897 * takes a mandatory argument of type string and an optional one of type int
7898 * to designate a specific occurrence. It returns an unsigned integer, which
7899 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7900 */
7901static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7902smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7903 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7904{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7905 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7906
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7907 if (ret > 0) {
7908 smp->type = SMP_T_UINT;
7909 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
7910 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7911
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]7912 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7913}
7914
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7915/* Fetch an HTTP header's integer value. The integer value is returned. It
7916 * takes a mandatory argument of type string and an optional one of type int
7917 * to designate a specific occurrence. It returns an IPv4 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]7918 */
7919static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7920smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7921 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]7922{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]7923 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7924
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7925 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7926 smp->type = SMP_T_IPV4;
7927 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4))
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]7928 break;
7929 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7930 if (!(smp->flags & SMP_F_NOT_LAST))
7931 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]7932 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]7933 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]7934}
7935
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]7936/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
7937 * the first '/' after the possible hostname, and ends before the possible '?'.
7938 */
7939static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7940acl_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7941 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]7942{
7943 struct http_txn *txn = l7;
7944 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7945
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7946 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7947
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7948 end = txn->req.buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]7949 ptr = http_get_path(txn);
7950 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]7951 return 0;
7952
7953 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7954 smp->type = SMP_T_CSTR;
7955 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]7956
7957 while (ptr < end && *ptr != '?')
7958 ptr++;
7959
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7960 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7961 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]7962 return 1;
7963}
7964
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]7965static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7966acl_fetch_proto_http(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 Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]7968{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]7969 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7970 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7971 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]7972
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7973 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]7974
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7975 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7976 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]7977 return 1;
7978}
7979
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]7980/* return a valid test if the current request is the first one on the connection */
7981static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7982acl_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]7983 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]7984{
7985 if (!s)
7986 return 0;
7987
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7988 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7989 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]7990 return 1;
7991}
7992
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7993/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7994static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7995acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7996 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7997{
7998
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7999 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8000 return 0;
8001
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8002 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8003
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8004 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8005 return 0;
8006
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8007 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8008 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]8009 return 1;
8010}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8011
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8012/* Accepts exactly 1 argument of type userlist */
8013static int
8014acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8015 const struct arg *args, struct sample *smp)
8016{
8017
8018 if (!args || args->type != ARGT_USR)
8019 return 0;
8020
8021 CHECK_HTTP_MESSAGE_FIRST();
8022
8023 if (!get_http_auth(l4))
8024 return 0;
8025
8026 /* acl_match_auth() will need several information at once */
8027 smp->ctx.a[0] = args->data.usr; /* user list */
8028 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8029 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8030
8031 /* if the user does not belong to the userlist or has a wrong password,
8032 * report that it unconditionally does not match. Otherwise we return
8033 * a non-zero integer which will be ignored anyway since all the params
8034 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8035 */
8036 smp->type = SMP_T_BOOL;
8037 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8038 if (smp->data.uint)
8039 smp->type = SMP_T_UINT;
8040
8041 return 1;
8042}
8043
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8044/* Try to find the next occurrence of a cookie name in a cookie header value.
8045 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8046 * the cookie value is returned into *value and *value_l, and the function
8047 * returns a pointer to the next pointer to search from if the value was found.
8048 * Otherwise if the cookie was not found, NULL is returned and neither value
8049 * nor value_l are touched. The input <hdr> string should first point to the
8050 * header's value, and the <hdr_end> pointer must point to the first character
8051 * not part of the value. <list> must be non-zero if value may represent a list
8052 * of values (cookie headers). This makes it faster to abort parsing when no
8053 * list is expected.
8054 */
8055static char *
8056extract_cookie_value(char *hdr, const char *hdr_end,
8057 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8058 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8059{
8060 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8061 char *next;
8062
8063 /* we search at least a cookie name followed by an equal, and more
8064 * generally something like this :
8065 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8066 */
8067 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8068 /* Iterate through all cookies on this line */
8069
8070 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8071 att_beg++;
8072
8073 /* find att_end : this is the first character after the last non
8074 * space before the equal. It may be equal to hdr_end.
8075 */
8076 equal = att_end = att_beg;
8077
8078 while (equal < hdr_end) {
8079 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8080 break;
8081 if (http_is_spht[(unsigned char)*equal++])
8082 continue;
8083 att_end = equal;
8084 }
8085
8086 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8087 * is between <att_beg> and <equal>, both may be identical.
8088 */
8089
8090 /* look for end of cookie if there is an equal sign */
8091 if (equal < hdr_end && *equal == '=') {
8092 /* look for the beginning of the value */
8093 val_beg = equal + 1;
8094 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8095 val_beg++;
8096
8097 /* find the end of the value, respecting quotes */
8098 next = find_cookie_value_end(val_beg, hdr_end);
8099
8100 /* make val_end point to the first white space or delimitor after the value */
8101 val_end = next;
8102 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8103 val_end--;
8104 } else {
8105 val_beg = val_end = next = equal;
8106 }
8107
8108 /* We have nothing to do with attributes beginning with '$'. However,
8109 * they will automatically be removed if a header before them is removed,
8110 * since they're supposed to be linked together.
8111 */
8112 if (*att_beg == '$')
8113 continue;
8114
8115 /* Ignore cookies with no equal sign */
8116 if (equal == next)
8117 continue;
8118
8119 /* Now we have the cookie name between att_beg and att_end, and
8120 * its value between val_beg and val_end.
8121 */
8122
8123 if (att_end - att_beg == cookie_name_l &&
8124 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8125 /* let's return this value and indicate where to go on from */
8126 *value = val_beg;
8127 *value_l = val_end - val_beg;
8128 return next + 1;
8129 }
8130
8131 /* Set-Cookie headers only have the name in the first attr=value part */
8132 if (!list)
8133 break;
8134 }
8135
8136 return NULL;
8137}
8138
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8139/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8140 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8141 * 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]8142 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8143 * 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]8144 * Accepts exactly 1 argument of type string. If the input options indicate
8145 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8146 */
8147static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8148smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8149 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8150{
8151 struct http_txn *txn = l7;
8152 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8153 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8154 const struct http_msg *msg;
8155 const char *hdr_name;
8156 int hdr_name_len;
8157 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8158 int occ = 0;
8159 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8160
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8161 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8162 return 0;
8163
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8164 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8165
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8166 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8167 msg = &txn->req;
8168 hdr_name = "Cookie";
8169 hdr_name_len = 6;
8170 } else {
8171 msg = &txn->rsp;
8172 hdr_name = "Set-Cookie";
8173 hdr_name_len = 10;
8174 }
8175
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8176 if (!occ && !(opt & SMP_OPT_ITERATE))
8177 /* no explicit occurrence and single fetch => last cookie by default */
8178 occ = -1;
8179
8180 /* OK so basically here, either we want only one value and it's the
8181 * last one, or we want to iterate over all of them and we fetch the
8182 * next one.
8183 */
8184
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8185 sol = msg->buf->p + msg->sol;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8186 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8187 /* search for the header from the beginning, we must first initialize
8188 * the search parameters.
8189 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8190 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8191 ctx->idx = 0;
8192 }
8193
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8194 smp->flags |= SMP_F_VOL_HDR;
8195
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8196 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8197 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8198 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8199 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8200 goto out;
8201
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8202 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8203 continue;
8204
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8205 smp->ctx.a[0] = ctx->line + ctx->val;
8206 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8207 }
8208
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8209 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8210 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]8211 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8212 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8213 &smp->data.str.str,
8214 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8215 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8216 found = 1;
8217 if (occ >= 0) {
8218 /* one value was returned into smp->data.str.{str,len} */
8219 smp->flags |= SMP_F_NOT_LAST;
8220 return 1;
8221 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8222 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8223 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8224 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8225 /* all cookie headers and values were scanned. If we're looking for the
8226 * last occurrence, we may return it now.
8227 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8228 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8229 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8230 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8231}
8232
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8233/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8234 * 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]8235 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8236 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8237 */
8238static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8239acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8240 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8241{
8242 struct http_txn *txn = l7;
8243 struct hdr_idx *idx = &txn->hdr_idx;
8244 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8245 const struct http_msg *msg;
8246 const char *hdr_name;
8247 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8248 int cnt;
8249 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8250 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8251
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8252 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8253 return 0;
8254
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8255 CHECK_HTTP_MESSAGE_FIRST();
8256
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8257 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8258 msg = &txn->req;
8259 hdr_name = "Cookie";
8260 hdr_name_len = 6;
8261 } else {
8262 msg = &txn->rsp;
8263 hdr_name = "Set-Cookie";
8264 hdr_name_len = 10;
8265 }
8266
8267 sol = msg->buf->p + msg->sol;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8268 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8269 ctx.idx = 0;
8270 cnt = 0;
8271
8272 while (1) {
8273 /* Note: val_beg == NULL every time we need to fetch a new header */
8274 if (!val_beg) {
8275 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8276 break;
8277
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8278 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8279 continue;
8280
8281 val_beg = ctx.line + ctx.val;
8282 val_end = val_beg + ctx.vlen;
8283 }
8284
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8285 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8286 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8287 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8288 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8289 &smp->data.str.str,
8290 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8291 cnt++;
8292 }
8293 }
8294
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8295 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8296 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8297 return 1;
8298}
8299
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8300/* Fetch an cookie's integer value. The integer value is returned. It
8301 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8302 */
8303static int
8304smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8305 const struct arg *args, struct sample *smp)
8306{
8307 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8308
8309 if (ret > 0) {
8310 smp->type = SMP_T_UINT;
8311 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8312 }
8313
8314 return ret;
8315}
8316
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8317/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8318/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8319/************************************************************************/
8320
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8321/*
8322 * Given a path string and its length, find the position of beginning of the
8323 * query string. Returns NULL if no query string is found in the path.
8324 *
8325 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8326 *
8327 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8328 */
8329static inline char *find_query_string(char *path, size_t path_l)
8330{
8331 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8332
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8333 p = memchr(path, '?', path_l);
8334 return p ? p + 1 : NULL;
8335}
8336
8337static inline int is_param_delimiter(char c)
8338{
8339 return c == '&' || c == ';';
8340}
8341
8342/*
8343 * Given a url parameter, find the starting position of the first occurence,
8344 * or NULL if the parameter is not found.
8345 *
8346 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8347 * the function will return query_string+8.
8348 */
8349static char*
8350find_url_param_pos(char* query_string, size_t query_string_l,
8351 char* url_param_name, size_t url_param_name_l)
8352{
8353 char *pos, *last;
8354
8355 pos = query_string;
8356 last = query_string + query_string_l - url_param_name_l - 1;
8357
8358 while (pos <= last) {
8359 if (pos[url_param_name_l] == '=') {
8360 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8361 return pos;
8362 pos += url_param_name_l + 1;
8363 }
8364 while (pos <= last && !is_param_delimiter(*pos))
8365 pos++;
8366 pos++;
8367 }
8368 return NULL;
8369}
8370
8371/*
8372 * Given a url parameter name, returns its value and size into *value and
8373 * *value_l respectively, and returns non-zero. If the parameter is not found,
8374 * zero is returned and value/value_l are not touched.
8375 */
8376static int
8377find_url_param_value(char* path, size_t path_l,
8378 char* url_param_name, size_t url_param_name_l,
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8379 char** value, int* value_l)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8380{
8381 char *query_string, *qs_end;
8382 char *arg_start;
8383 char *value_start, *value_end;
8384
8385 query_string = find_query_string(path, path_l);
8386 if (!query_string)
8387 return 0;
8388
8389 qs_end = path + path_l;
8390 arg_start = find_url_param_pos(query_string, qs_end - query_string,
8391 url_param_name, url_param_name_l);
8392 if (!arg_start)
8393 return 0;
8394
8395 value_start = arg_start + url_param_name_l + 1;
8396 value_end = value_start;
8397
8398 while ((value_end < qs_end) && !is_param_delimiter(*value_end))
8399 value_end++;
8400
8401 *value = value_start;
8402 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8403 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8404}
8405
8406static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8407smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8408 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8409{
8410 struct http_txn *txn = l7;
8411 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8412
8413 if (!args || args->type != ARGT_STR)
8414 return 0;
8415
8416 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8417
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8418 if (!find_url_param_value(msg->buf->p + msg->sol + msg->sl.rq.u, msg->sl.rq.u_l,
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8419 args->data.str.str, args->data.str.len,
8420 &smp->data.str.str, &smp->data.str.len))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8421 return 0;
8422
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8423 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8424 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8425 return 1;
8426}
8427
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8428/* This function is used to validate the arguments passed to any "hdr" fetch
8429 * keyword. These keywords support an optional positive or negative occurrence
8430 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8431 * is assumed that the types are already the correct ones. Returns 0 on error,
8432 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8433 * error message in case of error, that the caller is responsible for freeing.
8434 * The initial location must either be freeable or NULL.
8435 */
8436static int val_hdr(struct arg *arg, char **err_msg)
8437{
8438 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
8439 if (err_msg)
8440 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
8441 return 0;
8442 }
8443 return 1;
8444}
8445
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8446/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8447/* All supported ACL keywords must be declared here. */
8448/************************************************************************/
8449
8450/* Note: must not be declared <const> as its list will be overwritten.
8451 * Please take care of keeping this list alphabetically sorted.
8452 */
8453static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8454 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8455 { "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]8456 { "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]8457 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8458 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8459 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8460 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8461 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8462 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8463 { "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]8464
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8465 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8466 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8467 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8468 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8469 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8470 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8471 { "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 },
8472 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8473 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8474 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8475 { "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]8476
8477 { "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]8478 { "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]8479 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8480
8481 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8482
8483 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8484 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8485 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8486 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8487 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8488 { "path_len", acl_parse_int, acl_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8489 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8490 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8491
8492 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8493 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8494 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8495
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8496 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8497 { "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]8498 { "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]8499 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8500 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8501 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8502 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8503 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8504 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8505 { "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]8506
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8507 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8508 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8509 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8510 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8511 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8512 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8513 { "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 },
8514 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8515 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8516 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8517 { "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]8518
8519 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
8520
8521 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8522 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8523 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8524 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8525 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8526 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8527 { "url_len", acl_parse_int, acl_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8528 { "url_port", acl_parse_int, acl_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
8529 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8530 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8531
8532 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8533 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8534 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8535 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8536 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8537 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8538 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8539 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8540 { "urlp_sub", acl_parse_str, smp_fetch_url_param, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8541
8542 { NULL, NULL, NULL, NULL },
8543}};
8544
8545/************************************************************************/
8546/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8547/************************************************************************/
8548/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8549static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8550 { "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]8551 { "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]8552 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_REQ|SMP_CAP_RES },
8553 { "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]8554 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8555}};
8556
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8557
8558__attribute__((constructor))
8559static void __http_protocol_init(void)
8560{
8561 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8562 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8563}
8564
8565
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8566/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8567 * Local variables:
8568 * c-indent-level: 8
8569 * c-basic-offset: 8
8570 * End:
8571 */