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git01.mediatek.com / haproxy / c52962f292614c12e8489a4252193c586f9bb784 / . / src / proto_http.c
blob: b2ae01cc1a989b18282639fd23585c108aecbfba [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]95/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
96const char *HTTP_401_fmt =
97 "HTTP/1.0 401 Unauthorized\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]100 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
102 "\r\n"
103 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
104
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]105const char *HTTP_407_fmt =
106 "HTTP/1.0 407 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
109 "Content-Type: text/html\r\n"
110 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]116 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117 [HTTP_ERR_400] = 400,
118 [HTTP_ERR_403] = 403,
119 [HTTP_ERR_408] = 408,
120 [HTTP_ERR_500] = 500,
121 [HTTP_ERR_502] = 502,
122 [HTTP_ERR_503] = 503,
123 [HTTP_ERR_504] = 504,
124};
125
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]126static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]127 [HTTP_ERR_200] =
128 "HTTP/1.0 200 OK\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "\r\n"
133 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]136 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 "Cache-Control: no-cache\r\n"
138 "Connection: close\r\n"
139 "Content-Type: text/html\r\n"
140 "\r\n"
141 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
142
143 [HTTP_ERR_403] =
144 "HTTP/1.0 403 Forbidden\r\n"
145 "Cache-Control: no-cache\r\n"
146 "Connection: close\r\n"
147 "Content-Type: text/html\r\n"
148 "\r\n"
149 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
150
151 [HTTP_ERR_408] =
152 "HTTP/1.0 408 Request Time-out\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
158
159 [HTTP_ERR_500] =
160 "HTTP/1.0 500 Server Error\r\n"
161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
166
167 [HTTP_ERR_502] =
168 "HTTP/1.0 502 Bad Gateway\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
174
175 [HTTP_ERR_503] =
176 "HTTP/1.0 503 Service Unavailable\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
182
183 [HTTP_ERR_504] =
184 "HTTP/1.0 504 Gateway Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
190
191};
192
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]193/* status codes available for the stats admin page (strictly 4 chars length) */
194const char *stat_status_codes[STAT_STATUS_SIZE] = {
195 [STAT_STATUS_DENY] = "DENY",
196 [STAT_STATUS_DONE] = "DONE",
197 [STAT_STATUS_ERRP] = "ERRP",
198 [STAT_STATUS_EXCD] = "EXCD",
199 [STAT_STATUS_NONE] = "NONE",
200 [STAT_STATUS_PART] = "PART",
201 [STAT_STATUS_UNKN] = "UNKN",
202};
203
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205/* We must put the messages here since GCC cannot initialize consts depending
206 * on strlen().
207 */
208struct chunk http_err_chunks[HTTP_ERR_SIZE];
209
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210#define FD_SETS_ARE_BITFIELDS
211#ifdef FD_SETS_ARE_BITFIELDS
212/*
213 * This map is used with all the FD_* macros to check whether a particular bit
214 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
215 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
216 * byte should be encoded. Be careful to always pass bytes from 0 to 255
217 * exclusively to the macros.
218 */
219fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
221
222#else
223#error "Check if your OS uses bitfields for fd_sets"
224#endif
225
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]226void init_proto_http()
227{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]228 int i;
229 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]231
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]232 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
233 if (!http_err_msgs[msg]) {
234 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
235 abort();
236 }
237
238 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
239 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
240 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]241
242 /* initialize the log header encoding map : '{|}"#' should be encoded with
243 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
244 * URL encoding only requires '"', '#' to be encoded as well as non-
245 * printable characters above.
246 */
247 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
248 memset(url_encode_map, 0, sizeof(url_encode_map));
249 for (i = 0; i < 32; i++) {
250 FD_SET(i, hdr_encode_map);
251 FD_SET(i, url_encode_map);
252 }
253 for (i = 127; i < 256; i++) {
254 FD_SET(i, hdr_encode_map);
255 FD_SET(i, url_encode_map);
256 }
257
258 tmp = "\"#{|}";
259 while (*tmp) {
260 FD_SET(*tmp, hdr_encode_map);
261 tmp++;
262 }
263
264 tmp = "\"#";
265 while (*tmp) {
266 FD_SET(*tmp, url_encode_map);
267 tmp++;
268 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]269
270 /* memory allocations */
271 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]272 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]273 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]274}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]275
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]276/*
277 * We have 26 list of methods (1 per first letter), each of which can have
278 * up to 3 entries (2 valid, 1 null).
279 */
280struct http_method_desc {
281 http_meth_t meth;
282 int len;
283 const char text[8];
284};
285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]286const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]287 ['C' - 'A'] = {
288 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
289 },
290 ['D' - 'A'] = {
291 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
292 },
293 ['G' - 'A'] = {
294 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
295 },
296 ['H' - 'A'] = {
297 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
298 },
299 ['P' - 'A'] = {
300 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
301 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
302 },
303 ['T' - 'A'] = {
304 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
305 },
306 /* rest is empty like this :
307 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
308 */
309};
310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]311/* 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]312 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]313 * RFC2616 for those chars.
314 */
315
316const char http_is_spht[256] = {
317 [' '] = 1, ['\t'] = 1,
318};
319
320const char http_is_crlf[256] = {
321 ['\r'] = 1, ['\n'] = 1,
322};
323
324const char http_is_lws[256] = {
325 [' '] = 1, ['\t'] = 1,
326 ['\r'] = 1, ['\n'] = 1,
327};
328
329const char http_is_sep[256] = {
330 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
331 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
332 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
333 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
334 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
335};
336
337const char http_is_ctl[256] = {
338 [0 ... 31] = 1,
339 [127] = 1,
340};
341
342/*
343 * A token is any ASCII char that is neither a separator nor a CTL char.
344 * Do not overwrite values in assignment since gcc-2.95 will not handle
345 * them correctly. Instead, define every non-CTL char's status.
346 */
347const char http_is_token[256] = {
348 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
349 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
350 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
351 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
352 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
353 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
354 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
355 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
356 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
357 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
358 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
359 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
360 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
361 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
362 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
363 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
364 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
365 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
366 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
367 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
368 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
369 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
370 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
371 ['|'] = 1, ['}'] = 0, ['~'] = 1,
372};
373
374
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]375/*
376 * An http ver_token is any ASCII which can be found in an HTTP version,
377 * which includes 'H', 'T', 'P', '/', '.' and any digit.
378 */
379const char http_is_ver_token[256] = {
380 ['.'] = 1, ['/'] = 1,
381 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
382 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
383 ['H'] = 1, ['P'] = 1, ['T'] = 1,
384};
385
386
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]387/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]388 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
389 */
390#if defined(DEBUG_FSM)
391static void http_silent_debug(int line, struct session *s)
392{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]393 chunk_printf(&trash,
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",
395 line,
396 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
397 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
398 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]399
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]400 chunk_printf(&trash,
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",
402 line,
403 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
404 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
405 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]406}
407#else
408#define http_silent_debug(l,s) do { } while (0)
409#endif
410
411/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]412 * Adds a header and its CRLF at the tail of the message's buffer, just before
413 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]414 * The header is also automatically added to the index <hdr_idx>, and the end
415 * of headers is automatically adjusted. The number of bytes added is returned
416 * on success, otherwise <0 is returned indicating an error.
417 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]418int 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]419{
420 int bytes, len;
421
422 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]423 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]424 if (!bytes)
425 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]426 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]427 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
428}
429
430/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]431 * Adds a header and its CRLF at the tail of the message's buffer, just before
432 * 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]433 * the buffer is only opened and the space reserved, but nothing is copied.
434 * The header is also automatically added to the index <hdr_idx>, and the end
435 * of headers is automatically adjusted. The number of bytes added is returned
436 * on success, otherwise <0 is returned indicating an error.
437 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]438int http_header_add_tail2(struct http_msg *msg,
439 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]440{
441 int bytes;
442
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]443 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]444 if (!bytes)
445 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]446 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]447 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
448}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]449
450/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]451 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
452 * If so, returns the position of the first non-space character relative to
453 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
454 * to return a pointer to the place after the first space. Returns 0 if the
455 * header name does not match. Checks are case-insensitive.
456 */
457int http_header_match2(const char *hdr, const char *end,
458 const char *name, int len)
459{
460 const char *val;
461
462 if (hdr + len >= end)
463 return 0;
464 if (hdr[len] != ':')
465 return 0;
466 if (strncasecmp(hdr, name, len) != 0)
467 return 0;
468 val = hdr + len + 1;
469 while (val < end && HTTP_IS_SPHT(*val))
470 val++;
471 if ((val >= end) && (len + 2 <= end - hdr))
472 return len + 2; /* we may replace starting from second space */
473 return val - hdr;
474}
475
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]476/* Find the end of the header value contained between <s> and <e>. See RFC2616,
477 * par 2.2 for more information. Note that it requires a valid header to return
478 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]479 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]480char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]481{
482 int quoted, qdpair;
483
484 quoted = qdpair = 0;
485 for (; s < e; s++) {
486 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]487 else if (quoted) {
488 if (*s == '\\') qdpair = 1;
489 else if (*s == '"') quoted = 0;
490 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]491 else if (*s == '"') quoted = 1;
492 else if (*s == ',') return s;
493 }
494 return s;
495}
496
497/* Find the first or next occurrence of header <name> in message buffer <sol>
498 * using headers index <idx>, and return it in the <ctx> structure. This
499 * structure holds everything necessary to use the header and find next
500 * occurrence. If its <idx> member is 0, the header is searched from the
501 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]502 * 1 when it finds a value, and 0 when there is no more. It is designed to work
503 * with headers defined as comma-separated lists. As a special case, if ctx->val
504 * is NULL when searching for a new values of a header, the current header is
505 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]506 */
507int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]508 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]509 struct hdr_ctx *ctx)
510{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]511 char *eol, *sov;
512 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]513
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]514 cur_idx = ctx->idx;
515 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]516 /* We have previously returned a value, let's search
517 * another one on the same line.
518 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]519 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]520 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]521 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]522 eol = sol + idx->v[cur_idx].len;
523
524 if (sov >= eol)
525 /* no more values in this header */
526 goto next_hdr;
527
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]528 /* values remaining for this header, skip the comma but save it
529 * for later use (eg: for header deletion).
530 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]531 sov++;
532 while (sov < eol && http_is_lws[(unsigned char)*sov])
533 sov++;
534
535 goto return_hdr;
536 }
537
538 /* first request for this header */
539 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]540 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]541 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]542 while (cur_idx) {
543 eol = sol + idx->v[cur_idx].len;
544
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]545 if (len == 0) {
546 /* No argument was passed, we want any header.
547 * To achieve this, we simply build a fake request. */
548 while (sol + len < eol && sol[len] != ':')
549 len++;
550 name = sol;
551 }
552
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]553 if ((len < eol - sol) &&
554 (sol[len] == ':') &&
555 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]556 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]557 sov = sol + len + 1;
558 while (sov < eol && http_is_lws[(unsigned char)*sov])
559 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]560
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]561 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]562 ctx->prev = old_idx;
563 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]564 ctx->idx = cur_idx;
565 ctx->val = sov - sol;
566
567 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]568 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]569 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]570 eol--;
571 ctx->tws++;
572 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]573 ctx->vlen = eol - sov;
574 return 1;
575 }
576 next_hdr:
577 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]578 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]579 cur_idx = idx->v[cur_idx].next;
580 }
581 return 0;
582}
583
584int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]585 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]586 struct hdr_ctx *ctx)
587{
588 return http_find_header2(name, strlen(name), sol, idx, ctx);
589}
590
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]591/* Remove one value of a header. This only works on a <ctx> returned by one of
592 * the http_find_header functions. The value is removed, as well as surrounding
593 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]594 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]595 * message <msg>. The new index is returned. If it is zero, it means there is
596 * no more header, so any processing may stop. The ctx is always left in a form
597 * that can be handled by http_find_header2() to find next occurrence.
598 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]599int 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]600{
601 int cur_idx = ctx->idx;
602 char *sol = ctx->line;
603 struct hdr_idx_elem *hdr;
604 int delta, skip_comma;
605
606 if (!cur_idx)
607 return 0;
608
609 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]610 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]611 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]612 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]613 http_msg_move_end(msg, delta);
614 idx->used--;
615 hdr->len = 0; /* unused entry */
616 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]617 if (idx->tail == ctx->idx)
618 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]619 ctx->idx = ctx->prev; /* walk back to the end of previous header */
620 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
621 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]622 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]623 return ctx->idx;
624 }
625
626 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]627 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
628 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]629 */
630
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]631 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]632 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]633 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]634 NULL, 0);
635 hdr->len += delta;
636 http_msg_move_end(msg, delta);
637 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]638 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]639 return ctx->idx;
640}
641
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]642/* This function handles a server error at the stream interface level. The
643 * stream interface is assumed to be already in a closed state. An optional
644 * message is copied into the input buffer, and an HTTP status code stored.
645 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]646 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]647 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]648static void http_server_error(struct session *t, struct stream_interface *si,
649 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]650{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]651 channel_auto_read(si->ob);
652 channel_abort(si->ob);
653 channel_auto_close(si->ob);
654 channel_erase(si->ob);
655 channel_auto_close(si->ib);
656 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]657 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]658 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]659 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]660 }
661 if (!(t->flags & SN_ERR_MASK))
662 t->flags |= err;
663 if (!(t->flags & SN_FINST_MASK))
664 t->flags |= finst;
665}
666
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]667/* This function returns the appropriate error location for the given session
668 * and message.
669 */
670
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]671struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]672{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]673 if (s->be->errmsg[msgnum].str)
674 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]675 else if (s->fe->errmsg[msgnum].str)
676 return &s->fe->errmsg[msgnum];
677 else
678 return &http_err_chunks[msgnum];
679}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]680
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]681/*
682 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
683 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
684 */
685static http_meth_t find_http_meth(const char *str, const int len)
686{
687 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]688 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]689
690 m = ((unsigned)*str - 'A');
691
692 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]693 for (h = http_methods[m]; h->len > 0; h++) {
694 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]695 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]696 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]698 };
699 return HTTP_METH_OTHER;
700 }
701 return HTTP_METH_NONE;
702
703}
704
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]705/* Parse the URI from the given transaction (which is assumed to be in request
706 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
707 * It is returned otherwise.
708 */
709static char *
710http_get_path(struct http_txn *txn)
711{
712 char *ptr, *end;
713
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]714 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]715 end = ptr + txn->req.sl.rq.u_l;
716
717 if (ptr >= end)
718 return NULL;
719
720 /* RFC2616, par. 5.1.2 :
721 * Request-URI = "*" | absuri | abspath | authority
722 */
723
724 if (*ptr == '*')
725 return NULL;
726
727 if (isalpha((unsigned char)*ptr)) {
728 /* this is a scheme as described by RFC3986, par. 3.1 */
729 ptr++;
730 while (ptr < end &&
731 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
732 ptr++;
733 /* skip '://' */
734 if (ptr == end || *ptr++ != ':')
735 return NULL;
736 if (ptr == end || *ptr++ != '/')
737 return NULL;
738 if (ptr == end || *ptr++ != '/')
739 return NULL;
740 }
741 /* skip [user[:passwd]@]host[:[port]] */
742
743 while (ptr < end && *ptr != '/')
744 ptr++;
745
746 if (ptr == end)
747 return NULL;
748
749 /* OK, we got the '/' ! */
750 return ptr;
751}
752
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]753/* Returns a 302 for a redirectable request. This may only be called just after
754 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
755 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]756 * NOTE: this function is designed to support being called once data are scheduled
757 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]758 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]759void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]760{
761 struct http_txn *txn;
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;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]764 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]765
766 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]767 trash.len = strlen(HTTP_302);
768 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]769
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]770 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]771
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]772 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]773 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]774 return;
775
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]776 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]777 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]778 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
779 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]780 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]781
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]782 /* 3: add the request URI. Since it was already forwarded, we need
783 * to temporarily rewind the buffer.
784 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]785 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]786 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]787
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]788 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]789 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]790
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]791 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]792
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]793 if (!path)
794 return;
795
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]796 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]797 return;
798
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]799 memcpy(trash.str + trash.len, path, len);
800 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]801
802 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]803 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
804 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]805 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]806 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
807 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]808 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]809
810 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]811 si_shutr(si);
812 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]813 si->err_type = SI_ET_NONE;
814 si->err_loc = NULL;
815 si->state = SI_ST_CLO;
816
817 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]818 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]819
820 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]821 if (srv)
822 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]823}
824
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]825/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]826 * that the server side is closed. Note that err_type is actually a
827 * bitmask, where almost only aborts may be cumulated with other
828 * values. We consider that aborted operations are more important
829 * than timeouts or errors due to the fact that nobody else in the
830 * logs might explain incomplete retries. All others should avoid
831 * being cumulated. It should normally not be possible to have multiple
832 * aborts at once, but just in case, the first one in sequence is reported.
833 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]834void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]835{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]836 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]837
838 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]839 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]840 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]841 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]842 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]843 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]844 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]845 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]846 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]847 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]848 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]849 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]850 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]851 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]852 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]853 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]854 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]855 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]856 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]857 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]858 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]859}
860
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]861extern const char sess_term_cond[8];
862extern const char sess_fin_state[8];
863extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]864struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]865struct pool_head *pool2_capture;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]866struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]867
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]868/*
869 * Capture headers from message starting at <som> according to header list
870 * <cap_hdr>, and fill the <idx> structure appropriately.
871 */
872void capture_headers(char *som, struct hdr_idx *idx,
873 char **cap, struct cap_hdr *cap_hdr)
874{
875 char *eol, *sol, *col, *sov;
876 int cur_idx;
877 struct cap_hdr *h;
878 int len;
879
880 sol = som + hdr_idx_first_pos(idx);
881 cur_idx = hdr_idx_first_idx(idx);
882
883 while (cur_idx) {
884 eol = sol + idx->v[cur_idx].len;
885
886 col = sol;
887 while (col < eol && *col != ':')
888 col++;
889
890 sov = col + 1;
891 while (sov < eol && http_is_lws[(unsigned char)*sov])
892 sov++;
893
894 for (h = cap_hdr; h; h = h->next) {
895 if ((h->namelen == col - sol) &&
896 (strncasecmp(sol, h->name, h->namelen) == 0)) {
897 if (cap[h->index] == NULL)
898 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]899 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]900
901 if (cap[h->index] == NULL) {
902 Alert("HTTP capture : out of memory.\n");
903 continue;
904 }
905
906 len = eol - sov;
907 if (len > h->len)
908 len = h->len;
909
910 memcpy(cap[h->index], sov, len);
911 cap[h->index][len]=0;
912 }
913 }
914 sol = eol + idx->v[cur_idx].cr + 1;
915 cur_idx = idx->v[cur_idx].next;
916 }
917}
918
919
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]920/* either we find an LF at <ptr> or we jump to <bad>.
921 */
922#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
923
924/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
925 * otherwise to <http_msg_ood> with <state> set to <st>.
926 */
927#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
928 ptr++; \
929 if (likely(ptr < end)) \
930 goto good; \
931 else { \
932 state = (st); \
933 goto http_msg_ood; \
934 } \
935 } while (0)
936
937
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]938/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]939 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]940 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
941 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
942 * will give undefined results.
943 * Note that it is upon the caller's responsibility to ensure that ptr < end,
944 * and that msg->sol points to the beginning of the response.
945 * If a complete line is found (which implies that at least one CR or LF is
946 * found before <end>, the updated <ptr> is returned, otherwise NULL is
947 * returned indicating an incomplete line (which does not mean that parts have
948 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
949 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
950 * upon next call.
951 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]952 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]953 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
954 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]955 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]956 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]957const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]958 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]959 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]960{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]961 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]962
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]963 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]964 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]965 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]966 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]967 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
968
969 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]970 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
972 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]973 state = HTTP_MSG_ERROR;
974 break;
975
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]976 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]977 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]978 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]979 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]980 goto http_msg_rpcode;
981 }
982 if (likely(HTTP_IS_SPHT(*ptr)))
983 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
984 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]985 state = HTTP_MSG_ERROR;
986 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]987
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]988 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]989 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]990 if (likely(!HTTP_IS_LWS(*ptr)))
991 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
992
993 if (likely(HTTP_IS_SPHT(*ptr))) {
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 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
996 }
997
998 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]999 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1000 http_msg_rsp_reason:
1001 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1002 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1003 msg->sl.st.r_l = 0;
1004 goto http_msg_rpline_eol;
1005
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1006 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1007 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1008 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1009 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1010 goto http_msg_rpreason;
1011 }
1012 if (likely(HTTP_IS_SPHT(*ptr)))
1013 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1014 /* so it's a CR/LF, so there is no reason phrase */
1015 goto http_msg_rsp_reason;
1016
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1017 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1018 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1019 if (likely(!HTTP_IS_CRLF(*ptr)))
1020 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1021 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1022 http_msg_rpline_eol:
1023 /* We have seen the end of line. Note that we do not
1024 * necessarily have the \n yet, but at least we know that we
1025 * have EITHER \r OR \n, otherwise the response would not be
1026 * complete. We can then record the response length and return
1027 * to the caller which will be able to register it.
1028 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1029 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1030 return ptr;
1031
1032#ifdef DEBUG_FULL
1033 default:
1034 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1035 exit(1);
1036#endif
1037 }
1038
1039 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1040 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1041 if (ret_state)
1042 *ret_state = state;
1043 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1044 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1046}
1047
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1048/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1049 * This function parses a request line between <ptr> and <end>, starting with
1050 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1051 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1052 * will give undefined results.
1053 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1054 * and that msg->sol points to the beginning of the request.
1055 * If a complete line is found (which implies that at least one CR or LF is
1056 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1057 * returned indicating an incomplete line (which does not mean that parts have
1058 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1059 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1060 * upon next call.
1061 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1062 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1063 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1064 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1065 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1066 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1067const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1068 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1069 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1070{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1071 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1072
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1074 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1075 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1076 if (likely(HTTP_IS_TOKEN(*ptr)))
1077 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
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_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1080 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1081 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1082 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1083
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1084 if (likely(HTTP_IS_CRLF(*ptr))) {
1085 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1086 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1087 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1088 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1089 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1090 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1091 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 msg->sl.rq.v_l = 0;
1094 goto http_msg_rqline_eol;
1095 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1096 state = HTTP_MSG_ERROR;
1097 break;
1098
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1099 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1100 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1102 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1103 goto http_msg_rquri;
1104 }
1105 if (likely(HTTP_IS_SPHT(*ptr)))
1106 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1107 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1108 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1109
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1110 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1111 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1112 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1113 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1114
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1115 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1116 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1118 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1119
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1120 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1121 /* non-ASCII chars are forbidden unless option
1122 * accept-invalid-http-request is enabled in the frontend.
1123 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1124 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1125 if (msg->err_pos < -1)
1126 goto invalid_char;
1127 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1128 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1129 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1130 }
1131
1132 if (likely(HTTP_IS_CRLF(*ptr))) {
1133 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1134 goto http_msg_req09_uri_e;
1135 }
1136
1137 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1138 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1139 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1140 state = HTTP_MSG_ERROR;
1141 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1142
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1143 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1144 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1145 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1146 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1147 goto http_msg_rqver;
1148 }
1149 if (likely(HTTP_IS_SPHT(*ptr)))
1150 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1151 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1152 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1153
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1154 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1155 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1156 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1157 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1158
1159 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1160 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1161 http_msg_rqline_eol:
1162 /* We have seen the end of line. Note that we do not
1163 * necessarily have the \n yet, but at least we know that we
1164 * have EITHER \r OR \n, otherwise the request would not be
1165 * complete. We can then record the request length and return
1166 * to the caller which will be able to register it.
1167 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1168 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1169 return ptr;
1170 }
1171
1172 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1173 state = HTTP_MSG_ERROR;
1174 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1175
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1176#ifdef DEBUG_FULL
1177 default:
1178 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1179 exit(1);
1180#endif
1181 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1182
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1183 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1184 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1185 if (ret_state)
1186 *ret_state = state;
1187 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1188 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1190}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1191
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1192/*
1193 * Returns the data from Authorization header. Function may be called more
1194 * than once so data is stored in txn->auth_data. When no header is found
1195 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1196 * searching again for something we are unable to find anyway.
1197 */
1198
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1199char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1200
1201int
1202get_http_auth(struct session *s)
1203{
1204
1205 struct http_txn *txn = &s->txn;
1206 struct chunk auth_method;
1207 struct hdr_ctx ctx;
1208 char *h, *p;
1209 int len;
1210
1211#ifdef DEBUG_AUTH
1212 printf("Auth for session %p: %d\n", s, txn->auth.method);
1213#endif
1214
1215 if (txn->auth.method == HTTP_AUTH_WRONG)
1216 return 0;
1217
1218 if (txn->auth.method)
1219 return 1;
1220
1221 txn->auth.method = HTTP_AUTH_WRONG;
1222
1223 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1224
1225 if (txn->flags & TX_USE_PX_CONN) {
1226 h = "Proxy-Authorization";
1227 len = strlen(h);
1228 } else {
1229 h = "Authorization";
1230 len = strlen(h);
1231 }
1232
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1233 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1234 return 0;
1235
1236 h = ctx.line + ctx.val;
1237
1238 p = memchr(h, ' ', ctx.vlen);
1239 if (!p || p == h)
1240 return 0;
1241
1242 chunk_initlen(&auth_method, h, 0, p-h);
1243 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1244
1245 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1246
1247 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1248 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1249
1250 if (len < 0)
1251 return 0;
1252
1253
1254 get_http_auth_buff[len] = '\0';
1255
1256 p = strchr(get_http_auth_buff, ':');
1257
1258 if (!p)
1259 return 0;
1260
1261 txn->auth.user = get_http_auth_buff;
1262 *p = '\0';
1263 txn->auth.pass = p+1;
1264
1265 txn->auth.method = HTTP_AUTH_BASIC;
1266 return 1;
1267 }
1268
1269 return 0;
1270}
1271
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1272
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1273/*
1274 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1275 * depending on the initial msg->msg_state. The caller is responsible for
1276 * ensuring that the message does not wrap. The function can be preempted
1277 * everywhere when data are missing and recalled at the exact same location
1278 * with no information loss. The message may even be realigned between two
1279 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1280 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1281 * fields. Note that msg->sol will be initialized after completing the first
1282 * state, so that none of the msg pointers has to be initialized prior to the
1283 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1284 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1285void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1286{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1287 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1288 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1289 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1290
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1291 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1292 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1293 ptr = buf->p + msg->next;
1294 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1295
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1296 if (unlikely(ptr >= end))
1297 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1298
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1299 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1300 /*
1301 * First, states that are specific to the response only.
1302 * We check them first so that request and headers are
1303 * closer to each other (accessed more often).
1304 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1306 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1307 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1308 /* we have a start of message, but we have to check
1309 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1310 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1311 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1312 if (unlikely(ptr != buf->p)) {
1313 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1314 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1315 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1316 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1317 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1318 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1319 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1320 hdr_idx_init(idx);
1321 state = HTTP_MSG_RPVER;
1322 goto http_msg_rpver;
1323 }
1324
1325 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1326 goto http_msg_invalid;
1327
1328 if (unlikely(*ptr == '\n'))
1329 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1330 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1331 /* stop here */
1332
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1333 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1334 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 EXPECT_LF_HERE(ptr, http_msg_invalid);
1336 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1337 /* stop here */
1338
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1339 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1340 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1341 case HTTP_MSG_RPVER_SP:
1342 case HTTP_MSG_RPCODE:
1343 case HTTP_MSG_RPCODE_SP:
1344 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1345 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1346 state, ptr, end,
1347 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1348 if (unlikely(!ptr))
1349 return;
1350
1351 /* we have a full response and we know that we have either a CR
1352 * or an LF at <ptr>.
1353 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1354 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1355
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1356 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1357 if (likely(*ptr == '\r'))
1358 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1359 goto http_msg_rpline_end;
1360
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1361 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1362 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1363 /* msg->sol must point to the first of CR or LF. */
1364 EXPECT_LF_HERE(ptr, http_msg_invalid);
1365 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1366 /* stop here */
1367
1368 /*
1369 * Second, states that are specific to the request only
1370 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1371 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1372 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1373 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1374 /* we have a start of message, but we have to check
1375 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1376 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1377 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1378 if (likely(ptr != buf->p)) {
1379 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1380 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1381 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1382 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1383 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1384 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1385 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1386 state = HTTP_MSG_RQMETH;
1387 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1388 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1389
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1390 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1391 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1392
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 if (unlikely(*ptr == '\n'))
1394 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1395 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1396 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1397
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1398 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1399 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1400 EXPECT_LF_HERE(ptr, http_msg_invalid);
1401 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1402 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1403
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1405 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1406 case HTTP_MSG_RQMETH_SP:
1407 case HTTP_MSG_RQURI:
1408 case HTTP_MSG_RQURI_SP:
1409 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1410 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1411 state, ptr, end,
1412 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1413 if (unlikely(!ptr))
1414 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1416 /* we have a full request and we know that we have either a CR
1417 * or an LF at <ptr>.
1418 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1420
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1421 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 if (likely(*ptr == '\r'))
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1424 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1425
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1426 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1427 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1428 /* check for HTTP/0.9 request : no version information available.
1429 * msg->sol must point to the first of CR or LF.
1430 */
1431 if (unlikely(msg->sl.rq.v_l == 0))
1432 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1433
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 EXPECT_LF_HERE(ptr, http_msg_invalid);
1435 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1437
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1438 /*
1439 * Common states below
1440 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1441 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1442 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1443 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1444 if (likely(!HTTP_IS_CRLF(*ptr))) {
1445 goto http_msg_hdr_name;
1446 }
1447
1448 if (likely(*ptr == '\r'))
1449 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1450 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1451
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1452 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1453 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 /* assumes msg->sol points to the first char */
1455 if (likely(HTTP_IS_TOKEN(*ptr)))
1456 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1457
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1458 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1459 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]1460
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1461 if (likely(msg->err_pos < -1) || *ptr == '\n')
1462 goto http_msg_invalid;
1463
1464 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1465 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1466
1467 /* and we still accept this non-token character */
1468 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1469
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1470 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1471 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1472 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 if (likely(HTTP_IS_SPHT(*ptr)))
1474 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]1475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1477 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1478
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1479 if (likely(!HTTP_IS_CRLF(*ptr))) {
1480 goto http_msg_hdr_val;
1481 }
1482
1483 if (likely(*ptr == '\r'))
1484 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1485 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1488 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 EXPECT_LF_HERE(ptr, http_msg_invalid);
1490 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]1491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1493 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1494 if (likely(HTTP_IS_SPHT(*ptr))) {
1495 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1496 for (; buf->p + msg->sov < ptr; msg->sov++)
1497 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 goto http_msg_hdr_l1_sp;
1499 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1500 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1501 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 goto http_msg_complete_header;
1503
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1504 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1505 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1506 /* assumes msg->sol points to the first char, and msg->sov
1507 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 */
1509 if (likely(!HTTP_IS_CRLF(*ptr)))
1510 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1511
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1512 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 /* Note: we could also copy eol into ->eoh so that we have the
1514 * real header end in case it ends with lots of LWS, but is this
1515 * really needed ?
1516 */
1517 if (likely(*ptr == '\r'))
1518 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1519 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1520
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1522 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 EXPECT_LF_HERE(ptr, http_msg_invalid);
1524 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]1525
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1526 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1527 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1529 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1530 for (; buf->p + msg->eol < ptr; msg->eol++)
1531 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 goto http_msg_hdr_val;
1533 }
1534 http_msg_complete_header:
1535 /*
1536 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1537 * Assumes msg->sol points to the first char, msg->sov points
1538 * to the first character of the value and msg->eol to the
1539 * first CR or LF so we know how the line ends. We insert last
1540 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1542 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1543 idx, idx->tail) < 0))
1544 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1545
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1546 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 if (likely(!HTTP_IS_CRLF(*ptr))) {
1548 goto http_msg_hdr_name;
1549 }
1550
1551 if (likely(*ptr == '\r'))
1552 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1553 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1554
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1555 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1556 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1557 /* Assumes msg->sol points to the first of either CR or LF */
1558 EXPECT_LF_HERE(ptr, http_msg_invalid);
1559 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1560 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1561 msg->eoh = msg->sol;
1562 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1563 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1565
1566 case HTTP_MSG_ERROR:
1567 /* this may only happen if we call http_msg_analyser() twice with an error */
1568 break;
1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570#ifdef DEBUG_FULL
1571 default:
1572 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1573 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1574#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575 }
1576 http_msg_ood:
1577 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1578 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1579 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1580 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1581
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1582 http_msg_invalid:
1583 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1584 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1585 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 return;
1587}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1588
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1589/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1590 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1591 * nothing is done and 1 is returned.
1592 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1593static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1594{
1595 int delta;
1596 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1597 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1598
1599 if (msg->sl.rq.v_l != 0)
1600 return 1;
1601
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1602 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1603 delta = 0;
1604
1605 if (msg->sl.rq.u_l == 0) {
1606 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1607 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1608 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1609 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1610 }
1611 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1612 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1613 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1614 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1615 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1616 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1617 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1618 NULL, NULL);
1619 if (unlikely(!cur_end))
1620 return 0;
1621
1622 /* we have a full HTTP/1.0 request now and we know that
1623 * we have either a CR or an LF at <ptr>.
1624 */
1625 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1626 return 1;
1627}
1628
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1629/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1630 * and "keep-alive" values. If we already know that some headers may safely
1631 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1632 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1633 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1634 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1635 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1636 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1637 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1638 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1639 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1640void 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]1641{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1642 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1643 const char *hdr_val = "Connection";
1644 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1645
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1646 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1647 return;
1648
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1649 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1650 hdr_val = "Proxy-Connection";
1651 hdr_len = 16;
1652 }
1653
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1654 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1655 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1656 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1657 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1658 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1659 if (to_del & 2)
1660 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1661 else
1662 txn->flags |= TX_CON_KAL_SET;
1663 }
1664 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1665 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1666 if (to_del & 1)
1667 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1668 else
1669 txn->flags |= TX_CON_CLO_SET;
1670 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1671 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1672 txn->flags |= TX_HDR_CONN_UPG;
1673 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1674 }
1675
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1676 txn->flags |= TX_HDR_CONN_PRS;
1677 return;
1678}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1679
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1680/* Apply desired changes on the Connection: header. Values may be removed and/or
1681 * added depending on the <wanted> flags, which are exclusively composed of
1682 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1683 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1684 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1685void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1686{
1687 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1688 const char *hdr_val = "Connection";
1689 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1690
1691 ctx.idx = 0;
1692
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1693
1694 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1695 hdr_val = "Proxy-Connection";
1696 hdr_len = 16;
1697 }
1698
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1699 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1700 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1701 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1702 if (wanted & TX_CON_KAL_SET)
1703 txn->flags |= TX_CON_KAL_SET;
1704 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1705 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1706 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1707 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1708 if (wanted & TX_CON_CLO_SET)
1709 txn->flags |= TX_CON_CLO_SET;
1710 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1711 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1712 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1713 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1714
1715 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1716 return;
1717
1718 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1719 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1720 hdr_val = "Connection: close";
1721 hdr_len = 17;
1722 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1723 hdr_val = "Proxy-Connection: close";
1724 hdr_len = 23;
1725 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1726 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1727 }
1728
1729 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1730 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1731 hdr_val = "Connection: keep-alive";
1732 hdr_len = 22;
1733 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1734 hdr_val = "Proxy-Connection: keep-alive";
1735 hdr_len = 28;
1736 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1737 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 }
1739 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1740}
1741
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1742/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1743 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1744 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1745 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1746 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1747 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1748static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1749{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1750 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1751 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1752 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1753 const char *end = buf->data + buf->size;
1754 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1755 unsigned int chunk = 0;
1756
1757 /* The chunk size is in the following form, though we are only
1758 * interested in the size and CRLF :
1759 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1760 */
1761 while (1) {
1762 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1763 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1764 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1765 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1766 if (c < 0) /* not a hex digit anymore */
1767 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1768 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1769 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1770 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1771 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1772 chunk = (chunk << 4) + c;
1773 }
1774
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1775 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1776 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1777 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1778
1779 while (http_is_spht[(unsigned char)*ptr]) {
1780 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1781 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1782 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1784 }
1785
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1786 /* Up to there, we know that at least one byte is present at *ptr. Check
1787 * for the end of chunk size.
1788 */
1789 while (1) {
1790 if (likely(HTTP_IS_CRLF(*ptr))) {
1791 /* we now have a CR or an LF at ptr */
1792 if (likely(*ptr == '\r')) {
1793 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1794 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1795 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1796 return 0;
1797 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1798
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1799 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1800 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1801 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1802 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1803 /* done */
1804 break;
1805 }
1806 else if (*ptr == ';') {
1807 /* chunk extension, ends at next CRLF */
1808 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1809 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1810 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1811 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1812
1813 while (!HTTP_IS_CRLF(*ptr)) {
1814 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1815 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1816 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1817 return 0;
1818 }
1819 /* we have a CRLF now, loop above */
1820 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1821 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1822 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1823 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1824 }
1825
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1827 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1828 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1829 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1830 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1831 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1832 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1833 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1834 msg->chunk_len = chunk;
1835 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1836 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1837 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1838 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1839 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1840 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1841}
1842
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1843/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1844 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1845 * the trailers is found, it is automatically scheduled to be forwarded,
1846 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1847 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1848 * 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]1849 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1850 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1851 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1852 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1853 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1854 * matches the length of trailers already parsed and not forwarded. It is also
1855 * important to note that this function is designed to be able to parse wrapped
1856 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1857 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1858static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1859{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1860 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1861
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1862 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1863 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1864 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1865 const char *ptr = b_ptr(buf, msg->next);
1866 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1867 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1868
1869 /* scan current line and stop at LF or CRLF */
1870 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1871 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1872 return 0;
1873
1874 if (*ptr == '\n') {
1875 if (!p1)
1876 p1 = ptr;
1877 p2 = ptr;
1878 break;
1879 }
1880
1881 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1882 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1883 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1885 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1886 p1 = ptr;
1887 }
1888
1889 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1890 if (ptr >= buf->data + buf->size)
1891 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1892 }
1893
1894 /* after LF; point to beginning of next line */
1895 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1896 if (p2 >= buf->data + buf->size)
1897 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1898
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1899 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1900 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1901 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1902
1903 /* schedule this line for forwarding */
1904 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1905 if (msg->sov >= buf->size)
1906 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1907
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1908 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1909 /* LF/CRLF at beginning of line => end of trailers at p2.
1910 * Everything was scheduled for forwarding, there's nothing
1911 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1912 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1913 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1914 msg->msg_state = HTTP_MSG_DONE;
1915 return 1;
1916 }
1917 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1918 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1919 }
1920}
1921
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1922/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1923 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1924 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1925 * 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]1926 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1927 * not enough data are available, the function does not change anything and
1928 * returns zero. If a parse error is encountered, the function returns < 0 and
1929 * does not change anything. Note: this function is designed to parse wrapped
1930 * CRLF at the end of the buffer.
1931 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1932static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1933{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1934 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1935 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1936 int bytes;
1937
1938 /* NB: we'll check data availabilty at the end. It's not a
1939 * problem because whatever we match first will be checked
1940 * against the correct length.
1941 */
1942 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1943 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1944 if (*ptr == '\r') {
1945 bytes++;
1946 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1947 if (ptr >= buf->data + buf->size)
1948 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1949 }
1950
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1951 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1952 return 0;
1953
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1954 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1955 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1956 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1957 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1958
1959 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1960 if (ptr >= buf->data + buf->size)
1961 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1962 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1963 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1964 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1965 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1966 return 1;
1967}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1968
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1969
1970/*
1971 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1972 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1973int select_compression_request_header(struct session *s, struct buffer *req)
1974{
1975 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1976 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1977 struct hdr_ctx ctx;
1978 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1979 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1980
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1981 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1982 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1983 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1984 */
1985 ctx.idx = 0;
1986 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1987 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1988 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
1989 (ctx.vlen < 31 ||
1990 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
1991 ctx.line[ctx.val + 30] < '6' ||
1992 (ctx.line[ctx.val + 30] == '6' &&
1993 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
1994 s->comp_algo = NULL;
1995 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1996 }
1997
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1998 ctx.idx = 0;
1999 /* no compression when Cache-Control: no-transform found */
2000 while (http_find_header2("Cache-Control", 13, req->p, &txn->hdr_idx, &ctx)) {
2001 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12)) {
2002 s->comp_algo = NULL;
2003 return 0;
2004 }
2005 }
2006
2007 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2008 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2009 ctx.idx = 0;
2010 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2011 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2012 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2013 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2014
2015 /* remove all occurrences of the header when "compression offload" is set */
2016
2017 if ((s->be->comp && s->be->comp->offload) ||
2018 (s->fe->comp && s->fe->comp->offload)) {
2019 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2020 ctx.idx = 0;
2021 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2022 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2023 }
2024 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2025 return 1;
2026 }
2027 }
2028 }
2029 }
2030
2031 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2032 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2033 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2034 if (comp_algo->add_data == identity_add_data) {
2035 s->comp_algo = comp_algo;
2036 return 1;
2037 }
2038 }
2039 }
2040
2041 s->comp_algo = NULL;
2042
2043 return 0;
2044}
2045
2046/*
2047 * Selects a comression algorithm depending of the server response.
2048 */
2049int select_compression_response_header(struct session *s, struct buffer *res)
2050{
2051 struct http_txn *txn = &s->txn;
2052 struct http_msg *msg = &txn->rsp;
2053 struct hdr_ctx ctx;
2054 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2055
2056 /* no common compression algorithm was found in request header */
2057 if (s->comp_algo == NULL)
2058 goto fail;
2059
2060 /* HTTP < 1.1 should not be compressed */
2061 if (!(msg->flags & HTTP_MSGF_VER_11))
2062 goto fail;
2063
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2064 ctx.idx = 0;
2065
2066 /* Content-Length is null */
2067 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2068 goto fail;
2069
2070 /* content is already compressed */
2071 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2072 goto fail;
2073
2074 comp_type = NULL;
2075
2076 /* if there was a compression content-type option in the backend or the frontend
2077 * The backend have priority.
2078 */
2079 if ((s->be->comp && (comp_type = s->be->comp->types)) || (s->fe->comp && (comp_type = s->fe->comp->types))) {
2080 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2081 for (; comp_type; comp_type = comp_type->next) {
2082 if (strncmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
2083 /* this Content-Type should be compressed */
2084 break;
2085 }
William Lallemandc04ca582012-11-12 13:56:25 +0100[diff] [blame]2086 } else {
2087 /* there is no Content-Type header */
2088 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2089 }
2090 /* this Content-Type should not be compressed */
2091 if (comp_type == NULL)
2092 goto fail;
2093 }
2094
2095 ctx.idx = 0;
2096
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2097 /* limit compression rate */
2098 if (global.comp_rate_lim > 0)
2099 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2100 goto fail;
2101
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2102 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2103 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2104 goto fail;
2105
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2106 s->flags |= SN_COMP_READY;
2107
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2108 s->comp_ctx.cur_lvl = global.tune.comp_maxlevel;
2109
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2110 /* remove Content-Length header */
2111 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2112 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2113
2114 /* add Transfer-Encoding header */
2115 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2116 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2117
2118 /*
2119 * Add Content-Encoding header when it's not identity encoding.
2120 * RFC 2616 : Identity encoding: This content-coding is used only in the
2121 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2122 * header.
2123 */
2124 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2125 trash.len = 18;
2126 memcpy(trash.str, "Content-Encoding: ", trash.len);
2127 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2128 trash.len += s->comp_algo->name_len;
2129 trash.str[trash.len] = '\0';
2130 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2131 }
2132
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2133 return 1;
2134
2135fail:
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2136 if (s->flags & SN_COMP_READY) {
William Lallemand1c2d6222012-10-30 15:52:53 +0100[diff] [blame]2137 s->comp_algo->end(&s->comp_ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2138 s->comp_algo = NULL;
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2139 s->flags &= ~SN_COMP_READY;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2140 }
2141 return 0;
2142}
2143
2144
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2145/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2146 * processing can continue on next analysers, or zero if it either needs more
2147 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2148 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2149 * when it has nothing left to do, and may remove any analyser when it wants to
2150 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2151 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2152int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2153{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2154 /*
2155 * We will parse the partial (or complete) lines.
2156 * We will check the request syntax, and also join multi-line
2157 * headers. An index of all the lines will be elaborated while
2158 * parsing.
2159 *
2160 * For the parsing, we use a 28 states FSM.
2161 *
2162 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2163 * req->buf->p = beginning of request
2164 * req->buf->p + msg->eoh = end of processed headers / start of current one
2165 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2166 * msg->eol = end of current header or line (LF or CRLF)
2167 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2168 *
2169 * At end of parsing, we may perform a capture of the error (if any), and
2170 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2171 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2172 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2173 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2174
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2175 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2176 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2177 struct http_txn *txn = &s->txn;
2178 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2179 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2180
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2181 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]2182 now_ms, __FUNCTION__,
2183 s,
2184 req,
2185 req->rex, req->wex,
2186 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2187 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2188 req->analysers);
2189
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2190 /* we're speaking HTTP here, so let's speak HTTP to the client */
2191 s->srv_error = http_return_srv_error;
2192
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2193 /* There's a protected area at the end of the buffer for rewriting
2194 * purposes. We don't want to start to parse the request if the
2195 * protected area is affected, because we may have to move processed
2196 * data later, which is much more complicated.
2197 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2198 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2199 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2200 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2201 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2202 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2203 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2204 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2205 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2206 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2207 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2208 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2209 return 0;
2210 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2211 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2212 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2213 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2214 }
2215
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2216 /* Note that we have the same problem with the response ; we
2217 * may want to send a redirect, error or anything which requires
2218 * some spare space. So we'll ensure that we have at least
2219 * maxrewrite bytes available in the response buffer before
2220 * processing that one. This will only affect pipelined
2221 * keep-alive requests.
2222 */
2223 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2224 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2225 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2226 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2227 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2228 if (s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2229 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2230 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2231 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2232 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2233 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2234 return 0;
2235 }
2236 }
2237
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2238 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2239 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2240 }
2241
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2242 /* 1: we might have to print this header in debug mode */
2243 if (unlikely((global.mode & MODE_DEBUG) &&
2244 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2245 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2246 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2247
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2248 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2249 /* this is a bit complex : in case of error on the request line,
2250 * we know that rq.l is still zero, so we display only the part
2251 * up to the end of the line (truncated by debug_hdr).
2252 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2253 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2254 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2255
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2256 sol += hdr_idx_first_pos(&txn->hdr_idx);
2257 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2258
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2259 while (cur_idx) {
2260 eol = sol + txn->hdr_idx.v[cur_idx].len;
2261 debug_hdr("clihdr", s, sol, eol);
2262 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2263 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2264 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 }
2266
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2267
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2268 /*
2269 * Now we quickly check if we have found a full valid request.
2270 * If not so, we check the FD and buffer states before leaving.
2271 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2272 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2273 * requests are checked first. When waiting for a second request
2274 * on a keep-alive session, if we encounter and error, close, t/o,
2275 * we note the error in the session flags but don't set any state.
2276 * Since the error will be noted there, it will not be counted by
2277 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2278 * Last, we may increase some tracked counters' http request errors on
2279 * the cases that are deliberately the client's fault. For instance,
2280 * a timeout or connection reset is not counted as an error. However
2281 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2282 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2283
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2284 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2285 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2286 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2287 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2288 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2289 session_inc_http_req_ctr(s);
2290 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2291 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2292 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2293 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2294
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2295 /* 1: Since we are in header mode, if there's no space
2296 * left for headers, we won't be able to free more
2297 * later, so the session will never terminate. We
2298 * must terminate it now.
2299 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2300 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2301 /* FIXME: check if URI is set and return Status
2302 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2303 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2304 session_inc_http_req_ctr(s);
2305 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2306 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2307 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2308 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2309 goto return_bad_req;
2310 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2311
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2312 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2313 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2314 if (!(s->flags & SN_ERR_MASK))
2315 s->flags |= SN_ERR_CLICL;
2316
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2317 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2318 goto failed_keep_alive;
2319
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2321 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2322 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]2323 session_inc_http_err_ctr(s);
2324 }
2325
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2326 msg->msg_state = HTTP_MSG_ERROR;
2327 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2328
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2329 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2330 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2331 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2332 if (s->listener->counters)
2333 s->listener->counters->failed_req++;
2334
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2335 if (!(s->flags & SN_FINST_MASK))
2336 s->flags |= SN_FINST_R;
2337 return 0;
2338 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2339
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2340 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2341 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2342 if (!(s->flags & SN_ERR_MASK))
2343 s->flags |= SN_ERR_CLITO;
2344
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2345 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2346 goto failed_keep_alive;
2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2349 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2350 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]2351 session_inc_http_err_ctr(s);
2352 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2354 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2355 msg->msg_state = HTTP_MSG_ERROR;
2356 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2357
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2358 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2359 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2360 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2361 if (s->listener->counters)
2362 s->listener->counters->failed_req++;
2363
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2364 if (!(s->flags & SN_FINST_MASK))
2365 s->flags |= SN_FINST_R;
2366 return 0;
2367 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2368
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2369 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2370 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2371 if (!(s->flags & SN_ERR_MASK))
2372 s->flags |= SN_ERR_CLICL;
2373
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2374 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2375 goto failed_keep_alive;
2376
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2377 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2378 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]2379 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2380 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2381 msg->msg_state = HTTP_MSG_ERROR;
2382 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2383
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2384 session_inc_http_err_ctr(s);
2385 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2386 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2387 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2388 if (s->listener->counters)
2389 s->listener->counters->failed_req++;
2390
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2391 if (!(s->flags & SN_FINST_MASK))
2392 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2393 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2394 }
2395
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2396 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2397 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2398 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2399#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2400 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2401 /* We need more data, we have to re-enable quick-ack in case we
2402 * previously disabled it, otherwise we might cause the client
2403 * to delay next data.
2404 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2405 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2406 }
2407#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2408
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2409 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2410 /* If the client starts to talk, let's fall back to
2411 * request timeout processing.
2412 */
2413 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2414 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2415 }
2416
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2417 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2418 if (!tick_isset(req->analyse_exp)) {
2419 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2420 (txn->flags & TX_WAIT_NEXT_RQ) &&
2421 tick_isset(s->be->timeout.httpka))
2422 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2423 else
2424 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2425 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2426
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2427 /* we're not ready yet */
2428 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2429
2430 failed_keep_alive:
2431 /* Here we process low-level errors for keep-alive requests. In
2432 * short, if the request is not the first one and it experiences
2433 * a timeout, read error or shutdown, we just silently close so
2434 * that the client can try again.
2435 */
2436 txn->status = 0;
2437 msg->msg_state = HTTP_MSG_RQBEFORE;
2438 req->analysers = 0;
2439 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2440 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2441 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2442 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2443 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2444
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2445 /* OK now we have a complete HTTP request with indexed headers. Let's
2446 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2447 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2448 * 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]2449 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2450 * byte after the last LF. msg->sov points to the first byte of data.
2451 * msg->eol cannot be trusted because it may have been left uninitialized
2452 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2453 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2454
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2455 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2456 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2457
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2458 if (txn->flags & TX_WAIT_NEXT_RQ) {
2459 /* kill the pending keep-alive timeout */
2460 txn->flags &= ~TX_WAIT_NEXT_RQ;
2461 req->analyse_exp = TICK_ETERNITY;
2462 }
2463
2464
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2465 /* Maybe we found in invalid header name while we were configured not
2466 * to block on that, so we have to capture it now.
2467 */
2468 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2469 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2470
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2471 /*
2472 * 1: identify the method
2473 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2474 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2475
2476 /* we can make use of server redirect on GET and HEAD */
2477 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2478 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2479
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2480 /*
2481 * 2: check if the URI matches the monitor_uri.
2482 * We have to do this for every request which gets in, because
2483 * the monitor-uri is defined by the frontend.
2484 */
2485 if (unlikely((s->fe->monitor_uri_len != 0) &&
2486 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2487 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2488 s->fe->monitor_uri,
2489 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2490 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2491 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2492 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2493 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2494
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2495 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2496 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2497
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2498 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2499 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2500 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]2501
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2502 ret = acl_pass(ret);
2503 if (cond->pol == ACL_COND_UNLESS)
2504 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2505
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2506 if (ret) {
2507 /* we fail this request, let's return 503 service unavail */
2508 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2509 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2510 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2511 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2512 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2514 /* nothing to fail, let's reply normaly */
2515 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2516 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2517 goto return_prx_cond;
2518 }
2519
2520 /*
2521 * 3: Maybe we have to copy the original REQURI for the logs ?
2522 * Note: we cannot log anymore if the request has been
2523 * classified as invalid.
2524 */
2525 if (unlikely(s->logs.logwait & LW_REQ)) {
2526 /* we have a complete HTTP request that we must log */
2527 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2528 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2529
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2530 if (urilen >= REQURI_LEN)
2531 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2532 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2533 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2534
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 if (!(s->logs.logwait &= ~LW_REQ))
2536 s->do_log(s);
2537 } else {
2538 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2539 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2540 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2541
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2542 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2543 s->unique_id = pool_alloc2(pool2_uniqueid);
2544 }
2545
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2547 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2548 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2549
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2550 /* ... and check if the request is HTTP/1.1 or above */
2551 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2552 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2553 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2554 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2555 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2556
2557 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2558 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2559
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2560 /* if the frontend has "option http-use-proxy-header", we'll check if
2561 * we have what looks like a proxied connection instead of a connection,
2562 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2563 * Note that this is *not* RFC-compliant, however browsers and proxies
2564 * happen to do that despite being non-standard :-(
2565 * We consider that a request not beginning with either '/' or '*' is
2566 * a proxied connection, which covers both "scheme://location" and
2567 * CONNECT ip:port.
2568 */
2569 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2570 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2571 txn->flags |= TX_USE_PX_CONN;
2572
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2573 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2574 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2575
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2576 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2577 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2578 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2579 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2580
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2581 /* 6: determine the transfer-length.
2582 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2583 * the presence of a message-body in a REQUEST and its transfer length
2584 * must be determined that way (in order of precedence) :
2585 * 1. The presence of a message-body in a request is signaled by the
2586 * inclusion of a Content-Length or Transfer-Encoding header field
2587 * in the request's header fields. When a request message contains
2588 * both a message-body of non-zero length and a method that does
2589 * not define any semantics for that request message-body, then an
2590 * origin server SHOULD either ignore the message-body or respond
2591 * with an appropriate error message (e.g., 413). A proxy or
2592 * gateway, when presented the same request, SHOULD either forward
2593 * the request inbound with the message- body or ignore the
2594 * message-body when determining a response.
2595 *
2596 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2597 * and the "chunked" transfer-coding (Section 6.2) is used, the
2598 * transfer-length is defined by the use of this transfer-coding.
2599 * If a Transfer-Encoding header field is present and the "chunked"
2600 * transfer-coding is not present, the transfer-length is defined
2601 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2602 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2603 * 3. If a Content-Length header field is present, its decimal value in
2604 * OCTETs represents both the entity-length and the transfer-length.
2605 * If a message is received with both a Transfer-Encoding header
2606 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2607 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2608 * 4. By the server closing the connection. (Closing the connection
2609 * cannot be used to indicate the end of a request body, since that
2610 * would leave no possibility for the server to send back a response.)
2611 *
2612 * Whenever a transfer-coding is applied to a message-body, the set of
2613 * transfer-codings MUST include "chunked", unless the message indicates
2614 * it is terminated by closing the connection. When the "chunked"
2615 * transfer-coding is used, it MUST be the last transfer-coding applied
2616 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2617 */
2618
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2619 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2620 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2621 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2622 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2623 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2624 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2625 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2626 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2627 /* bad transfer-encoding (chunked followed by something else) */
2628 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2629 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2630 break;
2631 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2632 }
2633
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2634 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2635 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2636 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2637 signed long long cl;
2638
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2639 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2640 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2641 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2642 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2643
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2644 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2645 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2646 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2647 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2648
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2649 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2650 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2651 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2652 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2653
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2654 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2655 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2656 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2657 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2658
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2659 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2660 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2661 }
2662
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2663 /* bodyless requests have a known length */
2664 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2665 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2666
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2667 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2668 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2669 req->analyse_exp = TICK_ETERNITY;
2670 return 1;
2671
2672 return_bad_req:
2673 /* We centralize bad requests processing here */
2674 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2675 /* we detected a parsing error. We want to archive this request
2676 * in the dedicated proxy area for later troubleshooting.
2677 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2678 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]2679 }
2680
2681 txn->req.msg_state = HTTP_MSG_ERROR;
2682 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2683 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2684
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2685 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2686 if (s->listener->counters)
2687 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2688
2689 return_prx_cond:
2690 if (!(s->flags & SN_ERR_MASK))
2691 s->flags |= SN_ERR_PRXCOND;
2692 if (!(s->flags & SN_FINST_MASK))
2693 s->flags |= SN_FINST_R;
2694
2695 req->analysers = 0;
2696 req->analyse_exp = TICK_ETERNITY;
2697 return 0;
2698}
2699
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2700/* We reached the stats page through a POST request.
2701 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2702 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2703 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2704int http_process_req_stat_post(struct stream_interface *si, struct http_txn *txn, struct channel *req)
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2705{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2706 struct proxy *px = NULL;
2707 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2708
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2709 char key[LINESIZE];
2710 int action = ST_ADM_ACTION_NONE;
2711 int reprocess = 0;
2712
2713 int total_servers = 0;
2714 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2715
2716 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2717 char *st_cur_param = NULL;
2718 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2719
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2720 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2721 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2722
2723 cur_param = next_param = end_params;
2724
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2725 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2726 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2727 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2728 return 1;
2729 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2730 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2731 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2732 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2733 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2734 }
2735
2736 *end_params = '\0';
2737
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2738 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2739
2740 /*
2741 * Parse the parameters in reverse order to only store the last value.
2742 * From the html form, the backend and the action are at the end.
2743 */
2744 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2745 char *value;
2746 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2747
2748 cur_param--;
2749 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2750 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2751 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2752 poffset = (cur_param != first_param ? 1 : 0);
2753 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2754 if ((plen > 0) && (plen <= sizeof(key))) {
2755 strncpy(key, cur_param + poffset, plen);
2756 key[plen - 1] = '\0';
2757 } else {
2758 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2759 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2760 }
2761
2762 /* Parse the value */
2763 value = key;
2764 while (*value != '\0' && *value != '=') {
2765 value++;
2766 }
2767 if (*value == '=') {
2768 /* Ok, a value is found, we can mark the end of the key */
2769 *value++ = '\0';
2770 }
2771
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2772 if (!url_decode(key) || !url_decode(value))
2773 break;
2774
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2775 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2776 if (!px && (strcmp(key, "b") == 0)) {
2777 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2778 /* the backend name is unknown or ambiguous (duplicate names) */
2779 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2780 goto out;
2781 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2782 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2783 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2784 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2785 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2786 }
2787 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2788 action = ST_ADM_ACTION_ENABLE;
2789 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2790 else if (strcmp(value, "stop") == 0) {
2791 action = ST_ADM_ACTION_STOP;
2792 }
2793 else if (strcmp(value, "start") == 0) {
2794 action = ST_ADM_ACTION_START;
2795 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2796 else if (strcmp(value, "shutdown") == 0) {
2797 action = ST_ADM_ACTION_SHUTDOWN;
2798 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2799 else {
2800 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2801 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2802 }
2803 }
2804 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2805 if (!(px && action)) {
2806 /*
2807 * Indicates that we'll need to reprocess the parameters
2808 * as soon as backend and action are known
2809 */
2810 if (!reprocess) {
2811 st_cur_param = cur_param;
2812 st_next_param = next_param;
2813 }
2814 reprocess = 1;
2815 }
2816 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2817 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2818 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2819 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2820 /* Not already in maintenance, we can change the server state */
2821 sv->state |= SRV_MAINTAIN;
2822 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2823 altered_servers++;
2824 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2825 }
2826 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2827 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2828 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2829 /* Already in maintenance, we can change the server state */
2830 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2831 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2832 altered_servers++;
2833 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2834 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2835 break;
2836 case ST_ADM_ACTION_STOP:
2837 case ST_ADM_ACTION_START:
2838 if (action == ST_ADM_ACTION_START)
2839 sv->uweight = sv->iweight;
2840 else
2841 sv->uweight = 0;
2842
2843 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2844 /* we must take care of not pushing the server to full throttle during slow starts */
2845 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2846 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2847 else
2848 sv->eweight = BE_WEIGHT_SCALE;
2849 sv->eweight *= sv->uweight;
2850 } else {
2851 sv->eweight = sv->uweight;
2852 }
2853
2854 /* static LB algorithms are a bit harder to update */
2855 if (px->lbprm.update_server_eweight)
2856 px->lbprm.update_server_eweight(sv);
2857 else if (sv->eweight) {
2858 if (px->lbprm.set_server_status_up)
2859 px->lbprm.set_server_status_up(sv);
2860 }
2861 else {
2862 if (px->lbprm.set_server_status_down)
2863 px->lbprm.set_server_status_down(sv);
2864 }
2865 altered_servers++;
2866 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2867 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2868 case ST_ADM_ACTION_SHUTDOWN:
2869 if (px->state != PR_STSTOPPED) {
2870 struct session *sess, *sess_bck;
2871
2872 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2873 if (sess->srv_conn == sv)
2874 session_shutdown(sess, SN_ERR_KILLED);
2875
2876 altered_servers++;
2877 total_servers++;
2878 }
2879 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2880 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2881 } else {
2882 /* the server name is unknown or ambiguous (duplicate names) */
2883 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2884 }
2885 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2886 if (reprocess && px && action) {
2887 /* Now, we know the backend and the action chosen by the user.
2888 * We can safely restart from the first server parameter
2889 * to reprocess them
2890 */
2891 cur_param = st_cur_param;
2892 next_param = st_next_param;
2893 reprocess = 0;
2894 goto reprocess_servers;
2895 }
2896
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2897 next_param = cur_param;
2898 }
2899 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2900
2901 if (total_servers == 0) {
2902 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2903 }
2904 else if (altered_servers == 0) {
2905 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2906 }
2907 else if (altered_servers == total_servers) {
2908 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2909 }
2910 else {
2911 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2912 }
2913 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2914 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2915}
2916
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2917/* returns a pointer to the first rule which forbids access (deny or http_auth),
2918 * or NULL if everything's OK.
2919 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2920static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2921http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2922{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2923 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2924
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2925 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2926 int ret = 1;
2927
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2928 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2929 continue;
2930
2931 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2932 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2933 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]2934 ret = acl_pass(ret);
2935
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2936 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2937 ret = !ret;
2938 }
2939
2940 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2941 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2942 return NULL; /* no problem */
2943 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2944 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2945 }
2946 }
2947 return NULL;
2948}
2949
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2950/* This stream analyser runs all HTTP request processing which is common to
2951 * frontends and backends, which means blocking ACLs, filters, connection-close,
2952 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2953 * 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]2954 * either needs more data or wants to immediately abort the request (eg: deny,
2955 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2956 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2957int http_process_req_common(struct session *s, struct channel *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2958{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2959 struct http_txn *txn = &s->txn;
2960 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2961 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2962 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2963 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2964 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2965 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2966
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2967 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2968 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2969 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2970 return 0;
2971 }
2972
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2973 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2974 req->analyse_exp = TICK_ETERNITY;
2975
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2976 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]2977 now_ms, __FUNCTION__,
2978 s,
2979 req,
2980 req->rex, req->wex,
2981 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2982 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2983 req->analysers);
2984
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2985 /* first check whether we have some ACLs set to block this request */
2986 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2987 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]2988
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2989 ret = acl_pass(ret);
2990 if (cond->pol == ACL_COND_UNLESS)
2991 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2992
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2993 if (ret) {
2994 txn->status = 403;
2995 /* let's log the request time */
2996 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2997 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2998 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2999 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3000 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3001 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3002
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3003 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3004 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]3005
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3006 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3007 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3008 do_stats = stats_check_uri(s->rep->prod, txn, px);
3009 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3010 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]3011 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3012 else
3013 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3014
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3015 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3016 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]3017 txn->status = 403;
3018 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3019 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3020 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3021 s->fe->fe_counters.denied_req++;
3022 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3023 s->be->be_counters.denied_req++;
3024 if (s->listener->counters)
3025 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3026 goto return_prx_cond;
3027 }
3028
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3029 /* try headers filters */
3030 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3031 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3032 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3033
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3034 /* has the request been denied ? */
3035 if (txn->flags & TX_CLDENY) {
3036 /* no need to go further */
3037 txn->status = 403;
3038 /* let's log the request time */
3039 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3040 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3041 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3042 goto return_prx_cond;
3043 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3044
3045 /* When a connection is tarpitted, we use the tarpit timeout,
3046 * which may be the same as the connect timeout if unspecified.
3047 * If unset, then set it to zero because we really want it to
3048 * eventually expire. We build the tarpit as an analyser.
3049 */
3050 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3051 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3052 /* wipe the request out so that we can drop the connection early
3053 * if the client closes first.
3054 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3055 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3056 req->analysers = 0; /* remove switching rules etc... */
3057 req->analysers |= AN_REQ_HTTP_TARPIT;
3058 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3059 if (!req->analyse_exp)
3060 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3061 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3062 return 1;
3063 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3064 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3065
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3066 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3067 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3068 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3069 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3070 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3071 * avoid to redo the same work if FE and BE have the same settings (common).
3072 * The method consists in checking if options changed between the two calls
3073 * (implying that either one is non-null, or one of them is non-null and we
3074 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3075 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3076
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3077 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3078 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3079 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3080 (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]3081 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3082
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3083 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3084 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3085 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3086 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3087 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3088 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3089 tmp = TX_CON_WANT_CLO;
3090
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3091 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3092 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3093
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3094 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3095 /* parse the Connection header and possibly clean it */
3096 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3097 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3098 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3099 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3100 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3101 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3102 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3103 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3104 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3105
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3106 /* check if client or config asks for explicit close in KAL/SCL */
3107 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3108 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3109 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3110 (!(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]3111 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3112 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3113 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3114 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3115 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3116
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3117 /* we can be blocked here because the request needs to be authenticated,
3118 * either to pass or to access stats.
3119 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3120 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_HTTP_AUTH) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3121 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3122
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3123 if (!realm)
3124 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3125
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3126 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3127 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3128 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3129 /* on 401 we still count one error, because normal browsing
3130 * won't significantly increase the counter but brute force
3131 * attempts will.
3132 */
3133 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3134 goto return_prx_cond;
3135 }
3136
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3137 /* add request headers from the rule sets in the same order */
3138 list_for_each_entry(wl, &px->req_add, list) {
3139 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3140 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]3141 ret = acl_pass(ret);
3142 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3143 ret = !ret;
3144 if (!ret)
3145 continue;
3146 }
3147
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3148 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3149 goto return_bad_req;
3150 }
3151
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3152 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3153 struct stats_admin_rule *stats_admin_rule;
3154
3155 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3156 * FIXME!!! that one is rather dangerous, we want to
3157 * make it follow standard rules (eg: clear req->analysers).
3158 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3159
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3160 /* now check whether we have some admin rules for this request */
3161 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3162 int ret = 1;
3163
3164 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3165 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]3166 ret = acl_pass(ret);
3167 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3168 ret = !ret;
3169 }
3170
3171 if (ret) {
3172 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3173 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3174 break;
3175 }
3176 }
3177
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3178 /* Was the status page requested with a POST ? */
3179 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3180 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3181 if (msg->msg_state < HTTP_MSG_100_SENT) {
3182 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3183 * send an HTTP/1.1 100 Continue intermediate response.
3184 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3185 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3186 struct hdr_ctx ctx;
3187 ctx.idx = 0;
3188 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3189 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3190 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3191 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3192 }
3193 }
3194 msg->msg_state = HTTP_MSG_100_SENT;
3195 s->logs.tv_request = now; /* update the request timer to reflect full request */
3196 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3197 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3198 /* we need more data */
3199 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3200 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3201 return 0;
3202 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3203 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3204 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3205 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3206 }
3207
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3208 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3209 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3210 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]3211 s->target = s->rep->prod->conn->target; // for logging only
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3212 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3213 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3214 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3215 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3216 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3217
3218 return 0;
3219
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3220 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3221
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3222 /* check whether we have some ACLs set to redirect this request */
3223 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3224 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3225
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3226 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3227 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]3228 ret = acl_pass(ret);
3229 if (rule->cond->pol == ACL_COND_UNLESS)
3230 ret = !ret;
3231 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3232
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3233 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3234 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3235
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3236 /* build redirect message */
3237 switch(rule->code) {
3238 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3239 msg_fmt = HTTP_303;
3240 break;
3241 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3242 msg_fmt = HTTP_301;
3243 break;
3244 case 302:
3245 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3246 msg_fmt = HTTP_302;
3247 break;
3248 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3249
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3250 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3251 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3252
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3253 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3254 case REDIRECT_TYPE_SCHEME: {
3255 const char *path;
3256 const char *host;
3257 struct hdr_ctx ctx;
3258 int pathlen;
3259 int hostlen;
3260
3261 host = "";
3262 hostlen = 0;
3263 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3264 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3265 host = ctx.line + ctx.val;
3266 hostlen = ctx.vlen;
3267 }
3268
3269 path = http_get_path(txn);
3270 /* build message using path */
3271 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3272 pathlen = txn->req.sl.rq.u_l + (req->buf->p + txn->req.sl.rq.u) - path;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3273 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3274 int qs = 0;
3275 while (qs < pathlen) {
3276 if (path[qs] == '?') {
3277 pathlen = qs;
3278 break;
3279 }
3280 qs++;
3281 }
3282 }
3283 } else {
3284 path = "/";
3285 pathlen = 1;
3286 }
3287
3288 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3289 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3290 goto return_bad_req;
3291
3292 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3293 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3294 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3295
3296 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3297 memcpy(trash.str + trash.len, "://", 3);
3298 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3299
3300 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3301 memcpy(trash.str + trash.len, host, hostlen);
3302 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3303
3304 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3305 memcpy(trash.str + trash.len, path, pathlen);
3306 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3307
3308 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3309 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3310 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3311 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3312 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3313 trash.str[trash.len] = '/';
3314 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3315 }
3316
3317 break;
3318 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3319 case REDIRECT_TYPE_PREFIX: {
3320 const char *path;
3321 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3322
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3323 path = http_get_path(txn);
3324 /* build message using path */
3325 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3326 pathlen = txn->req.sl.rq.u_l + (req->buf->p + txn->req.sl.rq.u) - path;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3327 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3328 int qs = 0;
3329 while (qs < pathlen) {
3330 if (path[qs] == '?') {
3331 pathlen = qs;
3332 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3333 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3334 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3335 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3336 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3337 } else {
3338 path = "/";
3339 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3340 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3341
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3342 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3343 goto return_bad_req;
3344
3345 /* add prefix. Note that if prefix == "/", we don't want to
3346 * add anything, otherwise it makes it hard for the user to
3347 * configure a self-redirection.
3348 */
3349 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3350 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3351 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3352 }
3353
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3354 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3355 memcpy(trash.str + trash.len, path, pathlen);
3356 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3357
3358 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3359 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3360 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3361 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3362 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3363 trash.str[trash.len] = '/';
3364 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3365 }
3366
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3367 break;
3368 }
3369 case REDIRECT_TYPE_LOCATION:
3370 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3371 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3372 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3373
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3374 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3375 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3376 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3377 break;
3378 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3379
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3380 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3381 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3382 trash.len += 14;
3383 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3384 trash.len += rule->cookie_len;
3385 memcpy(trash.str + trash.len, "\r\n", 2);
3386 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3387 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3388
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3389 /* add end of headers and the keep-alive/close status.
3390 * We may choose to set keep-alive if the Location begins
3391 * with a slash, because the client will come back to the
3392 * same server.
3393 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3394 txn->status = rule->code;
3395 /* let's log the request time */
3396 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3397
3398 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3399 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3400 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3401 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3402 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3403 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3404 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3405 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3406 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3407 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3408 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3409 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3410 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3411 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3412 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3413 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3414 trash.len += 4;
3415 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3416 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3417 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3418 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3419 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3420 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3421 txn->req.msg_state = HTTP_MSG_CLOSED;
3422 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3423 break;
3424 } else {
3425 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3426 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3427 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3428 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3429 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3430 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3431 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3432 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3433 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3434 goto return_prx_cond;
3435 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3436 }
3437 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3438
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3439 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3440 * If this happens, then the data will not come immediately, so we must
3441 * send all what we have without waiting. Note that due to the small gain
3442 * in waiting for the body of the request, it's easier to simply put the
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3443 * CF_SEND_DONTWAIT flag any time. It's a one-shot flag so it will remove
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3444 * itself once used.
3445 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3446 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3447
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3448 /* that's OK for us now, let's move on to next analysers */
3449 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3450
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3451 return_bad_req:
3452 /* We centralize bad requests processing here */
3453 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3454 /* we detected a parsing error. We want to archive this request
3455 * in the dedicated proxy area for later troubleshooting.
3456 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3457 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]3458 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3459
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3460 txn->req.msg_state = HTTP_MSG_ERROR;
3461 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3462 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3463
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3464 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3465 if (s->listener->counters)
3466 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3467
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3468 return_prx_cond:
3469 if (!(s->flags & SN_ERR_MASK))
3470 s->flags |= SN_ERR_PRXCOND;
3471 if (!(s->flags & SN_FINST_MASK))
3472 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3473
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3474 req->analysers = 0;
3475 req->analyse_exp = TICK_ETERNITY;
3476 return 0;
3477}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3478
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3479/* This function performs all the processing enabled for the current request.
3480 * It returns 1 if the processing can continue on next analysers, or zero if it
3481 * needs more data, encounters an error, or wants to immediately abort the
3482 * request. It relies on buffers flags, and updates s->req->analysers.
3483 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3484int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3485{
3486 struct http_txn *txn = &s->txn;
3487 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3488
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3489 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3490 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3491 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3492 return 0;
3493 }
3494
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3495 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]3496 now_ms, __FUNCTION__,
3497 s,
3498 req,
3499 req->rex, req->wex,
3500 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3501 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3502 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3503
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3504 if (s->fe->comp || s->be->comp)
3505 select_compression_request_header(s, req->buf);
3506
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3507 /*
3508 * Right now, we know that we have processed the entire headers
3509 * and that unwanted requests have been filtered out. We can do
3510 * whatever we want with the remaining request. Also, now we
3511 * may have separate values for ->fe, ->be.
3512 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3514 /*
3515 * If HTTP PROXY is set we simply get remote server address
3516 * parsing incoming request.
3517 */
3518 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3519 url2sa(req->buf->p + msg->sl.rq.u, msg->sl.rq.u_l, &s->req->cons->conn->addr.to);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3520 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3521
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3522 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3523 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3524 * Note that doing so might move headers in the request, but
3525 * the fields will stay coherent and the URI will not move.
3526 * This should only be performed in the backend.
3527 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3528 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3529 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3530 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3531
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3532 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3533 * 8: the appsession cookie was looked up very early in 1.2,
3534 * so let's do the same now.
3535 */
3536
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3537 /* It needs to look into the URI unless persistence must be ignored */
3538 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3539 get_srv_from_appsession(s, req->buf->p + msg->sl.rq.u, msg->sl.rq.u_l);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3540 }
3541
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3542 /* add unique-id if "header-unique-id" is specified */
3543
3544 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3545 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3546
3547 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3548 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3549 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3550 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3551 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3552 goto return_bad_req;
3553 }
3554
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3555 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3556 * 9: add X-Forwarded-For if either the frontend or the backend
3557 * asks for it.
3558 */
3559 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3560 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3561 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3562 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3563 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : s->fe->fwdfor_hdr_len,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3564 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3565 /* The header is set to be added only if none is present
3566 * and we found it, so don't do anything.
3567 */
3568 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3569 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3570 /* Add an X-Forwarded-For header unless the source IP is
3571 * in the 'except' network range.
3572 */
3573 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3574 (((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3575 != s->fe->except_net.s_addr) &&
3576 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3577 (((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3578 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3579 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3580 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3581 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3582
3583 /* Note: we rely on the backend to get the header name to be used for
3584 * x-forwarded-for, because the header is really meant for the backends.
3585 * However, if the backend did not specify any option, we have to rely
3586 * on the frontend's header name.
3587 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3588 if (s->be->fwdfor_hdr_len) {
3589 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3590 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3591 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3592 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3593 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3594 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3595 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3596
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3597 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3598 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3599 }
3600 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3601 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3602 /* FIXME: for the sake of completeness, we should also support
3603 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3604 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3605 int len;
3606 char pn[INET6_ADDRSTRLEN];
3607 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3608 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3609 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3610
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3611 /* Note: we rely on the backend to get the header name to be used for
3612 * x-forwarded-for, because the header is really meant for the backends.
3613 * However, if the backend did not specify any option, we have to rely
3614 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3615 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3616 if (s->be->fwdfor_hdr_len) {
3617 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3618 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3619 } else {
3620 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3621 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3622 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3623 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3624
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3625 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3626 goto return_bad_req;
3627 }
3628 }
3629
3630 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3631 * 10: add X-Original-To if either the frontend or the backend
3632 * asks for it.
3633 */
3634 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3635
3636 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3637 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3638 /* Add an X-Original-To header unless the destination IP is
3639 * in the 'except' network range.
3640 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3641 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3642
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3643 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3644 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3645 (((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3646 != s->fe->except_to.s_addr) &&
3647 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3648 (((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3649 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3650 int len;
3651 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3652 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3653
3654 /* Note: we rely on the backend to get the header name to be used for
3655 * x-original-to, because the header is really meant for the backends.
3656 * However, if the backend did not specify any option, we have to rely
3657 * on the frontend's header name.
3658 */
3659 if (s->be->orgto_hdr_len) {
3660 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3661 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3662 } else {
3663 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3664 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3665 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3666 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3667
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3668 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3669 goto return_bad_req;
3670 }
3671 }
3672 }
3673
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3674 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3675 * If an "Upgrade" token is found, the header is left untouched in order not to have
3676 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3677 * "Upgrade" is present in the Connection header.
3678 */
3679 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3680 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3681 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3682 unsigned int want_flags = 0;
3683
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3684 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3685 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3686 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3687 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3688 want_flags |= TX_CON_CLO_SET;
3689 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3690 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3691 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3692 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3693 want_flags |= TX_CON_KAL_SET;
3694 }
3695
3696 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3697 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3698 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3699
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3700
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3701 /* If we have no server assigned yet and we're balancing on url_param
3702 * with a POST request, we may be interested in checking the body for
3703 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3704 */
3705 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3706 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3707 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3708 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3709 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3710 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3711 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3712
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3713 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3714 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3715#ifdef TCP_QUICKACK
3716 /* We expect some data from the client. Unless we know for sure
3717 * we already have a full request, we have to re-enable quick-ack
3718 * in case we previously disabled it, otherwise we might cause
3719 * the client to delay further data.
3720 */
3721 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3722 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3723 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3724 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3725#endif
3726 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3727
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3728 /*************************************************************
3729 * OK, that's finished for the headers. We have done what we *
3730 * could. Let's switch to the DATA state. *
3731 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3732 req->analyse_exp = TICK_ETERNITY;
3733 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3734
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3735 /* if the server closes the connection, we want to immediately react
3736 * and close the socket to save packets and syscalls.
3737 */
3738 req->cons->flags |= SI_FL_NOHALF;
3739
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3740 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3741 /* OK let's go on with the BODY now */
3742 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3743
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3744 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3745 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3746 /* we detected a parsing error. We want to archive this request
3747 * in the dedicated proxy area for later troubleshooting.
3748 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3749 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]3750 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3751
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3752 txn->req.msg_state = HTTP_MSG_ERROR;
3753 txn->status = 400;
3754 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3755 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3756
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3757 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3758 if (s->listener->counters)
3759 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3760
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3761 if (!(s->flags & SN_ERR_MASK))
3762 s->flags |= SN_ERR_PRXCOND;
3763 if (!(s->flags & SN_FINST_MASK))
3764 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3765 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3766}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3767
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3768/* This function is an analyser which processes the HTTP tarpit. It always
3769 * returns zero, at the beginning because it prevents any other processing
3770 * from occurring, and at the end because it terminates the request.
3771 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3772int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3773{
3774 struct http_txn *txn = &s->txn;
3775
3776 /* This connection is being tarpitted. The CLIENT side has
3777 * already set the connect expiration date to the right
3778 * timeout. We just have to check that the client is still
3779 * there and that the timeout has not expired.
3780 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3781 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3782 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3783 !tick_is_expired(req->analyse_exp, now_ms))
3784 return 0;
3785
3786 /* We will set the queue timer to the time spent, just for
3787 * logging purposes. We fake a 500 server error, so that the
3788 * attacker will not suspect his connection has been tarpitted.
3789 * It will not cause trouble to the logs because we can exclude
3790 * the tarpitted connections by filtering on the 'PT' status flags.
3791 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3792 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3793
3794 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3795 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3796 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3797
3798 req->analysers = 0;
3799 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3800
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3801 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3802 if (s->listener->counters)
3803 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3804
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3805 if (!(s->flags & SN_ERR_MASK))
3806 s->flags |= SN_ERR_PRXCOND;
3807 if (!(s->flags & SN_FINST_MASK))
3808 s->flags |= SN_FINST_T;
3809 return 0;
3810}
3811
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3812/* This function is an analyser which processes the HTTP request body. It looks
3813 * for parameters to be used for the load balancing algorithm (url_param). It
3814 * must only be called after the standard HTTP request processing has occurred,
3815 * because it expects the request to be parsed. It returns zero if it needs to
3816 * read more data, or 1 once it has completed its analysis.
3817 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3818int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3819{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3820 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3821 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3822 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3823
3824 /* We have to parse the HTTP request body to find any required data.
3825 * "balance url_param check_post" should have been the only way to get
3826 * into this. We were brought here after HTTP header analysis, so all
3827 * related structures are ready.
3828 */
3829
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3830 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3831 goto missing_data;
3832
3833 if (msg->msg_state < HTTP_MSG_100_SENT) {
3834 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3835 * send an HTTP/1.1 100 Continue intermediate response.
3836 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3837 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3838 struct hdr_ctx ctx;
3839 ctx.idx = 0;
3840 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3841 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3842 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3843 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3844 }
3845 }
3846 msg->msg_state = HTTP_MSG_100_SENT;
3847 }
3848
3849 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3850 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3851 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3852 * is still null. We must save the body in msg->next because it
3853 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3854 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3855 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3856
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3857 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3858 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3859 else
3860 msg->msg_state = HTTP_MSG_DATA;
3861 }
3862
3863 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3864 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3865 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3866 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3867 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3868 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3869
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3870 if (!ret)
3871 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3872 else if (ret < 0) {
3873 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3874 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3875 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3876 }
3877
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3878 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3879 * We have the first data byte is in msg->sov. We're waiting for at
3880 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3881 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3882
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3883 if (msg->body_len < limit)
3884 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3885
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3886 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3887 goto http_end;
3888
3889 missing_data:
3890 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3891 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3892 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3893 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3894 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3895
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3896 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3897 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3898 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3899
3900 if (!(s->flags & SN_ERR_MASK))
3901 s->flags |= SN_ERR_CLITO;
3902 if (!(s->flags & SN_FINST_MASK))
3903 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3904 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3905 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3906
3907 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3908 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR)) && !buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3909 /* Not enough data. We'll re-use the http-request
3910 * timeout here. Ideally, we should set the timeout
3911 * relative to the accept() date. We just set the
3912 * request timeout once at the beginning of the
3913 * request.
3914 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3915 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3916 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3917 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3918 return 0;
3919 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3920
3921 http_end:
3922 /* The situation will not evolve, so let's give up on the analysis. */
3923 s->logs.tv_request = now; /* update the request timer to reflect full request */
3924 req->analysers &= ~an_bit;
3925 req->analyse_exp = TICK_ETERNITY;
3926 return 1;
3927
3928 return_bad_req: /* let's centralize all bad requests */
3929 txn->req.msg_state = HTTP_MSG_ERROR;
3930 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3931 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3932
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3933 if (!(s->flags & SN_ERR_MASK))
3934 s->flags |= SN_ERR_PRXCOND;
3935 if (!(s->flags & SN_FINST_MASK))
3936 s->flags |= SN_FINST_R;
3937
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3938 return_err_msg:
3939 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3940 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3941 if (s->listener->counters)
3942 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3943 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3944}
3945
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3946/* send a server's name with an outgoing request over an established connection.
3947 * Note: this function is designed to be called once the request has been scheduled
3948 * for being forwarded. This is the reason why it rewinds the buffer before
3949 * proceeding.
3950 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3951int 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]3952
3953 struct hdr_ctx ctx;
3954
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3955 char *hdr_name = be->server_id_hdr_name;
3956 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3957 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3958 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3959 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3960
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3961 ctx.idx = 0;
3962
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3963 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3964 if (old_o) {
3965 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3966 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3967 }
3968
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3969 old_i = chn->buf->i;
3970 while (http_find_header2(hdr_name, hdr_name_len, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3971 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3972 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3973 }
3974
3975 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3976 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3977 memcpy(hdr_val, hdr_name, hdr_name_len);
3978 hdr_val += hdr_name_len;
3979 *hdr_val++ = ':';
3980 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3981 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
3982 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, hdr_val - trash.str);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3983
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3984 if (old_o) {
3985 /* If this was a forwarded request, we must readjust the amount of
3986 * data to be forwarded in order to take into account the size
3987 * variations.
3988 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3989 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3990 }
3991
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3992 return 0;
3993}
3994
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3995/* Terminate current transaction and prepare a new one. This is very tricky
3996 * right now but it works.
3997 */
3998void http_end_txn_clean_session(struct session *s)
3999{
4000 /* FIXME: We need a more portable way of releasing a backend's and a
4001 * server's connections. We need a safer way to reinitialize buffer
4002 * flags. We also need a more accurate method for computing per-request
4003 * data.
4004 */
4005 http_silent_debug(__LINE__, s);
4006
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4007 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4008 si_shutr(s->req->cons);
4009 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4010
4011 http_silent_debug(__LINE__, s);
4012
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4013 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4014 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4015 if (unlikely(s->srv_conn))
4016 sess_change_server(s, NULL);
4017 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4018
4019 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4020 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4021 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4022
4023 if (s->txn.status) {
4024 int n;
4025
4026 n = s->txn.status / 100;
4027 if (n < 1 || n > 5)
4028 n = 0;
4029
4030 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4031 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4032
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4033 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4034 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4035 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4036 }
4037
4038 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4039 s->logs.bytes_in -= s->req->buf->i;
4040 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4041
4042 /* let's do a final log if we need it */
4043 if (s->logs.logwait &&
4044 !(s->flags & SN_MONITOR) &&
4045 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4046 s->do_log(s);
4047 }
4048
4049 s->logs.accept_date = date; /* user-visible date for logging */
4050 s->logs.tv_accept = now; /* corrected date for internal use */
4051 tv_zero(&s->logs.tv_request);
4052 s->logs.t_queue = -1;
4053 s->logs.t_connect = -1;
4054 s->logs.t_data = -1;
4055 s->logs.t_close = 0;
4056 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4057 s->logs.srv_queue_size = 0; /* we will get this number soon */
4058
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4059 s->logs.bytes_in = s->req->total = s->req->buf->i;
4060 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4061
4062 if (s->pend_pos)
4063 pendconn_free(s->pend_pos);
4064
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4065 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4066 if (s->flags & SN_CURR_SESS) {
4067 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4068 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4069 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4070 if (may_dequeue_tasks(objt_server(s->target), s->be))
4071 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4072 }
4073
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4074 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4075
4076 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4077 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4078 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4079 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4080 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4081 s->req->cons->err_loc = NULL;
4082 s->req->cons->exp = TICK_ETERNITY;
4083 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4084 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4085 s->rep->flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4086 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]4087 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4088
4089 if (s->flags & SN_COMP_READY)
4090 s->comp_algo->end(&s->comp_ctx);
4091 s->comp_algo = NULL;
4092 s->flags &= ~SN_COMP_READY;
4093
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4094 s->txn.meth = 0;
4095 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4096 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4097 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4098 s->req->cons->flags |= SI_FL_INDEP_STR;
4099
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4100 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4101 s->req->flags |= CF_NEVER_WAIT;
4102 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4103 }
4104
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4105 /* if the request buffer is not empty, it means we're
4106 * about to process another request, so send pending
4107 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4108 * Just don't do this if the buffer is close to be full,
4109 * because the request will wait for it to flush a little
4110 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4111 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4112 if (s->req->buf->i) {
4113 if (s->rep->buf->o &&
4114 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4115 bi_end(s->rep->buf) <= s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4116 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4117 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4118
4119 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4120 channel_auto_read(s->req);
4121 channel_auto_close(s->req);
4122 channel_auto_read(s->rep);
4123 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4124
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4125 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4126 s->rep->analysers = 0;
4127
4128 http_silent_debug(__LINE__, s);
4129}
4130
4131
4132/* This function updates the request state machine according to the response
4133 * state machine and buffer flags. It returns 1 if it changes anything (flag
4134 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4135 * it is only used to find when a request/response couple is complete. Both
4136 * this function and its equivalent should loop until both return zero. It
4137 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4138 */
4139int http_sync_req_state(struct session *s)
4140{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4141 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4142 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4143 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4144 unsigned int old_state = txn->req.msg_state;
4145
4146 http_silent_debug(__LINE__, s);
4147 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4148 return 0;
4149
4150 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4151 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4152 * We can shut the read side unless we want to abort_on_close,
4153 * or we have a POST request. The issue with POST requests is
4154 * that some browsers still send a CRLF after the request, and
4155 * this CRLF must be read so that it does not remain in the kernel
4156 * buffers, otherwise a close could cause an RST on some systems
4157 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4158 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4159 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4160 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4161
4162 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4163 goto wait_other_side;
4164
4165 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4166 /* The server has not finished to respond, so we
4167 * don't want to move in order not to upset it.
4168 */
4169 goto wait_other_side;
4170 }
4171
4172 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4173 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4174 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4175 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4176 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4177 goto wait_other_side;
4178 }
4179
4180 /* When we get here, it means that both the request and the
4181 * response have finished receiving. Depending on the connection
4182 * mode, we'll have to wait for the last bytes to leave in either
4183 * direction, and sometimes for a close to be effective.
4184 */
4185
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4186 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4187 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4188 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4189 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4190 }
4191 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4192 /* Option forceclose is set, or either side wants to close,
4193 * let's enforce it now that we're not expecting any new
4194 * data to come. The caller knows the session is complete
4195 * once both states are CLOSED.
4196 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4197 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4198 channel_shutr_now(chn);
4199 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4200 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4201 }
4202 else {
4203 /* The last possible modes are keep-alive and tunnel. Since tunnel
4204 * mode does not set the body analyser, we can't reach this place
4205 * in tunnel mode, so we're left with keep-alive only.
4206 * This mode is currently not implemented, we switch to tunnel mode.
4207 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4208 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4209 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4210 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4211 }
4212
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4213 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4214 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4215 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4216
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4217 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4218 txn->req.msg_state = HTTP_MSG_CLOSING;
4219 goto http_msg_closing;
4220 }
4221 else {
4222 txn->req.msg_state = HTTP_MSG_CLOSED;
4223 goto http_msg_closed;
4224 }
4225 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4226 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4227 }
4228
4229 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4230 http_msg_closing:
4231 /* nothing else to forward, just waiting for the output buffer
4232 * to be empty and for the shutw_now to take effect.
4233 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4234 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4235 txn->req.msg_state = HTTP_MSG_CLOSED;
4236 goto http_msg_closed;
4237 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4238 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4239 txn->req.msg_state = HTTP_MSG_ERROR;
4240 goto wait_other_side;
4241 }
4242 }
4243
4244 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4245 http_msg_closed:
4246 goto wait_other_side;
4247 }
4248
4249 wait_other_side:
4250 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4251 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4252}
4253
4254
4255/* This function updates the response state machine according to the request
4256 * state machine and buffer flags. It returns 1 if it changes anything (flag
4257 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4258 * it is only used to find when a request/response couple is complete. Both
4259 * this function and its equivalent should loop until both return zero. It
4260 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4261 */
4262int http_sync_res_state(struct session *s)
4263{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4264 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4265 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4266 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4267 unsigned int old_state = txn->rsp.msg_state;
4268
4269 http_silent_debug(__LINE__, s);
4270 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4271 return 0;
4272
4273 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4274 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4275 * still monitor the server connection for a possible close
4276 * while the request is being uploaded, so we don't disable
4277 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4278 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4279 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4280
4281 if (txn->req.msg_state == HTTP_MSG_ERROR)
4282 goto wait_other_side;
4283
4284 if (txn->req.msg_state < HTTP_MSG_DONE) {
4285 /* The client seems to still be sending data, probably
4286 * because we got an error response during an upload.
4287 * We have the choice of either breaking the connection
4288 * or letting it pass through. Let's do the later.
4289 */
4290 goto wait_other_side;
4291 }
4292
4293 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4294 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4295 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4296 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4297 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4298 goto wait_other_side;
4299 }
4300
4301 /* When we get here, it means that both the request and the
4302 * response have finished receiving. Depending on the connection
4303 * mode, we'll have to wait for the last bytes to leave in either
4304 * direction, and sometimes for a close to be effective.
4305 */
4306
4307 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4308 /* Server-close mode : shut read and wait for the request
4309 * side to close its output buffer. The caller will detect
4310 * when we're in DONE and the other is in CLOSED and will
4311 * catch that for the final cleanup.
4312 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4313 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4314 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4315 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4316 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4317 /* Option forceclose is set, or either side wants to close,
4318 * let's enforce it now that we're not expecting any new
4319 * data to come. The caller knows the session is complete
4320 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4321 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4322 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4323 channel_shutr_now(chn);
4324 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4325 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4326 }
4327 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4328 /* The last possible modes are keep-alive and tunnel. Since tunnel
4329 * mode does not set the body analyser, we can't reach this place
4330 * in tunnel mode, so we're left with keep-alive only.
4331 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4332 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4333 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4334 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4335 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4336 }
4337
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4338 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4339 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4340 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4341 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4342 goto http_msg_closing;
4343 }
4344 else {
4345 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4346 goto http_msg_closed;
4347 }
4348 }
4349 goto wait_other_side;
4350 }
4351
4352 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4353 http_msg_closing:
4354 /* nothing else to forward, just waiting for the output buffer
4355 * to be empty and for the shutw_now to take effect.
4356 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4357 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4358 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4359 goto http_msg_closed;
4360 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4361 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4362 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4363 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4364 if (objt_server(s->target))
4365 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4366 goto wait_other_side;
4367 }
4368 }
4369
4370 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4371 http_msg_closed:
4372 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4373 bi_erase(chn);
4374 channel_auto_close(chn);
4375 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4376 goto wait_other_side;
4377 }
4378
4379 wait_other_side:
4380 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4381 /* We force the response to leave immediately if we're waiting for the
4382 * other side, since there is no pending shutdown to push it out.
4383 */
4384 if (!channel_is_empty(chn))
4385 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4386 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4387}
4388
4389
4390/* Resync the request and response state machines. Return 1 if either state
4391 * changes.
4392 */
4393int http_resync_states(struct session *s)
4394{
4395 struct http_txn *txn = &s->txn;
4396 int old_req_state = txn->req.msg_state;
4397 int old_res_state = txn->rsp.msg_state;
4398
4399 http_silent_debug(__LINE__, s);
4400 http_sync_req_state(s);
4401 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4402 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4403 if (!http_sync_res_state(s))
4404 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4405 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4406 if (!http_sync_req_state(s))
4407 break;
4408 }
4409 http_silent_debug(__LINE__, s);
4410 /* OK, both state machines agree on a compatible state.
4411 * There are a few cases we're interested in :
4412 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4413 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4414 * directions, so let's simply disable both analysers.
4415 * - HTTP_MSG_CLOSED on the response only means we must abort the
4416 * request.
4417 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4418 * with server-close mode means we've completed one request and we
4419 * must re-initialize the server connection.
4420 */
4421
4422 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4423 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4424 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4425 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4426 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4427 channel_auto_close(s->req);
4428 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4429 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4430 channel_auto_close(s->rep);
4431 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4432 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4433 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4434 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4435 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4436 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4437 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4438 channel_auto_close(s->rep);
4439 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4440 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4441 channel_abort(s->req);
4442 channel_auto_close(s->req);
4443 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4444 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4445 }
4446 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4447 txn->rsp.msg_state == HTTP_MSG_DONE &&
4448 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4449 /* server-close: terminate this server connection and
4450 * reinitialize a fresh-new transaction.
4451 */
4452 http_end_txn_clean_session(s);
4453 }
4454
4455 http_silent_debug(__LINE__, s);
4456 return txn->req.msg_state != old_req_state ||
4457 txn->rsp.msg_state != old_res_state;
4458}
4459
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4460/* This function is an analyser which forwards request body (including chunk
4461 * sizes if any). It is called as soon as we must forward, even if we forward
4462 * zero byte. The only situation where it must not be called is when we're in
4463 * tunnel mode and we want to forward till the close. It's used both to forward
4464 * remaining data and to resync after end of body. It expects the msg_state to
4465 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4466 * 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]4467 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4468 * bytes of pending data + the headers if not already done (between sol and sov).
4469 * It eventually adjusts sol to match sov after the data in between have been sent.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4470 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4471int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4472{
4473 struct http_txn *txn = &s->txn;
4474 struct http_msg *msg = &s->txn.req;
4475
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4476 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4477 return 0;
4478
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4479 if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4480 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4481 /* Output closed while we were sending data. We must abort and
4482 * wake the other side up.
4483 */
4484 msg->msg_state = HTTP_MSG_ERROR;
4485 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4486 return 1;
4487 }
4488
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4489 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4490 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4491
4492 /* Note that we don't have to send 100-continue back because we don't
4493 * need the data to complete our job, and it's up to the server to
4494 * decide whether to return 100, 417 or anything else in return of
4495 * an "Expect: 100-continue" header.
4496 */
4497
4498 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4499 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4500 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4501 * is still null. We must save the body in msg->next because it
4502 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4503 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4504 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4505
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4506 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4507 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4508 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4509 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4510 }
4511
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4512 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4513 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4514
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4515 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4516 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4517 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4518 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4519 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4520 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4521 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4522 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4523 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4524
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4525 if (msg->msg_state == HTTP_MSG_DATA) {
4526 /* must still forward */
4527 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4528 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4529
4530 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4531 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4532 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4533 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4534 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4535 }
4536 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4537 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4538 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4539 * TRAILERS state.
4540 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4541 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4542
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4543 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4544 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4545 else if (ret < 0) {
4546 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4547 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4548 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]4549 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4550 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4551 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4552 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4553 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4554 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4555 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4556
4557 if (ret == 0)
4558 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4559 else if (ret < 0) {
4560 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4561 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4562 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_CRLF, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4563 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4564 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4565 /* we're in MSG_CHUNK_SIZE now */
4566 }
4567 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4568 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4569
4570 if (ret == 0)
4571 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4572 else if (ret < 0) {
4573 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4574 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4575 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]4576 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4577 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4578 /* we're in HTTP_MSG_DONE now */
4579 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4580 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4581 int old_state = msg->msg_state;
4582
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4583 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4584 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4585 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4586 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4587 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4588 if (http_resync_states(s)) {
4589 /* some state changes occurred, maybe the analyser
4590 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4591 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4592 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4593 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4594 /* request errors are most likely due to
4595 * the server aborting the transfer.
4596 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4597 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4598 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4599 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4600 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4601 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4602 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4603 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4604 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4605
4606 /* If "option abortonclose" is set on the backend, we
4607 * want to monitor the client's connection and forward
4608 * any shutdown notification to the server, which will
4609 * decide whether to close or to go on processing the
4610 * request.
4611 */
4612 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4613 channel_auto_read(req);
4614 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4615 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4616 else if (s->txn.meth == HTTP_METH_POST) {
4617 /* POST requests may require to read extra CRLF
4618 * sent by broken browsers and which could cause
4619 * an RST to be sent upon close on some systems
4620 * (eg: Linux).
4621 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4622 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4623 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4624
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4625 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4626 }
4627 }
4628
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4629 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4630 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4631 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4632 if (!(s->flags & SN_ERR_MASK))
4633 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4634 if (!(s->flags & SN_FINST_MASK)) {
4635 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4636 s->flags |= SN_FINST_H;
4637 else
4638 s->flags |= SN_FINST_D;
4639 }
4640
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4641 s->fe->fe_counters.cli_aborts++;
4642 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4643 if (objt_server(s->target))
4644 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4645
4646 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4647 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4648
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4649 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4650 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4651 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4652
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4653 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4654 * chunks even if the client has closed, so we don't want to set CF_DONTCLOSE.
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4655 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4656 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4657 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4658
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4659 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4660 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]4661 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4662 * modes are already handled by the stream sock layer. We must not do
4663 * this in content-length mode because it could present the MSG_MORE
4664 * flag with the last block of forwarded data, which would cause an
4665 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4666 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4667 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4668 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4669
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4670 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4671 return 0;
4672
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4673 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4674 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4675 if (s->listener->counters)
4676 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4677 return_bad_req_stats_ok:
4678 txn->req.msg_state = HTTP_MSG_ERROR;
4679 if (txn->status) {
4680 /* Note: we don't send any error if some data were already sent */
4681 stream_int_retnclose(req->prod, NULL);
4682 } else {
4683 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4684 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4685 }
4686 req->analysers = 0;
4687 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]4688
4689 if (!(s->flags & SN_ERR_MASK))
4690 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4691 if (!(s->flags & SN_FINST_MASK)) {
4692 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4693 s->flags |= SN_FINST_H;
4694 else
4695 s->flags |= SN_FINST_D;
4696 }
4697 return 0;
4698
4699 aborted_xfer:
4700 txn->req.msg_state = HTTP_MSG_ERROR;
4701 if (txn->status) {
4702 /* Note: we don't send any error if some data were already sent */
4703 stream_int_retnclose(req->prod, NULL);
4704 } else {
4705 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4706 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4707 }
4708 req->analysers = 0;
4709 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4710
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4711 s->fe->fe_counters.srv_aborts++;
4712 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4713 if (objt_server(s->target))
4714 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4715
4716 if (!(s->flags & SN_ERR_MASK))
4717 s->flags |= SN_ERR_SRVCL;
4718 if (!(s->flags & SN_FINST_MASK)) {
4719 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4720 s->flags |= SN_FINST_H;
4721 else
4722 s->flags |= SN_FINST_D;
4723 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4724 return 0;
4725}
4726
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4727/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4728 * processing can continue on next analysers, or zero if it either needs more
4729 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4730 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4731 * when it has nothing left to do, and may remove any analyser when it wants to
4732 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4733 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4734int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4735{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4736 struct http_txn *txn = &s->txn;
4737 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4738 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4739 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4740 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4741 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4742
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4743 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]4744 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4745 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4746 rep,
4747 rep->rex, rep->wex,
4748 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4749 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4750 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4751
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4752 /*
4753 * Now parse the partial (or complete) lines.
4754 * We will check the response syntax, and also join multi-line
4755 * headers. An index of all the lines will be elaborated while
4756 * parsing.
4757 *
4758 * For the parsing, we use a 28 states FSM.
4759 *
4760 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4761 * rep->buf->p = beginning of response
4762 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4763 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4764 * msg->eol = end of current header or line (LF or CRLF)
4765 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4766 */
4767
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4768 /* There's a protected area at the end of the buffer for rewriting
4769 * purposes. We don't want to start to parse the request if the
4770 * protected area is affected, because we may have to move processed
4771 * data later, which is much more complicated.
4772 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4773 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4774 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4775 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4776 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4777 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4778 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4779 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4780 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4781 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4782 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4783 return 0;
4784 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4785 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4786 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4787 }
4788
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4789 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4790 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4791 }
4792
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4793 /* 1: we might have to print this header in debug mode */
4794 if (unlikely((global.mode & MODE_DEBUG) &&
4795 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4796 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4797 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4798
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4799 sol = rep->buf->p;
4800 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4801 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4802
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4803 sol += hdr_idx_first_pos(&txn->hdr_idx);
4804 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4805
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4806 while (cur_idx) {
4807 eol = sol + txn->hdr_idx.v[cur_idx].len;
4808 debug_hdr("srvhdr", s, sol, eol);
4809 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4810 cur_idx = txn->hdr_idx.v[cur_idx].next;
4811 }
4812 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4813
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4814 /*
4815 * Now we quickly check if we have found a full valid response.
4816 * If not so, we check the FD and buffer states before leaving.
4817 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4818 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4819 * responses are checked first.
4820 *
4821 * Depending on whether the client is still there or not, we
4822 * may send an error response back or not. Note that normally
4823 * we should only check for HTTP status there, and check I/O
4824 * errors somewhere else.
4825 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4826
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4827 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4828 /* Invalid response */
4829 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4830 /* we detected a parsing error. We want to archive this response
4831 * in the dedicated proxy area for later troubleshooting.
4832 */
4833 hdr_response_bad:
4834 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4835 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]4836
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4837 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4838 if (objt_server(s->target)) {
4839 objt_server(s->target)->counters.failed_resp++;
4840 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4841 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4842 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4843 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4844 rep->analysers = 0;
4845 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4846 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4847 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4848 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4849
4850 if (!(s->flags & SN_ERR_MASK))
4851 s->flags |= SN_ERR_PRXCOND;
4852 if (!(s->flags & SN_FINST_MASK))
4853 s->flags |= SN_FINST_H;
4854
4855 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4856 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4857
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4858 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4859 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4860 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4861 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4862 goto hdr_response_bad;
4863 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4864
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4865 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4866 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4867 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4868 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]4869
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4870 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4871 if (objt_server(s->target)) {
4872 objt_server(s->target)->counters.failed_resp++;
4873 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4874 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4875
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4876 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4877 rep->analysers = 0;
4878 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4879 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4880 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4881 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4882
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4883 if (!(s->flags & SN_ERR_MASK))
4884 s->flags |= SN_ERR_SRVCL;
4885 if (!(s->flags & SN_FINST_MASK))
4886 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4887 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4888 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4889
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4890 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4891 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4892 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4893 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]4894
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4895 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4896 if (objt_server(s->target)) {
4897 objt_server(s->target)->counters.failed_resp++;
4898 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4899 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4900
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4901 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4902 rep->analysers = 0;
4903 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4904 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4905 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4906 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4907
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4908 if (!(s->flags & SN_ERR_MASK))
4909 s->flags |= SN_ERR_SRVTO;
4910 if (!(s->flags & SN_FINST_MASK))
4911 s->flags |= SN_FINST_H;
4912 return 0;
4913 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4914
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4915 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4916 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4917 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4918 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]4919
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4920 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4921 if (objt_server(s->target)) {
4922 objt_server(s->target)->counters.failed_resp++;
4923 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4924 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4925
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4926 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4927 rep->analysers = 0;
4928 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4929 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4930 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4931 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4932
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4933 if (!(s->flags & SN_ERR_MASK))
4934 s->flags |= SN_ERR_SRVCL;
4935 if (!(s->flags & SN_FINST_MASK))
4936 s->flags |= SN_FINST_H;
4937 return 0;
4938 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4939
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4940 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4941 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4942 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4943 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]4944
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4945 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4946 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4947 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4948
4949 if (!(s->flags & SN_ERR_MASK))
4950 s->flags |= SN_ERR_CLICL;
4951 if (!(s->flags & SN_FINST_MASK))
4952 s->flags |= SN_FINST_H;
4953
4954 /* process_session() will take care of the error */
4955 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4956 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4957
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4958 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4959 return 0;
4960 }
4961
4962 /* More interesting part now : we know that we have a complete
4963 * response which at least looks like HTTP. We have an indicator
4964 * of each header's length, so we can parse them quickly.
4965 */
4966
4967 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4968 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]4969
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4970 /*
4971 * 1: get the status code
4972 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4973 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4974 if (n < 1 || n > 5)
4975 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4976 /* when the client triggers a 4xx from the server, it's most often due
4977 * to a missing object or permission. These events should be tracked
4978 * because if they happen often, it may indicate a brute force or a
4979 * vulnerability scan.
4980 */
4981 if (n == 4)
4982 session_inc_http_err_ctr(s);
4983
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4984 if (objt_server(s->target))
4985 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4986
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4987 /* check if the response is HTTP/1.1 or above */
4988 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4989 ((rep->buf->p[5] > '1') ||
4990 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4991 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4992
4993 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4994 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_HDR_CONN_UPG|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4995
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4996 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4997 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4998
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4999 txn->status = strl2ui(rep->buf->p + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5000
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5001 /* Adjust server's health based on status code. Note: status codes 501
5002 * and 505 are triggered on demand by client request, so we must not
5003 * count them as server failures.
5004 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5005 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5006 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5007 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5008 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5009 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5010 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5011
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5012 /*
5013 * 2: check for cacheability.
5014 */
5015
5016 switch (txn->status) {
5017 case 200:
5018 case 203:
5019 case 206:
5020 case 300:
5021 case 301:
5022 case 410:
5023 /* RFC2616 @13.4:
5024 * "A response received with a status code of
5025 * 200, 203, 206, 300, 301 or 410 MAY be stored
5026 * by a cache (...) unless a cache-control
5027 * directive prohibits caching."
5028 *
5029 * RFC2616 @9.5: POST method :
5030 * "Responses to this method are not cacheable,
5031 * unless the response includes appropriate
5032 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5033 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5034 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5035 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5036 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5037 break;
5038 default:
5039 break;
5040 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5041
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5042 /*
5043 * 3: we may need to capture headers
5044 */
5045 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5046 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5047 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5048 txn->rsp.cap, s->fe->rsp_cap);
5049
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5050 /* 4: determine the transfer-length.
5051 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5052 * the presence of a message-body in a RESPONSE and its transfer length
5053 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5054 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5055 * All responses to the HEAD request method MUST NOT include a
5056 * message-body, even though the presence of entity-header fields
5057 * might lead one to believe they do. All 1xx (informational), 204
5058 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5059 * message-body. All other responses do include a message-body,
5060 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5061 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5062 * 1. Any response which "MUST NOT" include a message-body (such as the
5063 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5064 * always terminated by the first empty line after the header fields,
5065 * regardless of the entity-header fields present in the message.
5066 *
5067 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5068 * the "chunked" transfer-coding (Section 6.2) is used, the
5069 * transfer-length is defined by the use of this transfer-coding.
5070 * If a Transfer-Encoding header field is present and the "chunked"
5071 * transfer-coding is not present, the transfer-length is defined by
5072 * the sender closing the connection.
5073 *
5074 * 3. If a Content-Length header field is present, its decimal value in
5075 * OCTETs represents both the entity-length and the transfer-length.
5076 * If a message is received with both a Transfer-Encoding header
5077 * field and a Content-Length header field, the latter MUST be ignored.
5078 *
5079 * 4. If the message uses the media type "multipart/byteranges", and
5080 * the transfer-length is not otherwise specified, then this self-
5081 * delimiting media type defines the transfer-length. This media
5082 * type MUST NOT be used unless the sender knows that the recipient
5083 * can parse it; the presence in a request of a Range header with
5084 * multiple byte-range specifiers from a 1.1 client implies that the
5085 * client can parse multipart/byteranges responses.
5086 *
5087 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5088 */
5089
5090 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5091 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5092 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5093 * FIXME: should we parse anyway and return an error on chunked encoding ?
5094 */
5095 if (txn->meth == HTTP_METH_HEAD ||
5096 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5097 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5098 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5099 goto skip_content_length;
5100 }
5101
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5102 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5103 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5104 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5105 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5106 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5107 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5108 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5109 /* bad transfer-encoding (chunked followed by something else) */
5110 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5111 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5112 break;
5113 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5114 }
5115
5116 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5117 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5118 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5119 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5120 signed long long cl;
5121
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5122 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5123 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5124 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5125 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5126
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5127 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5128 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5129 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5130 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5131
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5132 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5133 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5134 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5135 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5136
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5137 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5138 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5139 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5140 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5141
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5142 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5143 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5144 }
5145
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5146 if (s->fe->comp || s->be->comp)
5147 select_compression_response_header(s, rep->buf);
5148
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5149 /* FIXME: we should also implement the multipart/byterange method.
5150 * For now on, we resort to close mode in this case (unknown length).
5151 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5152skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5153
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5154 /* end of job, return OK */
5155 rep->analysers &= ~an_bit;
5156 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5157 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5158 return 1;
5159}
5160
5161/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5162 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5163 * and updates t->rep->analysers. It might make sense to explode it into several
5164 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5165 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5166int http_process_res_common(struct session *t, struct channel *rep, int an_bit, struct proxy *px)
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5167{
5168 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5169 struct http_msg *msg = &txn->rsp;
5170 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5171 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5172
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5173 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]5174 now_ms, __FUNCTION__,
5175 t,
5176 rep,
5177 rep->rex, rep->wex,
5178 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5179 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5180 rep->analysers);
5181
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5182 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5183 return 0;
5184
5185 rep->analysers &= ~an_bit;
5186 rep->analyse_exp = TICK_ETERNITY;
5187
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5188 /* Now we have to check if we need to modify the Connection header.
5189 * This is more difficult on the response than it is on the request,
5190 * because we can have two different HTTP versions and we don't know
5191 * how the client will interprete a response. For instance, let's say
5192 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5193 * HTTP/1.1 response without any header. Maybe it will bound itself to
5194 * HTTP/1.0 because it only knows about it, and will consider the lack
5195 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5196 * the lack of header as a keep-alive. Thus we will use two flags
5197 * indicating how a request MAY be understood by the client. In case
5198 * of multiple possibilities, we'll fix the header to be explicit. If
5199 * ambiguous cases such as both close and keepalive are seen, then we
5200 * will fall back to explicit close. Note that we won't take risks with
5201 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5202 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5203 */
5204
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5205 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5206 txn->status == 101)) {
5207 /* Either we've established an explicit tunnel, or we're
5208 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5209 * to understand the next protocols. We have to switch to tunnel
5210 * mode, so that we transfer the request and responses then let
5211 * this protocol pass unmodified. When we later implement specific
5212 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5213 * header which contains information about that protocol for
5214 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5215 */
5216 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5217 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5218 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5219 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5220 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5221 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5222
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5223 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5224 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5225 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5226 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5227
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5228 /* now adjust header transformations depending on current state */
5229 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5230 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5231 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5232 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5233 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5234 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5235 else { /* SCL / KAL */
5236 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5237 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5238 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5239 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5240
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5241 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5242 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5243
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5244 /* Some keep-alive responses are converted to Server-close if
5245 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5246 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5247 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5248 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5249 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5250 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5251 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5252 }
5253
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5254 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5255 /*
5256 * 3: we will have to evaluate the filters.
5257 * As opposed to version 1.2, now they will be evaluated in the
5258 * filters order and not in the header order. This means that
5259 * each filter has to be validated among all headers.
5260 *
5261 * Filters are tried with ->be first, then with ->fe if it is
5262 * different from ->be.
5263 */
5264
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5265 cur_proxy = t->be;
5266 while (1) {
5267 struct proxy *rule_set = cur_proxy;
5268
5269 /* try headers filters */
5270 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5271 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5272 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5273 if (objt_server(t->target)) {
5274 objt_server(t->target)->counters.failed_resp++;
5275 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5276 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5277 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5278 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5279 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5280 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5281 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5282 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5283 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5284 if (!(t->flags & SN_ERR_MASK))
5285 t->flags |= SN_ERR_PRXCOND;
5286 if (!(t->flags & SN_FINST_MASK))
5287 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5288 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5289 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5290 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5291
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5292 /* has the response been denied ? */
5293 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5294 if (objt_server(t->target))
5295 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5296
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5297 t->be->be_counters.denied_resp++;
5298 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5299 if (t->listener->counters)
5300 t->listener->counters->denied_resp++;
5301
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5302 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5303 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5304
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5305 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5306 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5307 if (txn->status < 200)
5308 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5309 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5310 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]5311 ret = acl_pass(ret);
5312 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5313 ret = !ret;
5314 if (!ret)
5315 continue;
5316 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5317 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5318 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5319 }
5320
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5321 /* check whether we're already working on the frontend */
5322 if (cur_proxy == t->fe)
5323 break;
5324 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5325 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5326
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5327 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5328 * We may be facing a 100-continue response, in which case this
5329 * is not the right response, and we're waiting for the next one.
5330 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5331 * next one.
5332 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5333 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5334 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5335 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5336 msg->msg_state = HTTP_MSG_RPBEFORE;
5337 txn->status = 0;
5338 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5339 return 1;
5340 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5341 else if (unlikely(txn->status < 200))
5342 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5343
5344 /* we don't have any 1xx status code now */
5345
5346 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5347 * 4: check for server cookie.
5348 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5349 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5350 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5351 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5352
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5353
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5354 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5355 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5356 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5357 if ((t->be->options & PR_O_CHK_CACHE) || (t->be->ck_opts & PR_CK_NOC))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5358 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5359
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5360 /*
5361 * 6: add server cookie in the response if needed
5362 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5363 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5364 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5365 (!(t->flags & SN_DIRECT) ||
5366 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5367 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5368 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5369 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5370 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5371 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5372 /* the server is known, it's not the one the client requested, or the
5373 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5374 * insert a set-cookie here, except if we want to insert only on POST
5375 * requests and this one isn't. Note that servers which don't have cookies
5376 * (eg: some backup servers) will return a full cookie removal request.
5377 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5378 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5379 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5380 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5381 t->be->cookie_name);
5382 }
5383 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5384 chunk_printf(&trash, "Set-Cookie: %s=%s", t->be->cookie_name, objt_server(t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5385
5386 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5387 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5388 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5389 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5390 trash.len += 5;
5391
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5392 if (t->be->cookie_maxlife) {
5393 /* emit first_date, which is either the original one or
5394 * the current date.
5395 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5396 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5397 s30tob64(txn->cookie_first_date ?
5398 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5399 (date.tv_sec+3) >> 2, trash.str + trash.len);
5400 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5401 }
5402 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5403 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5404 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5405
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5406 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5407 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5408
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5409 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5410 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5411
5412 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5413 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5414
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5415 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5416 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5417
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5418 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5419 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5420 /* the server did not change, only the date was updated */
5421 txn->flags |= TX_SCK_UPDATED;
5422 else
5423 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5424
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5425 /* Here, we will tell an eventual cache on the client side that we don't
5426 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5427 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5428 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5429 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5430 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5431
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5432 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5433
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5434 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5435 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5436 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5437 }
5438 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5439
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5440 /*
5441 * 7: check if result will be cacheable with a cookie.
5442 * We'll block the response if security checks have caught
5443 * nasty things such as a cacheable cookie.
5444 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5445 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5446 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5447 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5448
5449 /* we're in presence of a cacheable response containing
5450 * a set-cookie header. We'll block it as requested by
5451 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5452 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5453 if (objt_server(t->target))
5454 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5455
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5456 t->be->be_counters.denied_resp++;
5457 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5458 if (t->listener->counters)
5459 t->listener->counters->denied_resp++;
5460
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5461 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5462 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5463 send_log(t->be, LOG_ALERT,
5464 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5465 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5466 goto return_srv_prx_502;
5467 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5468
5469 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5470 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5471 * If an "Upgrade" token is found, the header is left untouched in order
5472 * not to have to deal with some client bugs : some of them fail an upgrade
5473 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5474 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5475 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5476 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5477 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5478 unsigned int want_flags = 0;
5479
5480 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5481 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5482 /* we want a keep-alive response here. Keep-alive header
5483 * required if either side is not 1.1.
5484 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5485 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5486 want_flags |= TX_CON_KAL_SET;
5487 }
5488 else {
5489 /* we want a close response here. Close header required if
5490 * the server is 1.1, regardless of the client.
5491 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5492 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5493 want_flags |= TX_CON_CLO_SET;
5494 }
5495
5496 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5497 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5498 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5499
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5500 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5501 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5502 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5503 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5504
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5505 /*************************************************************
5506 * OK, that's finished for the headers. We have done what we *
5507 * could. Let's switch to the DATA state. *
5508 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5509
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5510 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5511
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5512 /* if the user wants to log as soon as possible, without counting
5513 * bytes from the server, then this is the right moment. We have
5514 * to temporarily assign bytes_out to log what we currently have.
5515 */
5516 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5517 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5518 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5519 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5520 t->logs.bytes_out = 0;
5521 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5522
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5523 /* Note: we must not try to cheat by jumping directly to DATA,
5524 * otherwise we would not let the client side wake up.
5525 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5526
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5527 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5528 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5529 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5530}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5531
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5532/* This function is an analyser which forwards response body (including chunk
5533 * sizes if any). It is called as soon as we must forward, even if we forward
5534 * zero byte. The only situation where it must not be called is when we're in
5535 * tunnel mode and we want to forward till the close. It's used both to forward
5536 * remaining data and to resync after end of body. It expects the msg_state to
5537 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5538 * 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]5539 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5540 * bytes of pending data + the headers if not already done (between sol and sov).
5541 * It eventually adjusts sol to match sov after the data in between have been sent.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5542 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5543int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5544{
5545 struct http_txn *txn = &s->txn;
5546 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5547 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5548 static struct buffer *tmpbuf = NULL;
5549 int compressing = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5550
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5551 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5552 return 0;
5553
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5554 if ((res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5555 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5556 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5557 /* Output closed while we were sending data. We must abort and
5558 * wake the other side up.
5559 */
5560 msg->msg_state = HTTP_MSG_ERROR;
5561 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5562 return 1;
5563 }
5564
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5565 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5566 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5567
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5568 /* this is the first time we need the compression buffer */
5569 if (s->comp_algo != NULL && tmpbuf == NULL) {
5570 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5571 goto aborted_xfer; /* no memory */
5572 }
5573
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5574 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5575 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5576 * rep->buf.p still points to the beginning of the message and msg->sol
5577 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5578 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5579 channel_forward(res, msg->sov);
5580 msg->next = 0;
5581 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5582
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5583 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5584 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5585 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5586 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5587 }
5588
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5589 if (s->comp_algo != NULL) {
5590 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5591 if (ret < 0)
5592 goto missing_data; /* not enough spaces in buffers */
5593 compressing = 1;
5594 }
5595
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5596 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5597 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5598 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5599 if (s->comp_algo == NULL) {
5600 bytes = msg->sov - msg->sol;
5601 if (msg->chunk_len || bytes) {
5602 msg->sol = msg->sov;
5603 msg->next -= bytes; /* will be forwarded */
5604 msg->chunk_len += bytes;
5605 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5606 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5607 }
5608
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5609 if (msg->msg_state == HTTP_MSG_DATA) {
5610 /* must still forward */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5611 if (compressing)
5612 http_compression_buffer_add_data(s, res->buf, tmpbuf);
5613
5614 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5615 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5616
5617 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5618 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5619 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5620 else
5621 msg->msg_state = HTTP_MSG_DONE;
5622 }
5623 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5624 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5625 * set ->sov and ->next to point to the body and switch to DATA or
5626 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5627 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5628 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5629
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5630 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5631 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5632 else if (ret < 0) {
5633 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5634 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]5635 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5636 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5637 /* skipping data if we are in compression mode */
5638 if (compressing && msg->chunk_len > 0) {
5639 b_adv(res->buf, msg->next);
5640 msg->next = 0;
5641 msg->sov = 0;
5642 msg->sol = 0;
5643 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5644 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5645 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5646 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5647 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5648 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5649
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5650 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5651 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5652 else if (ret < 0) {
5653 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5654 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5655 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5656 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5657 /* skipping data in buffer for compression */
5658 if (compressing) {
5659 b_adv(res->buf, msg->next);
5660 msg->next = 0;
5661 msg->sov = 0;
5662 msg->sol = 0;
5663 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5664 /* we're in MSG_CHUNK_SIZE now */
5665 }
5666 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5667 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5668
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5669 if (ret == 0)
5670 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5671 else if (ret < 0) {
5672 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5673 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]5674 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5675 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5676 if (compressing) {
5677 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5678 compressing = 0;
5679 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5680 /* we're in HTTP_MSG_DONE now */
5681 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5682 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5683 int old_state = msg->msg_state;
5684
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5685 if (compressing) {
5686 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5687 compressing = 0;
5688 }
5689
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5690 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5691 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5692 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5693 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5694 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5695 if (http_resync_states(s)) {
5696 http_silent_debug(__LINE__, s);
5697 /* some state changes occurred, maybe the analyser
5698 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5699 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5700 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5701 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5702 /* response errors are most likely due to
5703 * the client aborting the transfer.
5704 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5705 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5706 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5707 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5708 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5709 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5710 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5711 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5712 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5713 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5714 }
5715 }
5716
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5717 missing_data:
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5718 if (compressing) {
5719 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5720 compressing = 0;
5721 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5722 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5723 if (res->flags & CF_SHUTR) {
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5724 if (!(s->flags & SN_ERR_MASK))
5725 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5726 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5727 if (objt_server(s->target))
5728 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5729 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5730 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5731
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5732 if (res->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5733 goto aborted_xfer;
5734
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5735 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5736 if (!s->req->analysers)
5737 goto return_bad_res;
5738
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5739 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5740 if (s->comp_algo == NULL) {
5741 bytes = msg->sov - msg->sol;
5742 if (msg->chunk_len || bytes) {
5743 msg->sol = msg->sov;
5744 msg->next -= bytes; /* will be forwarded */
5745 msg->chunk_len += bytes;
5746 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5747 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5748 }
5749
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5750 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5751 * chunks even if the server has closed, so we don't want to set CF_DONTCLOSE.
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5752 * Similarly, with keep-alive on the client side, we don't want to forward a
5753 * close.
5754 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5755 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5756 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5757 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5758 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5759
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5760 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5761 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]5762 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5763 * modes are already handled by the stream sock layer. We must not do
5764 * this in content-length mode because it could present the MSG_MORE
5765 * flag with the last block of forwarded data, which would cause an
5766 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5767 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5768 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5769 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5770
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5771 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5772 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5773 return 0;
5774
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5775 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5776 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5777 if (objt_server(s->target))
5778 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5779
5780 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5781 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5782 /* don't send any error message as we're in the body */
5783 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5784 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5785 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5786 if (objt_server(s->target))
5787 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5788
5789 if (!(s->flags & SN_ERR_MASK))
5790 s->flags |= SN_ERR_PRXCOND;
5791 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5792 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5793 return 0;
5794
5795 aborted_xfer:
5796 txn->rsp.msg_state = HTTP_MSG_ERROR;
5797 /* don't send any error message as we're in the body */
5798 stream_int_retnclose(res->cons, NULL);
5799 res->analysers = 0;
5800 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5801
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5802 s->fe->fe_counters.cli_aborts++;
5803 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5804 if (objt_server(s->target))
5805 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5806
5807 if (!(s->flags & SN_ERR_MASK))
5808 s->flags |= SN_ERR_CLICL;
5809 if (!(s->flags & SN_FINST_MASK))
5810 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5811 return 0;
5812}
5813
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5814/* Iterate the same filter through all request headers.
5815 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5816 * Since it can manage the switch to another backend, it updates the per-proxy
5817 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5818 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5819int apply_filter_to_req_headers(struct session *t, struct channel *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5820{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5821 char term;
5822 char *cur_ptr, *cur_end, *cur_next;
5823 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5824 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5825 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5826 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5827
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5828 last_hdr = 0;
5829
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5830 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5831 old_idx = 0;
5832
5833 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5834 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5835 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5836 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5837 (exp->action == ACT_ALLOW ||
5838 exp->action == ACT_DENY ||
5839 exp->action == ACT_TARPIT))
5840 return 0;
5841
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5842 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5843 if (!cur_idx)
5844 break;
5845
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5846 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5847 cur_ptr = cur_next;
5848 cur_end = cur_ptr + cur_hdr->len;
5849 cur_next = cur_end + cur_hdr->cr + 1;
5850
5851 /* Now we have one header between cur_ptr and cur_end,
5852 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5853 */
5854
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5855 /* The annoying part is that pattern matching needs
5856 * that we modify the contents to null-terminate all
5857 * strings before testing them.
5858 */
5859
5860 term = *cur_end;
5861 *cur_end = '\0';
5862
5863 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5864 switch (exp->action) {
5865 case ACT_SETBE:
5866 /* It is not possible to jump a second time.
5867 * FIXME: should we return an HTTP/500 here so that
5868 * the admin knows there's a problem ?
5869 */
5870 if (t->be != t->fe)
5871 break;
5872
5873 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5874 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5875 last_hdr = 1;
5876 break;
5877
5878 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5879 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5880 last_hdr = 1;
5881 break;
5882
5883 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5884 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5885 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5886
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5887 t->fe->fe_counters.denied_req++;
5888 if (t->fe != t->be)
5889 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5890 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5891 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5892
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5893 break;
5894
5895 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5896 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5897 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5898
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5899 t->fe->fe_counters.denied_req++;
5900 if (t->fe != t->be)
5901 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5902 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5903 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5904
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5905 break;
5906
5907 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5908 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
5909 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5910 /* FIXME: if the user adds a newline in the replacement, the
5911 * index will not be recalculated for now, and the new line
5912 * will not be counted as a new header.
5913 */
5914
5915 cur_end += delta;
5916 cur_next += delta;
5917 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5918 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5919 break;
5920
5921 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5922 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5923 cur_next += delta;
5924
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5925 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5926 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5927 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5928 cur_hdr->len = 0;
5929 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5930 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5931 break;
5932
5933 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5934 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5935 if (cur_end)
5936 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5937
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5938 /* keep the link from this header to next one in case of later
5939 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5940 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5941 old_idx = cur_idx;
5942 }
5943 return 0;
5944}
5945
5946
5947/* Apply the filter to the request line.
5948 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5949 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5950 * Since it can manage the switch to another backend, it updates the per-proxy
5951 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5952 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5953int apply_filter_to_req_line(struct session *t, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5954{
5955 char term;
5956 char *cur_ptr, *cur_end;
5957 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5958 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5959 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5960
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5961 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5962 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5963 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5964 (exp->action == ACT_ALLOW ||
5965 exp->action == ACT_DENY ||
5966 exp->action == ACT_TARPIT))
5967 return 0;
5968 else if (exp->action == ACT_REMOVE)
5969 return 0;
5970
5971 done = 0;
5972
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5973 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5974 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5975
5976 /* Now we have the request line between cur_ptr and cur_end */
5977
5978 /* The annoying part is that pattern matching needs
5979 * that we modify the contents to null-terminate all
5980 * strings before testing them.
5981 */
5982
5983 term = *cur_end;
5984 *cur_end = '\0';
5985
5986 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5987 switch (exp->action) {
5988 case ACT_SETBE:
5989 /* It is not possible to jump a second time.
5990 * FIXME: should we return an HTTP/500 here so that
5991 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5992 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5993 if (t->be != t->fe)
5994 break;
5995
5996 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5997 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5998 done = 1;
5999 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6000
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6001 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6002 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6003 done = 1;
6004 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6005
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6006 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6007 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6008
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6009 t->fe->fe_counters.denied_req++;
6010 if (t->fe != t->be)
6011 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6012 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6013 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6014
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6015 done = 1;
6016 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6017
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6018 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6019 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6020
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6021 t->fe->fe_counters.denied_req++;
6022 if (t->fe != t->be)
6023 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6024 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6025 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6026
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6027 done = 1;
6028 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6029
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6030 case ACT_REPLACE:
6031 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6032 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6033 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6034 /* FIXME: if the user adds a newline in the replacement, the
6035 * index will not be recalculated for now, and the new line
6036 * will not be counted as a new header.
6037 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6038
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6039 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6040 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6041 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6042 HTTP_MSG_RQMETH,
6043 cur_ptr, cur_end + 1,
6044 NULL, NULL);
6045 if (unlikely(!cur_end))
6046 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6047
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6048 /* we have a full request and we know that we have either a CR
6049 * or an LF at <ptr>.
6050 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6051 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6052 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]6053 /* there is no point trying this regex on headers */
6054 return 1;
6055 }
6056 }
6057 *cur_end = term; /* restore the string terminator */
6058 return done;
6059}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6060
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6061
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6062
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6063/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6064 * 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]6065 * 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]6066 * unparsable request. Since it can manage the switch to another backend, it
6067 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6068 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6069int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6070{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6071 struct http_txn *txn = &s->txn;
6072 struct hdr_exp *exp;
6073
6074 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6075 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6077 /*
6078 * The interleaving of transformations and verdicts
6079 * makes it difficult to decide to continue or stop
6080 * the evaluation.
6081 */
6082
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6083 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6084 break;
6085
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6086 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6087 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6088 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6089 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6090
6091 /* if this filter had a condition, evaluate it now and skip to
6092 * next filter if the condition does not match.
6093 */
6094 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6095 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]6096 ret = acl_pass(ret);
6097 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6098 ret = !ret;
6099
6100 if (!ret)
6101 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6102 }
6103
6104 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6105 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6106 if (unlikely(ret < 0))
6107 return -1;
6108
6109 if (likely(ret == 0)) {
6110 /* The filter did not match the request, it can be
6111 * iterated through all headers.
6112 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6113 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6114 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6115 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6116 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6117}
6118
6119
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6120
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6121/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6122 * Try to retrieve the server associated to the appsession.
6123 * If the server is found, it's assigned to the session.
6124 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6125void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6126 struct http_txn *txn = &t->txn;
6127 appsess *asession = NULL;
6128 char *sessid_temp = NULL;
6129
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6130 if (len > t->be->appsession_len) {
6131 len = t->be->appsession_len;
6132 }
6133
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6134 if (t->be->options2 & PR_O2_AS_REQL) {
6135 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6136 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6137 /* 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]6138 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6139 }
6140
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6141 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6142 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6143 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6144 return;
6145 }
6146
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6147 memcpy(txn->sessid, buf, len);
6148 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6149 }
6150
6151 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6152 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6153 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6154 return;
6155 }
6156
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6157 memcpy(sessid_temp, buf, len);
6158 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6159
6160 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6161 /* free previously allocated memory */
6162 pool_free2(apools.sessid, sessid_temp);
6163
6164 if (asession != NULL) {
6165 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6166 if (!(t->be->options2 & PR_O2_AS_REQL))
6167 asession->request_count++;
6168
6169 if (asession->serverid != NULL) {
6170 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6171
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6172 while (srv) {
6173 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6174 if ((srv->state & SRV_RUNNING) ||
6175 (t->be->options & PR_O_PERSIST) ||
6176 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6177 /* we found the server and it's usable */
6178 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6179 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6180 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6181 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6182
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6183 break;
6184 } else {
6185 txn->flags &= ~TX_CK_MASK;
6186 txn->flags |= TX_CK_DOWN;
6187 }
6188 }
6189 srv = srv->next;
6190 }
6191 }
6192 }
6193}
6194
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6195/* Find the end of a cookie value contained between <s> and <e>. It works the
6196 * same way as with headers above except that the semi-colon also ends a token.
6197 * See RFC2965 for more information. Note that it requires a valid header to
6198 * return a valid result.
6199 */
6200char *find_cookie_value_end(char *s, const char *e)
6201{
6202 int quoted, qdpair;
6203
6204 quoted = qdpair = 0;
6205 for (; s < e; s++) {
6206 if (qdpair) qdpair = 0;
6207 else if (quoted) {
6208 if (*s == '\\') qdpair = 1;
6209 else if (*s == '"') quoted = 0;
6210 }
6211 else if (*s == '"') quoted = 1;
6212 else if (*s == ',' || *s == ';') return s;
6213 }
6214 return s;
6215}
6216
6217/* Delete a value in a header between delimiters <from> and <next> in buffer
6218 * <buf>. The number of characters displaced is returned, and the pointer to
6219 * the first delimiter is updated if required. The function tries as much as
6220 * possible to respect the following principles :
6221 * - replace <from> delimiter by the <next> one unless <from> points to a
6222 * colon, in which case <next> is simply removed
6223 * - set exactly one space character after the new first delimiter, unless
6224 * there are not enough characters in the block being moved to do so.
6225 * - remove unneeded spaces before the previous delimiter and after the new
6226 * one.
6227 *
6228 * It is the caller's responsibility to ensure that :
6229 * - <from> points to a valid delimiter or the colon ;
6230 * - <next> points to a valid delimiter or the final CR/LF ;
6231 * - there are non-space chars before <from> ;
6232 * - there is a CR/LF at or after <next>.
6233 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6234int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6235{
6236 char *prev = *from;
6237
6238 if (*prev == ':') {
6239 /* We're removing the first value, preserve the colon and add a
6240 * space if possible.
6241 */
6242 if (!http_is_crlf[(unsigned char)*next])
6243 next++;
6244 prev++;
6245 if (prev < next)
6246 *prev++ = ' ';
6247
6248 while (http_is_spht[(unsigned char)*next])
6249 next++;
6250 } else {
6251 /* Remove useless spaces before the old delimiter. */
6252 while (http_is_spht[(unsigned char)*(prev-1)])
6253 prev--;
6254 *from = prev;
6255
6256 /* copy the delimiter and if possible a space if we're
6257 * not at the end of the line.
6258 */
6259 if (!http_is_crlf[(unsigned char)*next]) {
6260 *prev++ = *next++;
6261 if (prev + 1 < next)
6262 *prev++ = ' ';
6263 while (http_is_spht[(unsigned char)*next])
6264 next++;
6265 }
6266 }
6267 return buffer_replace2(buf, prev, next, NULL, 0);
6268}
6269
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6270/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6271 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6272 * desirable to call it only when needed. This code is quite complex because
6273 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6274 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6275 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6276void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6277{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6278 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6279 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6280 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6281 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6282 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6283
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6284 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6285 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6286 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6287
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6288 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6289 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6290 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6291
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6292 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6293 hdr_beg = hdr_next;
6294 hdr_end = hdr_beg + cur_hdr->len;
6295 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6296
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6297 /* We have one full header between hdr_beg and hdr_end, and the
6298 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6299 * "Cookie:" headers.
6300 */
6301
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6302 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6303 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6304 old_idx = cur_idx;
6305 continue;
6306 }
6307
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6308 del_from = NULL; /* nothing to be deleted */
6309 preserve_hdr = 0; /* assume we may kill the whole header */
6310
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6311 /* Now look for cookies. Conforming to RFC2109, we have to support
6312 * attributes whose name begin with a '$', and associate them with
6313 * the right cookie, if we want to delete this cookie.
6314 * So there are 3 cases for each cookie read :
6315 * 1) it's a special attribute, beginning with a '$' : ignore it.
6316 * 2) it's a server id cookie that we *MAY* want to delete : save
6317 * some pointers on it (last semi-colon, beginning of cookie...)
6318 * 3) it's an application cookie : we *MAY* have to delete a previous
6319 * "special" cookie.
6320 * At the end of loop, if a "special" cookie remains, we may have to
6321 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6322 * *MUST* delete it.
6323 *
6324 * Note: RFC2965 is unclear about the processing of spaces around
6325 * the equal sign in the ATTR=VALUE form. A careful inspection of
6326 * the RFC explicitly allows spaces before it, and not within the
6327 * tokens (attrs or values). An inspection of RFC2109 allows that
6328 * too but section 10.1.3 lets one think that spaces may be allowed
6329 * after the equal sign too, resulting in some (rare) buggy
6330 * implementations trying to do that. So let's do what servers do.
6331 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6332 * allowed quoted strings in values, with any possible character
6333 * after a backslash, including control chars and delimitors, which
6334 * causes parsing to become ambiguous. Browsers also allow spaces
6335 * within values even without quotes.
6336 *
6337 * We have to keep multiple pointers in order to support cookie
6338 * removal at the beginning, middle or end of header without
6339 * corrupting the header. All of these headers are valid :
6340 *
6341 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6342 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6343 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6344 * | | | | | | | | |
6345 * | | | | | | | | hdr_end <--+
6346 * | | | | | | | +--> next
6347 * | | | | | | +----> val_end
6348 * | | | | | +-----------> val_beg
6349 * | | | | +--------------> equal
6350 * | | | +----------------> att_end
6351 * | | +---------------------> att_beg
6352 * | +--------------------------> prev
6353 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6354 */
6355
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6356 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6357 /* Iterate through all cookies on this line */
6358
6359 /* find att_beg */
6360 att_beg = prev + 1;
6361 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6362 att_beg++;
6363
6364 /* find att_end : this is the first character after the last non
6365 * space before the equal. It may be equal to hdr_end.
6366 */
6367 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6368
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6369 while (equal < hdr_end) {
6370 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6371 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6372 if (http_is_spht[(unsigned char)*equal++])
6373 continue;
6374 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6375 }
6376
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6377 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6378 * is between <att_beg> and <equal>, both may be identical.
6379 */
6380
6381 /* look for end of cookie if there is an equal sign */
6382 if (equal < hdr_end && *equal == '=') {
6383 /* look for the beginning of the value */
6384 val_beg = equal + 1;
6385 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6386 val_beg++;
6387
6388 /* find the end of the value, respecting quotes */
6389 next = find_cookie_value_end(val_beg, hdr_end);
6390
6391 /* make val_end point to the first white space or delimitor after the value */
6392 val_end = next;
6393 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6394 val_end--;
6395 } else {
6396 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6397 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6398
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6399 /* We have nothing to do with attributes beginning with '$'. However,
6400 * they will automatically be removed if a header before them is removed,
6401 * since they're supposed to be linked together.
6402 */
6403 if (*att_beg == '$')
6404 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6405
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6406 /* Ignore cookies with no equal sign */
6407 if (equal == next) {
6408 /* This is not our cookie, so we must preserve it. But if we already
6409 * scheduled another cookie for removal, we cannot remove the
6410 * complete header, but we can remove the previous block itself.
6411 */
6412 preserve_hdr = 1;
6413 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6414 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6415 val_end += delta;
6416 next += delta;
6417 hdr_end += delta;
6418 hdr_next += delta;
6419 cur_hdr->len += delta;
6420 http_msg_move_end(&txn->req, delta);
6421 prev = del_from;
6422 del_from = NULL;
6423 }
6424 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6425 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6426
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6427 /* if there are spaces around the equal sign, we need to
6428 * strip them otherwise we'll get trouble for cookie captures,
6429 * or even for rewrites. Since this happens extremely rarely,
6430 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6431 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6432 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6433 int stripped_before = 0;
6434 int stripped_after = 0;
6435
6436 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6437 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6438 equal += stripped_before;
6439 val_beg += stripped_before;
6440 }
6441
6442 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6443 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6444 val_beg += stripped_after;
6445 stripped_before += stripped_after;
6446 }
6447
6448 val_end += stripped_before;
6449 next += stripped_before;
6450 hdr_end += stripped_before;
6451 hdr_next += stripped_before;
6452 cur_hdr->len += stripped_before;
6453 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6454 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6455 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6456
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6457 /* First, let's see if we want to capture this cookie. We check
6458 * that we don't already have a client side cookie, because we
6459 * can only capture one. Also as an optimisation, we ignore
6460 * cookies shorter than the declared name.
6461 */
6462 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6463 (val_end - att_beg >= t->fe->capture_namelen) &&
6464 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6465 int log_len = val_end - att_beg;
6466
6467 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6468 Alert("HTTP logging : out of memory.\n");
6469 } else {
6470 if (log_len > t->fe->capture_len)
6471 log_len = t->fe->capture_len;
6472 memcpy(txn->cli_cookie, att_beg, log_len);
6473 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6474 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6475 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6476
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6477 /* Persistence cookies in passive, rewrite or insert mode have the
6478 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6479 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6480 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6481 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6482 * For cookies in prefix mode, the form is :
6483 *
6484 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6485 */
6486 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6487 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6488 struct server *srv = t->be->srv;
6489 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6490
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6491 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6492 * have the server ID between val_beg and delim, and the original cookie between
6493 * delim+1 and val_end. Otherwise, delim==val_end :
6494 *
6495 * Cookie: NAME=SRV; # in all but prefix modes
6496 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6497 * | || || | |+-> next
6498 * | || || | +--> val_end
6499 * | || || +---------> delim
6500 * | || |+------------> val_beg
6501 * | || +-------------> att_end = equal
6502 * | |+-----------------> att_beg
6503 * | +------------------> prev
6504 * +-------------------------> hdr_beg
6505 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6506
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6507 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6508 for (delim = val_beg; delim < val_end; delim++)
6509 if (*delim == COOKIE_DELIM)
6510 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6511 } else {
6512 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6513 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6514 /* Now check if the cookie contains a date field, which would
6515 * appear after a vertical bar ('|') just after the server name
6516 * and before the delimiter.
6517 */
6518 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6519 if (vbar1) {
6520 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6521 * right is the last seen date. It is a base64 encoded
6522 * 30-bit value representing the UNIX date since the
6523 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6524 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6525 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6526 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6527 if (val_end - vbar1 >= 5) {
6528 val = b64tos30(vbar1);
6529 if (val > 0)
6530 txn->cookie_last_date = val << 2;
6531 }
6532 /* look for a second vertical bar */
6533 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6534 if (vbar1 && (val_end - vbar1 > 5)) {
6535 val = b64tos30(vbar1 + 1);
6536 if (val > 0)
6537 txn->cookie_first_date = val << 2;
6538 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6539 }
6540 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6541
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6542 /* if the cookie has an expiration date and the proxy wants to check
6543 * it, then we do that now. We first check if the cookie is too old,
6544 * then only if it has expired. We detect strict overflow because the
6545 * time resolution here is not great (4 seconds). Cookies with dates
6546 * in the future are ignored if their offset is beyond one day. This
6547 * allows an admin to fix timezone issues without expiring everyone
6548 * and at the same time avoids keeping unwanted side effects for too
6549 * long.
6550 */
6551 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6552 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6553 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6554 txn->flags &= ~TX_CK_MASK;
6555 txn->flags |= TX_CK_OLD;
6556 delim = val_beg; // let's pretend we have not found the cookie
6557 txn->cookie_first_date = 0;
6558 txn->cookie_last_date = 0;
6559 }
6560 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6561 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6562 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6563 txn->flags &= ~TX_CK_MASK;
6564 txn->flags |= TX_CK_EXPIRED;
6565 delim = val_beg; // let's pretend we have not found the cookie
6566 txn->cookie_first_date = 0;
6567 txn->cookie_last_date = 0;
6568 }
6569
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6570 /* Here, we'll look for the first running server which supports the cookie.
6571 * This allows to share a same cookie between several servers, for example
6572 * to dedicate backup servers to specific servers only.
6573 * However, to prevent clients from sticking to cookie-less backup server
6574 * when they have incidentely learned an empty cookie, we simply ignore
6575 * empty cookies and mark them as invalid.
6576 * The same behaviour is applied when persistence must be ignored.
6577 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6578 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6579 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6580
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6581 while (srv) {
6582 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6583 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6584 if ((srv->state & SRV_RUNNING) ||
6585 (t->be->options & PR_O_PERSIST) ||
6586 (t->flags & SN_FORCE_PRST)) {
6587 /* we found the server and we can use it */
6588 txn->flags &= ~TX_CK_MASK;
6589 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6590 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6591 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6592 break;
6593 } else {
6594 /* we found a server, but it's down,
6595 * mark it as such and go on in case
6596 * another one is available.
6597 */
6598 txn->flags &= ~TX_CK_MASK;
6599 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6600 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6601 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6602 srv = srv->next;
6603 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6604
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6605 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6606 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6607 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6608 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6609 txn->flags |= TX_CK_UNUSED;
6610 else
6611 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6612 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6613
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6614 /* depending on the cookie mode, we may have to either :
6615 * - delete the complete cookie if we're in insert+indirect mode, so that
6616 * the server never sees it ;
6617 * - remove the server id from the cookie value, and tag the cookie as an
6618 * application cookie so that it does not get accidentely removed later,
6619 * if we're in cookie prefix mode
6620 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6621 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6622 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6623
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6624 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6625 val_end += delta;
6626 next += delta;
6627 hdr_end += delta;
6628 hdr_next += delta;
6629 cur_hdr->len += delta;
6630 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6631
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6632 del_from = NULL;
6633 preserve_hdr = 1; /* we want to keep this cookie */
6634 }
6635 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6636 (t->be->ck_opts & (PR_CK_INS | PR_CK_IND)) == (PR_CK_INS | PR_CK_IND)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6637 del_from = prev;
6638 }
6639 } else {
6640 /* This is not our cookie, so we must preserve it. But if we already
6641 * scheduled another cookie for removal, we cannot remove the
6642 * complete header, but we can remove the previous block itself.
6643 */
6644 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6645
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6646 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6647 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6648 if (att_beg >= del_from)
6649 att_beg += delta;
6650 if (att_end >= del_from)
6651 att_end += delta;
6652 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6653 val_end += delta;
6654 next += delta;
6655 hdr_end += delta;
6656 hdr_next += delta;
6657 cur_hdr->len += delta;
6658 http_msg_move_end(&txn->req, delta);
6659 prev = del_from;
6660 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6661 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6662 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6663
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6664 /* Look for the appsession cookie unless persistence must be ignored */
6665 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6666 int cmp_len, value_len;
6667 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6668
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6669 if (t->be->options2 & PR_O2_AS_PFX) {
6670 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6671 value_begin = att_beg + t->be->appsession_name_len;
6672 value_len = val_end - att_beg - t->be->appsession_name_len;
6673 } else {
6674 cmp_len = att_end - att_beg;
6675 value_begin = val_beg;
6676 value_len = val_end - val_beg;
6677 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6678
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6679 /* let's see if the cookie is our appcookie */
6680 if (cmp_len == t->be->appsession_name_len &&
6681 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6682 manage_client_side_appsession(t, value_begin, value_len);
6683 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6684 }
6685
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6686 /* continue with next cookie on this header line */
6687 att_beg = next;
6688 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6689
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6690 /* There are no more cookies on this line.
6691 * We may still have one (or several) marked for deletion at the
6692 * end of the line. We must do this now in two ways :
6693 * - if some cookies must be preserved, we only delete from the
6694 * mark to the end of line ;
6695 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6696 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6697 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6698 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6699 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6700 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6701 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6702 cur_hdr->len += delta;
6703 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6704 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6705
6706 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6707 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6708 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6709 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6710 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6711 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6712 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6713 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6714 }
6715
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6716 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6717 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6718 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6719}
6720
6721
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6722/* Iterate the same filter through all response headers contained in <rtr>.
6723 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6724 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6725int apply_filter_to_resp_headers(struct session *t, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6726{
6727 char term;
6728 char *cur_ptr, *cur_end, *cur_next;
6729 int cur_idx, old_idx, last_hdr;
6730 struct http_txn *txn = &t->txn;
6731 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6732 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6733
6734 last_hdr = 0;
6735
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6736 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6737 old_idx = 0;
6738
6739 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6740 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6741 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6742 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6743 (exp->action == ACT_ALLOW ||
6744 exp->action == ACT_DENY))
6745 return 0;
6746
6747 cur_idx = txn->hdr_idx.v[old_idx].next;
6748 if (!cur_idx)
6749 break;
6750
6751 cur_hdr = &txn->hdr_idx.v[cur_idx];
6752 cur_ptr = cur_next;
6753 cur_end = cur_ptr + cur_hdr->len;
6754 cur_next = cur_end + cur_hdr->cr + 1;
6755
6756 /* Now we have one header between cur_ptr and cur_end,
6757 * and the next header starts at cur_next.
6758 */
6759
6760 /* The annoying part is that pattern matching needs
6761 * that we modify the contents to null-terminate all
6762 * strings before testing them.
6763 */
6764
6765 term = *cur_end;
6766 *cur_end = '\0';
6767
6768 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6769 switch (exp->action) {
6770 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6771 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6772 last_hdr = 1;
6773 break;
6774
6775 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6776 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6777 last_hdr = 1;
6778 break;
6779
6780 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6781 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6782 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6783 /* FIXME: if the user adds a newline in the replacement, the
6784 * index will not be recalculated for now, and the new line
6785 * will not be counted as a new header.
6786 */
6787
6788 cur_end += delta;
6789 cur_next += delta;
6790 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6791 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6792 break;
6793
6794 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6795 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6796 cur_next += delta;
6797
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6798 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6799 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6800 txn->hdr_idx.used--;
6801 cur_hdr->len = 0;
6802 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6803 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6804 break;
6805
6806 }
6807 }
6808 if (cur_end)
6809 *cur_end = term; /* restore the string terminator */
6810
6811 /* keep the link from this header to next one in case of later
6812 * removal of next header.
6813 */
6814 old_idx = cur_idx;
6815 }
6816 return 0;
6817}
6818
6819
6820/* Apply the filter to the status line in the response buffer <rtr>.
6821 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6822 * or -1 if a replacement resulted in an invalid status line.
6823 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6824int apply_filter_to_sts_line(struct session *t, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6825{
6826 char term;
6827 char *cur_ptr, *cur_end;
6828 int done;
6829 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6830 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6831
6832
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6833 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6834 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6835 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6836 (exp->action == ACT_ALLOW ||
6837 exp->action == ACT_DENY))
6838 return 0;
6839 else if (exp->action == ACT_REMOVE)
6840 return 0;
6841
6842 done = 0;
6843
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6844 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6845 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6846
6847 /* Now we have the status line between cur_ptr and cur_end */
6848
6849 /* The annoying part is that pattern matching needs
6850 * that we modify the contents to null-terminate all
6851 * strings before testing them.
6852 */
6853
6854 term = *cur_end;
6855 *cur_end = '\0';
6856
6857 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6858 switch (exp->action) {
6859 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6860 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6861 done = 1;
6862 break;
6863
6864 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6865 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6866 done = 1;
6867 break;
6868
6869 case ACT_REPLACE:
6870 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6871 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6872 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6873 /* FIXME: if the user adds a newline in the replacement, the
6874 * index will not be recalculated for now, and the new line
6875 * will not be counted as a new header.
6876 */
6877
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6878 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6879 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6880 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6881 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6882 cur_ptr, cur_end + 1,
6883 NULL, NULL);
6884 if (unlikely(!cur_end))
6885 return -1;
6886
6887 /* we have a full respnse and we know that we have either a CR
6888 * or an LF at <ptr>.
6889 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6890 txn->status = strl2ui(rtr->buf->p + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6891 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]6892 /* there is no point trying this regex on headers */
6893 return 1;
6894 }
6895 }
6896 *cur_end = term; /* restore the string terminator */
6897 return done;
6898}
6899
6900
6901
6902/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6903 * 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]6904 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6905 * unparsable response.
6906 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6907int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6908{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6909 struct http_txn *txn = &s->txn;
6910 struct hdr_exp *exp;
6911
6912 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6913 int ret;
6914
6915 /*
6916 * The interleaving of transformations and verdicts
6917 * makes it difficult to decide to continue or stop
6918 * the evaluation.
6919 */
6920
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6921 if (txn->flags & TX_SVDENY)
6922 break;
6923
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6924 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6925 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6926 exp->action == ACT_PASS)) {
6927 exp = exp->next;
6928 continue;
6929 }
6930
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6931 /* if this filter had a condition, evaluate it now and skip to
6932 * next filter if the condition does not match.
6933 */
6934 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6935 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]6936 ret = acl_pass(ret);
6937 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6938 ret = !ret;
6939 if (!ret)
6940 continue;
6941 }
6942
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6943 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6944 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6945 if (unlikely(ret < 0))
6946 return -1;
6947
6948 if (likely(ret == 0)) {
6949 /* The filter did not match the response, it can be
6950 * iterated through all headers.
6951 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6952 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6953 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6954 }
6955 return 0;
6956}
6957
6958
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6959/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6960 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6961 * desirable to call it only when needed. This function is also used when we
6962 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6963 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6964void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6965{
6966 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6967 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6968 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6969 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6970 char *hdr_beg, *hdr_end, *hdr_next;
6971 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6972
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6973 /* Iterate through the headers.
6974 * we start with the start line.
6975 */
6976 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6977 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6978
6979 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6980 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6981 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6982
6983 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6984 hdr_beg = hdr_next;
6985 hdr_end = hdr_beg + cur_hdr->len;
6986 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6987
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6988 /* We have one full header between hdr_beg and hdr_end, and the
6989 * next header starts at hdr_next. We're only interested in
6990 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6991 */
6992
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6993 is_cookie2 = 0;
6994 prev = hdr_beg + 10;
6995 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6996 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6997 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6998 if (!val) {
6999 old_idx = cur_idx;
7000 continue;
7001 }
7002 is_cookie2 = 1;
7003 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7004 }
7005
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7006 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7007 * <prev> points to the colon.
7008 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7009 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7010
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7011 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7012 * check-cache is enabled) and we are not interested in checking
7013 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7014 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7015 if (t->be->cookie_name == NULL &&
7016 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7017 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7018 return;
7019
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7020 /* OK so now we know we have to process this response cookie.
7021 * The format of the Set-Cookie header is slightly different
7022 * from the format of the Cookie header in that it does not
7023 * support the comma as a cookie delimiter (thus the header
7024 * cannot be folded) because the Expires attribute described in
7025 * the original Netscape's spec may contain an unquoted date
7026 * with a comma inside. We have to live with this because
7027 * many browsers don't support Max-Age and some browsers don't
7028 * support quoted strings. However the Set-Cookie2 header is
7029 * clean.
7030 *
7031 * We have to keep multiple pointers in order to support cookie
7032 * removal at the beginning, middle or end of header without
7033 * corrupting the header (in case of set-cookie2). A special
7034 * pointer, <scav> points to the beginning of the set-cookie-av
7035 * fields after the first semi-colon. The <next> pointer points
7036 * either to the end of line (set-cookie) or next unquoted comma
7037 * (set-cookie2). All of these headers are valid :
7038 *
7039 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7040 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7041 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7042 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7043 * | | | | | | | | | |
7044 * | | | | | | | | +-> next hdr_end <--+
7045 * | | | | | | | +------------> scav
7046 * | | | | | | +--------------> val_end
7047 * | | | | | +--------------------> val_beg
7048 * | | | | +----------------------> equal
7049 * | | | +------------------------> att_end
7050 * | | +----------------------------> att_beg
7051 * | +------------------------------> prev
7052 * +-----------------------------------------> hdr_beg
7053 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7054
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7055 for (; prev < hdr_end; prev = next) {
7056 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7057
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7058 /* find att_beg */
7059 att_beg = prev + 1;
7060 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7061 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7062
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7063 /* find att_end : this is the first character after the last non
7064 * space before the equal. It may be equal to hdr_end.
7065 */
7066 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7067
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7068 while (equal < hdr_end) {
7069 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7070 break;
7071 if (http_is_spht[(unsigned char)*equal++])
7072 continue;
7073 att_end = equal;
7074 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7075
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7076 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7077 * is between <att_beg> and <equal>, both may be identical.
7078 */
7079
7080 /* look for end of cookie if there is an equal sign */
7081 if (equal < hdr_end && *equal == '=') {
7082 /* look for the beginning of the value */
7083 val_beg = equal + 1;
7084 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7085 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7086
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7087 /* find the end of the value, respecting quotes */
7088 next = find_cookie_value_end(val_beg, hdr_end);
7089
7090 /* make val_end point to the first white space or delimitor after the value */
7091 val_end = next;
7092 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7093 val_end--;
7094 } else {
7095 /* <equal> points to next comma, semi-colon or EOL */
7096 val_beg = val_end = next = equal;
7097 }
7098
7099 if (next < hdr_end) {
7100 /* Set-Cookie2 supports multiple cookies, and <next> points to
7101 * a colon or semi-colon before the end. So skip all attr-value
7102 * pairs and look for the next comma. For Set-Cookie, since
7103 * commas are permitted in values, skip to the end.
7104 */
7105 if (is_cookie2)
7106 next = find_hdr_value_end(next, hdr_end);
7107 else
7108 next = hdr_end;
7109 }
7110
7111 /* Now everything is as on the diagram above */
7112
7113 /* Ignore cookies with no equal sign */
7114 if (equal == val_end)
7115 continue;
7116
7117 /* If there are spaces around the equal sign, we need to
7118 * strip them otherwise we'll get trouble for cookie captures,
7119 * or even for rewrites. Since this happens extremely rarely,
7120 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7121 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7122 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7123 int stripped_before = 0;
7124 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7125
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7126 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7127 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7128 equal += stripped_before;
7129 val_beg += stripped_before;
7130 }
7131
7132 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7133 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7134 val_beg += stripped_after;
7135 stripped_before += stripped_after;
7136 }
7137
7138 val_end += stripped_before;
7139 next += stripped_before;
7140 hdr_end += stripped_before;
7141 hdr_next += stripped_before;
7142 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7143 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7144 }
7145
7146 /* First, let's see if we want to capture this cookie. We check
7147 * that we don't already have a server side cookie, because we
7148 * can only capture one. Also as an optimisation, we ignore
7149 * cookies shorter than the declared name.
7150 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7151 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7152 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7153 (val_end - att_beg >= t->fe->capture_namelen) &&
7154 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7155 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7156 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7157 Alert("HTTP logging : out of memory.\n");
7158 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7159 else {
7160 if (log_len > t->fe->capture_len)
7161 log_len = t->fe->capture_len;
7162 memcpy(txn->srv_cookie, att_beg, log_len);
7163 txn->srv_cookie[log_len] = 0;
7164 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7165 }
7166
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7167 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7168 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7169 if (!(t->flags & SN_IGNORE_PRST) &&
7170 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7171 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7172 /* assume passive cookie by default */
7173 txn->flags &= ~TX_SCK_MASK;
7174 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7175
7176 /* If the cookie is in insert mode on a known server, we'll delete
7177 * this occurrence because we'll insert another one later.
7178 * 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]7179 * a direct access.
7180 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7181 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7182 /* The "preserve" flag was set, we don't want to touch the
7183 * server's cookie.
7184 */
7185 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7186 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7187 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7188 /* this cookie must be deleted */
7189 if (*prev == ':' && next == hdr_end) {
7190 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7191 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7192 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7193 txn->hdr_idx.used--;
7194 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7195 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7196 hdr_next += delta;
7197 http_msg_move_end(&txn->rsp, delta);
7198 /* note: while both invalid now, <next> and <hdr_end>
7199 * are still equal, so the for() will stop as expected.
7200 */
7201 } else {
7202 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7203 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7204 next = prev;
7205 hdr_end += delta;
7206 hdr_next += delta;
7207 cur_hdr->len += delta;
7208 http_msg_move_end(&txn->rsp, delta);
7209 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7210 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7211 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7212 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7213 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7214 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7215 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7216 * with this server since we know it.
7217 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7218 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7219 next += delta;
7220 hdr_end += delta;
7221 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7222 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7223 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7224
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7225 txn->flags &= ~TX_SCK_MASK;
7226 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7227 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7228 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7229 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7230 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7231 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7232 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7233 next += delta;
7234 hdr_end += delta;
7235 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7236 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7237 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7238
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7239 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7240 txn->flags &= ~TX_SCK_MASK;
7241 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7242 }
7243 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7244 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7245 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7246 int cmp_len, value_len;
7247 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7248
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7249 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7250 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7251 value_begin = att_beg + t->be->appsession_name_len;
7252 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]7253 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7254 cmp_len = att_end - att_beg;
7255 value_begin = val_beg;
7256 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7257 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7258
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7259 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7260 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7261 /* free a possibly previously allocated memory */
7262 pool_free2(apools.sessid, txn->sessid);
7263
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7264 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7265 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7266 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7267 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7268 return;
7269 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7270 memcpy(txn->sessid, value_begin, value_len);
7271 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7272 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7273 }
7274 /* that's done for this cookie, check the next one on the same
7275 * line when next != hdr_end (only if is_cookie2).
7276 */
7277 }
7278 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7279 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7280 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7281
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7282 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7283 appsess *asession = NULL;
7284 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7285 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7286 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7287 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7288 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7289 Alert("Not enough Memory process_srv():asession:calloc().\n");
7290 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7291 return;
7292 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7293 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7294
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7295 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7296 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7297 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]7298 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7299 return;
7300 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7301 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7302 asession->sessid[t->be->appsession_len] = 0;
7303
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7304 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7305 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7306 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7307 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]7308 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7309 return;
7310 }
7311 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7312 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7313
7314 asession->request_count = 0;
7315 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7316 }
7317
7318 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7319 asession->request_count++;
7320 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7321}
7322
7323
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7324/*
7325 * Check if response is cacheable or not. Updates t->flags.
7326 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7327void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7328{
7329 struct http_txn *txn = &t->txn;
7330 char *p1, *p2;
7331
7332 char *cur_ptr, *cur_end, *cur_next;
7333 int cur_idx;
7334
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7335 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7336 return;
7337
7338 /* Iterate through the headers.
7339 * we start with the start line.
7340 */
7341 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7342 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7343
7344 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7345 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7346 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7347
7348 cur_hdr = &txn->hdr_idx.v[cur_idx];
7349 cur_ptr = cur_next;
7350 cur_end = cur_ptr + cur_hdr->len;
7351 cur_next = cur_end + cur_hdr->cr + 1;
7352
7353 /* We have one full header between cur_ptr and cur_end, and the
7354 * next header starts at cur_next. We're only interested in
7355 * "Cookie:" headers.
7356 */
7357
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7358 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7359 if (val) {
7360 if ((cur_end - (cur_ptr + val) >= 8) &&
7361 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7362 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7363 return;
7364 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7365 }
7366
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7367 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7368 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7369 continue;
7370
7371 /* OK, right now we know we have a cache-control header at cur_ptr */
7372
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7373 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7374
7375 if (p1 >= cur_end) /* no more info */
7376 continue;
7377
7378 /* p1 is at the beginning of the value */
7379 p2 = p1;
7380
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7381 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7382 p2++;
7383
7384 /* we have a complete value between p1 and p2 */
7385 if (p2 < cur_end && *p2 == '=') {
7386 /* we have something of the form no-cache="set-cookie" */
7387 if ((cur_end - p1 >= 21) &&
7388 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7389 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7390 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7391 continue;
7392 }
7393
7394 /* OK, so we know that either p2 points to the end of string or to a comma */
7395 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7396 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7397 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7398 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7399 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7400 return;
7401 }
7402
7403 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7404 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7405 continue;
7406 }
7407 }
7408}
7409
7410
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7411/*
7412 * Try to retrieve a known appsession in the URI, then the associated server.
7413 * If the server is found, it's assigned to the session.
7414 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7415void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7416{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7417 char *end_params, *first_param, *cur_param, *next_param;
7418 char separator;
7419 int value_len;
7420
7421 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7422
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7423 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7424 (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]7425 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7426 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7427
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7428 first_param = NULL;
7429 switch (mode) {
7430 case PR_O2_AS_M_PP:
7431 first_param = memchr(begin, ';', len);
7432 break;
7433 case PR_O2_AS_M_QS:
7434 first_param = memchr(begin, '?', len);
7435 break;
7436 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7437
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7438 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7439 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7440 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7441
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7442 switch (mode) {
7443 case PR_O2_AS_M_PP:
7444 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7445 end_params = (char *) begin + len;
7446 }
7447 separator = ';';
7448 break;
7449 case PR_O2_AS_M_QS:
7450 end_params = (char *) begin + len;
7451 separator = '&';
7452 break;
7453 default:
7454 /* unknown mode, shouldn't happen */
7455 return;
7456 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7457
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7458 cur_param = next_param = end_params;
7459 while (cur_param > first_param) {
7460 cur_param--;
7461 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7462 /* let's see if this is the appsession parameter */
7463 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7464 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7465 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7466 /* Cool... it's the right one */
7467 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7468 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7469 if (value_len > 0) {
7470 manage_client_side_appsession(t, cur_param, value_len);
7471 }
7472 break;
7473 }
7474 next_param = cur_param;
7475 }
7476 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7477#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7478 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7479 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7480#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7481}
7482
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7483/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7484 * 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]7485 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7486 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7487 * 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]7488 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7489 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7490 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7491 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7492int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7493{
7494 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7495 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7496 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7497 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7498
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7499 if (!uri_auth)
7500 return 0;
7501
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7502 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]7503 return 0;
7504
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7505 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7506 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7507
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7508 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7509 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7510 return 0;
7511
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7512 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7513 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7514 return 0;
7515
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7516 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7517 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7518 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7519 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7520 break;
7521 }
7522 h++;
7523 }
7524
7525 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7526 h = uri + uri_auth->uri_len;
7527 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7528 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7529 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7530 break;
7531 }
7532 h++;
7533 }
7534 }
7535
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7536 h = uri + uri_auth->uri_len;
7537 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7538 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7539 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7540 break;
7541 }
7542 h++;
7543 }
7544
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7545 h = uri + uri_auth->uri_len;
7546 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7547 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7548 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7549 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7550 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7551 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7552 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7553 si->applet.ctx.stats.st_code = i;
7554 break;
7555 }
7556 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7557 break;
7558 }
7559 h++;
7560 }
7561
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7562 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7563
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7564 return 1;
7565}
7566
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7567/*
7568 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7569 * By default it tries to report the error position as msg->err_pos. However if
7570 * this one is not set, it will then report msg->next, which is the last known
7571 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7572 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7573 */
7574void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7575 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7576 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7577{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7578 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7579 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7580
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7581 es->len = MIN(chn->buf->i, sizeof(es->buf));
7582 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7583 len1 = MIN(len1, es->len);
7584 len2 = es->len - len1; /* remaining data if buffer wraps */
7585
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7586 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7587 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7588 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7589
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7590 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7591 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7592 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7593 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7594
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7595 es->when = date; // user-visible date
7596 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7597 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7598 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7599 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7600 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7601 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7602 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7603 es->s_flags = s->flags;
7604 es->t_flags = s->txn.flags;
7605 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7606 es->b_out = chn->buf->o;
7607 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7608 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7609 es->m_clen = msg->chunk_len;
7610 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7611}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7612
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7613/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7614 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7615 * performed over the whole headers. Otherwise it must contain a valid header
7616 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7617 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7618 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7619 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7620 * -1.
7621 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7622 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7623unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7624 struct hdr_idx *idx, int occ,
7625 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7626{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7627 struct hdr_ctx local_ctx;
7628 char *ptr_hist[MAX_HDR_HISTORY];
7629 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7630 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7631 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7632
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7633 if (!ctx) {
7634 local_ctx.idx = 0;
7635 ctx = &local_ctx;
7636 }
7637
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7638 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7639 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7640 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7641 occ--;
7642 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7643 *vptr = ctx->line + ctx->val;
7644 *vlen = ctx->vlen;
7645 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7646 }
7647 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7648 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7649 }
7650
7651 /* negative occurrence, we scan all the list then walk back */
7652 if (-occ > MAX_HDR_HISTORY)
7653 return 0;
7654
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7655 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7656 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7657 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7658 len_hist[hist_ptr] = ctx->vlen;
7659 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7660 hist_ptr = 0;
7661 found++;
7662 }
7663 if (-occ > found)
7664 return 0;
7665 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7666 * find occurrence -occ, so we have to check [hist_ptr+occ].
7667 */
7668 hist_ptr += occ;
7669 if (hist_ptr >= MAX_HDR_HISTORY)
7670 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7671 *vptr = ptr_hist[hist_ptr];
7672 *vlen = len_hist[hist_ptr];
7673 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7674}
7675
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7676/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7677 * Print a debug line with a header. Always stop at the first CR or LF char,
7678 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7679 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7680 */
7681void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7682{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7683 int max;
7684 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7685 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7686 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7687
7688 for (max = 0; start + max < end; max++)
7689 if (start[max] == '\r' || start[max] == '\n')
7690 break;
7691
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7692 UBOUND(max, trash.size - trash.len - 3);
7693 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7694 trash.str[trash.len++] = '\n';
7695 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7696}
7697
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7698/*
7699 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7700 * the required fields are properly allocated and that we only need to (re)init
7701 * them. This should be used before processing any new request.
7702 */
7703void http_init_txn(struct session *s)
7704{
7705 struct http_txn *txn = &s->txn;
7706 struct proxy *fe = s->fe;
7707
7708 txn->flags = 0;
7709 txn->status = -1;
7710
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7711 global.req_count++;
7712
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7713 txn->cookie_first_date = 0;
7714 txn->cookie_last_date = 0;
7715
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7716 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7717 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7718 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7719 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7720 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7721 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7722 txn->req.chunk_len = 0LL;
7723 txn->req.body_len = 0LL;
7724 txn->rsp.chunk_len = 0LL;
7725 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7726 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7727 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7728 txn->req.chn = s->req;
7729 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7730
7731 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7732
7733 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7734 if (fe->options2 & PR_O2_REQBUG_OK)
7735 txn->req.err_pos = -1; /* let buggy requests pass */
7736
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7737 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7738 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7739
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7740 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7741 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7742
7743 if (txn->hdr_idx.v)
7744 hdr_idx_init(&txn->hdr_idx);
7745}
7746
7747/* to be used at the end of a transaction */
7748void http_end_txn(struct session *s)
7749{
7750 struct http_txn *txn = &s->txn;
7751
7752 /* these ones will have been dynamically allocated */
7753 pool_free2(pool2_requri, txn->uri);
7754 pool_free2(pool2_capture, txn->cli_cookie);
7755 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7756 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7757 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7758
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7759 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7760 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7761 txn->uri = NULL;
7762 txn->srv_cookie = NULL;
7763 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7764
7765 if (txn->req.cap) {
7766 struct cap_hdr *h;
7767 for (h = s->fe->req_cap; h; h = h->next)
7768 pool_free2(h->pool, txn->req.cap[h->index]);
7769 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7770 }
7771
7772 if (txn->rsp.cap) {
7773 struct cap_hdr *h;
7774 for (h = s->fe->rsp_cap; h; h = h->next)
7775 pool_free2(h->pool, txn->rsp.cap[h->index]);
7776 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7777 }
7778
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7779}
7780
7781/* to be used at the end of a transaction to prepare a new one */
7782void http_reset_txn(struct session *s)
7783{
7784 http_end_txn(s);
7785 http_init_txn(s);
7786
7787 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7788 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7789 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7790 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7791 /* re-init store persistence */
7792 s->store_count = 0;
7793
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7794 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7795
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7796 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7797
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7798 /* We must trim any excess data from the response buffer, because we
7799 * may have blocked an invalid response from a server that we don't
7800 * want to accidentely forward once we disable the analysers, nor do
7801 * we want those data to come along with next response. A typical
7802 * example of such data would be from a buggy server responding to
7803 * a HEAD with some data, or sending more than the advertised
7804 * content-length.
7805 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7806 if (unlikely(s->rep->buf->i))
7807 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7808
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7809 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7810 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7811
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7812 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7813 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7814
7815 s->req->rex = TICK_ETERNITY;
7816 s->req->wex = TICK_ETERNITY;
7817 s->req->analyse_exp = TICK_ETERNITY;
7818 s->rep->rex = TICK_ETERNITY;
7819 s->rep->wex = TICK_ETERNITY;
7820 s->rep->analyse_exp = TICK_ETERNITY;
7821}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7822
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7823void free_http_req_rules(struct list *r) {
7824 struct http_req_rule *tr, *pr;
7825
7826 list_for_each_entry_safe(pr, tr, r, list) {
7827 LIST_DEL(&pr->list);
7828 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7829 free(pr->http_auth.realm);
7830
7831 free(pr);
7832 }
7833}
7834
7835struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7836{
7837 struct http_req_rule *rule;
7838 int cur_arg;
7839
7840 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7841 if (!rule) {
7842 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7843 return NULL;
7844 }
7845
7846 if (!*args[0]) {
7847 goto req_error_parsing;
7848 } else if (!strcmp(args[0], "allow")) {
7849 rule->action = HTTP_REQ_ACT_ALLOW;
7850 cur_arg = 1;
7851 } else if (!strcmp(args[0], "deny")) {
7852 rule->action = HTTP_REQ_ACT_DENY;
7853 cur_arg = 1;
7854 } else if (!strcmp(args[0], "auth")) {
7855 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7856 cur_arg = 1;
7857
7858 while(*args[cur_arg]) {
7859 if (!strcmp(args[cur_arg], "realm")) {
7860 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7861 cur_arg+=2;
7862 continue;
7863 } else
7864 break;
7865 }
7866 } else {
7867req_error_parsing:
7868 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7869 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7870 return NULL;
7871 }
7872
7873 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7874 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7875 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7876
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7877 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7878 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7879 file, linenum, args[0], errmsg);
7880 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7881 return NULL;
7882 }
7883 rule->cond = cond;
7884 }
7885 else if (*args[cur_arg]) {
7886 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7887 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7888 file, linenum, args[0], args[cur_arg]);
7889 return NULL;
7890 }
7891
7892 return rule;
7893}
7894
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7895/************************************************************************/
7896/* The code below is dedicated to ACL parsing and matching */
7897/************************************************************************/
7898
7899
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7900/* This function ensures that the prerequisites for an L7 fetch are ready,
7901 * which means that a request or response is ready. If some data is missing,
7902 * 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]7903 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7904 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7905 *
7906 * The function returns :
7907 * 0 if some data is missing or if the requested data cannot be fetched
7908 * -1 if it is certain that we'll never have any HTTP message there
7909 * 1 if an HTTP message is ready
7910 */
7911static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7912acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7913 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7914{
7915 struct http_txn *txn = l7;
7916 struct http_msg *msg = &txn->req;
7917
7918 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7919 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7920 */
7921
7922 if (unlikely(!s || !txn))
7923 return 0;
7924
7925 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7926 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7927
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7928 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7929 if (unlikely(!s->req))
7930 return 0;
7931
7932 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7933 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7934 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7935 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7936 return -1;
7937 }
7938
7939 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7940 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7941 http_msg_analyzer(msg, &txn->hdr_idx);
7942
7943 /* Still no valid request ? */
7944 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7945 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7946 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7947 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7948 return -1;
7949 }
7950 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7951 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7952 return 0;
7953 }
7954
7955 /* OK we just got a valid HTTP request. We have some minor
7956 * preparation to perform so that further checks can rely
7957 * on HTTP tests.
7958 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7959 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7960 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7961 s->flags |= SN_REDIRECTABLE;
7962
7963 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7964 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7965 return -1;
7966 }
7967 }
7968
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7969 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7970 return 0; /* data might have moved and indexes changed */
7971
7972 /* otherwise everything's ready for the request */
7973 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7974 else {
7975 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7976 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7977 return 0;
7978 }
7979
7980 /* everything's OK */
7981 return 1;
7982}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7983
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7984#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7985 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]7986
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7987#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7988 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]7989
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7990
7991/* 1. Check on METHOD
7992 * We use the pre-parsed method if it is known, and store its number as an
7993 * integer. If it is unknown, we use the pointer and the length.
7994 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7995static 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]7996{
7997 int len, meth;
7998
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7999 len = strlen(*text);
8000 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8001
8002 pattern->val.i = meth;
8003 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8004 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8005 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8006 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8007 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8008 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8009 pattern->len = len;
8010 }
8011 return 1;
8012}
8013
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8014/* This function fetches the method of current HTTP request and stores
8015 * it in the global pattern struct as a chunk. There are two possibilities :
8016 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8017 * in <len> and <ptr> is NULL ;
8018 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8019 * <len> to its length.
8020 * This is intended to be used with acl_match_meth() only.
8021 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8022static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8023acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8024 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8025{
8026 int meth;
8027 struct http_txn *txn = l7;
8028
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8029 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8030
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8031 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8032 smp->type = SMP_T_UINT;
8033 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8034 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8035 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8036 /* ensure the indexes are not affected */
8037 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8038 smp->type = SMP_T_CSTR;
8039 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8040 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8041 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8042 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8043 return 1;
8044}
8045
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8046/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8047static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8048{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8049 int icase;
8050
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8051
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8052 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8053 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8054 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8055 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8056 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8057 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8058
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8059 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8060 if (pattern->val.i != HTTP_METH_OTHER)
8061 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8062
8063 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8064 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8065 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8066
8067 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8068 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8069 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8070 return ACL_PAT_FAIL;
8071 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8072}
8073
8074/* 2. Check on Request/Status Version
8075 * We simply compare strings here.
8076 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8077static 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]8078{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8079 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8080 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8081 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8082 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8083 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8084 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8085 return 1;
8086}
8087
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8088static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8089acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8090 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8091{
8092 struct http_txn *txn = l7;
8093 char *ptr;
8094 int len;
8095
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8096 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8097
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8098 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8099 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8100
8101 while ((len-- > 0) && (*ptr++ != '/'));
8102 if (len <= 0)
8103 return 0;
8104
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8105 smp->type = SMP_T_CSTR;
8106 smp->data.str.str = ptr;
8107 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8108
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8109 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8110 return 1;
8111}
8112
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8113static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8114acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8115 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8116{
8117 struct http_txn *txn = l7;
8118 char *ptr;
8119 int len;
8120
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8121 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8122
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8123 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8124 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8125
8126 while ((len-- > 0) && (*ptr++ != '/'));
8127 if (len <= 0)
8128 return 0;
8129
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8130 smp->type = SMP_T_CSTR;
8131 smp->data.str.str = ptr;
8132 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8133
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8134 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8135 return 1;
8136}
8137
8138/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8139static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8140acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8141 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8142{
8143 struct http_txn *txn = l7;
8144 char *ptr;
8145 int len;
8146
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8147 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8148
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8149 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8150 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8151
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8152 smp->type = SMP_T_UINT;
8153 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8154 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8155 return 1;
8156}
8157
8158/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8159static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8160smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8161 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8162{
8163 struct http_txn *txn = l7;
8164
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8165 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8166
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8167 smp->type = SMP_T_CSTR;
8168 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8169 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8170 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8171 return 1;
8172}
8173
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8174static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8175smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8176 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8177{
8178 struct http_txn *txn = l7;
8179
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8180 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8181
8182 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8183 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8184 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8185 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8186 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8187 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8188
8189 /*
8190 * If we are parsing url in frontend space, we prepare backend stage
8191 * to not parse again the same url ! optimization lazyness...
8192 */
8193 if (px->options & PR_O_HTTP_PROXY)
8194 l4->flags |= SN_ADDR_SET;
8195
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8196 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8197 return 1;
8198}
8199
8200static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8201smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8202 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8203{
8204 struct http_txn *txn = l7;
8205
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8206 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8207
8208 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8209 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8210 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8211 smp->data.uint = ntohs(((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_port);
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8212
8213 if (px->options & PR_O_HTTP_PROXY)
8214 l4->flags |= SN_ADDR_SET;
8215
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8216 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8217 return 1;
8218}
8219
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8220/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8221 * Accepts an optional argument of type string containing the header field name,
8222 * and an optional argument of type signed or unsigned integer to request an
8223 * explicit occurrence of the header. Note that in the event of a missing name,
8224 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8225 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8226static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8227smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8228 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8229{
8230 struct http_txn *txn = l7;
8231 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8232 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8233 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]8234 int occ = 0;
8235 const char *name_str = NULL;
8236 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8237
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8238 if (args) {
8239 if (args[0].type != ARGT_STR)
8240 return 0;
8241 name_str = args[0].data.str.str;
8242 name_len = args[0].data.str.len;
8243
8244 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8245 occ = args[1].data.uint;
8246 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8247
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8248 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8249
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8250 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8251 /* search for header from the beginning */
8252 ctx->idx = 0;
8253
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8254 if (!occ && !(opt & SMP_OPT_ITERATE))
8255 /* no explicit occurrence and single fetch => last header by default */
8256 occ = -1;
8257
8258 if (!occ)
8259 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8260 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8261
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8262 smp->type = SMP_T_CSTR;
8263 smp->flags |= SMP_F_VOL_HDR;
8264 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]8265 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8266
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8267 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8268 return 0;
8269}
8270
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8271/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8272 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8273 */
8274static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8275smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8276 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8277{
8278 struct http_txn *txn = l7;
8279 struct hdr_idx *idx = &txn->hdr_idx;
8280 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8281 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]8282 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8283
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8284 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8285 return 0;
8286
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8287 CHECK_HTTP_MESSAGE_FIRST();
8288
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8289 ctx.idx = 0;
8290 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8291 while (http_find_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8292 cnt++;
8293
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8294 smp->type = SMP_T_UINT;
8295 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8296 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8297 return 1;
8298}
8299
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8300/* Fetch an HTTP header's integer value. The integer value is returned. It
8301 * takes a mandatory argument of type string and an optional one of type int
8302 * to designate a specific occurrence. It returns an unsigned integer, which
8303 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8304 */
8305static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8306smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8307 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8308{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8309 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8310
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8311 if (ret > 0) {
8312 smp->type = SMP_T_UINT;
8313 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8314 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8315
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8316 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8317}
8318
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8319/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8320 * and an optional one of type int to designate a specific occurrence.
8321 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8322 */
8323static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8324smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8325 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8326{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8327 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8328
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8329 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8330 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8331 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8332 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8333 } else {
8334 struct chunk *temp = sample_get_trash_chunk();
8335 if (smp->data.str.len < temp->size - 1) {
8336 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8337 temp->str[smp->data.str.len] = '\0';
8338 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8339 smp->type = SMP_T_IPV6;
8340 break;
8341 }
8342 }
8343 }
8344
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8345 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8346 if (!(smp->flags & SMP_F_NOT_LAST))
8347 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8348 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8349 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8350}
8351
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8352/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8353 * the first '/' after the possible hostname, and ends before the possible '?'.
8354 */
8355static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8356smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8357 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8358{
8359 struct http_txn *txn = l7;
8360 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8361
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8362 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8363
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8364 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]8365 ptr = http_get_path(txn);
8366 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8367 return 0;
8368
8369 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8370 smp->type = SMP_T_CSTR;
8371 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8372
8373 while (ptr < end && *ptr != '?')
8374 ptr++;
8375
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8376 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8377 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8378 return 1;
8379}
8380
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8381/* This produces a concatenation of the first occurrence of the Host header
8382 * followed by the path component if it begins with a slash ('/'). This means
8383 * that '*' will not be added, resulting in exactly the first Host entry.
8384 * If no Host header is found, then the path is returned as-is. The returned
8385 * value is stored in the trash so it does not need to be marked constant.
8386 */
8387static int
8388smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8389 const struct arg *args, struct sample *smp)
8390{
8391 struct http_txn *txn = l7;
8392 char *ptr, *end, *beg;
8393 struct hdr_ctx ctx;
8394
8395 CHECK_HTTP_MESSAGE_FIRST();
8396
8397 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8398 if (!http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx) ||
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8399 !ctx.vlen)
8400 return smp_fetch_path(px, l4, l7, opt, args, smp);
8401
8402 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8403 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8404 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8405 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8406 smp->data.str.len = ctx.vlen;
8407
8408 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8409 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8410 beg = http_get_path(txn);
8411 if (!beg)
8412 beg = end;
8413
8414 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8415
8416 if (beg < ptr && *beg == '/') {
8417 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8418 smp->data.str.len += ptr - beg;
8419 }
8420
8421 smp->flags = SMP_F_VOL_1ST;
8422 return 1;
8423}
8424
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8425static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8426acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8427 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8428{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8429 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8430 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8431 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8432
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8433 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8434
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8435 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8436 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8437 return 1;
8438}
8439
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8440/* return a valid test if the current request is the first one on the connection */
8441static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8442acl_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]8443 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8444{
8445 if (!s)
8446 return 0;
8447
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8448 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8449 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8450 return 1;
8451}
8452
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8453/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8454static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8455acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8456 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8457{
8458
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8459 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8460 return 0;
8461
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8462 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8463
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8464 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8465 return 0;
8466
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8467 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8468 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]8469 return 1;
8470}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8471
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8472/* Accepts exactly 1 argument of type userlist */
8473static int
8474acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8475 const struct arg *args, struct sample *smp)
8476{
8477
8478 if (!args || args->type != ARGT_USR)
8479 return 0;
8480
8481 CHECK_HTTP_MESSAGE_FIRST();
8482
8483 if (!get_http_auth(l4))
8484 return 0;
8485
8486 /* acl_match_auth() will need several information at once */
8487 smp->ctx.a[0] = args->data.usr; /* user list */
8488 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8489 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8490
8491 /* if the user does not belong to the userlist or has a wrong password,
8492 * report that it unconditionally does not match. Otherwise we return
8493 * a non-zero integer which will be ignored anyway since all the params
8494 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8495 */
8496 smp->type = SMP_T_BOOL;
8497 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8498 if (smp->data.uint)
8499 smp->type = SMP_T_UINT;
8500
8501 return 1;
8502}
8503
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8504/* Try to find the next occurrence of a cookie name in a cookie header value.
8505 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8506 * the cookie value is returned into *value and *value_l, and the function
8507 * returns a pointer to the next pointer to search from if the value was found.
8508 * Otherwise if the cookie was not found, NULL is returned and neither value
8509 * nor value_l are touched. The input <hdr> string should first point to the
8510 * header's value, and the <hdr_end> pointer must point to the first character
8511 * not part of the value. <list> must be non-zero if value may represent a list
8512 * of values (cookie headers). This makes it faster to abort parsing when no
8513 * list is expected.
8514 */
8515static char *
8516extract_cookie_value(char *hdr, const char *hdr_end,
8517 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8518 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8519{
8520 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8521 char *next;
8522
8523 /* we search at least a cookie name followed by an equal, and more
8524 * generally something like this :
8525 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8526 */
8527 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8528 /* Iterate through all cookies on this line */
8529
8530 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8531 att_beg++;
8532
8533 /* find att_end : this is the first character after the last non
8534 * space before the equal. It may be equal to hdr_end.
8535 */
8536 equal = att_end = att_beg;
8537
8538 while (equal < hdr_end) {
8539 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8540 break;
8541 if (http_is_spht[(unsigned char)*equal++])
8542 continue;
8543 att_end = equal;
8544 }
8545
8546 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8547 * is between <att_beg> and <equal>, both may be identical.
8548 */
8549
8550 /* look for end of cookie if there is an equal sign */
8551 if (equal < hdr_end && *equal == '=') {
8552 /* look for the beginning of the value */
8553 val_beg = equal + 1;
8554 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8555 val_beg++;
8556
8557 /* find the end of the value, respecting quotes */
8558 next = find_cookie_value_end(val_beg, hdr_end);
8559
8560 /* make val_end point to the first white space or delimitor after the value */
8561 val_end = next;
8562 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8563 val_end--;
8564 } else {
8565 val_beg = val_end = next = equal;
8566 }
8567
8568 /* We have nothing to do with attributes beginning with '$'. However,
8569 * they will automatically be removed if a header before them is removed,
8570 * since they're supposed to be linked together.
8571 */
8572 if (*att_beg == '$')
8573 continue;
8574
8575 /* Ignore cookies with no equal sign */
8576 if (equal == next)
8577 continue;
8578
8579 /* Now we have the cookie name between att_beg and att_end, and
8580 * its value between val_beg and val_end.
8581 */
8582
8583 if (att_end - att_beg == cookie_name_l &&
8584 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8585 /* let's return this value and indicate where to go on from */
8586 *value = val_beg;
8587 *value_l = val_end - val_beg;
8588 return next + 1;
8589 }
8590
8591 /* Set-Cookie headers only have the name in the first attr=value part */
8592 if (!list)
8593 break;
8594 }
8595
8596 return NULL;
8597}
8598
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8599/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8600 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8601 * 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]8602 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8603 * 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]8604 * Accepts exactly 1 argument of type string. If the input options indicate
8605 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8606 */
8607static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8608smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8609 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8610{
8611 struct http_txn *txn = l7;
8612 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8613 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8614 const struct http_msg *msg;
8615 const char *hdr_name;
8616 int hdr_name_len;
8617 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8618 int occ = 0;
8619 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8620
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8621 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8622 return 0;
8623
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8624 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8625
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8626 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8627 msg = &txn->req;
8628 hdr_name = "Cookie";
8629 hdr_name_len = 6;
8630 } else {
8631 msg = &txn->rsp;
8632 hdr_name = "Set-Cookie";
8633 hdr_name_len = 10;
8634 }
8635
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8636 if (!occ && !(opt & SMP_OPT_ITERATE))
8637 /* no explicit occurrence and single fetch => last cookie by default */
8638 occ = -1;
8639
8640 /* OK so basically here, either we want only one value and it's the
8641 * last one, or we want to iterate over all of them and we fetch the
8642 * next one.
8643 */
8644
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8645 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8646 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8647 /* search for the header from the beginning, we must first initialize
8648 * the search parameters.
8649 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8650 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8651 ctx->idx = 0;
8652 }
8653
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8654 smp->flags |= SMP_F_VOL_HDR;
8655
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8656 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8657 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8658 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8659 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8660 goto out;
8661
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8662 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8663 continue;
8664
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8665 smp->ctx.a[0] = ctx->line + ctx->val;
8666 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8667 }
8668
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8669 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8670 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]8671 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8672 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8673 &smp->data.str.str,
8674 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8675 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8676 found = 1;
8677 if (occ >= 0) {
8678 /* one value was returned into smp->data.str.{str,len} */
8679 smp->flags |= SMP_F_NOT_LAST;
8680 return 1;
8681 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8682 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8683 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8684 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8685 /* all cookie headers and values were scanned. If we're looking for the
8686 * last occurrence, we may return it now.
8687 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8688 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8689 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8690 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8691}
8692
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8693/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8694 * 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]8695 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8696 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8697 */
8698static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8699acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8700 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8701{
8702 struct http_txn *txn = l7;
8703 struct hdr_idx *idx = &txn->hdr_idx;
8704 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8705 const struct http_msg *msg;
8706 const char *hdr_name;
8707 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8708 int cnt;
8709 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8710 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8711
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8712 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8713 return 0;
8714
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8715 CHECK_HTTP_MESSAGE_FIRST();
8716
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8717 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8718 msg = &txn->req;
8719 hdr_name = "Cookie";
8720 hdr_name_len = 6;
8721 } else {
8722 msg = &txn->rsp;
8723 hdr_name = "Set-Cookie";
8724 hdr_name_len = 10;
8725 }
8726
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8727 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8728 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8729 ctx.idx = 0;
8730 cnt = 0;
8731
8732 while (1) {
8733 /* Note: val_beg == NULL every time we need to fetch a new header */
8734 if (!val_beg) {
8735 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8736 break;
8737
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8738 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8739 continue;
8740
8741 val_beg = ctx.line + ctx.val;
8742 val_end = val_beg + ctx.vlen;
8743 }
8744
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8745 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8746 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8747 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8748 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8749 &smp->data.str.str,
8750 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8751 cnt++;
8752 }
8753 }
8754
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8755 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8756 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8757 return 1;
8758}
8759
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8760/* Fetch an cookie's integer value. The integer value is returned. It
8761 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8762 */
8763static int
8764smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8765 const struct arg *args, struct sample *smp)
8766{
8767 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8768
8769 if (ret > 0) {
8770 smp->type = SMP_T_UINT;
8771 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8772 }
8773
8774 return ret;
8775}
8776
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8777/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8778/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8779/************************************************************************/
8780
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8781/*
8782 * Given a path string and its length, find the position of beginning of the
8783 * query string. Returns NULL if no query string is found in the path.
8784 *
8785 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8786 *
8787 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8788 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8789static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8790{
8791 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8792
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8793 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8794 return p ? p + 1 : NULL;
8795}
8796
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8797static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8798{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8799 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8800}
8801
8802/*
8803 * Given a url parameter, find the starting position of the first occurence,
8804 * or NULL if the parameter is not found.
8805 *
8806 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8807 * the function will return query_string+8.
8808 */
8809static char*
8810find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8811 char* url_param_name, size_t url_param_name_l,
8812 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8813{
8814 char *pos, *last;
8815
8816 pos = query_string;
8817 last = query_string + query_string_l - url_param_name_l - 1;
8818
8819 while (pos <= last) {
8820 if (pos[url_param_name_l] == '=') {
8821 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8822 return pos;
8823 pos += url_param_name_l + 1;
8824 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8825 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8826 pos++;
8827 pos++;
8828 }
8829 return NULL;
8830}
8831
8832/*
8833 * Given a url parameter name, returns its value and size into *value and
8834 * *value_l respectively, and returns non-zero. If the parameter is not found,
8835 * zero is returned and value/value_l are not touched.
8836 */
8837static int
8838find_url_param_value(char* path, size_t path_l,
8839 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8840 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8841{
8842 char *query_string, *qs_end;
8843 char *arg_start;
8844 char *value_start, *value_end;
8845
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8846 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8847 if (!query_string)
8848 return 0;
8849
8850 qs_end = path + path_l;
8851 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8852 url_param_name, url_param_name_l,
8853 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8854 if (!arg_start)
8855 return 0;
8856
8857 value_start = arg_start + url_param_name_l + 1;
8858 value_end = value_start;
8859
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8860 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8861 value_end++;
8862
8863 *value = value_start;
8864 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8865 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8866}
8867
8868static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8869smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8870 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8871{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8872 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8873 struct http_txn *txn = l7;
8874 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8875
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8876 if (!args || args[0].type != ARGT_STR ||
8877 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8878 return 0;
8879
8880 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8881
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8882 if (args[1].type)
8883 delim = *args[1].data.str.str;
8884
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8885 if (!find_url_param_value(msg->chn->buf->p + msg->sl.rq.u, msg->sl.rq.u_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8886 args->data.str.str, args->data.str.len,
8887 &smp->data.str.str, &smp->data.str.len,
8888 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8889 return 0;
8890
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8891 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8892 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8893 return 1;
8894}
8895
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8896/* Return the signed integer value for the specified url parameter (see url_param
8897 * above).
8898 */
8899static int
8900smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8901 const struct arg *args, struct sample *smp)
8902{
8903 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8904
8905 if (ret > 0) {
8906 smp->type = SMP_T_UINT;
8907 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8908 }
8909
8910 return ret;
8911}
8912
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8913/* This function is used to validate the arguments passed to any "hdr" fetch
8914 * keyword. These keywords support an optional positive or negative occurrence
8915 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8916 * is assumed that the types are already the correct ones. Returns 0 on error,
8917 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8918 * error message in case of error, that the caller is responsible for freeing.
8919 * The initial location must either be freeable or NULL.
8920 */
8921static int val_hdr(struct arg *arg, char **err_msg)
8922{
8923 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8924 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8925 return 0;
8926 }
8927 return 1;
8928}
8929
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8930/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8931/* All supported ACL keywords must be declared here. */
8932/************************************************************************/
8933
8934/* Note: must not be declared <const> as its list will be overwritten.
8935 * Please take care of keeping this list alphabetically sorted.
8936 */
8937static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8938 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8939 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8940 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8941 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8942 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8943 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8944 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8945 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8946
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8947 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8948 { "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]8949 { "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]8950 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8951 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8952 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8953 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8954 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8955 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8956 { "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]8957
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8958 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8959 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8960 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8961 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8962 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8963 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8964 { "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 },
8965 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8966 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8967 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8968 { "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]8969
8970 { "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]8971 { "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]8972 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8973
8974 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8975
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8976 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8977 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8978 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8979 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8980 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8981 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8982 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8983 { "path_sub", acl_parse_str, smp_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8984
8985 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8986 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8987 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8988
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8989 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8990 { "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]8991 { "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]8992 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8993 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8994 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8995 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8996 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8997 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8998 { "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]8999
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9000 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9001 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9002 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9003 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9004 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9005 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9006 { "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 },
9007 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9008 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9009 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9010 { "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]9011
9012 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9013
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9014 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9015 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9016 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9017 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9018 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9019 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9020 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9021 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9022 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9023 { "url_sub", acl_parse_str, smp_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9024
9025 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9026 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9027 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9028 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9029 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9030 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9031 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9032 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9033 { "urlp_sub", acl_parse_str, smp_fetch_url_param, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9034 { "urlp_val", acl_parse_int, smp_fetch_url_param_val, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9035
9036 { NULL, NULL, NULL, NULL },
9037}};
9038
9039/************************************************************************/
9040/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9041/************************************************************************/
9042/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9043static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9044 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9045 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9046 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9047 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9048 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9049 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9050 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9051 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9052 { "set-cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_RES }, /* deprecated */
Willy Tarreau9fcb9842012-04-20 14:45:49 +0200[diff] [blame]9053 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9054}};
9055
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9056
9057__attribute__((constructor))
9058static void __http_protocol_init(void)
9059{
9060 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9061 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9062}
9063
9064
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9065/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9066 * Local variables:
9067 * c-indent-level: 8
9068 * c-basic-offset: 8
9069 * End:
9070 */