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git01.mediatek.com / haproxy / 4e8ec500e54c2781964cb2af7b3e7545138fea28 / . / src / proto_http.c
blob: 4644acfc339f578e2f03c91712460573934c19d8 [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);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]272 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]273}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]274
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]275/*
276 * We have 26 list of methods (1 per first letter), each of which can have
277 * up to 3 entries (2 valid, 1 null).
278 */
279struct http_method_desc {
280 http_meth_t meth;
281 int len;
282 const char text[8];
283};
284
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]285const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]286 ['C' - 'A'] = {
287 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
288 },
289 ['D' - 'A'] = {
290 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
291 },
292 ['G' - 'A'] = {
293 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
294 },
295 ['H' - 'A'] = {
296 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
297 },
298 ['P' - 'A'] = {
299 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
300 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
301 },
302 ['T' - 'A'] = {
303 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
304 },
305 /* rest is empty like this :
306 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
307 */
308};
309
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]310/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]311 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]312 * RFC2616 for those chars.
313 */
314
315const char http_is_spht[256] = {
316 [' '] = 1, ['\t'] = 1,
317};
318
319const char http_is_crlf[256] = {
320 ['\r'] = 1, ['\n'] = 1,
321};
322
323const char http_is_lws[256] = {
324 [' '] = 1, ['\t'] = 1,
325 ['\r'] = 1, ['\n'] = 1,
326};
327
328const char http_is_sep[256] = {
329 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
330 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
331 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
332 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
333 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
334};
335
336const char http_is_ctl[256] = {
337 [0 ... 31] = 1,
338 [127] = 1,
339};
340
341/*
342 * A token is any ASCII char that is neither a separator nor a CTL char.
343 * Do not overwrite values in assignment since gcc-2.95 will not handle
344 * them correctly. Instead, define every non-CTL char's status.
345 */
346const char http_is_token[256] = {
347 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
348 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
349 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
350 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
351 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
352 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
353 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
354 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
355 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
356 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
357 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
358 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
359 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
360 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
361 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
362 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
363 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
364 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
365 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
366 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
367 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
368 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
369 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
370 ['|'] = 1, ['}'] = 0, ['~'] = 1,
371};
372
373
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]374/*
375 * An http ver_token is any ASCII which can be found in an HTTP version,
376 * which includes 'H', 'T', 'P', '/', '.' and any digit.
377 */
378const char http_is_ver_token[256] = {
379 ['.'] = 1, ['/'] = 1,
380 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
381 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
382 ['H'] = 1, ['P'] = 1, ['T'] = 1,
383};
384
385
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]386/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]387 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
388 */
389#if defined(DEBUG_FSM)
390static void http_silent_debug(int line, struct session *s)
391{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]392 chunk_printf(&trash,
393 "[%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",
394 line,
395 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
396 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);
397 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]398
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]399 chunk_printf(&trash,
400 " %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",
401 line,
402 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
403 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);
404 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]405}
406#else
407#define http_silent_debug(l,s) do { } while (0)
408#endif
409
410/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]411 * Adds a header and its CRLF at the tail of the message's buffer, just before
412 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]413 * The header is also automatically added to the index <hdr_idx>, and the end
414 * of headers is automatically adjusted. The number of bytes added is returned
415 * on success, otherwise <0 is returned indicating an error.
416 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]417int 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]418{
419 int bytes, len;
420
421 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]422 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]423 if (!bytes)
424 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]425 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]426 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
427}
428
429/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]430 * Adds a header and its CRLF at the tail of the message's buffer, just before
431 * 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]432 * the buffer is only opened and the space reserved, but nothing is copied.
433 * The header is also automatically added to the index <hdr_idx>, and the end
434 * of headers is automatically adjusted. The number of bytes added is returned
435 * on success, otherwise <0 is returned indicating an error.
436 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]437int http_header_add_tail2(struct http_msg *msg,
438 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]439{
440 int bytes;
441
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]442 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]443 if (!bytes)
444 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]445 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]446 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
447}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]448
449/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]450 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
451 * If so, returns the position of the first non-space character relative to
452 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
453 * to return a pointer to the place after the first space. Returns 0 if the
454 * header name does not match. Checks are case-insensitive.
455 */
456int http_header_match2(const char *hdr, const char *end,
457 const char *name, int len)
458{
459 const char *val;
460
461 if (hdr + len >= end)
462 return 0;
463 if (hdr[len] != ':')
464 return 0;
465 if (strncasecmp(hdr, name, len) != 0)
466 return 0;
467 val = hdr + len + 1;
468 while (val < end && HTTP_IS_SPHT(*val))
469 val++;
470 if ((val >= end) && (len + 2 <= end - hdr))
471 return len + 2; /* we may replace starting from second space */
472 return val - hdr;
473}
474
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]475/* Find the end of the header value contained between <s> and <e>. See RFC2616,
476 * par 2.2 for more information. Note that it requires a valid header to return
477 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]478 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]479char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]480{
481 int quoted, qdpair;
482
483 quoted = qdpair = 0;
484 for (; s < e; s++) {
485 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]486 else if (quoted) {
487 if (*s == '\\') qdpair = 1;
488 else if (*s == '"') quoted = 0;
489 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]490 else if (*s == '"') quoted = 1;
491 else if (*s == ',') return s;
492 }
493 return s;
494}
495
496/* Find the first or next occurrence of header <name> in message buffer <sol>
497 * using headers index <idx>, and return it in the <ctx> structure. This
498 * structure holds everything necessary to use the header and find next
499 * occurrence. If its <idx> member is 0, the header is searched from the
500 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]501 * 1 when it finds a value, and 0 when there is no more. It is designed to work
502 * with headers defined as comma-separated lists. As a special case, if ctx->val
503 * is NULL when searching for a new values of a header, the current header is
504 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]505 */
506int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]507 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 struct hdr_ctx *ctx)
509{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]510 char *eol, *sov;
511 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]512
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]513 cur_idx = ctx->idx;
514 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]515 /* We have previously returned a value, let's search
516 * another one on the same line.
517 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]518 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]519 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]520 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]521 eol = sol + idx->v[cur_idx].len;
522
523 if (sov >= eol)
524 /* no more values in this header */
525 goto next_hdr;
526
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]527 /* values remaining for this header, skip the comma but save it
528 * for later use (eg: for header deletion).
529 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]530 sov++;
531 while (sov < eol && http_is_lws[(unsigned char)*sov])
532 sov++;
533
534 goto return_hdr;
535 }
536
537 /* first request for this header */
538 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]539 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]540 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]541 while (cur_idx) {
542 eol = sol + idx->v[cur_idx].len;
543
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]544 if (len == 0) {
545 /* No argument was passed, we want any header.
546 * To achieve this, we simply build a fake request. */
547 while (sol + len < eol && sol[len] != ':')
548 len++;
549 name = sol;
550 }
551
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]552 if ((len < eol - sol) &&
553 (sol[len] == ':') &&
554 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]555 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]556 sov = sol + len + 1;
557 while (sov < eol && http_is_lws[(unsigned char)*sov])
558 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]559
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]560 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561 ctx->prev = old_idx;
562 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]563 ctx->idx = cur_idx;
564 ctx->val = sov - sol;
565
566 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]567 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]568 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]569 eol--;
570 ctx->tws++;
571 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]572 ctx->vlen = eol - sov;
573 return 1;
574 }
575 next_hdr:
576 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]577 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]578 cur_idx = idx->v[cur_idx].next;
579 }
580 return 0;
581}
582
583int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]584 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]585 struct hdr_ctx *ctx)
586{
587 return http_find_header2(name, strlen(name), sol, idx, ctx);
588}
589
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]590/* Remove one value of a header. This only works on a <ctx> returned by one of
591 * the http_find_header functions. The value is removed, as well as surrounding
592 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]593 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]594 * message <msg>. The new index is returned. If it is zero, it means there is
595 * no more header, so any processing may stop. The ctx is always left in a form
596 * that can be handled by http_find_header2() to find next occurrence.
597 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]598int 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]599{
600 int cur_idx = ctx->idx;
601 char *sol = ctx->line;
602 struct hdr_idx_elem *hdr;
603 int delta, skip_comma;
604
605 if (!cur_idx)
606 return 0;
607
608 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]609 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]610 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]611 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]612 http_msg_move_end(msg, delta);
613 idx->used--;
614 hdr->len = 0; /* unused entry */
615 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]616 if (idx->tail == ctx->idx)
617 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]618 ctx->idx = ctx->prev; /* walk back to the end of previous header */
619 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
620 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]621 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]622 return ctx->idx;
623 }
624
625 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]626 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
627 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]628 */
629
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]630 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]631 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]632 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]633 NULL, 0);
634 hdr->len += delta;
635 http_msg_move_end(msg, delta);
636 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]637 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]638 return ctx->idx;
639}
640
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]641/* This function handles a server error at the stream interface level. The
642 * stream interface is assumed to be already in a closed state. An optional
643 * message is copied into the input buffer, and an HTTP status code stored.
644 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]645 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]646 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]647static void http_server_error(struct session *t, struct stream_interface *si,
648 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]649{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]650 channel_auto_read(si->ob);
651 channel_abort(si->ob);
652 channel_auto_close(si->ob);
653 channel_erase(si->ob);
654 channel_auto_close(si->ib);
655 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]656 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]657 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]658 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]659 }
660 if (!(t->flags & SN_ERR_MASK))
661 t->flags |= err;
662 if (!(t->flags & SN_FINST_MASK))
663 t->flags |= finst;
664}
665
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]666/* This function returns the appropriate error location for the given session
667 * and message.
668 */
669
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]670struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]671{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]672 if (s->be->errmsg[msgnum].str)
673 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]674 else if (s->fe->errmsg[msgnum].str)
675 return &s->fe->errmsg[msgnum];
676 else
677 return &http_err_chunks[msgnum];
678}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]679
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]680/*
681 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
682 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
683 */
684static http_meth_t find_http_meth(const char *str, const int len)
685{
686 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]687 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]688
689 m = ((unsigned)*str - 'A');
690
691 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]692 for (h = http_methods[m]; h->len > 0; h++) {
693 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]694 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]695 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 };
698 return HTTP_METH_OTHER;
699 }
700 return HTTP_METH_NONE;
701
702}
703
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]704/* Parse the URI from the given transaction (which is assumed to be in request
705 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
706 * It is returned otherwise.
707 */
708static char *
709http_get_path(struct http_txn *txn)
710{
711 char *ptr, *end;
712
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]713 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]714 end = ptr + txn->req.sl.rq.u_l;
715
716 if (ptr >= end)
717 return NULL;
718
719 /* RFC2616, par. 5.1.2 :
720 * Request-URI = "*" | absuri | abspath | authority
721 */
722
723 if (*ptr == '*')
724 return NULL;
725
726 if (isalpha((unsigned char)*ptr)) {
727 /* this is a scheme as described by RFC3986, par. 3.1 */
728 ptr++;
729 while (ptr < end &&
730 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
731 ptr++;
732 /* skip '://' */
733 if (ptr == end || *ptr++ != ':')
734 return NULL;
735 if (ptr == end || *ptr++ != '/')
736 return NULL;
737 if (ptr == end || *ptr++ != '/')
738 return NULL;
739 }
740 /* skip [user[:passwd]@]host[:[port]] */
741
742 while (ptr < end && *ptr != '/')
743 ptr++;
744
745 if (ptr == end)
746 return NULL;
747
748 /* OK, we got the '/' ! */
749 return ptr;
750}
751
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]752/* Returns a 302 for a redirectable request that reaches a server working in
753 * in redirect mode. This may only be called just after the stream interface
754 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
755 * follow normal proxy processing. NOTE: this function is designed to support
756 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]757 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]758void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759{
760 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]761 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]762 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]763 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]764
765 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]766 trash.len = strlen(HTTP_302);
767 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]768
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]769 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]770
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]771 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]772 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]773 return;
774
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]775 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]776 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]777 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
778 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]779 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]780
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]781 /* 3: add the request URI. Since it was already forwarded, we need
782 * to temporarily rewind the buffer.
783 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]784 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]785 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]786
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]787 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]788 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]789
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]790 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]791
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 if (!path)
793 return;
794
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]795 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]796 return;
797
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]798 memcpy(trash.str + trash.len, path, len);
799 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]800
801 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]802 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
803 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]804 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]805 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
806 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]807 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]808
809 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]810 si_shutr(si);
811 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]812 si->err_type = SI_ET_NONE;
813 si->err_loc = NULL;
814 si->state = SI_ST_CLO;
815
816 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]817 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]818
819 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]820 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]821}
822
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]823/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]824 * that the server side is closed. Note that err_type is actually a
825 * bitmask, where almost only aborts may be cumulated with other
826 * values. We consider that aborted operations are more important
827 * than timeouts or errors due to the fact that nobody else in the
828 * logs might explain incomplete retries. All others should avoid
829 * being cumulated. It should normally not be possible to have multiple
830 * aborts at once, but just in case, the first one in sequence is reported.
831 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]832void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]833{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]834 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]835
836 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]837 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]838 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]839 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]840 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]841 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]842 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]843 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]844 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]845 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]846 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]847 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]848 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]849 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]850 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]851 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]852 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]853 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]854 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]855 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]856 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]857}
858
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]859extern const char sess_term_cond[8];
860extern const char sess_fin_state[8];
861extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]862struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]863struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]864struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]865
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]866/*
867 * Capture headers from message starting at <som> according to header list
868 * <cap_hdr>, and fill the <idx> structure appropriately.
869 */
870void capture_headers(char *som, struct hdr_idx *idx,
871 char **cap, struct cap_hdr *cap_hdr)
872{
873 char *eol, *sol, *col, *sov;
874 int cur_idx;
875 struct cap_hdr *h;
876 int len;
877
878 sol = som + hdr_idx_first_pos(idx);
879 cur_idx = hdr_idx_first_idx(idx);
880
881 while (cur_idx) {
882 eol = sol + idx->v[cur_idx].len;
883
884 col = sol;
885 while (col < eol && *col != ':')
886 col++;
887
888 sov = col + 1;
889 while (sov < eol && http_is_lws[(unsigned char)*sov])
890 sov++;
891
892 for (h = cap_hdr; h; h = h->next) {
893 if ((h->namelen == col - sol) &&
894 (strncasecmp(sol, h->name, h->namelen) == 0)) {
895 if (cap[h->index] == NULL)
896 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]897 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]898
899 if (cap[h->index] == NULL) {
900 Alert("HTTP capture : out of memory.\n");
901 continue;
902 }
903
904 len = eol - sov;
905 if (len > h->len)
906 len = h->len;
907
908 memcpy(cap[h->index], sov, len);
909 cap[h->index][len]=0;
910 }
911 }
912 sol = eol + idx->v[cur_idx].cr + 1;
913 cur_idx = idx->v[cur_idx].next;
914 }
915}
916
917
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]918/* either we find an LF at <ptr> or we jump to <bad>.
919 */
920#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
921
922/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
923 * otherwise to <http_msg_ood> with <state> set to <st>.
924 */
925#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
926 ptr++; \
927 if (likely(ptr < end)) \
928 goto good; \
929 else { \
930 state = (st); \
931 goto http_msg_ood; \
932 } \
933 } while (0)
934
935
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]936/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]937 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]938 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
939 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
940 * will give undefined results.
941 * Note that it is upon the caller's responsibility to ensure that ptr < end,
942 * and that msg->sol points to the beginning of the response.
943 * If a complete line is found (which implies that at least one CR or LF is
944 * found before <end>, the updated <ptr> is returned, otherwise NULL is
945 * returned indicating an incomplete line (which does not mean that parts have
946 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
947 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
948 * upon next call.
949 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]950 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]951 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
952 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]953 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]954 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]955const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]956 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]957 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]958{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]959 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]960
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]961 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]962 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]963 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]964 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]965 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
966
967 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]968 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]969 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
970 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]971 state = HTTP_MSG_ERROR;
972 break;
973
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]974 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]975 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]976 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]977 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]978 goto http_msg_rpcode;
979 }
980 if (likely(HTTP_IS_SPHT(*ptr)))
981 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
982 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]983 state = HTTP_MSG_ERROR;
984 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]985
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]986 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]987 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]988 if (likely(!HTTP_IS_LWS(*ptr)))
989 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
990
991 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]992 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]993 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
994 }
995
996 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]997 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]998 http_msg_rsp_reason:
999 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1000 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1001 msg->sl.st.r_l = 0;
1002 goto http_msg_rpline_eol;
1003
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1004 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1005 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1006 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1007 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1008 goto http_msg_rpreason;
1009 }
1010 if (likely(HTTP_IS_SPHT(*ptr)))
1011 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1012 /* so it's a CR/LF, so there is no reason phrase */
1013 goto http_msg_rsp_reason;
1014
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1015 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1016 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1017 if (likely(!HTTP_IS_CRLF(*ptr)))
1018 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1019 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1020 http_msg_rpline_eol:
1021 /* We have seen the end of line. Note that we do not
1022 * necessarily have the \n yet, but at least we know that we
1023 * have EITHER \r OR \n, otherwise the response would not be
1024 * complete. We can then record the response length and return
1025 * to the caller which will be able to register it.
1026 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1027 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1028 return ptr;
1029
1030#ifdef DEBUG_FULL
1031 default:
1032 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1033 exit(1);
1034#endif
1035 }
1036
1037 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1038 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1039 if (ret_state)
1040 *ret_state = state;
1041 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1042 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1043 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1044}
1045
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1046/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1047 * This function parses a request line between <ptr> and <end>, starting with
1048 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1049 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1050 * will give undefined results.
1051 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1052 * and that msg->sol points to the beginning of the request.
1053 * If a complete line is found (which implies that at least one CR or LF is
1054 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1055 * returned indicating an incomplete line (which does not mean that parts have
1056 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1057 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1058 * upon next call.
1059 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1060 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1061 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1062 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1063 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1064 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1065const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1066 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1067 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1068{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1069 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1070
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1071 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1073 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1074 if (likely(HTTP_IS_TOKEN(*ptr)))
1075 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1077 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1078 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1079 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1080 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1081
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1082 if (likely(HTTP_IS_CRLF(*ptr))) {
1083 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1084 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1085 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1086 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1087 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1088 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1089 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1090 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1091 msg->sl.rq.v_l = 0;
1092 goto http_msg_rqline_eol;
1093 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1094 state = HTTP_MSG_ERROR;
1095 break;
1096
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1097 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1098 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1099 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1100 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 goto http_msg_rquri;
1102 }
1103 if (likely(HTTP_IS_SPHT(*ptr)))
1104 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1105 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1106 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1107
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1108 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1109 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1110 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1111 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1112
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1113 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1114 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1115 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1116 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1117
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1118 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1119 /* non-ASCII chars are forbidden unless option
1120 * accept-invalid-http-request is enabled in the frontend.
1121 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1122 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1123 if (msg->err_pos < -1)
1124 goto invalid_char;
1125 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1126 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1127 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1128 }
1129
1130 if (likely(HTTP_IS_CRLF(*ptr))) {
1131 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1132 goto http_msg_req09_uri_e;
1133 }
1134
1135 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1136 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1137 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1138 state = HTTP_MSG_ERROR;
1139 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1140
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1141 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1142 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1143 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1144 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1145 goto http_msg_rqver;
1146 }
1147 if (likely(HTTP_IS_SPHT(*ptr)))
1148 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1149 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1150 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1151
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1152 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1153 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1154 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1155 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1156
1157 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1158 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1159 http_msg_rqline_eol:
1160 /* We have seen the end of line. Note that we do not
1161 * necessarily have the \n yet, but at least we know that we
1162 * have EITHER \r OR \n, otherwise the request would not be
1163 * complete. We can then record the request length and return
1164 * to the caller which will be able to register it.
1165 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1166 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1167 return ptr;
1168 }
1169
1170 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1171 state = HTTP_MSG_ERROR;
1172 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1173
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1174#ifdef DEBUG_FULL
1175 default:
1176 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1177 exit(1);
1178#endif
1179 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1180
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1181 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1182 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1183 if (ret_state)
1184 *ret_state = state;
1185 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1186 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1187 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1188}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1189
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1190/*
1191 * Returns the data from Authorization header. Function may be called more
1192 * than once so data is stored in txn->auth_data. When no header is found
1193 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1194 * searching again for something we are unable to find anyway.
1195 */
1196
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1197char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1198
1199int
1200get_http_auth(struct session *s)
1201{
1202
1203 struct http_txn *txn = &s->txn;
1204 struct chunk auth_method;
1205 struct hdr_ctx ctx;
1206 char *h, *p;
1207 int len;
1208
1209#ifdef DEBUG_AUTH
1210 printf("Auth for session %p: %d\n", s, txn->auth.method);
1211#endif
1212
1213 if (txn->auth.method == HTTP_AUTH_WRONG)
1214 return 0;
1215
1216 if (txn->auth.method)
1217 return 1;
1218
1219 txn->auth.method = HTTP_AUTH_WRONG;
1220
1221 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1222
1223 if (txn->flags & TX_USE_PX_CONN) {
1224 h = "Proxy-Authorization";
1225 len = strlen(h);
1226 } else {
1227 h = "Authorization";
1228 len = strlen(h);
1229 }
1230
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1231 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]1232 return 0;
1233
1234 h = ctx.line + ctx.val;
1235
1236 p = memchr(h, ' ', ctx.vlen);
1237 if (!p || p == h)
1238 return 0;
1239
1240 chunk_initlen(&auth_method, h, 0, p-h);
1241 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1242
1243 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1244
1245 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1246 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1247
1248 if (len < 0)
1249 return 0;
1250
1251
1252 get_http_auth_buff[len] = '\0';
1253
1254 p = strchr(get_http_auth_buff, ':');
1255
1256 if (!p)
1257 return 0;
1258
1259 txn->auth.user = get_http_auth_buff;
1260 *p = '\0';
1261 txn->auth.pass = p+1;
1262
1263 txn->auth.method = HTTP_AUTH_BASIC;
1264 return 1;
1265 }
1266
1267 return 0;
1268}
1269
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1270
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1271/*
1272 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1273 * depending on the initial msg->msg_state. The caller is responsible for
1274 * ensuring that the message does not wrap. The function can be preempted
1275 * everywhere when data are missing and recalled at the exact same location
1276 * with no information loss. The message may even be realigned between two
1277 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1278 * 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]1279 * fields. Note that msg->sol will be initialized after completing the first
1280 * state, so that none of the msg pointers has to be initialized prior to the
1281 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1282 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1283void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1284{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1285 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1286 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1287 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1288
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1289 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1290 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1291 ptr = buf->p + msg->next;
1292 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1293
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1294 if (unlikely(ptr >= end))
1295 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1296
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1297 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1298 /*
1299 * First, states that are specific to the response only.
1300 * We check them first so that request and headers are
1301 * closer to each other (accessed more often).
1302 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1303 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1304 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1306 /* we have a start of message, but we have to check
1307 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1308 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1309 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1310 if (unlikely(ptr != buf->p)) {
1311 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1312 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1313 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1314 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1315 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1316 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1317 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1318 hdr_idx_init(idx);
1319 state = HTTP_MSG_RPVER;
1320 goto http_msg_rpver;
1321 }
1322
1323 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1324 goto http_msg_invalid;
1325
1326 if (unlikely(*ptr == '\n'))
1327 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1328 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1329 /* stop here */
1330
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1331 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1332 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1333 EXPECT_LF_HERE(ptr, http_msg_invalid);
1334 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1335 /* stop here */
1336
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1337 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1338 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1339 case HTTP_MSG_RPVER_SP:
1340 case HTTP_MSG_RPCODE:
1341 case HTTP_MSG_RPCODE_SP:
1342 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1343 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1344 state, ptr, end,
1345 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1346 if (unlikely(!ptr))
1347 return;
1348
1349 /* we have a full response and we know that we have either a CR
1350 * or an LF at <ptr>.
1351 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1352 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1353
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1354 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1355 if (likely(*ptr == '\r'))
1356 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1357 goto http_msg_rpline_end;
1358
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1359 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1360 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1361 /* msg->sol must point to the first of CR or LF. */
1362 EXPECT_LF_HERE(ptr, http_msg_invalid);
1363 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1364 /* stop here */
1365
1366 /*
1367 * Second, states that are specific to the request only
1368 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1369 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1370 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1371 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1372 /* we have a start of message, but we have to check
1373 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1374 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1375 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1376 if (likely(ptr != buf->p)) {
1377 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1378 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1379 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1380 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1381 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1382 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1383 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1384 state = HTTP_MSG_RQMETH;
1385 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1387
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1388 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1389 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1390
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1391 if (unlikely(*ptr == '\n'))
1392 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1393 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1394 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1395
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1396 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1397 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1398 EXPECT_LF_HERE(ptr, http_msg_invalid);
1399 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1401
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1402 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1403 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 case HTTP_MSG_RQMETH_SP:
1405 case HTTP_MSG_RQURI:
1406 case HTTP_MSG_RQURI_SP:
1407 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1408 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1409 state, ptr, end,
1410 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1411 if (unlikely(!ptr))
1412 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1413
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1414 /* we have a full request and we know that we have either a CR
1415 * or an LF at <ptr>.
1416 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1417 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1418
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1419 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1420 if (likely(*ptr == '\r'))
1421 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1423
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1424 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1425 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1426 /* check for HTTP/0.9 request : no version information available.
1427 * msg->sol must point to the first of CR or LF.
1428 */
1429 if (unlikely(msg->sl.rq.v_l == 0))
1430 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1431
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1432 EXPECT_LF_HERE(ptr, http_msg_invalid);
1433 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1434 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1435
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 /*
1437 * Common states below
1438 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1439 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1440 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1441 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1442 if (likely(!HTTP_IS_CRLF(*ptr))) {
1443 goto http_msg_hdr_name;
1444 }
1445
1446 if (likely(*ptr == '\r'))
1447 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1448 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1449
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1450 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1451 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1452 /* assumes msg->sol points to the first char */
1453 if (likely(HTTP_IS_TOKEN(*ptr)))
1454 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1455
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1456 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1457 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]1458
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1459 if (likely(msg->err_pos < -1) || *ptr == '\n')
1460 goto http_msg_invalid;
1461
1462 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1463 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1464
1465 /* and we still accept this non-token character */
1466 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1467
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1468 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1469 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1470 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1471 if (likely(HTTP_IS_SPHT(*ptr)))
1472 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]1473
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1474 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1475 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1476
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 if (likely(!HTTP_IS_CRLF(*ptr))) {
1478 goto http_msg_hdr_val;
1479 }
1480
1481 if (likely(*ptr == '\r'))
1482 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1483 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1484
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1485 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1486 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 EXPECT_LF_HERE(ptr, http_msg_invalid);
1488 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]1489
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1490 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1491 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 if (likely(HTTP_IS_SPHT(*ptr))) {
1493 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1494 for (; buf->p + msg->sov < ptr; msg->sov++)
1495 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 goto http_msg_hdr_l1_sp;
1497 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1498 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1499 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1500 goto http_msg_complete_header;
1501
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1503 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1504 /* assumes msg->sol points to the first char, and msg->sov
1505 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 */
1507 if (likely(!HTTP_IS_CRLF(*ptr)))
1508 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1509
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1510 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1511 /* Note: we could also copy eol into ->eoh so that we have the
1512 * real header end in case it ends with lots of LWS, but is this
1513 * really needed ?
1514 */
1515 if (likely(*ptr == '\r'))
1516 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1517 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1518
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1519 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1520 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 EXPECT_LF_HERE(ptr, http_msg_invalid);
1522 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]1523
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1525 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1526 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1527 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1528 for (; buf->p + msg->eol < ptr; msg->eol++)
1529 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 goto http_msg_hdr_val;
1531 }
1532 http_msg_complete_header:
1533 /*
1534 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1535 * Assumes msg->sol points to the first char, msg->sov points
1536 * to the first character of the value and msg->eol to the
1537 * first CR or LF so we know how the line ends. We insert last
1538 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1540 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 idx, idx->tail) < 0))
1542 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1543
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1544 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1545 if (likely(!HTTP_IS_CRLF(*ptr))) {
1546 goto http_msg_hdr_name;
1547 }
1548
1549 if (likely(*ptr == '\r'))
1550 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1551 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1552
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1554 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1555 /* Assumes msg->sol points to the first of either CR or LF */
1556 EXPECT_LF_HERE(ptr, http_msg_invalid);
1557 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1558 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1559 msg->eoh = msg->sol;
1560 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1561 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1563
1564 case HTTP_MSG_ERROR:
1565 /* this may only happen if we call http_msg_analyser() twice with an error */
1566 break;
1567
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1568#ifdef DEBUG_FULL
1569 default:
1570 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1571 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1572#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1573 }
1574 http_msg_ood:
1575 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1576 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1577 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1578 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1579
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1580 http_msg_invalid:
1581 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1582 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1583 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1584 return;
1585}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1586
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1587/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1588 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1589 * nothing is done and 1 is returned.
1590 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1591static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1592{
1593 int delta;
1594 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1595 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1596
1597 if (msg->sl.rq.v_l != 0)
1598 return 1;
1599
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1600 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1601 delta = 0;
1602
1603 if (msg->sl.rq.u_l == 0) {
1604 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1605 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1606 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1607 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1608 }
1609 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1610 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]1611 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1612 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1613 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1614 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1615 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1616 NULL, NULL);
1617 if (unlikely(!cur_end))
1618 return 0;
1619
1620 /* we have a full HTTP/1.0 request now and we know that
1621 * we have either a CR or an LF at <ptr>.
1622 */
1623 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1624 return 1;
1625}
1626
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1627/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1628 * and "keep-alive" values. If we already know that some headers may safely
1629 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1630 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1631 * - 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]1632 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1633 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1634 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1635 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1636 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1637 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1638void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1639{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1640 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1641 const char *hdr_val = "Connection";
1642 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1643
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1644 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1645 return;
1646
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1647 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1648 hdr_val = "Proxy-Connection";
1649 hdr_len = 16;
1650 }
1651
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1652 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1653 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1654 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]1655 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1656 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1657 if (to_del & 2)
1658 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1659 else
1660 txn->flags |= TX_CON_KAL_SET;
1661 }
1662 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1663 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1664 if (to_del & 1)
1665 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1666 else
1667 txn->flags |= TX_CON_CLO_SET;
1668 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1669 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1670 txn->flags |= TX_HDR_CONN_UPG;
1671 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1672 }
1673
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1674 txn->flags |= TX_HDR_CONN_PRS;
1675 return;
1676}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1677
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1678/* Apply desired changes on the Connection: header. Values may be removed and/or
1679 * added depending on the <wanted> flags, which are exclusively composed of
1680 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1681 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1682 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1683void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1684{
1685 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1686 const char *hdr_val = "Connection";
1687 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1688
1689 ctx.idx = 0;
1690
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1691
1692 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1693 hdr_val = "Proxy-Connection";
1694 hdr_len = 16;
1695 }
1696
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1697 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1698 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]1699 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1700 if (wanted & TX_CON_KAL_SET)
1701 txn->flags |= TX_CON_KAL_SET;
1702 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1703 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1704 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1705 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1706 if (wanted & TX_CON_CLO_SET)
1707 txn->flags |= TX_CON_CLO_SET;
1708 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1709 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1710 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1711 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1712
1713 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1714 return;
1715
1716 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1717 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1718 hdr_val = "Connection: close";
1719 hdr_len = 17;
1720 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1721 hdr_val = "Proxy-Connection: close";
1722 hdr_len = 23;
1723 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1724 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1725 }
1726
1727 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1728 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1729 hdr_val = "Connection: keep-alive";
1730 hdr_len = 22;
1731 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1732 hdr_val = "Proxy-Connection: keep-alive";
1733 hdr_len = 28;
1734 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1735 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1736 }
1737 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1738}
1739
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1740/* 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]1741 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1742 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1743 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1744 * 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]1745 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1746static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1747{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1748 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1749 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1750 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1751 const char *end = buf->data + buf->size;
1752 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1753 unsigned int chunk = 0;
1754
1755 /* The chunk size is in the following form, though we are only
1756 * interested in the size and CRLF :
1757 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1758 */
1759 while (1) {
1760 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1761 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1762 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1763 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1764 if (c < 0) /* not a hex digit anymore */
1765 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1766 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1767 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1768 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1769 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1770 chunk = (chunk << 4) + c;
1771 }
1772
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1773 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1774 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1775 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1776
1777 while (http_is_spht[(unsigned char)*ptr]) {
1778 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1779 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1780 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1781 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1782 }
1783
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1784 /* Up to there, we know that at least one byte is present at *ptr. Check
1785 * for the end of chunk size.
1786 */
1787 while (1) {
1788 if (likely(HTTP_IS_CRLF(*ptr))) {
1789 /* we now have a CR or an LF at ptr */
1790 if (likely(*ptr == '\r')) {
1791 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1792 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1793 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1794 return 0;
1795 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1796
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1797 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1798 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1799 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1800 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1801 /* done */
1802 break;
1803 }
1804 else if (*ptr == ';') {
1805 /* chunk extension, ends at next CRLF */
1806 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1807 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1808 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1809 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1810
1811 while (!HTTP_IS_CRLF(*ptr)) {
1812 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1813 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1814 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1815 return 0;
1816 }
1817 /* we have a CRLF now, loop above */
1818 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1819 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1820 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1821 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1822 }
1823
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1824 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1825 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1827 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1828 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1829 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1830 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1831 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1832 msg->chunk_len = chunk;
1833 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1834 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1835 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1836 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1837 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1838 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1839}
1840
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1841/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1842 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1843 * the trailers is found, it is automatically scheduled to be forwarded,
1844 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1845 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1846 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1847 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1848 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1849 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1850 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1851 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1852 * matches the length of trailers already parsed and not forwarded. It is also
1853 * important to note that this function is designed to be able to parse wrapped
1854 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1855 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1856static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1857{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1858 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1859
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1860 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1861 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1862 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1863 const char *ptr = b_ptr(buf, msg->next);
1864 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1865 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1866
1867 /* scan current line and stop at LF or CRLF */
1868 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1869 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1870 return 0;
1871
1872 if (*ptr == '\n') {
1873 if (!p1)
1874 p1 = ptr;
1875 p2 = ptr;
1876 break;
1877 }
1878
1879 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1880 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1881 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1882 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1883 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 p1 = ptr;
1885 }
1886
1887 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1888 if (ptr >= buf->data + buf->size)
1889 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1890 }
1891
1892 /* after LF; point to beginning of next line */
1893 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1894 if (p2 >= buf->data + buf->size)
1895 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1896
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1897 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1898 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1899 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1900
1901 /* schedule this line for forwarding */
1902 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1903 if (msg->sov >= buf->size)
1904 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1905
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1906 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1907 /* LF/CRLF at beginning of line => end of trailers at p2.
1908 * Everything was scheduled for forwarding, there's nothing
1909 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1910 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1911 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1912 msg->msg_state = HTTP_MSG_DONE;
1913 return 1;
1914 }
1915 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1916 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1917 }
1918}
1919
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1920/* 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]1921 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1922 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1923 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1924 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1925 * not enough data are available, the function does not change anything and
1926 * returns zero. If a parse error is encountered, the function returns < 0 and
1927 * does not change anything. Note: this function is designed to parse wrapped
1928 * CRLF at the end of the buffer.
1929 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1930static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1931{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1932 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1933 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1934 int bytes;
1935
1936 /* NB: we'll check data availabilty at the end. It's not a
1937 * problem because whatever we match first will be checked
1938 * against the correct length.
1939 */
1940 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1941 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1942 if (*ptr == '\r') {
1943 bytes++;
1944 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1945 if (ptr >= buf->data + buf->size)
1946 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1947 }
1948
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1949 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1950 return 0;
1951
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1952 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1953 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1954 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1955 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1956
1957 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1958 if (ptr >= buf->data + buf->size)
1959 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1960 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1961 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1962 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1963 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1964 return 1;
1965}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1966
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1967
1968/*
1969 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1970 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1971int select_compression_request_header(struct session *s, struct buffer *req)
1972{
1973 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1974 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1975 struct hdr_ctx ctx;
1976 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1977 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1978
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1979 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1980 * 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]1981 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1982 */
1983 ctx.idx = 0;
1984 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1985 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1986 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
1987 (ctx.vlen < 31 ||
1988 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
1989 ctx.line[ctx.val + 30] < '6' ||
1990 (ctx.line[ctx.val + 30] == '6' &&
1991 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
1992 s->comp_algo = NULL;
1993 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1994 }
1995
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1996 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1997 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]1998 ctx.idx = 0;
1999 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2000 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2001 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2002 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2003
2004 /* remove all occurrences of the header when "compression offload" is set */
2005
2006 if ((s->be->comp && s->be->comp->offload) ||
2007 (s->fe->comp && s->fe->comp->offload)) {
2008 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2009 ctx.idx = 0;
2010 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2011 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2012 }
2013 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2014 return 1;
2015 }
2016 }
2017 }
2018 }
2019
2020 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2021 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2022 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2023 if (comp_algo->add_data == identity_add_data) {
2024 s->comp_algo = comp_algo;
2025 return 1;
2026 }
2027 }
2028 }
2029
2030 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2031 return 0;
2032}
2033
2034/*
2035 * Selects a comression algorithm depending of the server response.
2036 */
2037int select_compression_response_header(struct session *s, struct buffer *res)
2038{
2039 struct http_txn *txn = &s->txn;
2040 struct http_msg *msg = &txn->rsp;
2041 struct hdr_ctx ctx;
2042 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2043
2044 /* no common compression algorithm was found in request header */
2045 if (s->comp_algo == NULL)
2046 goto fail;
2047
2048 /* HTTP < 1.1 should not be compressed */
2049 if (!(msg->flags & HTTP_MSGF_VER_11))
2050 goto fail;
2051
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2052 /* 200 only */
2053 if (txn->status != 200)
2054 goto fail;
2055
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2056 /* Content-Length is null */
2057 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2058 goto fail;
2059
2060 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2061 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2062 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2063 goto fail;
2064
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2065 /* no compression when Cache-Control: no-transform is present in the message */
2066 ctx.idx = 0;
2067 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2068 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2069 goto fail;
2070 }
2071
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2072 comp_type = NULL;
2073
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2074 /* we don't want to compress multipart content-types, nor content-types that are
2075 * not listed in the "compression type" directive if any. If no content-type was
2076 * found but configuration requires one, we don't compress either. Backend has
2077 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2078 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2079 ctx.idx = 0;
2080 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2081 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2082 goto fail;
2083
2084 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2085 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2086 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2087 if (ctx.vlen >= comp_type->name_len &&
2088 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2089 /* this Content-Type should be compressed */
2090 break;
2091 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2092 /* this Content-Type should not be compressed */
2093 if (comp_type == NULL)
2094 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2095 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2096 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2097 else { /* no content-type header */
2098 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2099 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2100 }
2101
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2102 /* limit compression rate */
2103 if (global.comp_rate_lim > 0)
2104 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2105 goto fail;
2106
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2107 /* limit cpu usage */
2108 if (idle_pct < compress_min_idle)
2109 goto fail;
2110
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2111 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2112 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2113 goto fail;
2114
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2115 s->flags |= SN_COMP_READY;
2116
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2117 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2118 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2119 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2120 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2121
2122 /* add Transfer-Encoding header */
2123 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2124 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2125
2126 /*
2127 * Add Content-Encoding header when it's not identity encoding.
2128 * RFC 2616 : Identity encoding: This content-coding is used only in the
2129 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2130 * header.
2131 */
2132 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2133 trash.len = 18;
2134 memcpy(trash.str, "Content-Encoding: ", trash.len);
2135 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2136 trash.len += s->comp_algo->name_len;
2137 trash.str[trash.len] = '\0';
2138 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2139 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2140 return 1;
2141
2142fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2143 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2144 return 0;
2145}
2146
2147
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2148/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2149 * processing can continue on next analysers, or zero if it either needs more
2150 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2151 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2152 * when it has nothing left to do, and may remove any analyser when it wants to
2153 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2154 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2155int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2156{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2157 /*
2158 * We will parse the partial (or complete) lines.
2159 * We will check the request syntax, and also join multi-line
2160 * headers. An index of all the lines will be elaborated while
2161 * parsing.
2162 *
2163 * For the parsing, we use a 28 states FSM.
2164 *
2165 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2166 * req->buf->p = beginning of request
2167 * req->buf->p + msg->eoh = end of processed headers / start of current one
2168 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2169 * msg->eol = end of current header or line (LF or CRLF)
2170 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2171 *
2172 * At end of parsing, we may perform a capture of the error (if any), and
2173 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2174 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2175 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2176 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2177
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2178 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2179 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2180 struct http_txn *txn = &s->txn;
2181 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2182 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2183
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2184 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]2185 now_ms, __FUNCTION__,
2186 s,
2187 req,
2188 req->rex, req->wex,
2189 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2190 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2191 req->analysers);
2192
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2193 /* we're speaking HTTP here, so let's speak HTTP to the client */
2194 s->srv_error = http_return_srv_error;
2195
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2196 /* There's a protected area at the end of the buffer for rewriting
2197 * purposes. We don't want to start to parse the request if the
2198 * protected area is affected, because we may have to move processed
2199 * data later, which is much more complicated.
2200 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2201 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2202 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2203 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2204 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2205 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2206 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2207 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2208 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2209 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2210 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2211 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2212 return 0;
2213 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2214 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2215 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2216 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2217 }
2218
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2219 /* Note that we have the same problem with the response ; we
2220 * may want to send a redirect, error or anything which requires
2221 * some spare space. So we'll ensure that we have at least
2222 * maxrewrite bytes available in the response buffer before
2223 * processing that one. This will only affect pipelined
2224 * keep-alive requests.
2225 */
2226 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2227 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2228 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2229 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2230 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2231 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]2232 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2233 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2234 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2235 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2236 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2237 return 0;
2238 }
2239 }
2240
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2241 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2242 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2243 }
2244
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2245 /* 1: we might have to print this header in debug mode */
2246 if (unlikely((global.mode & MODE_DEBUG) &&
2247 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2248 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2249 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2250
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2251 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2252 /* this is a bit complex : in case of error on the request line,
2253 * we know that rq.l is still zero, so we display only the part
2254 * up to the end of the line (truncated by debug_hdr).
2255 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2256 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2257 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2258
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2259 sol += hdr_idx_first_pos(&txn->hdr_idx);
2260 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2261
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2262 while (cur_idx) {
2263 eol = sol + txn->hdr_idx.v[cur_idx].len;
2264 debug_hdr("clihdr", s, sol, eol);
2265 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2266 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2267 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2268 }
2269
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2270
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2271 /*
2272 * Now we quickly check if we have found a full valid request.
2273 * If not so, we check the FD and buffer states before leaving.
2274 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2275 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2276 * requests are checked first. When waiting for a second request
2277 * on a keep-alive session, if we encounter and error, close, t/o,
2278 * we note the error in the session flags but don't set any state.
2279 * Since the error will be noted there, it will not be counted by
2280 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2281 * Last, we may increase some tracked counters' http request errors on
2282 * the cases that are deliberately the client's fault. For instance,
2283 * a timeout or connection reset is not counted as an error. However
2284 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2285 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2286
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2287 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2288 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2289 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2290 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2291 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2292 session_inc_http_req_ctr(s);
2293 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2294 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2295 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2296 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2297
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2298 /* 1: Since we are in header mode, if there's no space
2299 * left for headers, we won't be able to free more
2300 * later, so the session will never terminate. We
2301 * must terminate it now.
2302 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2303 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2304 /* FIXME: check if URI is set and return Status
2305 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2306 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2307 session_inc_http_req_ctr(s);
2308 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2309 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2310 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2311 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2312 goto return_bad_req;
2313 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2314
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2315 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2316 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2317 if (!(s->flags & SN_ERR_MASK))
2318 s->flags |= SN_ERR_CLICL;
2319
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2320 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2321 goto failed_keep_alive;
2322
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2323 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2324 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2325 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]2326 session_inc_http_err_ctr(s);
2327 }
2328
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2329 txn->status = 400;
2330 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 msg->msg_state = HTTP_MSG_ERROR;
2332 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2333
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2334 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2335 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2336 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2337 if (s->listener->counters)
2338 s->listener->counters->failed_req++;
2339
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2340 if (!(s->flags & SN_FINST_MASK))
2341 s->flags |= SN_FINST_R;
2342 return 0;
2343 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2345 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2346 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]2347 if (!(s->flags & SN_ERR_MASK))
2348 s->flags |= SN_ERR_CLITO;
2349
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2350 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2351 goto failed_keep_alive;
2352
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2354 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2355 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]2356 session_inc_http_err_ctr(s);
2357 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2358 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2359 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2360 msg->msg_state = HTTP_MSG_ERROR;
2361 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2362
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2363 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2364 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2365 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2366 if (s->listener->counters)
2367 s->listener->counters->failed_req++;
2368
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2369 if (!(s->flags & SN_FINST_MASK))
2370 s->flags |= SN_FINST_R;
2371 return 0;
2372 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2373
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2374 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2375 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2376 if (!(s->flags & SN_ERR_MASK))
2377 s->flags |= SN_ERR_CLICL;
2378
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2379 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2380 goto failed_keep_alive;
2381
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2382 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2383 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]2384 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2385 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2386 msg->msg_state = HTTP_MSG_ERROR;
2387 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2388
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2389 session_inc_http_err_ctr(s);
2390 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2391 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2392 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2393 if (s->listener->counters)
2394 s->listener->counters->failed_req++;
2395
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2396 if (!(s->flags & SN_FINST_MASK))
2397 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2398 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2399 }
2400
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2401 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2402 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2403 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2404#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2405 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2406 /* We need more data, we have to re-enable quick-ack in case we
2407 * previously disabled it, otherwise we might cause the client
2408 * to delay next data.
2409 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2410 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]2411 }
2412#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2413
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2414 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2415 /* If the client starts to talk, let's fall back to
2416 * request timeout processing.
2417 */
2418 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2419 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2420 }
2421
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2422 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2423 if (!tick_isset(req->analyse_exp)) {
2424 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2425 (txn->flags & TX_WAIT_NEXT_RQ) &&
2426 tick_isset(s->be->timeout.httpka))
2427 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2428 else
2429 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2430 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2431
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2432 /* we're not ready yet */
2433 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2434
2435 failed_keep_alive:
2436 /* Here we process low-level errors for keep-alive requests. In
2437 * short, if the request is not the first one and it experiences
2438 * a timeout, read error or shutdown, we just silently close so
2439 * that the client can try again.
2440 */
2441 txn->status = 0;
2442 msg->msg_state = HTTP_MSG_RQBEFORE;
2443 req->analysers = 0;
2444 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2445 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2446 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2447 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2448 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2449
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2450 /* OK now we have a complete HTTP request with indexed headers. Let's
2451 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2452 * 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]2453 * 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]2454 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2455 * byte after the last LF. msg->sov points to the first byte of data.
2456 * msg->eol cannot be trusted because it may have been left uninitialized
2457 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2458 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2459
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2460 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2461 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2462
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2463 if (txn->flags & TX_WAIT_NEXT_RQ) {
2464 /* kill the pending keep-alive timeout */
2465 txn->flags &= ~TX_WAIT_NEXT_RQ;
2466 req->analyse_exp = TICK_ETERNITY;
2467 }
2468
2469
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2470 /* Maybe we found in invalid header name while we were configured not
2471 * to block on that, so we have to capture it now.
2472 */
2473 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2474 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]2475
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2476 /*
2477 * 1: identify the method
2478 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2479 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2480
2481 /* we can make use of server redirect on GET and HEAD */
2482 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2483 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2484
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2485 /*
2486 * 2: check if the URI matches the monitor_uri.
2487 * We have to do this for every request which gets in, because
2488 * the monitor-uri is defined by the frontend.
2489 */
2490 if (unlikely((s->fe->monitor_uri_len != 0) &&
2491 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2492 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2493 s->fe->monitor_uri,
2494 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2495 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2496 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2497 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2498 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2499
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2500 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2501 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2502
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2503 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2504 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2505 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]2506
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2507 ret = acl_pass(ret);
2508 if (cond->pol == ACL_COND_UNLESS)
2509 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2510
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2511 if (ret) {
2512 /* we fail this request, let's return 503 service unavail */
2513 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2514 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2515 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2516 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2517 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 /* nothing to fail, let's reply normaly */
2520 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2521 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2522 goto return_prx_cond;
2523 }
2524
2525 /*
2526 * 3: Maybe we have to copy the original REQURI for the logs ?
2527 * Note: we cannot log anymore if the request has been
2528 * classified as invalid.
2529 */
2530 if (unlikely(s->logs.logwait & LW_REQ)) {
2531 /* we have a complete HTTP request that we must log */
2532 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2533 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2534
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 if (urilen >= REQURI_LEN)
2536 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2537 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2538 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2539
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2540 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2541 s->do_log(s);
2542 } else {
2543 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2544 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2545 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2546
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2547 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
2548 s->unique_id = pool_alloc2(pool2_uniqueid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2549
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2550 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2551 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2552 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2553
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2554 /* ... and check if the request is HTTP/1.1 or above */
2555 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2556 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2557 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2558 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2559 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2560
2561 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2562 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]2563
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2564 /* if the frontend has "option http-use-proxy-header", we'll check if
2565 * we have what looks like a proxied connection instead of a connection,
2566 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2567 * Note that this is *not* RFC-compliant, however browsers and proxies
2568 * happen to do that despite being non-standard :-(
2569 * We consider that a request not beginning with either '/' or '*' is
2570 * a proxied connection, which covers both "scheme://location" and
2571 * CONNECT ip:port.
2572 */
2573 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2574 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2575 txn->flags |= TX_USE_PX_CONN;
2576
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2577 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2578 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2579
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2580 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2581 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2582 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2583 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2584
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2585 /* 6: determine the transfer-length.
2586 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2587 * the presence of a message-body in a REQUEST and its transfer length
2588 * must be determined that way (in order of precedence) :
2589 * 1. The presence of a message-body in a request is signaled by the
2590 * inclusion of a Content-Length or Transfer-Encoding header field
2591 * in the request's header fields. When a request message contains
2592 * both a message-body of non-zero length and a method that does
2593 * not define any semantics for that request message-body, then an
2594 * origin server SHOULD either ignore the message-body or respond
2595 * with an appropriate error message (e.g., 413). A proxy or
2596 * gateway, when presented the same request, SHOULD either forward
2597 * the request inbound with the message- body or ignore the
2598 * message-body when determining a response.
2599 *
2600 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2601 * and the "chunked" transfer-coding (Section 6.2) is used, the
2602 * transfer-length is defined by the use of this transfer-coding.
2603 * If a Transfer-Encoding header field is present and the "chunked"
2604 * transfer-coding is not present, the transfer-length is defined
2605 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2606 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2607 * 3. If a Content-Length header field is present, its decimal value in
2608 * OCTETs represents both the entity-length and the transfer-length.
2609 * If a message is received with both a Transfer-Encoding header
2610 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2611 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2612 * 4. By the server closing the connection. (Closing the connection
2613 * cannot be used to indicate the end of a request body, since that
2614 * would leave no possibility for the server to send back a response.)
2615 *
2616 * Whenever a transfer-coding is applied to a message-body, the set of
2617 * transfer-codings MUST include "chunked", unless the message indicates
2618 * it is terminated by closing the connection. When the "chunked"
2619 * transfer-coding is used, it MUST be the last transfer-coding applied
2620 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2621 */
2622
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2623 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2624 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2625 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2626 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2627 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2628 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2629 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2630 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2631 /* bad transfer-encoding (chunked followed by something else) */
2632 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2633 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2634 break;
2635 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2636 }
2637
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2638 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2639 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2640 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2641 signed long long cl;
2642
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2643 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2644 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2645 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2646 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2647
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2648 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2649 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2650 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2651 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2652
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2653 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2654 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2655 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2656 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2657
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2658 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2659 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2660 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2661 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2662
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2663 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2664 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2665 }
2666
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2667 /* bodyless requests have a known length */
2668 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2669 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2670
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2671 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2672 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2673 req->analyse_exp = TICK_ETERNITY;
2674 return 1;
2675
2676 return_bad_req:
2677 /* We centralize bad requests processing here */
2678 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2679 /* we detected a parsing error. We want to archive this request
2680 * in the dedicated proxy area for later troubleshooting.
2681 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2682 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]2683 }
2684
2685 txn->req.msg_state = HTTP_MSG_ERROR;
2686 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2687 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2688
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2689 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2690 if (s->listener->counters)
2691 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2692
2693 return_prx_cond:
2694 if (!(s->flags & SN_ERR_MASK))
2695 s->flags |= SN_ERR_PRXCOND;
2696 if (!(s->flags & SN_FINST_MASK))
2697 s->flags |= SN_FINST_R;
2698
2699 req->analysers = 0;
2700 req->analyse_exp = TICK_ETERNITY;
2701 return 0;
2702}
2703
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2704/* We reached the stats page through a POST request.
2705 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2706 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2707 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2708int 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]2709{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2710 struct proxy *px = NULL;
2711 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2712
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2713 char key[LINESIZE];
2714 int action = ST_ADM_ACTION_NONE;
2715 int reprocess = 0;
2716
2717 int total_servers = 0;
2718 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2719
2720 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2721 char *st_cur_param = NULL;
2722 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2723
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2724 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2725 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2726
2727 cur_param = next_param = end_params;
2728
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2729 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2730 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2731 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2732 return 1;
2733 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2734 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2735 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2736 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2737 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2738 }
2739
2740 *end_params = '\0';
2741
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2742 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2743
2744 /*
2745 * Parse the parameters in reverse order to only store the last value.
2746 * From the html form, the backend and the action are at the end.
2747 */
2748 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2749 char *value;
2750 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2751
2752 cur_param--;
2753 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2754 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2755 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2756 poffset = (cur_param != first_param ? 1 : 0);
2757 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2758 if ((plen > 0) && (plen <= sizeof(key))) {
2759 strncpy(key, cur_param + poffset, plen);
2760 key[plen - 1] = '\0';
2761 } else {
2762 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2763 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2764 }
2765
2766 /* Parse the value */
2767 value = key;
2768 while (*value != '\0' && *value != '=') {
2769 value++;
2770 }
2771 if (*value == '=') {
2772 /* Ok, a value is found, we can mark the end of the key */
2773 *value++ = '\0';
2774 }
2775
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2776 if (!url_decode(key) || !url_decode(value))
2777 break;
2778
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2779 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2780 if (!px && (strcmp(key, "b") == 0)) {
2781 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2782 /* the backend name is unknown or ambiguous (duplicate names) */
2783 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2784 goto out;
2785 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2786 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2787 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2788 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2789 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2790 }
2791 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2792 action = ST_ADM_ACTION_ENABLE;
2793 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2794 else if (strcmp(value, "stop") == 0) {
2795 action = ST_ADM_ACTION_STOP;
2796 }
2797 else if (strcmp(value, "start") == 0) {
2798 action = ST_ADM_ACTION_START;
2799 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2800 else if (strcmp(value, "shutdown") == 0) {
2801 action = ST_ADM_ACTION_SHUTDOWN;
2802 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2803 else {
2804 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2805 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2806 }
2807 }
2808 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2809 if (!(px && action)) {
2810 /*
2811 * Indicates that we'll need to reprocess the parameters
2812 * as soon as backend and action are known
2813 */
2814 if (!reprocess) {
2815 st_cur_param = cur_param;
2816 st_next_param = next_param;
2817 }
2818 reprocess = 1;
2819 }
2820 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2821 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2822 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2823 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2824 /* Not already in maintenance, we can change the server state */
2825 sv->state |= SRV_MAINTAIN;
2826 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2827 altered_servers++;
2828 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2829 }
2830 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2831 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2832 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2833 /* Already in maintenance, we can change the server state */
2834 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2835 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2836 altered_servers++;
2837 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2838 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2839 break;
2840 case ST_ADM_ACTION_STOP:
2841 case ST_ADM_ACTION_START:
2842 if (action == ST_ADM_ACTION_START)
2843 sv->uweight = sv->iweight;
2844 else
2845 sv->uweight = 0;
2846
2847 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2848 /* we must take care of not pushing the server to full throttle during slow starts */
2849 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2850 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2851 else
2852 sv->eweight = BE_WEIGHT_SCALE;
2853 sv->eweight *= sv->uweight;
2854 } else {
2855 sv->eweight = sv->uweight;
2856 }
2857
2858 /* static LB algorithms are a bit harder to update */
2859 if (px->lbprm.update_server_eweight)
2860 px->lbprm.update_server_eweight(sv);
2861 else if (sv->eweight) {
2862 if (px->lbprm.set_server_status_up)
2863 px->lbprm.set_server_status_up(sv);
2864 }
2865 else {
2866 if (px->lbprm.set_server_status_down)
2867 px->lbprm.set_server_status_down(sv);
2868 }
2869 altered_servers++;
2870 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2871 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2872 case ST_ADM_ACTION_SHUTDOWN:
2873 if (px->state != PR_STSTOPPED) {
2874 struct session *sess, *sess_bck;
2875
2876 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2877 if (sess->srv_conn == sv)
2878 session_shutdown(sess, SN_ERR_KILLED);
2879
2880 altered_servers++;
2881 total_servers++;
2882 }
2883 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2884 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2885 } else {
2886 /* the server name is unknown or ambiguous (duplicate names) */
2887 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2888 }
2889 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2890 if (reprocess && px && action) {
2891 /* Now, we know the backend and the action chosen by the user.
2892 * We can safely restart from the first server parameter
2893 * to reprocess them
2894 */
2895 cur_param = st_cur_param;
2896 next_param = st_next_param;
2897 reprocess = 0;
2898 goto reprocess_servers;
2899 }
2900
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2901 next_param = cur_param;
2902 }
2903 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2904
2905 if (total_servers == 0) {
2906 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2907 }
2908 else if (altered_servers == 0) {
2909 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2910 }
2911 else if (altered_servers == total_servers) {
2912 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2913 }
2914 else {
2915 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2916 }
2917 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2918 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2919}
2920
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2921/* This function checks whether we need to enable a POST analyser to parse a
2922 * stats request, and also registers the stats I/O handler. It returns zero
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]2923 * if it needs to come back again, otherwise non-zero if it finishes. In the
2924 * latter case, it also clears the request analysers.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2925 */
2926int http_handle_stats(struct session *s, struct channel *req)
2927{
2928 struct stats_admin_rule *stats_admin_rule;
2929 struct stream_interface *si = s->rep->prod;
2930 struct http_txn *txn = &s->txn;
2931 struct http_msg *msg = &txn->req;
2932 struct uri_auth *uri = s->be->uri_auth;
2933
2934 /* now check whether we have some admin rules for this request */
2935 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2936 int ret = 1;
2937
2938 if (stats_admin_rule->cond) {
2939 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2940 ret = acl_pass(ret);
2941 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2942 ret = !ret;
2943 }
2944
2945 if (ret) {
2946 /* no rule, or the rule matches */
2947 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
2948 break;
2949 }
2950 }
2951
2952 /* Was the status page requested with a POST ? */
2953 if (unlikely(txn->meth == HTTP_METH_POST)) {
2954 if (si->applet.ctx.stats.flags & STAT_ADMIN) {
2955 if (msg->msg_state < HTTP_MSG_100_SENT) {
2956 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2957 * send an HTTP/1.1 100 Continue intermediate response.
2958 */
2959 if (msg->flags & HTTP_MSGF_VER_11) {
2960 struct hdr_ctx ctx;
2961 ctx.idx = 0;
2962 /* Expect is allowed in 1.1, look for it */
2963 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2964 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2965 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2966 }
2967 }
2968 msg->msg_state = HTTP_MSG_100_SENT;
2969 s->logs.tv_request = now; /* update the request timer to reflect full request */
2970 }
2971 if (!http_process_req_stat_post(si, txn, req))
2972 return 0; /* we need more data */
2973 }
2974 else
2975 si->applet.ctx.stats.st_code = STAT_STATUS_DENY;
2976
2977 /* We don't want to land on the posted stats page because a refresh will
2978 * repost the data. We don't want this to happen on accident so we redirect
2979 * the browse to the stats page with a GET.
2980 */
2981 chunk_printf(&trash,
Yves Lafon4e8ec502013-03-11 11:06:05 -0400[diff] [blame^]2982 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2983 "Cache-Control: no-cache\r\n"
2984 "Content-Type: text/plain\r\n"
2985 "Connection: close\r\n"
2986 "Location: %s;st=%s\r\n"
2987 "\r\n",
2988 uri->uri_prefix,
2989 ((si->applet.ctx.stats.st_code > STAT_STATUS_INIT) &&
2990 (si->applet.ctx.stats.st_code < STAT_STATUS_SIZE) &&
2991 stat_status_codes[si->applet.ctx.stats.st_code]) ?
2992 stat_status_codes[si->applet.ctx.stats.st_code] :
2993 stat_status_codes[STAT_STATUS_UNKN]);
2994
2995 s->txn.status = 303;
2996 s->logs.tv_request = now;
2997 stream_int_retnclose(req->prod, &trash);
2998 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
2999
3000 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3001 s->fe->fe_counters.intercepted_req++;
3002
3003 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3004 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3005 if (!(s->flags & SN_FINST_MASK))
3006 s->flags |= SN_FINST_R;
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3007 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3008 return 1;
3009 }
3010
3011 /* OK, let's go on now */
3012
3013 chunk_printf(&trash,
3014 "HTTP/1.0 200 OK\r\n"
3015 "Cache-Control: no-cache\r\n"
3016 "Connection: close\r\n"
3017 "Content-Type: %s\r\n",
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]3018 (si->applet.ctx.stats.flags & STAT_FMT_HTML) ? "text/html" : "text/plain");
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3019
3020 if (uri->refresh > 0 && !(si->applet.ctx.stats.flags & STAT_NO_REFRESH))
3021 chunk_appendf(&trash, "Refresh: %d\r\n",
3022 uri->refresh);
3023
3024 chunk_appendf(&trash, "\r\n");
3025
3026 s->txn.status = 200;
3027 s->logs.tv_request = now;
3028
3029 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3030 s->fe->fe_counters.intercepted_req++;
3031
3032 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3033 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3034 if (!(s->flags & SN_FINST_MASK))
3035 s->flags |= SN_FINST_R;
3036
3037 if (s->txn.meth == HTTP_METH_HEAD) {
3038 /* that's all we return in case of HEAD request, so let's immediately close. */
3039 stream_int_retnclose(req->prod, &trash);
3040 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3041 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3042 return 1;
3043 }
3044
3045 /* OK, push the response and hand over to the stats I/O handler */
3046 bi_putchk(s->rep, &trash);
3047
3048 s->task->nice = -32; /* small boost for HTTP statistics */
3049 stream_int_register_handler(s->rep->prod, &http_stats_applet);
3050 s->target = s->rep->prod->conn->target; // for logging only
3051 s->rep->prod->conn->xprt_ctx = s;
3052 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
3053 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3054 return 1;
3055}
3056
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3057/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3058 * transaction <txn>. Returns the first rule that prevents further processing
3059 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
3060 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
3061 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3062 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3063static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3064http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3065{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3066 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3067 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3068
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3069 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3070 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3071 continue;
3072
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3073 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3074 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3075 int ret;
3076
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3077 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]3078 ret = acl_pass(ret);
3079
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3080 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3081 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3082
3083 if (!ret) /* condition not matched */
3084 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3085 }
3086
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3087
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3088 switch (rule->action) {
3089 case HTTP_REQ_ACT_ALLOW:
3090 return NULL; /* "allow" rules are OK */
3091
3092 case HTTP_REQ_ACT_DENY:
3093 txn->flags |= TX_CLDENY;
3094 return rule;
3095
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3096 case HTTP_REQ_ACT_TARPIT:
3097 txn->flags |= TX_CLTARPIT;
3098 return rule;
3099
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3100 case HTTP_REQ_ACT_AUTH:
3101 return rule;
3102
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3103 case HTTP_REQ_ACT_REDIR:
3104 return rule;
3105
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3106 case HTTP_REQ_ACT_SET_HDR:
3107 ctx.idx = 0;
3108 /* remove all occurrences of the header */
3109 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3110 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3111 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3112 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3113 /* now fall through to header addition */
3114
3115 case HTTP_REQ_ACT_ADD_HDR:
3116 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3117 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3118 trash.len = rule->arg.hdr_add.name_len;
3119 trash.str[trash.len++] = ':';
3120 trash.str[trash.len++] = ' ';
3121 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3122 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3123 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3124 }
3125 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3126
3127 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3128 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3129}
3130
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3131
3132/* Perform an HTTP redirect based on the information in <rule>. The function
3133 * returns non-zero on success, or zero in case of a, irrecoverable error such
3134 * as too large a request to build a valid response.
3135 */
3136static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3137{
3138 struct http_msg *msg = &txn->req;
3139 const char *msg_fmt;
3140
3141 /* build redirect message */
3142 switch(rule->code) {
3143 case 303:
3144 msg_fmt = HTTP_303;
3145 break;
3146 case 301:
3147 msg_fmt = HTTP_301;
3148 break;
3149 case 302:
3150 default:
3151 msg_fmt = HTTP_302;
3152 break;
3153 }
3154
3155 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3156 return 0;
3157
3158 switch(rule->type) {
3159 case REDIRECT_TYPE_SCHEME: {
3160 const char *path;
3161 const char *host;
3162 struct hdr_ctx ctx;
3163 int pathlen;
3164 int hostlen;
3165
3166 host = "";
3167 hostlen = 0;
3168 ctx.idx = 0;
3169 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3170 host = ctx.line + ctx.val;
3171 hostlen = ctx.vlen;
3172 }
3173
3174 path = http_get_path(txn);
3175 /* build message using path */
3176 if (path) {
3177 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3178 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3179 int qs = 0;
3180 while (qs < pathlen) {
3181 if (path[qs] == '?') {
3182 pathlen = qs;
3183 break;
3184 }
3185 qs++;
3186 }
3187 }
3188 } else {
3189 path = "/";
3190 pathlen = 1;
3191 }
3192
3193 /* check if we can add scheme + "://" + host + path */
3194 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3195 return 0;
3196
3197 /* add scheme */
3198 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3199 trash.len += rule->rdr_len;
3200
3201 /* add "://" */
3202 memcpy(trash.str + trash.len, "://", 3);
3203 trash.len += 3;
3204
3205 /* add host */
3206 memcpy(trash.str + trash.len, host, hostlen);
3207 trash.len += hostlen;
3208
3209 /* add path */
3210 memcpy(trash.str + trash.len, path, pathlen);
3211 trash.len += pathlen;
3212
3213 /* append a slash at the end of the location is needed and missing */
3214 if (trash.len && trash.str[trash.len - 1] != '/' &&
3215 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3216 if (trash.len > trash.size - 5)
3217 return 0;
3218 trash.str[trash.len] = '/';
3219 trash.len++;
3220 }
3221
3222 break;
3223 }
3224 case REDIRECT_TYPE_PREFIX: {
3225 const char *path;
3226 int pathlen;
3227
3228 path = http_get_path(txn);
3229 /* build message using path */
3230 if (path) {
3231 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3232 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3233 int qs = 0;
3234 while (qs < pathlen) {
3235 if (path[qs] == '?') {
3236 pathlen = qs;
3237 break;
3238 }
3239 qs++;
3240 }
3241 }
3242 } else {
3243 path = "/";
3244 pathlen = 1;
3245 }
3246
3247 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3248 return 0;
3249
3250 /* add prefix. Note that if prefix == "/", we don't want to
3251 * add anything, otherwise it makes it hard for the user to
3252 * configure a self-redirection.
3253 */
3254 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3255 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3256 trash.len += rule->rdr_len;
3257 }
3258
3259 /* add path */
3260 memcpy(trash.str + trash.len, path, pathlen);
3261 trash.len += pathlen;
3262
3263 /* append a slash at the end of the location is needed and missing */
3264 if (trash.len && trash.str[trash.len - 1] != '/' &&
3265 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3266 if (trash.len > trash.size - 5)
3267 return 0;
3268 trash.str[trash.len] = '/';
3269 trash.len++;
3270 }
3271
3272 break;
3273 }
3274 case REDIRECT_TYPE_LOCATION:
3275 default:
3276 if (trash.len + rule->rdr_len > trash.size - 4)
3277 return 0;
3278
3279 /* add location */
3280 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3281 trash.len += rule->rdr_len;
3282 break;
3283 }
3284
3285 if (rule->cookie_len) {
3286 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3287 trash.len += 14;
3288 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3289 trash.len += rule->cookie_len;
3290 memcpy(trash.str + trash.len, "\r\n", 2);
3291 trash.len += 2;
3292 }
3293
3294 /* add end of headers and the keep-alive/close status.
3295 * We may choose to set keep-alive if the Location begins
3296 * with a slash, because the client will come back to the
3297 * same server.
3298 */
3299 txn->status = rule->code;
3300 /* let's log the request time */
3301 s->logs.tv_request = now;
3302
3303 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
3304 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3305 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3306 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3307 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3308 /* keep-alive possible */
3309 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3310 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3311 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3312 trash.len += 30;
3313 } else {
3314 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3315 trash.len += 24;
3316 }
3317 }
3318 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3319 trash.len += 4;
3320 bo_inject(txn->rsp.chn, trash.str, trash.len);
3321 /* "eat" the request */
3322 bi_fast_delete(txn->req.chn->buf, msg->sov);
3323 msg->sov = 0;
3324 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3325 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3326 txn->req.msg_state = HTTP_MSG_CLOSED;
3327 txn->rsp.msg_state = HTTP_MSG_DONE;
3328 } else {
3329 /* keep-alive not possible */
3330 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3331 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3332 trash.len += 29;
3333 } else {
3334 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3335 trash.len += 23;
3336 }
3337 stream_int_retnclose(txn->req.chn->prod, &trash);
3338 txn->req.chn->analysers = 0;
3339 }
3340
3341 if (!(s->flags & SN_ERR_MASK))
3342 s->flags |= SN_ERR_PRXCOND;
3343 if (!(s->flags & SN_FINST_MASK))
3344 s->flags |= SN_FINST_R;
3345
3346 return 1;
3347}
3348
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3349/* This stream analyser runs all HTTP request processing which is common to
3350 * frontends and backends, which means blocking ACLs, filters, connection-close,
3351 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3352 * 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]3353 * either needs more data or wants to immediately abort the request (eg: deny,
3354 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3355 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3356int 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]3357{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3358 struct http_txn *txn = &s->txn;
3359 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3360 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3361 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3362 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3363 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]3364 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3365
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3366 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3367 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3368 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3369 return 0;
3370 }
3371
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3372 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3373 req->analyse_exp = TICK_ETERNITY;
3374
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3375 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]3376 now_ms, __FUNCTION__,
3377 s,
3378 req,
3379 req->rex, req->wex,
3380 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3381 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3382 req->analysers);
3383
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3384 /* first check whether we have some ACLs set to block this request */
3385 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3386 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]3387
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3388 ret = acl_pass(ret);
3389 if (cond->pol == ACL_COND_UNLESS)
3390 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3391
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3392 if (ret) {
3393 txn->status = 403;
3394 /* let's log the request time */
3395 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3396 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3397 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3398 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3399 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3400 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3401
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3402 /* just in case we have some per-backend tracking */
3403 session_inc_be_http_req_ctr(s);
3404
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3405 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3406 http_req_last_rule = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3407
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3408 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3409 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3410 do_stats = stats_check_uri(s->rep->prod, txn, px);
3411 if (do_stats)
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3412 http_req_last_rule = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3413 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3414 else
3415 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3416
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3417 /* return a 403 if either rule has blocked */
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3418 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
3419 if (txn->flags & TX_CLDENY) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3420 txn->status = 403;
3421 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3422 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3423 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3424 s->fe->fe_counters.denied_req++;
3425 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3426 s->be->be_counters.denied_req++;
3427 if (s->listener->counters)
3428 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3429 goto return_prx_cond;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3430 }
3431 /* When a connection is tarpitted, we use the tarpit timeout,
3432 * which may be the same as the connect timeout if unspecified.
3433 * If unset, then set it to zero because we really want it to
3434 * eventually expire. We build the tarpit as an analyser.
3435 */
3436 if (txn->flags & TX_CLTARPIT) {
3437 channel_erase(s->req);
3438 /* wipe the request out so that we can drop the connection early
3439 * if the client closes first.
3440 */
3441 channel_dont_connect(req);
3442 req->analysers = 0; /* remove switching rules etc... */
3443 req->analysers |= AN_REQ_HTTP_TARPIT;
3444 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3445 if (!req->analyse_exp)
3446 req->analyse_exp = tick_add(now_ms, 0);
3447 session_inc_http_err_ctr(s);
3448 s->fe->fe_counters.denied_req++;
3449 if (s->fe != s->be)
3450 s->be->be_counters.denied_req++;
3451 if (s->listener->counters)
3452 s->listener->counters->denied_req++;
3453 return 1;
3454 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3455 }
3456
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3457 /* try headers filters */
3458 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3459 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3460 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3461
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3462 /* has the request been denied ? */
3463 if (txn->flags & TX_CLDENY) {
3464 /* no need to go further */
3465 txn->status = 403;
3466 /* let's log the request time */
3467 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3468 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3469 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3470 goto return_prx_cond;
3471 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3472
3473 /* When a connection is tarpitted, we use the tarpit timeout,
3474 * which may be the same as the connect timeout if unspecified.
3475 * If unset, then set it to zero because we really want it to
3476 * eventually expire. We build the tarpit as an analyser.
3477 */
3478 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3479 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3480 /* wipe the request out so that we can drop the connection early
3481 * if the client closes first.
3482 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3483 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3484 req->analysers = 0; /* remove switching rules etc... */
3485 req->analysers |= AN_REQ_HTTP_TARPIT;
3486 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3487 if (!req->analyse_exp)
3488 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3489 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3490 return 1;
3491 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3492 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3493
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3494 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3495 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3496 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3497 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3498 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3499 * avoid to redo the same work if FE and BE have the same settings (common).
3500 * The method consists in checking if options changed between the two calls
3501 * (implying that either one is non-null, or one of them is non-null and we
3502 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3503 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3504
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3505 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3506 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3507 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3508 (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]3509 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3510
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3511 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3512 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3513 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3514 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3515 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3516 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3517 tmp = TX_CON_WANT_CLO;
3518
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3519 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3520 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3521
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3522 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3523 /* parse the Connection header and possibly clean it */
3524 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3525 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3526 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3527 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3528 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3529 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3530 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3531 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3532 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3533
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3534 /* check if client or config asks for explicit close in KAL/SCL */
3535 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3536 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3537 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3538 (!(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]3539 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3540 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3541 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3542 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3543 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3544
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3545 /* we can be blocked here because the request needs to be authenticated,
3546 * either to pass or to access stats.
3547 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3548 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3549 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3550
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3551 if (!realm)
3552 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3553
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3554 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]3555 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3556 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3557 /* on 401 we still count one error, because normal browsing
3558 * won't significantly increase the counter but brute force
3559 * attempts will.
3560 */
3561 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3562 goto return_prx_cond;
3563 }
3564
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3565 /* add request headers from the rule sets in the same order */
3566 list_for_each_entry(wl, &px->req_add, list) {
3567 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3568 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]3569 ret = acl_pass(ret);
3570 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3571 ret = !ret;
3572 if (!ret)
3573 continue;
3574 }
3575
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3576 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3577 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3578 }
3579
3580 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3581 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3582 goto return_bad_req;
3583 req->analyse_exp = TICK_ETERNITY;
3584 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3585 }
3586
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3587 if (unlikely(do_stats)) {
3588 /* process the stats request now */
3589 if (!http_handle_stats(s, req)) {
3590 /* we need more data, let's come back here later */
3591 req->analysers |= an_bit;
3592 channel_dont_connect(req);
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3593 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3594 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3595 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3596
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3597 /* check whether we have some ACLs set to redirect this request */
3598 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3599 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3600 int ret;
3601
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3602 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]3603 ret = acl_pass(ret);
3604 if (rule->cond->pol == ACL_COND_UNLESS)
3605 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3606 if (!ret)
3607 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3608 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3609 if (!http_apply_redirect_rule(rule, s, txn))
3610 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3611
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3612 req->analyse_exp = TICK_ETERNITY;
3613 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3614 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3615
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3616 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3617 * If this happens, then the data will not come immediately, so we must
3618 * send all what we have without waiting. Note that due to the small gain
3619 * 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]3620 * 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]3621 * itself once used.
3622 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3623 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3624
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3625 /* that's OK for us now, let's move on to next analysers */
3626 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3627
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3628 return_bad_req:
3629 /* We centralize bad requests processing here */
3630 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3631 /* we detected a parsing error. We want to archive this request
3632 * in the dedicated proxy area for later troubleshooting.
3633 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3634 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]3635 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3636
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3637 txn->req.msg_state = HTTP_MSG_ERROR;
3638 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3639 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3640
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3641 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3642 if (s->listener->counters)
3643 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3644
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3645 return_prx_cond:
3646 if (!(s->flags & SN_ERR_MASK))
3647 s->flags |= SN_ERR_PRXCOND;
3648 if (!(s->flags & SN_FINST_MASK))
3649 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3650
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3651 req->analysers = 0;
3652 req->analyse_exp = TICK_ETERNITY;
3653 return 0;
3654}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3655
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3656/* This function performs all the processing enabled for the current request.
3657 * It returns 1 if the processing can continue on next analysers, or zero if it
3658 * needs more data, encounters an error, or wants to immediately abort the
3659 * request. It relies on buffers flags, and updates s->req->analysers.
3660 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3661int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3662{
3663 struct http_txn *txn = &s->txn;
3664 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3665
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3666 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3667 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3668 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3669 return 0;
3670 }
3671
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3672 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]3673 now_ms, __FUNCTION__,
3674 s,
3675 req,
3676 req->rex, req->wex,
3677 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3678 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3679 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3680
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3681 if (s->fe->comp || s->be->comp)
3682 select_compression_request_header(s, req->buf);
3683
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3684 /*
3685 * Right now, we know that we have processed the entire headers
3686 * and that unwanted requests have been filtered out. We can do
3687 * whatever we want with the remaining request. Also, now we
3688 * may have separate values for ->fe, ->be.
3689 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3690
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3691 /*
3692 * If HTTP PROXY is set we simply get remote server address
3693 * parsing incoming request.
3694 */
3695 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3696 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]3697 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3698
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3699 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3700 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3701 * Note that doing so might move headers in the request, but
3702 * the fields will stay coherent and the URI will not move.
3703 * This should only be performed in the backend.
3704 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3705 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3706 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3707 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3708
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3709 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3710 * 8: the appsession cookie was looked up very early in 1.2,
3711 * so let's do the same now.
3712 */
3713
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3714 /* It needs to look into the URI unless persistence must be ignored */
3715 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3716 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]3717 }
3718
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3719 /* add unique-id if "header-unique-id" is specified */
3720
3721 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3722 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3723
3724 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3725 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3726 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3727 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3728 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]3729 goto return_bad_req;
3730 }
3731
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3732 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3733 * 9: add X-Forwarded-For if either the frontend or the backend
3734 * asks for it.
3735 */
3736 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3737 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3738 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3739 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3740 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]3741 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3742 /* The header is set to be added only if none is present
3743 * and we found it, so don't do anything.
3744 */
3745 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3746 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3747 /* Add an X-Forwarded-For header unless the source IP is
3748 * in the 'except' network range.
3749 */
3750 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3751 (((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]3752 != s->fe->except_net.s_addr) &&
3753 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3754 (((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]3755 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3756 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3757 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3758 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3759
3760 /* Note: we rely on the backend to get the header name to be used for
3761 * x-forwarded-for, because the header is really meant for the backends.
3762 * However, if the backend did not specify any option, we have to rely
3763 * on the frontend's header name.
3764 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3765 if (s->be->fwdfor_hdr_len) {
3766 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3767 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3768 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3769 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3770 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3771 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3772 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]3773
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3774 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]3775 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3776 }
3777 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3778 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3779 /* FIXME: for the sake of completeness, we should also support
3780 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3781 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3782 int len;
3783 char pn[INET6_ADDRSTRLEN];
3784 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3785 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3786 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3787
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3788 /* Note: we rely on the backend to get the header name to be used for
3789 * x-forwarded-for, because the header is really meant for the backends.
3790 * However, if the backend did not specify any option, we have to rely
3791 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3792 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3793 if (s->be->fwdfor_hdr_len) {
3794 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3795 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3796 } else {
3797 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3798 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3799 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3800 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3801
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3802 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]3803 goto return_bad_req;
3804 }
3805 }
3806
3807 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3808 * 10: add X-Original-To if either the frontend or the backend
3809 * asks for it.
3810 */
3811 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3812
3813 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3814 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3815 /* Add an X-Original-To header unless the destination IP is
3816 * in the 'except' network range.
3817 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3818 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3819
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3820 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3821 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3822 (((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]3823 != s->fe->except_to.s_addr) &&
3824 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3825 (((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]3826 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3827 int len;
3828 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3829 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3830
3831 /* Note: we rely on the backend to get the header name to be used for
3832 * x-original-to, because the header is really meant for the backends.
3833 * However, if the backend did not specify any option, we have to rely
3834 * on the frontend's header name.
3835 */
3836 if (s->be->orgto_hdr_len) {
3837 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3838 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3839 } else {
3840 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3841 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3842 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3843 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]3844
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3845 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]3846 goto return_bad_req;
3847 }
3848 }
3849 }
3850
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3851 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3852 * If an "Upgrade" token is found, the header is left untouched in order not to have
3853 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3854 * "Upgrade" is present in the Connection header.
3855 */
3856 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3857 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3858 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3859 unsigned int want_flags = 0;
3860
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3861 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3862 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3863 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3864 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3865 want_flags |= TX_CON_CLO_SET;
3866 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3867 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3868 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3869 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3870 want_flags |= TX_CON_KAL_SET;
3871 }
3872
3873 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3874 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3875 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3876
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3877
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3878 /* If we have no server assigned yet and we're balancing on url_param
3879 * with a POST request, we may be interested in checking the body for
3880 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3881 */
3882 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3883 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3884 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3885 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3886 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3887 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3888 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3889
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3890 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3891 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3892#ifdef TCP_QUICKACK
3893 /* We expect some data from the client. Unless we know for sure
3894 * we already have a full request, we have to re-enable quick-ack
3895 * in case we previously disabled it, otherwise we might cause
3896 * the client to delay further data.
3897 */
3898 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3899 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3900 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3901 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]3902#endif
3903 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3904
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3905 /*************************************************************
3906 * OK, that's finished for the headers. We have done what we *
3907 * could. Let's switch to the DATA state. *
3908 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3909 req->analyse_exp = TICK_ETERNITY;
3910 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3911
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3912 /* if the server closes the connection, we want to immediately react
3913 * and close the socket to save packets and syscalls.
3914 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]3915 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
3916 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3917
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3918 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3919 /* OK let's go on with the BODY now */
3920 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3921
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3922 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3923 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3924 /* we detected a parsing error. We want to archive this request
3925 * in the dedicated proxy area for later troubleshooting.
3926 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3927 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]3928 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3929
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3930 txn->req.msg_state = HTTP_MSG_ERROR;
3931 txn->status = 400;
3932 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3933 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3934
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3935 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3936 if (s->listener->counters)
3937 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3938
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3939 if (!(s->flags & SN_ERR_MASK))
3940 s->flags |= SN_ERR_PRXCOND;
3941 if (!(s->flags & SN_FINST_MASK))
3942 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3943 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3944}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3945
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3946/* This function is an analyser which processes the HTTP tarpit. It always
3947 * returns zero, at the beginning because it prevents any other processing
3948 * from occurring, and at the end because it terminates the request.
3949 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3950int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3951{
3952 struct http_txn *txn = &s->txn;
3953
3954 /* This connection is being tarpitted. The CLIENT side has
3955 * already set the connect expiration date to the right
3956 * timeout. We just have to check that the client is still
3957 * there and that the timeout has not expired.
3958 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3959 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3960 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3961 !tick_is_expired(req->analyse_exp, now_ms))
3962 return 0;
3963
3964 /* We will set the queue timer to the time spent, just for
3965 * logging purposes. We fake a 500 server error, so that the
3966 * attacker will not suspect his connection has been tarpitted.
3967 * It will not cause trouble to the logs because we can exclude
3968 * the tarpitted connections by filtering on the 'PT' status flags.
3969 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3970 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3971
3972 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3973 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3974 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3975
3976 req->analysers = 0;
3977 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3978
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3979 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3980 if (s->listener->counters)
3981 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3982
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3983 if (!(s->flags & SN_ERR_MASK))
3984 s->flags |= SN_ERR_PRXCOND;
3985 if (!(s->flags & SN_FINST_MASK))
3986 s->flags |= SN_FINST_T;
3987 return 0;
3988}
3989
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3990/* This function is an analyser which processes the HTTP request body. It looks
3991 * for parameters to be used for the load balancing algorithm (url_param). It
3992 * must only be called after the standard HTTP request processing has occurred,
3993 * because it expects the request to be parsed. It returns zero if it needs to
3994 * read more data, or 1 once it has completed its analysis.
3995 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3996int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3997{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3998 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3999 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4000 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4001
4002 /* We have to parse the HTTP request body to find any required data.
4003 * "balance url_param check_post" should have been the only way to get
4004 * into this. We were brought here after HTTP header analysis, so all
4005 * related structures are ready.
4006 */
4007
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4008 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4009 goto missing_data;
4010
4011 if (msg->msg_state < HTTP_MSG_100_SENT) {
4012 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4013 * send an HTTP/1.1 100 Continue intermediate response.
4014 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4015 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4016 struct hdr_ctx ctx;
4017 ctx.idx = 0;
4018 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4019 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4020 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4021 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4022 }
4023 }
4024 msg->msg_state = HTTP_MSG_100_SENT;
4025 }
4026
4027 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4028 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4029 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4030 * is still null. We must save the body in msg->next because it
4031 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4032 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4033 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4034
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4035 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4036 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4037 else
4038 msg->msg_state = HTTP_MSG_DATA;
4039 }
4040
4041 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4042 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4043 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4044 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4045 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4046 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4047
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4048 if (!ret)
4049 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4050 else if (ret < 0) {
4051 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4052 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4053 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4054 }
4055
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4056 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4057 * We have the first data byte is in msg->sov. We're waiting for at
4058 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4059 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4060
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4061 if (msg->body_len < limit)
4062 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4063
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4064 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4065 goto http_end;
4066
4067 missing_data:
4068 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4069 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4070 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4071 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4072 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4073
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4074 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4075 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4076 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4077
4078 if (!(s->flags & SN_ERR_MASK))
4079 s->flags |= SN_ERR_CLITO;
4080 if (!(s->flags & SN_FINST_MASK))
4081 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4082 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4083 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4084
4085 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4086 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]4087 /* Not enough data. We'll re-use the http-request
4088 * timeout here. Ideally, we should set the timeout
4089 * relative to the accept() date. We just set the
4090 * request timeout once at the beginning of the
4091 * request.
4092 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4093 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4094 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4095 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4096 return 0;
4097 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4098
4099 http_end:
4100 /* The situation will not evolve, so let's give up on the analysis. */
4101 s->logs.tv_request = now; /* update the request timer to reflect full request */
4102 req->analysers &= ~an_bit;
4103 req->analyse_exp = TICK_ETERNITY;
4104 return 1;
4105
4106 return_bad_req: /* let's centralize all bad requests */
4107 txn->req.msg_state = HTTP_MSG_ERROR;
4108 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4109 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4110
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4111 if (!(s->flags & SN_ERR_MASK))
4112 s->flags |= SN_ERR_PRXCOND;
4113 if (!(s->flags & SN_FINST_MASK))
4114 s->flags |= SN_FINST_R;
4115
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4116 return_err_msg:
4117 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4118 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4119 if (s->listener->counters)
4120 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4121 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4122}
4123
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4124/* send a server's name with an outgoing request over an established connection.
4125 * Note: this function is designed to be called once the request has been scheduled
4126 * for being forwarded. This is the reason why it rewinds the buffer before
4127 * proceeding.
4128 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4129int 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]4130
4131 struct hdr_ctx ctx;
4132
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4133 char *hdr_name = be->server_id_hdr_name;
4134 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4135 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4136 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4137 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4138
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4139 ctx.idx = 0;
4140
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4141 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4142 if (old_o) {
4143 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4144 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4145 }
4146
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4147 old_i = chn->buf->i;
4148 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]4149 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4150 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4151 }
4152
4153 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4154 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4155 memcpy(hdr_val, hdr_name, hdr_name_len);
4156 hdr_val += hdr_name_len;
4157 *hdr_val++ = ':';
4158 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4159 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4160 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]4161
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4162 if (old_o) {
4163 /* If this was a forwarded request, we must readjust the amount of
4164 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4165 * variations. Note that if the request was already scheduled for
4166 * forwarding, it had its req->sol pointing to the body, which
4167 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4168 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4169 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4170 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4171 }
4172
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4173 return 0;
4174}
4175
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4176/* Terminate current transaction and prepare a new one. This is very tricky
4177 * right now but it works.
4178 */
4179void http_end_txn_clean_session(struct session *s)
4180{
4181 /* FIXME: We need a more portable way of releasing a backend's and a
4182 * server's connections. We need a safer way to reinitialize buffer
4183 * flags. We also need a more accurate method for computing per-request
4184 * data.
4185 */
4186 http_silent_debug(__LINE__, s);
4187
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4188 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4189 si_shutr(s->req->cons);
4190 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4191
4192 http_silent_debug(__LINE__, s);
4193
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4194 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4195 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4196 if (unlikely(s->srv_conn))
4197 sess_change_server(s, NULL);
4198 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4199
4200 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4201 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4202 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4203
4204 if (s->txn.status) {
4205 int n;
4206
4207 n = s->txn.status / 100;
4208 if (n < 1 || n > 5)
4209 n = 0;
4210
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4211 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4212 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4213 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4214 s->fe->fe_counters.p.http.comp_rsp++;
4215 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4216 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4217 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4218 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4219 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4220 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4221 s->be->be_counters.p.http.comp_rsp++;
4222 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4223 }
4224
4225 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4226 s->logs.bytes_in -= s->req->buf->i;
4227 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4228
4229 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4230 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4231 !(s->flags & SN_MONITOR) &&
4232 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4233 s->do_log(s);
4234 }
4235
4236 s->logs.accept_date = date; /* user-visible date for logging */
4237 s->logs.tv_accept = now; /* corrected date for internal use */
4238 tv_zero(&s->logs.tv_request);
4239 s->logs.t_queue = -1;
4240 s->logs.t_connect = -1;
4241 s->logs.t_data = -1;
4242 s->logs.t_close = 0;
4243 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4244 s->logs.srv_queue_size = 0; /* we will get this number soon */
4245
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4246 s->logs.bytes_in = s->req->total = s->req->buf->i;
4247 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4248
4249 if (s->pend_pos)
4250 pendconn_free(s->pend_pos);
4251
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4252 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4253 if (s->flags & SN_CURR_SESS) {
4254 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4255 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4256 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4257 if (may_dequeue_tasks(objt_server(s->target), s->be))
4258 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4259 }
4260
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4261 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4262
4263 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4264 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4265 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4266 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4267 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4268 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4269 s->req->cons->err_loc = NULL;
4270 s->req->cons->exp = TICK_ETERNITY;
4271 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4272 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4273 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]4274 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]4275 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4276
4277 if (s->flags & SN_COMP_READY)
4278 s->comp_algo->end(&s->comp_ctx);
4279 s->comp_algo = NULL;
4280 s->flags &= ~SN_COMP_READY;
4281
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4282 s->txn.meth = 0;
4283 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4284 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4285 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4286 s->req->cons->flags |= SI_FL_INDEP_STR;
4287
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4288 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4289 s->req->flags |= CF_NEVER_WAIT;
4290 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4291 }
4292
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4293 /* if the request buffer is not empty, it means we're
4294 * about to process another request, so send pending
4295 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4296 * Just don't do this if the buffer is close to be full,
4297 * because the request will wait for it to flush a little
4298 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4299 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4300 if (s->req->buf->i) {
4301 if (s->rep->buf->o &&
4302 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4303 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]4304 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4305 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4306
4307 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4308 channel_auto_read(s->req);
4309 channel_auto_close(s->req);
4310 channel_auto_read(s->rep);
4311 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4312
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4313 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4314 s->rep->analysers = 0;
4315
4316 http_silent_debug(__LINE__, s);
4317}
4318
4319
4320/* This function updates the request state machine according to the response
4321 * state machine and buffer flags. It returns 1 if it changes anything (flag
4322 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4323 * it is only used to find when a request/response couple is complete. Both
4324 * this function and its equivalent should loop until both return zero. It
4325 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4326 */
4327int http_sync_req_state(struct session *s)
4328{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4329 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4330 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4331 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4332 unsigned int old_state = txn->req.msg_state;
4333
4334 http_silent_debug(__LINE__, s);
4335 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4336 return 0;
4337
4338 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4339 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4340 * We can shut the read side unless we want to abort_on_close,
4341 * or we have a POST request. The issue with POST requests is
4342 * that some browsers still send a CRLF after the request, and
4343 * this CRLF must be read so that it does not remain in the kernel
4344 * buffers, otherwise a close could cause an RST on some systems
4345 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4346 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4347 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4348 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4349
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4350 /* if the server closes the connection, we want to immediately react
4351 * and close the socket to save packets and syscalls.
4352 */
4353 chn->cons->flags |= SI_FL_NOHALF;
4354
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4355 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4356 goto wait_other_side;
4357
4358 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4359 /* The server has not finished to respond, so we
4360 * don't want to move in order not to upset it.
4361 */
4362 goto wait_other_side;
4363 }
4364
4365 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4366 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4367 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4368 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4369 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4370 goto wait_other_side;
4371 }
4372
4373 /* When we get here, it means that both the request and the
4374 * response have finished receiving. Depending on the connection
4375 * mode, we'll have to wait for the last bytes to leave in either
4376 * direction, and sometimes for a close to be effective.
4377 */
4378
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4379 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4380 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4381 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4382 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4383 }
4384 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4385 /* Option forceclose is set, or either side wants to close,
4386 * let's enforce it now that we're not expecting any new
4387 * data to come. The caller knows the session is complete
4388 * once both states are CLOSED.
4389 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4390 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4391 channel_shutr_now(chn);
4392 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4393 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4394 }
4395 else {
4396 /* The last possible modes are keep-alive and tunnel. Since tunnel
4397 * mode does not set the body analyser, we can't reach this place
4398 * in tunnel mode, so we're left with keep-alive only.
4399 * This mode is currently not implemented, we switch to tunnel mode.
4400 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4401 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4402 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4403 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4404 }
4405
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4406 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4407 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4408 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4409
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4410 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4411 txn->req.msg_state = HTTP_MSG_CLOSING;
4412 goto http_msg_closing;
4413 }
4414 else {
4415 txn->req.msg_state = HTTP_MSG_CLOSED;
4416 goto http_msg_closed;
4417 }
4418 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4419 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4420 }
4421
4422 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4423 http_msg_closing:
4424 /* nothing else to forward, just waiting for the output buffer
4425 * to be empty and for the shutw_now to take effect.
4426 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4427 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4428 txn->req.msg_state = HTTP_MSG_CLOSED;
4429 goto http_msg_closed;
4430 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4431 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4432 txn->req.msg_state = HTTP_MSG_ERROR;
4433 goto wait_other_side;
4434 }
4435 }
4436
4437 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4438 http_msg_closed:
4439 goto wait_other_side;
4440 }
4441
4442 wait_other_side:
4443 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4444 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4445}
4446
4447
4448/* This function updates the response state machine according to the request
4449 * state machine and buffer flags. It returns 1 if it changes anything (flag
4450 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4451 * it is only used to find when a request/response couple is complete. Both
4452 * this function and its equivalent should loop until both return zero. It
4453 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4454 */
4455int http_sync_res_state(struct session *s)
4456{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4457 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4458 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4459 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4460 unsigned int old_state = txn->rsp.msg_state;
4461
4462 http_silent_debug(__LINE__, s);
4463 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4464 return 0;
4465
4466 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4467 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4468 * still monitor the server connection for a possible close
4469 * while the request is being uploaded, so we don't disable
4470 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4471 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4472 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4473
4474 if (txn->req.msg_state == HTTP_MSG_ERROR)
4475 goto wait_other_side;
4476
4477 if (txn->req.msg_state < HTTP_MSG_DONE) {
4478 /* The client seems to still be sending data, probably
4479 * because we got an error response during an upload.
4480 * We have the choice of either breaking the connection
4481 * or letting it pass through. Let's do the later.
4482 */
4483 goto wait_other_side;
4484 }
4485
4486 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4487 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4488 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4489 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4490 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4491 goto wait_other_side;
4492 }
4493
4494 /* When we get here, it means that both the request and the
4495 * response have finished receiving. Depending on the connection
4496 * mode, we'll have to wait for the last bytes to leave in either
4497 * direction, and sometimes for a close to be effective.
4498 */
4499
4500 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4501 /* Server-close mode : shut read and wait for the request
4502 * side to close its output buffer. The caller will detect
4503 * when we're in DONE and the other is in CLOSED and will
4504 * catch that for the final cleanup.
4505 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4506 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4507 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4508 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4509 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4510 /* Option forceclose is set, or either side wants to close,
4511 * let's enforce it now that we're not expecting any new
4512 * data to come. The caller knows the session is complete
4513 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4514 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4515 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4516 channel_shutr_now(chn);
4517 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4518 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4519 }
4520 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4521 /* The last possible modes are keep-alive and tunnel. Since tunnel
4522 * mode does not set the body analyser, we can't reach this place
4523 * in tunnel mode, so we're left with keep-alive only.
4524 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4525 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4526 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4527 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4528 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4529 }
4530
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4531 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4532 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4533 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4534 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4535 goto http_msg_closing;
4536 }
4537 else {
4538 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4539 goto http_msg_closed;
4540 }
4541 }
4542 goto wait_other_side;
4543 }
4544
4545 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4546 http_msg_closing:
4547 /* nothing else to forward, just waiting for the output buffer
4548 * to be empty and for the shutw_now to take effect.
4549 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4550 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4551 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4552 goto http_msg_closed;
4553 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4554 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4555 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4556 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4557 if (objt_server(s->target))
4558 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4559 goto wait_other_side;
4560 }
4561 }
4562
4563 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4564 http_msg_closed:
4565 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4566 bi_erase(chn);
4567 channel_auto_close(chn);
4568 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4569 goto wait_other_side;
4570 }
4571
4572 wait_other_side:
4573 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4574 /* We force the response to leave immediately if we're waiting for the
4575 * other side, since there is no pending shutdown to push it out.
4576 */
4577 if (!channel_is_empty(chn))
4578 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4579 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4580}
4581
4582
4583/* Resync the request and response state machines. Return 1 if either state
4584 * changes.
4585 */
4586int http_resync_states(struct session *s)
4587{
4588 struct http_txn *txn = &s->txn;
4589 int old_req_state = txn->req.msg_state;
4590 int old_res_state = txn->rsp.msg_state;
4591
4592 http_silent_debug(__LINE__, s);
4593 http_sync_req_state(s);
4594 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4595 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4596 if (!http_sync_res_state(s))
4597 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4598 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4599 if (!http_sync_req_state(s))
4600 break;
4601 }
4602 http_silent_debug(__LINE__, s);
4603 /* OK, both state machines agree on a compatible state.
4604 * There are a few cases we're interested in :
4605 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4606 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4607 * directions, so let's simply disable both analysers.
4608 * - HTTP_MSG_CLOSED on the response only means we must abort the
4609 * request.
4610 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4611 * with server-close mode means we've completed one request and we
4612 * must re-initialize the server connection.
4613 */
4614
4615 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4616 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4617 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4618 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4619 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4620 channel_auto_close(s->req);
4621 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4622 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4623 channel_auto_close(s->rep);
4624 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4625 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4626 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4627 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4628 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4629 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4630 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4631 channel_auto_close(s->rep);
4632 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4633 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4634 channel_abort(s->req);
4635 channel_auto_close(s->req);
4636 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4637 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4638 }
4639 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4640 txn->rsp.msg_state == HTTP_MSG_DONE &&
4641 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4642 /* server-close: terminate this server connection and
4643 * reinitialize a fresh-new transaction.
4644 */
4645 http_end_txn_clean_session(s);
4646 }
4647
4648 http_silent_debug(__LINE__, s);
4649 return txn->req.msg_state != old_req_state ||
4650 txn->rsp.msg_state != old_res_state;
4651}
4652
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4653/* This function is an analyser which forwards request body (including chunk
4654 * sizes if any). It is called as soon as we must forward, even if we forward
4655 * zero byte. The only situation where it must not be called is when we're in
4656 * tunnel mode and we want to forward till the close. It's used both to forward
4657 * remaining data and to resync after end of body. It expects the msg_state to
4658 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4659 * 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]4660 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4661 * bytes of pending data + the headers if not already done (between sol and sov).
4662 * 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]4663 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4664int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4665{
4666 struct http_txn *txn = &s->txn;
4667 struct http_msg *msg = &s->txn.req;
4668
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4669 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4670 return 0;
4671
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4672 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]4673 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4674 /* Output closed while we were sending data. We must abort and
4675 * wake the other side up.
4676 */
4677 msg->msg_state = HTTP_MSG_ERROR;
4678 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4679 return 1;
4680 }
4681
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4682 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4683 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4684
4685 /* Note that we don't have to send 100-continue back because we don't
4686 * need the data to complete our job, and it's up to the server to
4687 * decide whether to return 100, 417 or anything else in return of
4688 * an "Expect: 100-continue" header.
4689 */
4690
4691 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4692 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4693 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4694 * is still null. We must save the body in msg->next because it
4695 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4696 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4697 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4698
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4699 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4700 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4701 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4702 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4703 }
4704
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4705 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4706 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4707
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4708 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4709 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4710 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4711 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4712 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4713 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4714 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4715 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4716 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4717
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4718 if (msg->msg_state == HTTP_MSG_DATA) {
4719 /* must still forward */
4720 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4721 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4722
4723 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4724 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4725 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4726 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4727 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4728 }
4729 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4730 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4731 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4732 * TRAILERS state.
4733 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4734 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4735
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4736 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4737 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4738 else if (ret < 0) {
4739 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4740 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4741 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]4742 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4743 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4744 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4745 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4746 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4747 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4748 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4749
4750 if (ret == 0)
4751 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4752 else if (ret < 0) {
4753 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4754 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4755 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]4756 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4757 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4758 /* we're in MSG_CHUNK_SIZE now */
4759 }
4760 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4761 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4762
4763 if (ret == 0)
4764 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4765 else if (ret < 0) {
4766 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4767 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4768 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]4769 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4770 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4771 /* we're in HTTP_MSG_DONE now */
4772 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4773 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4774 int old_state = msg->msg_state;
4775
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4776 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4777 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4778 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4779 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4780 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4781 if (http_resync_states(s)) {
4782 /* some state changes occurred, maybe the analyser
4783 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4784 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4785 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4786 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4787 /* request errors are most likely due to
4788 * the server aborting the transfer.
4789 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4790 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4791 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4792 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4793 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4794 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4795 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4796 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4797 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4798
4799 /* If "option abortonclose" is set on the backend, we
4800 * want to monitor the client's connection and forward
4801 * any shutdown notification to the server, which will
4802 * decide whether to close or to go on processing the
4803 * request.
4804 */
4805 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4806 channel_auto_read(req);
4807 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4808 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4809 else if (s->txn.meth == HTTP_METH_POST) {
4810 /* POST requests may require to read extra CRLF
4811 * sent by broken browsers and which could cause
4812 * an RST to be sent upon close on some systems
4813 * (eg: Linux).
4814 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4815 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4816 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4817
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4818 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4819 }
4820 }
4821
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4822 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4823 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4824 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4825 if (!(s->flags & SN_ERR_MASK))
4826 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4827 if (!(s->flags & SN_FINST_MASK)) {
4828 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4829 s->flags |= SN_FINST_H;
4830 else
4831 s->flags |= SN_FINST_D;
4832 }
4833
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4834 s->fe->fe_counters.cli_aborts++;
4835 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4836 if (objt_server(s->target))
4837 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4838
4839 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4840 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4841
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4842 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4843 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4844 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4845
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4846 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4847 * 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]4848 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4849 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4850 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4851
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4852 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4853 * 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]4854 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4855 * modes are already handled by the stream sock layer. We must not do
4856 * this in content-length mode because it could present the MSG_MORE
4857 * flag with the last block of forwarded data, which would cause an
4858 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4859 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4860 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4861 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4862
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4863 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4864 return 0;
4865
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4866 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4867 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4868 if (s->listener->counters)
4869 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4870 return_bad_req_stats_ok:
4871 txn->req.msg_state = HTTP_MSG_ERROR;
4872 if (txn->status) {
4873 /* Note: we don't send any error if some data were already sent */
4874 stream_int_retnclose(req->prod, NULL);
4875 } else {
4876 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4877 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4878 }
4879 req->analysers = 0;
4880 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]4881
4882 if (!(s->flags & SN_ERR_MASK))
4883 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4884 if (!(s->flags & SN_FINST_MASK)) {
4885 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4886 s->flags |= SN_FINST_H;
4887 else
4888 s->flags |= SN_FINST_D;
4889 }
4890 return 0;
4891
4892 aborted_xfer:
4893 txn->req.msg_state = HTTP_MSG_ERROR;
4894 if (txn->status) {
4895 /* Note: we don't send any error if some data were already sent */
4896 stream_int_retnclose(req->prod, NULL);
4897 } else {
4898 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4899 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4900 }
4901 req->analysers = 0;
4902 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4903
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4904 s->fe->fe_counters.srv_aborts++;
4905 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4906 if (objt_server(s->target))
4907 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4908
4909 if (!(s->flags & SN_ERR_MASK))
4910 s->flags |= SN_ERR_SRVCL;
4911 if (!(s->flags & SN_FINST_MASK)) {
4912 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4913 s->flags |= SN_FINST_H;
4914 else
4915 s->flags |= SN_FINST_D;
4916 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4917 return 0;
4918}
4919
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4920/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4921 * processing can continue on next analysers, or zero if it either needs more
4922 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4923 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4924 * when it has nothing left to do, and may remove any analyser when it wants to
4925 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4926 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4927int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4928{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4929 struct http_txn *txn = &s->txn;
4930 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4931 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4932 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4933 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4934 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4935
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4936 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]4937 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4938 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4939 rep,
4940 rep->rex, rep->wex,
4941 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4942 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4943 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4944
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4945 /*
4946 * Now parse the partial (or complete) lines.
4947 * We will check the response syntax, and also join multi-line
4948 * headers. An index of all the lines will be elaborated while
4949 * parsing.
4950 *
4951 * For the parsing, we use a 28 states FSM.
4952 *
4953 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4954 * rep->buf->p = beginning of response
4955 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4956 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4957 * msg->eol = end of current header or line (LF or CRLF)
4958 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4959 */
4960
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4961 /* There's a protected area at the end of the buffer for rewriting
4962 * purposes. We don't want to start to parse the request if the
4963 * protected area is affected, because we may have to move processed
4964 * data later, which is much more complicated.
4965 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4966 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4967 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4968 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4969 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4970 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4971 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4972 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4973 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4974 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4975 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4976 return 0;
4977 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4978 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4979 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4980 }
4981
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4982 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4983 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4984 }
4985
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4986 /* 1: we might have to print this header in debug mode */
4987 if (unlikely((global.mode & MODE_DEBUG) &&
4988 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4989 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4990 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4991
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4992 sol = rep->buf->p;
4993 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4994 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4995
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4996 sol += hdr_idx_first_pos(&txn->hdr_idx);
4997 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4998
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4999 while (cur_idx) {
5000 eol = sol + txn->hdr_idx.v[cur_idx].len;
5001 debug_hdr("srvhdr", s, sol, eol);
5002 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5003 cur_idx = txn->hdr_idx.v[cur_idx].next;
5004 }
5005 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5006
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5007 /*
5008 * Now we quickly check if we have found a full valid response.
5009 * If not so, we check the FD and buffer states before leaving.
5010 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5011 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5012 * responses are checked first.
5013 *
5014 * Depending on whether the client is still there or not, we
5015 * may send an error response back or not. Note that normally
5016 * we should only check for HTTP status there, and check I/O
5017 * errors somewhere else.
5018 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5019
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5020 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5021 /* Invalid response */
5022 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5023 /* we detected a parsing error. We want to archive this response
5024 * in the dedicated proxy area for later troubleshooting.
5025 */
5026 hdr_response_bad:
5027 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5028 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]5029
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5030 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5031 if (objt_server(s->target)) {
5032 objt_server(s->target)->counters.failed_resp++;
5033 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5034 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5035 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5036 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5037 rep->analysers = 0;
5038 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5039 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5040 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5041 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5042
5043 if (!(s->flags & SN_ERR_MASK))
5044 s->flags |= SN_ERR_PRXCOND;
5045 if (!(s->flags & SN_FINST_MASK))
5046 s->flags |= SN_FINST_H;
5047
5048 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5049 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5050
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5051 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5052 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5053 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5054 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5055 goto hdr_response_bad;
5056 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5057
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5058 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5059 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5060 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5061 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]5062
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5063 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5064 if (objt_server(s->target)) {
5065 objt_server(s->target)->counters.failed_resp++;
5066 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5067 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5068
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5069 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5070 rep->analysers = 0;
5071 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5072 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5073 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5074 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5075
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5076 if (!(s->flags & SN_ERR_MASK))
5077 s->flags |= SN_ERR_SRVCL;
5078 if (!(s->flags & SN_FINST_MASK))
5079 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5080 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5081 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5082
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5083 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5084 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5085 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5086 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]5087
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5088 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5089 if (objt_server(s->target)) {
5090 objt_server(s->target)->counters.failed_resp++;
5091 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5092 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5093
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5094 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5095 rep->analysers = 0;
5096 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5097 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5098 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5099 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5100
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5101 if (!(s->flags & SN_ERR_MASK))
5102 s->flags |= SN_ERR_SRVTO;
5103 if (!(s->flags & SN_FINST_MASK))
5104 s->flags |= SN_FINST_H;
5105 return 0;
5106 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5107
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5108 /* client abort with an abortonclose */
5109 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5110 s->fe->fe_counters.cli_aborts++;
5111 s->be->be_counters.cli_aborts++;
5112 if (objt_server(s->target))
5113 objt_server(s->target)->counters.cli_aborts++;
5114
5115 rep->analysers = 0;
5116 channel_auto_close(rep);
5117
5118 txn->status = 400;
5119 bi_erase(rep);
5120 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5121
5122 if (!(s->flags & SN_ERR_MASK))
5123 s->flags |= SN_ERR_CLICL;
5124 if (!(s->flags & SN_FINST_MASK))
5125 s->flags |= SN_FINST_H;
5126
5127 /* process_session() will take care of the error */
5128 return 0;
5129 }
5130
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5131 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5132 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5133 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5134 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]5135
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5136 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5137 if (objt_server(s->target)) {
5138 objt_server(s->target)->counters.failed_resp++;
5139 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5140 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5141
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5142 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5143 rep->analysers = 0;
5144 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5145 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5146 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5147 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5148
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5149 if (!(s->flags & SN_ERR_MASK))
5150 s->flags |= SN_ERR_SRVCL;
5151 if (!(s->flags & SN_FINST_MASK))
5152 s->flags |= SN_FINST_H;
5153 return 0;
5154 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5155
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5156 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5157 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5158 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5159 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]5160
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5161 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5162 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5163 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5164
5165 if (!(s->flags & SN_ERR_MASK))
5166 s->flags |= SN_ERR_CLICL;
5167 if (!(s->flags & SN_FINST_MASK))
5168 s->flags |= SN_FINST_H;
5169
5170 /* process_session() will take care of the error */
5171 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5172 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5173
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5174 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5175 return 0;
5176 }
5177
5178 /* More interesting part now : we know that we have a complete
5179 * response which at least looks like HTTP. We have an indicator
5180 * of each header's length, so we can parse them quickly.
5181 */
5182
5183 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5184 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]5185
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5186 /*
5187 * 1: get the status code
5188 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5189 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5190 if (n < 1 || n > 5)
5191 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5192 /* when the client triggers a 4xx from the server, it's most often due
5193 * to a missing object or permission. These events should be tracked
5194 * because if they happen often, it may indicate a brute force or a
5195 * vulnerability scan.
5196 */
5197 if (n == 4)
5198 session_inc_http_err_ctr(s);
5199
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5200 if (objt_server(s->target))
5201 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5202
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5203 /* check if the response is HTTP/1.1 or above */
5204 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5205 ((rep->buf->p[5] > '1') ||
5206 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5207 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5208
5209 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5210 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]5211
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5212 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5213 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5214
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5215 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]5216
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5217 /* Adjust server's health based on status code. Note: status codes 501
5218 * and 505 are triggered on demand by client request, so we must not
5219 * count them as server failures.
5220 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5221 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5222 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5223 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5224 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5225 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5226 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5227
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5228 /*
5229 * 2: check for cacheability.
5230 */
5231
5232 switch (txn->status) {
5233 case 200:
5234 case 203:
5235 case 206:
5236 case 300:
5237 case 301:
5238 case 410:
5239 /* RFC2616 @13.4:
5240 * "A response received with a status code of
5241 * 200, 203, 206, 300, 301 or 410 MAY be stored
5242 * by a cache (...) unless a cache-control
5243 * directive prohibits caching."
5244 *
5245 * RFC2616 @9.5: POST method :
5246 * "Responses to this method are not cacheable,
5247 * unless the response includes appropriate
5248 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5249 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5250 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5251 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5252 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5253 break;
5254 default:
5255 break;
5256 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5257
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5258 /*
5259 * 3: we may need to capture headers
5260 */
5261 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5262 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5263 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5264 txn->rsp.cap, s->fe->rsp_cap);
5265
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5266 /* 4: determine the transfer-length.
5267 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5268 * the presence of a message-body in a RESPONSE and its transfer length
5269 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5270 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5271 * All responses to the HEAD request method MUST NOT include a
5272 * message-body, even though the presence of entity-header fields
5273 * might lead one to believe they do. All 1xx (informational), 204
5274 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5275 * message-body. All other responses do include a message-body,
5276 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5277 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5278 * 1. Any response which "MUST NOT" include a message-body (such as the
5279 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5280 * always terminated by the first empty line after the header fields,
5281 * regardless of the entity-header fields present in the message.
5282 *
5283 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5284 * the "chunked" transfer-coding (Section 6.2) is used, the
5285 * transfer-length is defined by the use of this transfer-coding.
5286 * If a Transfer-Encoding header field is present and the "chunked"
5287 * transfer-coding is not present, the transfer-length is defined by
5288 * the sender closing the connection.
5289 *
5290 * 3. If a Content-Length header field is present, its decimal value in
5291 * OCTETs represents both the entity-length and the transfer-length.
5292 * If a message is received with both a Transfer-Encoding header
5293 * field and a Content-Length header field, the latter MUST be ignored.
5294 *
5295 * 4. If the message uses the media type "multipart/byteranges", and
5296 * the transfer-length is not otherwise specified, then this self-
5297 * delimiting media type defines the transfer-length. This media
5298 * type MUST NOT be used unless the sender knows that the recipient
5299 * can parse it; the presence in a request of a Range header with
5300 * multiple byte-range specifiers from a 1.1 client implies that the
5301 * client can parse multipart/byteranges responses.
5302 *
5303 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5304 */
5305
5306 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5307 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5308 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5309 * FIXME: should we parse anyway and return an error on chunked encoding ?
5310 */
5311 if (txn->meth == HTTP_METH_HEAD ||
5312 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5313 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5314 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5315 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5316 goto skip_content_length;
5317 }
5318
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5319 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5320 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5321 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5322 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5323 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5324 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5325 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5326 /* bad transfer-encoding (chunked followed by something else) */
5327 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5328 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5329 break;
5330 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5331 }
5332
5333 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5334 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5335 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5336 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5337 signed long long cl;
5338
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5339 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5340 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5341 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5342 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5343
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5344 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5345 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5346 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5347 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5348
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5349 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5350 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5351 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5352 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5353
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5354 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5355 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5356 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5357 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5358
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5359 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5360 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5361 }
5362
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5363 if (s->fe->comp || s->be->comp)
5364 select_compression_response_header(s, rep->buf);
5365
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5366 /* FIXME: we should also implement the multipart/byterange method.
5367 * For now on, we resort to close mode in this case (unknown length).
5368 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5369skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5370
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5371 /* end of job, return OK */
5372 rep->analysers &= ~an_bit;
5373 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5374 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5375 return 1;
5376}
5377
5378/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5379 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5380 * and updates t->rep->analysers. It might make sense to explode it into several
5381 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5382 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5383int 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]5384{
5385 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5386 struct http_msg *msg = &txn->rsp;
5387 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5388 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5389
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5390 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]5391 now_ms, __FUNCTION__,
5392 t,
5393 rep,
5394 rep->rex, rep->wex,
5395 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5396 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5397 rep->analysers);
5398
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5399 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5400 return 0;
5401
5402 rep->analysers &= ~an_bit;
5403 rep->analyse_exp = TICK_ETERNITY;
5404
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5405 /* Now we have to check if we need to modify the Connection header.
5406 * This is more difficult on the response than it is on the request,
5407 * because we can have two different HTTP versions and we don't know
5408 * how the client will interprete a response. For instance, let's say
5409 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5410 * HTTP/1.1 response without any header. Maybe it will bound itself to
5411 * HTTP/1.0 because it only knows about it, and will consider the lack
5412 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5413 * the lack of header as a keep-alive. Thus we will use two flags
5414 * indicating how a request MAY be understood by the client. In case
5415 * of multiple possibilities, we'll fix the header to be explicit. If
5416 * ambiguous cases such as both close and keepalive are seen, then we
5417 * will fall back to explicit close. Note that we won't take risks with
5418 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5419 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5420 */
5421
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5422 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5423 txn->status == 101)) {
5424 /* Either we've established an explicit tunnel, or we're
5425 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5426 * to understand the next protocols. We have to switch to tunnel
5427 * mode, so that we transfer the request and responses then let
5428 * this protocol pass unmodified. When we later implement specific
5429 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5430 * header which contains information about that protocol for
5431 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5432 */
5433 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5434 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5435 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5436 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5437 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5438 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5439
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5440 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5441 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5442 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5443 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5444
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5445 /* now adjust header transformations depending on current state */
5446 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5447 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5448 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5449 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5450 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5451 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5452 else { /* SCL / KAL */
5453 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5454 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5455 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5456 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5457
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5458 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5459 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5460
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5461 /* Some keep-alive responses are converted to Server-close if
5462 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5463 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5464 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5465 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5466 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5467 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5468 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5469 }
5470
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5471 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5472 /*
5473 * 3: we will have to evaluate the filters.
5474 * As opposed to version 1.2, now they will be evaluated in the
5475 * filters order and not in the header order. This means that
5476 * each filter has to be validated among all headers.
5477 *
5478 * Filters are tried with ->be first, then with ->fe if it is
5479 * different from ->be.
5480 */
5481
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5482 cur_proxy = t->be;
5483 while (1) {
5484 struct proxy *rule_set = cur_proxy;
5485
5486 /* try headers filters */
5487 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5488 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5489 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5490 if (objt_server(t->target)) {
5491 objt_server(t->target)->counters.failed_resp++;
5492 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5493 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5494 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5495 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5496 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5497 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5498 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5499 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5500 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5501 if (!(t->flags & SN_ERR_MASK))
5502 t->flags |= SN_ERR_PRXCOND;
5503 if (!(t->flags & SN_FINST_MASK))
5504 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5505 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5506 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5507 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5508
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5509 /* has the response been denied ? */
5510 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5511 if (objt_server(t->target))
5512 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5513
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5514 t->be->be_counters.denied_resp++;
5515 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5516 if (t->listener->counters)
5517 t->listener->counters->denied_resp++;
5518
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5519 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5520 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5521
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5522 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5523 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5524 if (txn->status < 200)
5525 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5526 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5527 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]5528 ret = acl_pass(ret);
5529 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5530 ret = !ret;
5531 if (!ret)
5532 continue;
5533 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5534 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5535 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5536 }
5537
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5538 /* check whether we're already working on the frontend */
5539 if (cur_proxy == t->fe)
5540 break;
5541 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5542 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5543
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5544 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5545 * We may be facing a 100-continue response, in which case this
5546 * is not the right response, and we're waiting for the next one.
5547 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5548 * next one.
5549 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5550 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5551 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5552 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5553 msg->msg_state = HTTP_MSG_RPBEFORE;
5554 txn->status = 0;
5555 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5556 return 1;
5557 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5558 else if (unlikely(txn->status < 200))
5559 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5560
5561 /* we don't have any 1xx status code now */
5562
5563 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5564 * 4: check for server cookie.
5565 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5566 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5567 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5568 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5569
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5570
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5571 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5572 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5573 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5574 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]5575 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5576
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5577 /*
5578 * 6: add server cookie in the response if needed
5579 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5580 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5581 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5582 (!(t->flags & SN_DIRECT) ||
5583 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5584 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5585 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5586 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5587 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5588 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5589 /* the server is known, it's not the one the client requested, or the
5590 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5591 * insert a set-cookie here, except if we want to insert only on POST
5592 * requests and this one isn't. Note that servers which don't have cookies
5593 * (eg: some backup servers) will return a full cookie removal request.
5594 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5595 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5596 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5597 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5598 t->be->cookie_name);
5599 }
5600 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5601 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]5602
5603 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5604 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5605 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5606 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5607 trash.len += 5;
5608
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5609 if (t->be->cookie_maxlife) {
5610 /* emit first_date, which is either the original one or
5611 * the current date.
5612 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5613 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5614 s30tob64(txn->cookie_first_date ?
5615 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5616 (date.tv_sec+3) >> 2, trash.str + trash.len);
5617 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5618 }
5619 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5620 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5621 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5622
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5623 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5624 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5625
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5626 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5627 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5628
5629 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5630 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5631
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5632 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]5633 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5634
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5635 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5636 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5637 /* the server did not change, only the date was updated */
5638 txn->flags |= TX_SCK_UPDATED;
5639 else
5640 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5641
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5642 /* Here, we will tell an eventual cache on the client side that we don't
5643 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5644 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5645 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5646 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5647 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5648
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5649 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5650
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5651 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5652 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5653 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5654 }
5655 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5656
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5657 /*
5658 * 7: check if result will be cacheable with a cookie.
5659 * We'll block the response if security checks have caught
5660 * nasty things such as a cacheable cookie.
5661 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5662 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5663 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5664 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5665
5666 /* we're in presence of a cacheable response containing
5667 * a set-cookie header. We'll block it as requested by
5668 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5669 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5670 if (objt_server(t->target))
5671 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5672
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5673 t->be->be_counters.denied_resp++;
5674 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5675 if (t->listener->counters)
5676 t->listener->counters->denied_resp++;
5677
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5678 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5679 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5680 send_log(t->be, LOG_ALERT,
5681 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5682 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5683 goto return_srv_prx_502;
5684 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5685
5686 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5687 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5688 * If an "Upgrade" token is found, the header is left untouched in order
5689 * not to have to deal with some client bugs : some of them fail an upgrade
5690 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5691 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5692 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5693 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5694 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5695 unsigned int want_flags = 0;
5696
5697 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5698 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5699 /* we want a keep-alive response here. Keep-alive header
5700 * required if either side is not 1.1.
5701 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5702 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5703 want_flags |= TX_CON_KAL_SET;
5704 }
5705 else {
5706 /* we want a close response here. Close header required if
5707 * the server is 1.1, regardless of the client.
5708 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5709 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5710 want_flags |= TX_CON_CLO_SET;
5711 }
5712
5713 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5714 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5715 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5716
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5717 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5718 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5719 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5720 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5721
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5722 /*************************************************************
5723 * OK, that's finished for the headers. We have done what we *
5724 * could. Let's switch to the DATA state. *
5725 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5726
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5727 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5728
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5729 /* if the user wants to log as soon as possible, without counting
5730 * bytes from the server, then this is the right moment. We have
5731 * to temporarily assign bytes_out to log what we currently have.
5732 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5733 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5734 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5735 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5736 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5737 t->logs.bytes_out = 0;
5738 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5739
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5740 /* Note: we must not try to cheat by jumping directly to DATA,
5741 * otherwise we would not let the client side wake up.
5742 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5743
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5744 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5745 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5746 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5747}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5748
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5749/* This function is an analyser which forwards response body (including chunk
5750 * sizes if any). It is called as soon as we must forward, even if we forward
5751 * zero byte. The only situation where it must not be called is when we're in
5752 * tunnel mode and we want to forward till the close. It's used both to forward
5753 * remaining data and to resync after end of body. It expects the msg_state to
5754 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5755 * 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]5756 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5757 * bytes of pending data + the headers if not already done (between sol and sov).
5758 * 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]5759 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5760int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5761{
5762 struct http_txn *txn = &s->txn;
5763 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5764 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5765 static struct buffer *tmpbuf = NULL;
5766 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5767 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5768
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5769 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5770 return 0;
5771
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5772 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]5773 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5774 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5775 /* Output closed while we were sending data. We must abort and
5776 * wake the other side up.
5777 */
5778 msg->msg_state = HTTP_MSG_ERROR;
5779 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5780 return 1;
5781 }
5782
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5783 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5784 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5785
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5786 /* this is the first time we need the compression buffer */
5787 if (s->comp_algo != NULL && tmpbuf == NULL) {
5788 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5789 goto aborted_xfer; /* no memory */
5790 }
5791
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5792 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5793 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5794 * rep->buf.p still points to the beginning of the message and msg->sol
5795 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5796 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5797 channel_forward(res, msg->sov);
5798 msg->next = 0;
5799 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5800
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5801 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5802 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5803 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5804 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5805 }
5806
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5807 if (s->comp_algo != NULL) {
5808 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5809 if (ret < 0)
5810 goto missing_data; /* not enough spaces in buffers */
5811 compressing = 1;
5812 }
5813
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5814 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5815 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5816 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5817 if (s->comp_algo == NULL) {
5818 bytes = msg->sov - msg->sol;
5819 if (msg->chunk_len || bytes) {
5820 msg->sol = msg->sov;
5821 msg->next -= bytes; /* will be forwarded */
5822 msg->chunk_len += bytes;
5823 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5824 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5825 }
5826
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5827 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5828 int ret;
5829
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5830 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5831 if (compressing) {
5832 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5833 if (ret < 0)
5834 goto aborted_xfer;
5835 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5836
5837 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5838 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5839
5840 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5841 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5842 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5843 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5844 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5845 if (compressing && consumed_data) {
5846 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5847 compressing = 0;
5848 }
5849 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5850 }
5851 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5852 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5853 * set ->sov and ->next to point to the body and switch to DATA or
5854 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5855 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5856 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5857
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5858 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5859 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5860 else if (ret < 0) {
5861 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5862 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]5863 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5864 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5865 if (compressing) {
5866 if (likely(msg->chunk_len > 0)) {
5867 /* skipping data if we are in compression mode */
5868 b_adv(res->buf, msg->next);
5869 msg->next = 0;
5870 msg->sov = 0;
5871 msg->sol = 0;
5872 } else {
5873 if (consumed_data) {
5874 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5875 compressing = 0;
5876 }
5877 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5878 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5879 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5880 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5881 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5882 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5883 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5884
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5885 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5886 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5887 else if (ret < 0) {
5888 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5889 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]5890 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5891 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5892 /* skipping data in buffer for compression */
5893 if (compressing) {
5894 b_adv(res->buf, msg->next);
5895 msg->next = 0;
5896 msg->sov = 0;
5897 msg->sol = 0;
5898 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5899 /* we're in MSG_CHUNK_SIZE now */
5900 }
5901 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5902 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5903
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5904 if (ret == 0)
5905 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5906 else if (ret < 0) {
5907 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5908 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]5909 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5910 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5911 if (s->comp_algo != NULL) {
5912 /* forwarding trailers */
5913 channel_forward(res, msg->next);
5914 msg->next = 0;
5915 }
5916 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5917 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5918 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5919 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5920 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5921 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5922 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5923 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5924 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5925 if (http_resync_states(s)) {
5926 http_silent_debug(__LINE__, s);
5927 /* some state changes occurred, maybe the analyser
5928 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5929 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5930 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5931 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5932 /* response errors are most likely due to
5933 * the client aborting the transfer.
5934 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5935 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5936 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5937 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5938 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5939 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5940 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5941 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5942 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5943 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5944 }
5945 }
5946
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5947 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5948 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5949 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5950 compressing = 0;
5951 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5952
5953 if (res->flags & CF_SHUTW)
5954 goto aborted_xfer;
5955
5956 /* stop waiting for data if the input is closed before the end. If the
5957 * client side was already closed, it means that the client has aborted,
5958 * so we don't want to count this as a server abort. Otherwise it's a
5959 * server abort.
5960 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5961 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5962 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5963 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5964 if (!(s->flags & SN_ERR_MASK))
5965 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5966 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5967 if (objt_server(s->target))
5968 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5969 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5970 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5971
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5972 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5973 if (!s->req->analysers)
5974 goto return_bad_res;
5975
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5976 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5977 if (s->comp_algo == NULL) {
5978 bytes = msg->sov - msg->sol;
5979 if (msg->chunk_len || bytes) {
5980 msg->sol = msg->sov;
5981 msg->next -= bytes; /* will be forwarded */
5982 msg->chunk_len += bytes;
5983 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5984 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5985 }
5986
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5987 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5988 * 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]5989 * Similarly, with keep-alive on the client side, we don't want to forward a
5990 * close.
5991 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5992 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5993 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5994 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5995 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5996
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5997 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5998 * 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]5999 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6000 * modes are already handled by the stream sock layer. We must not do
6001 * this in content-length mode because it could present the MSG_MORE
6002 * flag with the last block of forwarded data, which would cause an
6003 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6004 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6005 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6006 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6007
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6008 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6009 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6010 return 0;
6011
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6012 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6013 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6014 if (objt_server(s->target))
6015 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6016
6017 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6018 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6019 /* don't send any error message as we're in the body */
6020 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6021 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6022 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]6023 if (objt_server(s->target))
6024 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6025
6026 if (!(s->flags & SN_ERR_MASK))
6027 s->flags |= SN_ERR_PRXCOND;
6028 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6029 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6030 return 0;
6031
6032 aborted_xfer:
6033 txn->rsp.msg_state = HTTP_MSG_ERROR;
6034 /* don't send any error message as we're in the body */
6035 stream_int_retnclose(res->cons, NULL);
6036 res->analysers = 0;
6037 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6038
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6039 s->fe->fe_counters.cli_aborts++;
6040 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6041 if (objt_server(s->target))
6042 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6043
6044 if (!(s->flags & SN_ERR_MASK))
6045 s->flags |= SN_ERR_CLICL;
6046 if (!(s->flags & SN_FINST_MASK))
6047 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6048 return 0;
6049}
6050
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6051/* Iterate the same filter through all request headers.
6052 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6053 * Since it can manage the switch to another backend, it updates the per-proxy
6054 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6055 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6056int 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]6057{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6058 char term;
6059 char *cur_ptr, *cur_end, *cur_next;
6060 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6061 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6062 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6063 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6064
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6065 last_hdr = 0;
6066
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6067 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6068 old_idx = 0;
6069
6070 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6071 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6072 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6073 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6074 (exp->action == ACT_ALLOW ||
6075 exp->action == ACT_DENY ||
6076 exp->action == ACT_TARPIT))
6077 return 0;
6078
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6079 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6080 if (!cur_idx)
6081 break;
6082
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6083 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6084 cur_ptr = cur_next;
6085 cur_end = cur_ptr + cur_hdr->len;
6086 cur_next = cur_end + cur_hdr->cr + 1;
6087
6088 /* Now we have one header between cur_ptr and cur_end,
6089 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6090 */
6091
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6092 /* The annoying part is that pattern matching needs
6093 * that we modify the contents to null-terminate all
6094 * strings before testing them.
6095 */
6096
6097 term = *cur_end;
6098 *cur_end = '\0';
6099
6100 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6101 switch (exp->action) {
6102 case ACT_SETBE:
6103 /* It is not possible to jump a second time.
6104 * FIXME: should we return an HTTP/500 here so that
6105 * the admin knows there's a problem ?
6106 */
6107 if (t->be != t->fe)
6108 break;
6109
6110 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6111 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6112 last_hdr = 1;
6113 break;
6114
6115 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6116 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6117 last_hdr = 1;
6118 break;
6119
6120 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6121 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6122 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6123
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6124 t->fe->fe_counters.denied_req++;
6125 if (t->fe != t->be)
6126 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6127 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6128 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6129
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6130 break;
6131
6132 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6133 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6134 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6135
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6136 t->fe->fe_counters.denied_req++;
6137 if (t->fe != t->be)
6138 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6139 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6140 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6141
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6142 break;
6143
6144 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6145 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6146 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6147 /* FIXME: if the user adds a newline in the replacement, the
6148 * index will not be recalculated for now, and the new line
6149 * will not be counted as a new header.
6150 */
6151
6152 cur_end += delta;
6153 cur_next += delta;
6154 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6155 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6156 break;
6157
6158 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6159 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6160 cur_next += delta;
6161
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6162 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6163 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6164 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6165 cur_hdr->len = 0;
6166 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6167 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6168 break;
6169
6170 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6171 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6172 if (cur_end)
6173 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6174
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6175 /* keep the link from this header to next one in case of later
6176 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6177 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6178 old_idx = cur_idx;
6179 }
6180 return 0;
6181}
6182
6183
6184/* Apply the filter to the request line.
6185 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6186 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6187 * Since it can manage the switch to another backend, it updates the per-proxy
6188 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6189 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6190int 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]6191{
6192 char term;
6193 char *cur_ptr, *cur_end;
6194 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6195 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6196 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6197
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6198 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6199 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6200 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6201 (exp->action == ACT_ALLOW ||
6202 exp->action == ACT_DENY ||
6203 exp->action == ACT_TARPIT))
6204 return 0;
6205 else if (exp->action == ACT_REMOVE)
6206 return 0;
6207
6208 done = 0;
6209
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6210 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6211 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6212
6213 /* Now we have the request line between cur_ptr and cur_end */
6214
6215 /* The annoying part is that pattern matching needs
6216 * that we modify the contents to null-terminate all
6217 * strings before testing them.
6218 */
6219
6220 term = *cur_end;
6221 *cur_end = '\0';
6222
6223 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6224 switch (exp->action) {
6225 case ACT_SETBE:
6226 /* It is not possible to jump a second time.
6227 * FIXME: should we return an HTTP/500 here so that
6228 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6229 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6230 if (t->be != t->fe)
6231 break;
6232
6233 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6234 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6235 done = 1;
6236 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6237
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6238 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6239 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6240 done = 1;
6241 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6242
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6243 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6244 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6245
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6246 t->fe->fe_counters.denied_req++;
6247 if (t->fe != t->be)
6248 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6249 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6250 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6251
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6252 done = 1;
6253 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6254
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6255 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6256 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6257
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6258 t->fe->fe_counters.denied_req++;
6259 if (t->fe != t->be)
6260 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6261 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6262 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6263
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6264 done = 1;
6265 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6266
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6267 case ACT_REPLACE:
6268 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6269 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6270 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6271 /* FIXME: if the user adds a newline in the replacement, the
6272 * index will not be recalculated for now, and the new line
6273 * will not be counted as a new header.
6274 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6275
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6276 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6277 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6278 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6279 HTTP_MSG_RQMETH,
6280 cur_ptr, cur_end + 1,
6281 NULL, NULL);
6282 if (unlikely(!cur_end))
6283 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6284
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6285 /* we have a full request and we know that we have either a CR
6286 * or an LF at <ptr>.
6287 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6288 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6289 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]6290 /* there is no point trying this regex on headers */
6291 return 1;
6292 }
6293 }
6294 *cur_end = term; /* restore the string terminator */
6295 return done;
6296}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6297
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6298
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6299
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6300/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6301 * 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]6302 * 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]6303 * unparsable request. Since it can manage the switch to another backend, it
6304 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6305 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6306int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6307{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6308 struct http_txn *txn = &s->txn;
6309 struct hdr_exp *exp;
6310
6311 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6312 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6313
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6314 /*
6315 * The interleaving of transformations and verdicts
6316 * makes it difficult to decide to continue or stop
6317 * the evaluation.
6318 */
6319
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6320 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6321 break;
6322
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6323 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6324 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6325 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6326 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6327
6328 /* if this filter had a condition, evaluate it now and skip to
6329 * next filter if the condition does not match.
6330 */
6331 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6332 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]6333 ret = acl_pass(ret);
6334 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6335 ret = !ret;
6336
6337 if (!ret)
6338 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6339 }
6340
6341 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6342 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6343 if (unlikely(ret < 0))
6344 return -1;
6345
6346 if (likely(ret == 0)) {
6347 /* The filter did not match the request, it can be
6348 * iterated through all headers.
6349 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6350 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6351 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6352 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6353 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6354}
6355
6356
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6357
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6358/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6359 * Try to retrieve the server associated to the appsession.
6360 * If the server is found, it's assigned to the session.
6361 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6362void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6363 struct http_txn *txn = &t->txn;
6364 appsess *asession = NULL;
6365 char *sessid_temp = NULL;
6366
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6367 if (len > t->be->appsession_len) {
6368 len = t->be->appsession_len;
6369 }
6370
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6371 if (t->be->options2 & PR_O2_AS_REQL) {
6372 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6373 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6374 /* 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]6375 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6376 }
6377
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6378 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6379 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6380 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6381 return;
6382 }
6383
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6384 memcpy(txn->sessid, buf, len);
6385 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6386 }
6387
6388 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6389 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6390 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6391 return;
6392 }
6393
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6394 memcpy(sessid_temp, buf, len);
6395 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6396
6397 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6398 /* free previously allocated memory */
6399 pool_free2(apools.sessid, sessid_temp);
6400
6401 if (asession != NULL) {
6402 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6403 if (!(t->be->options2 & PR_O2_AS_REQL))
6404 asession->request_count++;
6405
6406 if (asession->serverid != NULL) {
6407 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6408
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6409 while (srv) {
6410 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6411 if ((srv->state & SRV_RUNNING) ||
6412 (t->be->options & PR_O_PERSIST) ||
6413 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6414 /* we found the server and it's usable */
6415 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6416 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6417 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6418 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6419
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6420 break;
6421 } else {
6422 txn->flags &= ~TX_CK_MASK;
6423 txn->flags |= TX_CK_DOWN;
6424 }
6425 }
6426 srv = srv->next;
6427 }
6428 }
6429 }
6430}
6431
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6432/* Find the end of a cookie value contained between <s> and <e>. It works the
6433 * same way as with headers above except that the semi-colon also ends a token.
6434 * See RFC2965 for more information. Note that it requires a valid header to
6435 * return a valid result.
6436 */
6437char *find_cookie_value_end(char *s, const char *e)
6438{
6439 int quoted, qdpair;
6440
6441 quoted = qdpair = 0;
6442 for (; s < e; s++) {
6443 if (qdpair) qdpair = 0;
6444 else if (quoted) {
6445 if (*s == '\\') qdpair = 1;
6446 else if (*s == '"') quoted = 0;
6447 }
6448 else if (*s == '"') quoted = 1;
6449 else if (*s == ',' || *s == ';') return s;
6450 }
6451 return s;
6452}
6453
6454/* Delete a value in a header between delimiters <from> and <next> in buffer
6455 * <buf>. The number of characters displaced is returned, and the pointer to
6456 * the first delimiter is updated if required. The function tries as much as
6457 * possible to respect the following principles :
6458 * - replace <from> delimiter by the <next> one unless <from> points to a
6459 * colon, in which case <next> is simply removed
6460 * - set exactly one space character after the new first delimiter, unless
6461 * there are not enough characters in the block being moved to do so.
6462 * - remove unneeded spaces before the previous delimiter and after the new
6463 * one.
6464 *
6465 * It is the caller's responsibility to ensure that :
6466 * - <from> points to a valid delimiter or the colon ;
6467 * - <next> points to a valid delimiter or the final CR/LF ;
6468 * - there are non-space chars before <from> ;
6469 * - there is a CR/LF at or after <next>.
6470 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6471int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6472{
6473 char *prev = *from;
6474
6475 if (*prev == ':') {
6476 /* We're removing the first value, preserve the colon and add a
6477 * space if possible.
6478 */
6479 if (!http_is_crlf[(unsigned char)*next])
6480 next++;
6481 prev++;
6482 if (prev < next)
6483 *prev++ = ' ';
6484
6485 while (http_is_spht[(unsigned char)*next])
6486 next++;
6487 } else {
6488 /* Remove useless spaces before the old delimiter. */
6489 while (http_is_spht[(unsigned char)*(prev-1)])
6490 prev--;
6491 *from = prev;
6492
6493 /* copy the delimiter and if possible a space if we're
6494 * not at the end of the line.
6495 */
6496 if (!http_is_crlf[(unsigned char)*next]) {
6497 *prev++ = *next++;
6498 if (prev + 1 < next)
6499 *prev++ = ' ';
6500 while (http_is_spht[(unsigned char)*next])
6501 next++;
6502 }
6503 }
6504 return buffer_replace2(buf, prev, next, NULL, 0);
6505}
6506
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6507/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6508 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6509 * desirable to call it only when needed. This code is quite complex because
6510 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6511 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6512 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6513void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6514{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6515 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6516 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6517 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6518 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6519 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6520
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6521 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6522 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6523 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6524
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6525 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6526 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6527 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6528
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6529 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6530 hdr_beg = hdr_next;
6531 hdr_end = hdr_beg + cur_hdr->len;
6532 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6533
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6534 /* We have one full header between hdr_beg and hdr_end, and the
6535 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6536 * "Cookie:" headers.
6537 */
6538
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6539 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6540 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6541 old_idx = cur_idx;
6542 continue;
6543 }
6544
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6545 del_from = NULL; /* nothing to be deleted */
6546 preserve_hdr = 0; /* assume we may kill the whole header */
6547
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6548 /* Now look for cookies. Conforming to RFC2109, we have to support
6549 * attributes whose name begin with a '$', and associate them with
6550 * the right cookie, if we want to delete this cookie.
6551 * So there are 3 cases for each cookie read :
6552 * 1) it's a special attribute, beginning with a '$' : ignore it.
6553 * 2) it's a server id cookie that we *MAY* want to delete : save
6554 * some pointers on it (last semi-colon, beginning of cookie...)
6555 * 3) it's an application cookie : we *MAY* have to delete a previous
6556 * "special" cookie.
6557 * At the end of loop, if a "special" cookie remains, we may have to
6558 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6559 * *MUST* delete it.
6560 *
6561 * Note: RFC2965 is unclear about the processing of spaces around
6562 * the equal sign in the ATTR=VALUE form. A careful inspection of
6563 * the RFC explicitly allows spaces before it, and not within the
6564 * tokens (attrs or values). An inspection of RFC2109 allows that
6565 * too but section 10.1.3 lets one think that spaces may be allowed
6566 * after the equal sign too, resulting in some (rare) buggy
6567 * implementations trying to do that. So let's do what servers do.
6568 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6569 * allowed quoted strings in values, with any possible character
6570 * after a backslash, including control chars and delimitors, which
6571 * causes parsing to become ambiguous. Browsers also allow spaces
6572 * within values even without quotes.
6573 *
6574 * We have to keep multiple pointers in order to support cookie
6575 * removal at the beginning, middle or end of header without
6576 * corrupting the header. All of these headers are valid :
6577 *
6578 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6579 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6580 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6581 * | | | | | | | | |
6582 * | | | | | | | | hdr_end <--+
6583 * | | | | | | | +--> next
6584 * | | | | | | +----> val_end
6585 * | | | | | +-----------> val_beg
6586 * | | | | +--------------> equal
6587 * | | | +----------------> att_end
6588 * | | +---------------------> att_beg
6589 * | +--------------------------> prev
6590 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6591 */
6592
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6593 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6594 /* Iterate through all cookies on this line */
6595
6596 /* find att_beg */
6597 att_beg = prev + 1;
6598 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6599 att_beg++;
6600
6601 /* find att_end : this is the first character after the last non
6602 * space before the equal. It may be equal to hdr_end.
6603 */
6604 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6605
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6606 while (equal < hdr_end) {
6607 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6608 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6609 if (http_is_spht[(unsigned char)*equal++])
6610 continue;
6611 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6612 }
6613
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6614 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6615 * is between <att_beg> and <equal>, both may be identical.
6616 */
6617
6618 /* look for end of cookie if there is an equal sign */
6619 if (equal < hdr_end && *equal == '=') {
6620 /* look for the beginning of the value */
6621 val_beg = equal + 1;
6622 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6623 val_beg++;
6624
6625 /* find the end of the value, respecting quotes */
6626 next = find_cookie_value_end(val_beg, hdr_end);
6627
6628 /* make val_end point to the first white space or delimitor after the value */
6629 val_end = next;
6630 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6631 val_end--;
6632 } else {
6633 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6634 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6635
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6636 /* We have nothing to do with attributes beginning with '$'. However,
6637 * they will automatically be removed if a header before them is removed,
6638 * since they're supposed to be linked together.
6639 */
6640 if (*att_beg == '$')
6641 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6642
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6643 /* Ignore cookies with no equal sign */
6644 if (equal == next) {
6645 /* This is not our cookie, so we must preserve it. But if we already
6646 * scheduled another cookie for removal, we cannot remove the
6647 * complete header, but we can remove the previous block itself.
6648 */
6649 preserve_hdr = 1;
6650 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6651 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6652 val_end += delta;
6653 next += delta;
6654 hdr_end += delta;
6655 hdr_next += delta;
6656 cur_hdr->len += delta;
6657 http_msg_move_end(&txn->req, delta);
6658 prev = del_from;
6659 del_from = NULL;
6660 }
6661 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[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 /* if there are spaces around the equal sign, we need to
6665 * strip them otherwise we'll get trouble for cookie captures,
6666 * or even for rewrites. Since this happens extremely rarely,
6667 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6668 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6669 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6670 int stripped_before = 0;
6671 int stripped_after = 0;
6672
6673 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6674 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6675 equal += stripped_before;
6676 val_beg += stripped_before;
6677 }
6678
6679 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6680 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6681 val_beg += stripped_after;
6682 stripped_before += stripped_after;
6683 }
6684
6685 val_end += stripped_before;
6686 next += stripped_before;
6687 hdr_end += stripped_before;
6688 hdr_next += stripped_before;
6689 cur_hdr->len += stripped_before;
6690 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6691 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6692 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6693
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6694 /* First, let's see if we want to capture this cookie. We check
6695 * that we don't already have a client side cookie, because we
6696 * can only capture one. Also as an optimisation, we ignore
6697 * cookies shorter than the declared name.
6698 */
6699 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6700 (val_end - att_beg >= t->fe->capture_namelen) &&
6701 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6702 int log_len = val_end - att_beg;
6703
6704 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6705 Alert("HTTP logging : out of memory.\n");
6706 } else {
6707 if (log_len > t->fe->capture_len)
6708 log_len = t->fe->capture_len;
6709 memcpy(txn->cli_cookie, att_beg, log_len);
6710 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6711 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6712 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6713
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6714 /* Persistence cookies in passive, rewrite or insert mode have the
6715 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6716 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6717 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6718 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6719 * For cookies in prefix mode, the form is :
6720 *
6721 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6722 */
6723 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6724 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6725 struct server *srv = t->be->srv;
6726 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6727
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6728 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6729 * have the server ID between val_beg and delim, and the original cookie between
6730 * delim+1 and val_end. Otherwise, delim==val_end :
6731 *
6732 * Cookie: NAME=SRV; # in all but prefix modes
6733 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6734 * | || || | |+-> next
6735 * | || || | +--> val_end
6736 * | || || +---------> delim
6737 * | || |+------------> val_beg
6738 * | || +-------------> att_end = equal
6739 * | |+-----------------> att_beg
6740 * | +------------------> prev
6741 * +-------------------------> hdr_beg
6742 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6743
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6744 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6745 for (delim = val_beg; delim < val_end; delim++)
6746 if (*delim == COOKIE_DELIM)
6747 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6748 } else {
6749 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6750 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6751 /* Now check if the cookie contains a date field, which would
6752 * appear after a vertical bar ('|') just after the server name
6753 * and before the delimiter.
6754 */
6755 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6756 if (vbar1) {
6757 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6758 * right is the last seen date. It is a base64 encoded
6759 * 30-bit value representing the UNIX date since the
6760 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6761 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6762 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6763 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6764 if (val_end - vbar1 >= 5) {
6765 val = b64tos30(vbar1);
6766 if (val > 0)
6767 txn->cookie_last_date = val << 2;
6768 }
6769 /* look for a second vertical bar */
6770 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6771 if (vbar1 && (val_end - vbar1 > 5)) {
6772 val = b64tos30(vbar1 + 1);
6773 if (val > 0)
6774 txn->cookie_first_date = val << 2;
6775 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6776 }
6777 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6778
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6779 /* if the cookie has an expiration date and the proxy wants to check
6780 * it, then we do that now. We first check if the cookie is too old,
6781 * then only if it has expired. We detect strict overflow because the
6782 * time resolution here is not great (4 seconds). Cookies with dates
6783 * in the future are ignored if their offset is beyond one day. This
6784 * allows an admin to fix timezone issues without expiring everyone
6785 * and at the same time avoids keeping unwanted side effects for too
6786 * long.
6787 */
6788 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6789 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6790 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6791 txn->flags &= ~TX_CK_MASK;
6792 txn->flags |= TX_CK_OLD;
6793 delim = val_beg; // let's pretend we have not found the cookie
6794 txn->cookie_first_date = 0;
6795 txn->cookie_last_date = 0;
6796 }
6797 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6798 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6799 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6800 txn->flags &= ~TX_CK_MASK;
6801 txn->flags |= TX_CK_EXPIRED;
6802 delim = val_beg; // let's pretend we have not found the cookie
6803 txn->cookie_first_date = 0;
6804 txn->cookie_last_date = 0;
6805 }
6806
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6807 /* Here, we'll look for the first running server which supports the cookie.
6808 * This allows to share a same cookie between several servers, for example
6809 * to dedicate backup servers to specific servers only.
6810 * However, to prevent clients from sticking to cookie-less backup server
6811 * when they have incidentely learned an empty cookie, we simply ignore
6812 * empty cookies and mark them as invalid.
6813 * The same behaviour is applied when persistence must be ignored.
6814 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6815 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6816 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6817
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6818 while (srv) {
6819 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6820 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6821 if ((srv->state & SRV_RUNNING) ||
6822 (t->be->options & PR_O_PERSIST) ||
6823 (t->flags & SN_FORCE_PRST)) {
6824 /* we found the server and we can use it */
6825 txn->flags &= ~TX_CK_MASK;
6826 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6827 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6828 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6829 break;
6830 } else {
6831 /* we found a server, but it's down,
6832 * mark it as such and go on in case
6833 * another one is available.
6834 */
6835 txn->flags &= ~TX_CK_MASK;
6836 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6837 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6838 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6839 srv = srv->next;
6840 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6841
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6842 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6843 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6844 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6845 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6846 txn->flags |= TX_CK_UNUSED;
6847 else
6848 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6849 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6850
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6851 /* depending on the cookie mode, we may have to either :
6852 * - delete the complete cookie if we're in insert+indirect mode, so that
6853 * the server never sees it ;
6854 * - remove the server id from the cookie value, and tag the cookie as an
6855 * application cookie so that it does not get accidentely removed later,
6856 * if we're in cookie prefix mode
6857 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6858 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6859 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6860
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6861 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6862 val_end += delta;
6863 next += delta;
6864 hdr_end += delta;
6865 hdr_next += delta;
6866 cur_hdr->len += delta;
6867 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6868
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6869 del_from = NULL;
6870 preserve_hdr = 1; /* we want to keep this cookie */
6871 }
6872 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6873 (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]6874 del_from = prev;
6875 }
6876 } else {
6877 /* This is not our cookie, so we must preserve it. But if we already
6878 * scheduled another cookie for removal, we cannot remove the
6879 * complete header, but we can remove the previous block itself.
6880 */
6881 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6882
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6883 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6884 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6885 if (att_beg >= del_from)
6886 att_beg += delta;
6887 if (att_end >= del_from)
6888 att_end += delta;
6889 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6890 val_end += delta;
6891 next += delta;
6892 hdr_end += delta;
6893 hdr_next += delta;
6894 cur_hdr->len += delta;
6895 http_msg_move_end(&txn->req, delta);
6896 prev = del_from;
6897 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6898 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6899 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6900
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6901 /* Look for the appsession cookie unless persistence must be ignored */
6902 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6903 int cmp_len, value_len;
6904 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6905
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6906 if (t->be->options2 & PR_O2_AS_PFX) {
6907 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6908 value_begin = att_beg + t->be->appsession_name_len;
6909 value_len = val_end - att_beg - t->be->appsession_name_len;
6910 } else {
6911 cmp_len = att_end - att_beg;
6912 value_begin = val_beg;
6913 value_len = val_end - val_beg;
6914 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6915
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6916 /* let's see if the cookie is our appcookie */
6917 if (cmp_len == t->be->appsession_name_len &&
6918 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6919 manage_client_side_appsession(t, value_begin, value_len);
6920 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6921 }
6922
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6923 /* continue with next cookie on this header line */
6924 att_beg = next;
6925 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6926
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6927 /* There are no more cookies on this line.
6928 * We may still have one (or several) marked for deletion at the
6929 * end of the line. We must do this now in two ways :
6930 * - if some cookies must be preserved, we only delete from the
6931 * mark to the end of line ;
6932 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6933 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6934 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6935 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6936 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6937 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6938 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6939 cur_hdr->len += delta;
6940 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6941 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6942
6943 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6944 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6945 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6946 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6947 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6948 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6949 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6950 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6951 }
6952
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6953 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6954 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6955 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6956}
6957
6958
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6959/* Iterate the same filter through all response headers contained in <rtr>.
6960 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6961 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6962int 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]6963{
6964 char term;
6965 char *cur_ptr, *cur_end, *cur_next;
6966 int cur_idx, old_idx, last_hdr;
6967 struct http_txn *txn = &t->txn;
6968 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6969 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6970
6971 last_hdr = 0;
6972
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6973 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6974 old_idx = 0;
6975
6976 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6977 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6978 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6979 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6980 (exp->action == ACT_ALLOW ||
6981 exp->action == ACT_DENY))
6982 return 0;
6983
6984 cur_idx = txn->hdr_idx.v[old_idx].next;
6985 if (!cur_idx)
6986 break;
6987
6988 cur_hdr = &txn->hdr_idx.v[cur_idx];
6989 cur_ptr = cur_next;
6990 cur_end = cur_ptr + cur_hdr->len;
6991 cur_next = cur_end + cur_hdr->cr + 1;
6992
6993 /* Now we have one header between cur_ptr and cur_end,
6994 * and the next header starts at cur_next.
6995 */
6996
6997 /* The annoying part is that pattern matching needs
6998 * that we modify the contents to null-terminate all
6999 * strings before testing them.
7000 */
7001
7002 term = *cur_end;
7003 *cur_end = '\0';
7004
7005 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7006 switch (exp->action) {
7007 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7008 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7009 last_hdr = 1;
7010 break;
7011
7012 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7013 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7014 last_hdr = 1;
7015 break;
7016
7017 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7018 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7019 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7020 /* FIXME: if the user adds a newline in the replacement, the
7021 * index will not be recalculated for now, and the new line
7022 * will not be counted as a new header.
7023 */
7024
7025 cur_end += delta;
7026 cur_next += delta;
7027 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7028 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7029 break;
7030
7031 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7032 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7033 cur_next += delta;
7034
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7035 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7036 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7037 txn->hdr_idx.used--;
7038 cur_hdr->len = 0;
7039 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7040 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7041 break;
7042
7043 }
7044 }
7045 if (cur_end)
7046 *cur_end = term; /* restore the string terminator */
7047
7048 /* keep the link from this header to next one in case of later
7049 * removal of next header.
7050 */
7051 old_idx = cur_idx;
7052 }
7053 return 0;
7054}
7055
7056
7057/* Apply the filter to the status line in the response buffer <rtr>.
7058 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7059 * or -1 if a replacement resulted in an invalid status line.
7060 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7061int 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]7062{
7063 char term;
7064 char *cur_ptr, *cur_end;
7065 int done;
7066 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7067 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7068
7069
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7070 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7071 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7072 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7073 (exp->action == ACT_ALLOW ||
7074 exp->action == ACT_DENY))
7075 return 0;
7076 else if (exp->action == ACT_REMOVE)
7077 return 0;
7078
7079 done = 0;
7080
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7081 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7082 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7083
7084 /* Now we have the status line between cur_ptr and cur_end */
7085
7086 /* The annoying part is that pattern matching needs
7087 * that we modify the contents to null-terminate all
7088 * strings before testing them.
7089 */
7090
7091 term = *cur_end;
7092 *cur_end = '\0';
7093
7094 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7095 switch (exp->action) {
7096 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7097 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7098 done = 1;
7099 break;
7100
7101 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7102 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7103 done = 1;
7104 break;
7105
7106 case ACT_REPLACE:
7107 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7108 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7109 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7110 /* FIXME: if the user adds a newline in the replacement, the
7111 * index will not be recalculated for now, and the new line
7112 * will not be counted as a new header.
7113 */
7114
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7115 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7116 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7117 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7118 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7119 cur_ptr, cur_end + 1,
7120 NULL, NULL);
7121 if (unlikely(!cur_end))
7122 return -1;
7123
7124 /* we have a full respnse and we know that we have either a CR
7125 * or an LF at <ptr>.
7126 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7127 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]7128 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]7129 /* there is no point trying this regex on headers */
7130 return 1;
7131 }
7132 }
7133 *cur_end = term; /* restore the string terminator */
7134 return done;
7135}
7136
7137
7138
7139/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7140 * 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]7141 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7142 * unparsable response.
7143 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7144int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7145{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7146 struct http_txn *txn = &s->txn;
7147 struct hdr_exp *exp;
7148
7149 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7150 int ret;
7151
7152 /*
7153 * The interleaving of transformations and verdicts
7154 * makes it difficult to decide to continue or stop
7155 * the evaluation.
7156 */
7157
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7158 if (txn->flags & TX_SVDENY)
7159 break;
7160
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7161 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7162 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7163 exp->action == ACT_PASS)) {
7164 exp = exp->next;
7165 continue;
7166 }
7167
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7168 /* if this filter had a condition, evaluate it now and skip to
7169 * next filter if the condition does not match.
7170 */
7171 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7172 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]7173 ret = acl_pass(ret);
7174 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7175 ret = !ret;
7176 if (!ret)
7177 continue;
7178 }
7179
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7180 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7181 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7182 if (unlikely(ret < 0))
7183 return -1;
7184
7185 if (likely(ret == 0)) {
7186 /* The filter did not match the response, it can be
7187 * iterated through all headers.
7188 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7189 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7190 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7191 }
7192 return 0;
7193}
7194
7195
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7196/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7197 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7198 * desirable to call it only when needed. This function is also used when we
7199 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7200 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7201void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7202{
7203 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7204 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7205 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7206 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7207 char *hdr_beg, *hdr_end, *hdr_next;
7208 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7209
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7210 /* Iterate through the headers.
7211 * we start with the start line.
7212 */
7213 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7214 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7215
7216 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7217 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7218 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7219
7220 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7221 hdr_beg = hdr_next;
7222 hdr_end = hdr_beg + cur_hdr->len;
7223 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7224
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7225 /* We have one full header between hdr_beg and hdr_end, and the
7226 * next header starts at hdr_next. We're only interested in
7227 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7228 */
7229
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7230 is_cookie2 = 0;
7231 prev = hdr_beg + 10;
7232 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7233 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7234 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7235 if (!val) {
7236 old_idx = cur_idx;
7237 continue;
7238 }
7239 is_cookie2 = 1;
7240 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7241 }
7242
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7243 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7244 * <prev> points to the colon.
7245 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7246 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7247
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7248 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7249 * check-cache is enabled) and we are not interested in checking
7250 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7251 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7252 if (t->be->cookie_name == NULL &&
7253 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7254 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7255 return;
7256
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7257 /* OK so now we know we have to process this response cookie.
7258 * The format of the Set-Cookie header is slightly different
7259 * from the format of the Cookie header in that it does not
7260 * support the comma as a cookie delimiter (thus the header
7261 * cannot be folded) because the Expires attribute described in
7262 * the original Netscape's spec may contain an unquoted date
7263 * with a comma inside. We have to live with this because
7264 * many browsers don't support Max-Age and some browsers don't
7265 * support quoted strings. However the Set-Cookie2 header is
7266 * clean.
7267 *
7268 * We have to keep multiple pointers in order to support cookie
7269 * removal at the beginning, middle or end of header without
7270 * corrupting the header (in case of set-cookie2). A special
7271 * pointer, <scav> points to the beginning of the set-cookie-av
7272 * fields after the first semi-colon. The <next> pointer points
7273 * either to the end of line (set-cookie) or next unquoted comma
7274 * (set-cookie2). All of these headers are valid :
7275 *
7276 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7277 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7278 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7279 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7280 * | | | | | | | | | |
7281 * | | | | | | | | +-> next hdr_end <--+
7282 * | | | | | | | +------------> scav
7283 * | | | | | | +--------------> val_end
7284 * | | | | | +--------------------> val_beg
7285 * | | | | +----------------------> equal
7286 * | | | +------------------------> att_end
7287 * | | +----------------------------> att_beg
7288 * | +------------------------------> prev
7289 * +-----------------------------------------> hdr_beg
7290 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7291
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7292 for (; prev < hdr_end; prev = next) {
7293 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7294
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7295 /* find att_beg */
7296 att_beg = prev + 1;
7297 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7298 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7299
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7300 /* find att_end : this is the first character after the last non
7301 * space before the equal. It may be equal to hdr_end.
7302 */
7303 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7304
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7305 while (equal < hdr_end) {
7306 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7307 break;
7308 if (http_is_spht[(unsigned char)*equal++])
7309 continue;
7310 att_end = equal;
7311 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7312
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7313 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7314 * is between <att_beg> and <equal>, both may be identical.
7315 */
7316
7317 /* look for end of cookie if there is an equal sign */
7318 if (equal < hdr_end && *equal == '=') {
7319 /* look for the beginning of the value */
7320 val_beg = equal + 1;
7321 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7322 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7323
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7324 /* find the end of the value, respecting quotes */
7325 next = find_cookie_value_end(val_beg, hdr_end);
7326
7327 /* make val_end point to the first white space or delimitor after the value */
7328 val_end = next;
7329 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7330 val_end--;
7331 } else {
7332 /* <equal> points to next comma, semi-colon or EOL */
7333 val_beg = val_end = next = equal;
7334 }
7335
7336 if (next < hdr_end) {
7337 /* Set-Cookie2 supports multiple cookies, and <next> points to
7338 * a colon or semi-colon before the end. So skip all attr-value
7339 * pairs and look for the next comma. For Set-Cookie, since
7340 * commas are permitted in values, skip to the end.
7341 */
7342 if (is_cookie2)
7343 next = find_hdr_value_end(next, hdr_end);
7344 else
7345 next = hdr_end;
7346 }
7347
7348 /* Now everything is as on the diagram above */
7349
7350 /* Ignore cookies with no equal sign */
7351 if (equal == val_end)
7352 continue;
7353
7354 /* If there are spaces around the equal sign, we need to
7355 * strip them otherwise we'll get trouble for cookie captures,
7356 * or even for rewrites. Since this happens extremely rarely,
7357 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7358 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7359 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7360 int stripped_before = 0;
7361 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7362
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7363 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7364 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7365 equal += stripped_before;
7366 val_beg += stripped_before;
7367 }
7368
7369 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7370 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7371 val_beg += stripped_after;
7372 stripped_before += stripped_after;
7373 }
7374
7375 val_end += stripped_before;
7376 next += stripped_before;
7377 hdr_end += stripped_before;
7378 hdr_next += stripped_before;
7379 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7380 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7381 }
7382
7383 /* First, let's see if we want to capture this cookie. We check
7384 * that we don't already have a server side cookie, because we
7385 * can only capture one. Also as an optimisation, we ignore
7386 * cookies shorter than the declared name.
7387 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7388 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7389 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7390 (val_end - att_beg >= t->fe->capture_namelen) &&
7391 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7392 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7393 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7394 Alert("HTTP logging : out of memory.\n");
7395 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7396 else {
7397 if (log_len > t->fe->capture_len)
7398 log_len = t->fe->capture_len;
7399 memcpy(txn->srv_cookie, att_beg, log_len);
7400 txn->srv_cookie[log_len] = 0;
7401 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7402 }
7403
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7404 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7405 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7406 if (!(t->flags & SN_IGNORE_PRST) &&
7407 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7408 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7409 /* assume passive cookie by default */
7410 txn->flags &= ~TX_SCK_MASK;
7411 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7412
7413 /* If the cookie is in insert mode on a known server, we'll delete
7414 * this occurrence because we'll insert another one later.
7415 * 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]7416 * a direct access.
7417 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7418 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7419 /* The "preserve" flag was set, we don't want to touch the
7420 * server's cookie.
7421 */
7422 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7423 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7424 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7425 /* this cookie must be deleted */
7426 if (*prev == ':' && next == hdr_end) {
7427 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7428 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7429 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7430 txn->hdr_idx.used--;
7431 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7432 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7433 hdr_next += delta;
7434 http_msg_move_end(&txn->rsp, delta);
7435 /* note: while both invalid now, <next> and <hdr_end>
7436 * are still equal, so the for() will stop as expected.
7437 */
7438 } else {
7439 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7440 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7441 next = prev;
7442 hdr_end += delta;
7443 hdr_next += delta;
7444 cur_hdr->len += delta;
7445 http_msg_move_end(&txn->rsp, delta);
7446 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7447 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7448 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7449 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7450 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7451 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7452 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7453 * with this server since we know it.
7454 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7455 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7456 next += delta;
7457 hdr_end += delta;
7458 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7459 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7460 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7461
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7462 txn->flags &= ~TX_SCK_MASK;
7463 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7464 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7465 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7466 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7467 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7468 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7469 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7470 next += delta;
7471 hdr_end += delta;
7472 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7473 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7474 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7475
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7476 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7477 txn->flags &= ~TX_SCK_MASK;
7478 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7479 }
7480 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7481 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7482 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7483 int cmp_len, value_len;
7484 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7485
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7486 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7487 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7488 value_begin = att_beg + t->be->appsession_name_len;
7489 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]7490 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7491 cmp_len = att_end - att_beg;
7492 value_begin = val_beg;
7493 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7494 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7495
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7496 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7497 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7498 /* free a possibly previously allocated memory */
7499 pool_free2(apools.sessid, txn->sessid);
7500
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7501 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7502 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7503 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7504 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7505 return;
7506 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7507 memcpy(txn->sessid, value_begin, value_len);
7508 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7509 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7510 }
7511 /* that's done for this cookie, check the next one on the same
7512 * line when next != hdr_end (only if is_cookie2).
7513 */
7514 }
7515 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7516 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7517 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7518
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7519 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7520 appsess *asession = NULL;
7521 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7522 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7523 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7524 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7525 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7526 Alert("Not enough Memory process_srv():asession:calloc().\n");
7527 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7528 return;
7529 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7530 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7531
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7532 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7533 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7534 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]7535 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7536 return;
7537 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7538 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7539 asession->sessid[t->be->appsession_len] = 0;
7540
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7541 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7542 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7543 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7544 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]7545 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7546 return;
7547 }
7548 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7549 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7550
7551 asession->request_count = 0;
7552 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7553 }
7554
7555 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7556 asession->request_count++;
7557 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7558}
7559
7560
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7561/*
7562 * Check if response is cacheable or not. Updates t->flags.
7563 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7564void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7565{
7566 struct http_txn *txn = &t->txn;
7567 char *p1, *p2;
7568
7569 char *cur_ptr, *cur_end, *cur_next;
7570 int cur_idx;
7571
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7572 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7573 return;
7574
7575 /* Iterate through the headers.
7576 * we start with the start line.
7577 */
7578 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7579 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7580
7581 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7582 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7583 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7584
7585 cur_hdr = &txn->hdr_idx.v[cur_idx];
7586 cur_ptr = cur_next;
7587 cur_end = cur_ptr + cur_hdr->len;
7588 cur_next = cur_end + cur_hdr->cr + 1;
7589
7590 /* We have one full header between cur_ptr and cur_end, and the
7591 * next header starts at cur_next. We're only interested in
7592 * "Cookie:" headers.
7593 */
7594
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7595 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7596 if (val) {
7597 if ((cur_end - (cur_ptr + val) >= 8) &&
7598 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7599 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7600 return;
7601 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7602 }
7603
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7604 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7605 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7606 continue;
7607
7608 /* OK, right now we know we have a cache-control header at cur_ptr */
7609
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7610 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7611
7612 if (p1 >= cur_end) /* no more info */
7613 continue;
7614
7615 /* p1 is at the beginning of the value */
7616 p2 = p1;
7617
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7618 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7619 p2++;
7620
7621 /* we have a complete value between p1 and p2 */
7622 if (p2 < cur_end && *p2 == '=') {
7623 /* we have something of the form no-cache="set-cookie" */
7624 if ((cur_end - p1 >= 21) &&
7625 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7626 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7627 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7628 continue;
7629 }
7630
7631 /* OK, so we know that either p2 points to the end of string or to a comma */
7632 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7633 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7634 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7635 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7636 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7637 return;
7638 }
7639
7640 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7641 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7642 continue;
7643 }
7644 }
7645}
7646
7647
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7648/*
7649 * Try to retrieve a known appsession in the URI, then the associated server.
7650 * If the server is found, it's assigned to the session.
7651 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7652void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7653{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7654 char *end_params, *first_param, *cur_param, *next_param;
7655 char separator;
7656 int value_len;
7657
7658 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7659
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7660 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7661 (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]7662 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7663 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7664
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7665 first_param = NULL;
7666 switch (mode) {
7667 case PR_O2_AS_M_PP:
7668 first_param = memchr(begin, ';', len);
7669 break;
7670 case PR_O2_AS_M_QS:
7671 first_param = memchr(begin, '?', len);
7672 break;
7673 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7674
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7675 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7676 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7677 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7678
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7679 switch (mode) {
7680 case PR_O2_AS_M_PP:
7681 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7682 end_params = (char *) begin + len;
7683 }
7684 separator = ';';
7685 break;
7686 case PR_O2_AS_M_QS:
7687 end_params = (char *) begin + len;
7688 separator = '&';
7689 break;
7690 default:
7691 /* unknown mode, shouldn't happen */
7692 return;
7693 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7694
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7695 cur_param = next_param = end_params;
7696 while (cur_param > first_param) {
7697 cur_param--;
7698 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7699 /* let's see if this is the appsession parameter */
7700 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7701 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7702 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7703 /* Cool... it's the right one */
7704 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7705 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7706 if (value_len > 0) {
7707 manage_client_side_appsession(t, cur_param, value_len);
7708 }
7709 break;
7710 }
7711 next_param = cur_param;
7712 }
7713 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7714#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7715 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7716 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7717#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7718}
7719
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7720/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7721 * 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]7722 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7723 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7724 * 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]7725 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7726 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7727 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7728 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7729int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7730{
7731 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7732 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7733 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7734 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7735
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7736 if (!uri_auth)
7737 return 0;
7738
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7739 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]7740 return 0;
7741
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7742 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7743 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]7744 si->applet.ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7745
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7746 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7747 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7748 return 0;
7749
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7750 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7751 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7752 return 0;
7753
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7754 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7755 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7756 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7757 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7758 break;
7759 }
7760 h++;
7761 }
7762
7763 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7764 h = uri + uri_auth->uri_len;
7765 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7766 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7767 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7768 break;
7769 }
7770 h++;
7771 }
7772 }
7773
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7774 h = uri + uri_auth->uri_len;
7775 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7776 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]7777 si->applet.ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7778 break;
7779 }
7780 h++;
7781 }
7782
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7783 h = uri + uri_auth->uri_len;
7784 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7785 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7786 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7787 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7788 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7789 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7790 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7791 si->applet.ctx.stats.st_code = i;
7792 break;
7793 }
7794 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7795 break;
7796 }
7797 h++;
7798 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7799 return 1;
7800}
7801
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7802/*
7803 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7804 * By default it tries to report the error position as msg->err_pos. However if
7805 * this one is not set, it will then report msg->next, which is the last known
7806 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7807 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7808 */
7809void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7810 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7811 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7812{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7813 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7814 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7815
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7816 es->len = MIN(chn->buf->i, sizeof(es->buf));
7817 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7818 len1 = MIN(len1, es->len);
7819 len2 = es->len - len1; /* remaining data if buffer wraps */
7820
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7821 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7822 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7823 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7824
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7825 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7826 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7827 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7828 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7829
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7830 es->when = date; // user-visible date
7831 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7832 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7833 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7834 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7835 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7836 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7837 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7838 es->s_flags = s->flags;
7839 es->t_flags = s->txn.flags;
7840 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7841 es->b_out = chn->buf->o;
7842 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7843 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7844 es->m_clen = msg->chunk_len;
7845 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7846}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7847
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7848/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7849 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7850 * performed over the whole headers. Otherwise it must contain a valid header
7851 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7852 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7853 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7854 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7855 * -1.
7856 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7857 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7858unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7859 struct hdr_idx *idx, int occ,
7860 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7861{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7862 struct hdr_ctx local_ctx;
7863 char *ptr_hist[MAX_HDR_HISTORY];
7864 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7865 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7866 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7867
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7868 if (!ctx) {
7869 local_ctx.idx = 0;
7870 ctx = &local_ctx;
7871 }
7872
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7873 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7874 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7875 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7876 occ--;
7877 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7878 *vptr = ctx->line + ctx->val;
7879 *vlen = ctx->vlen;
7880 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7881 }
7882 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7883 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7884 }
7885
7886 /* negative occurrence, we scan all the list then walk back */
7887 if (-occ > MAX_HDR_HISTORY)
7888 return 0;
7889
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7890 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7891 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7892 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7893 len_hist[hist_ptr] = ctx->vlen;
7894 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7895 hist_ptr = 0;
7896 found++;
7897 }
7898 if (-occ > found)
7899 return 0;
7900 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7901 * find occurrence -occ, so we have to check [hist_ptr+occ].
7902 */
7903 hist_ptr += occ;
7904 if (hist_ptr >= MAX_HDR_HISTORY)
7905 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7906 *vptr = ptr_hist[hist_ptr];
7907 *vlen = len_hist[hist_ptr];
7908 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7909}
7910
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7911/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7912 * Print a debug line with a header. Always stop at the first CR or LF char,
7913 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7914 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7915 */
7916void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7917{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7918 int max;
7919 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7920 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7921 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7922
7923 for (max = 0; start + max < end; max++)
7924 if (start[max] == '\r' || start[max] == '\n')
7925 break;
7926
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7927 UBOUND(max, trash.size - trash.len - 3);
7928 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7929 trash.str[trash.len++] = '\n';
7930 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7931}
7932
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7933/*
7934 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7935 * the required fields are properly allocated and that we only need to (re)init
7936 * them. This should be used before processing any new request.
7937 */
7938void http_init_txn(struct session *s)
7939{
7940 struct http_txn *txn = &s->txn;
7941 struct proxy *fe = s->fe;
7942
7943 txn->flags = 0;
7944 txn->status = -1;
7945
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7946 global.req_count++;
7947
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7948 txn->cookie_first_date = 0;
7949 txn->cookie_last_date = 0;
7950
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7951 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7952 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7953 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7954 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7955 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7956 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7957 txn->req.chunk_len = 0LL;
7958 txn->req.body_len = 0LL;
7959 txn->rsp.chunk_len = 0LL;
7960 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7961 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7962 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7963 txn->req.chn = s->req;
7964 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7965
7966 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7967
7968 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7969 if (fe->options2 & PR_O2_REQBUG_OK)
7970 txn->req.err_pos = -1; /* let buggy requests pass */
7971
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7972 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7973 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7974
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7975 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7976 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7977
7978 if (txn->hdr_idx.v)
7979 hdr_idx_init(&txn->hdr_idx);
7980}
7981
7982/* to be used at the end of a transaction */
7983void http_end_txn(struct session *s)
7984{
7985 struct http_txn *txn = &s->txn;
7986
7987 /* these ones will have been dynamically allocated */
7988 pool_free2(pool2_requri, txn->uri);
7989 pool_free2(pool2_capture, txn->cli_cookie);
7990 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7991 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7992 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7993
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7994 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7995 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7996 txn->uri = NULL;
7997 txn->srv_cookie = NULL;
7998 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7999
8000 if (txn->req.cap) {
8001 struct cap_hdr *h;
8002 for (h = s->fe->req_cap; h; h = h->next)
8003 pool_free2(h->pool, txn->req.cap[h->index]);
8004 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8005 }
8006
8007 if (txn->rsp.cap) {
8008 struct cap_hdr *h;
8009 for (h = s->fe->rsp_cap; h; h = h->next)
8010 pool_free2(h->pool, txn->rsp.cap[h->index]);
8011 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8012 }
8013
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8014}
8015
8016/* to be used at the end of a transaction to prepare a new one */
8017void http_reset_txn(struct session *s)
8018{
8019 http_end_txn(s);
8020 http_init_txn(s);
8021
8022 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8023 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8024 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8025 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8026 /* re-init store persistence */
8027 s->store_count = 0;
8028
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8029 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8030
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8031 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8032
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8033 /* We must trim any excess data from the response buffer, because we
8034 * may have blocked an invalid response from a server that we don't
8035 * want to accidentely forward once we disable the analysers, nor do
8036 * we want those data to come along with next response. A typical
8037 * example of such data would be from a buggy server responding to
8038 * a HEAD with some data, or sending more than the advertised
8039 * content-length.
8040 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8041 if (unlikely(s->rep->buf->i))
8042 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8043
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8044 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8045 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8046
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8047 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8048 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8049
8050 s->req->rex = TICK_ETERNITY;
8051 s->req->wex = TICK_ETERNITY;
8052 s->req->analyse_exp = TICK_ETERNITY;
8053 s->rep->rex = TICK_ETERNITY;
8054 s->rep->wex = TICK_ETERNITY;
8055 s->rep->analyse_exp = TICK_ETERNITY;
8056}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8057
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8058void free_http_req_rules(struct list *r) {
8059 struct http_req_rule *tr, *pr;
8060
8061 list_for_each_entry_safe(pr, tr, r, list) {
8062 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8063 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8064 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8065
8066 free(pr);
8067 }
8068}
8069
8070struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8071{
8072 struct http_req_rule *rule;
8073 int cur_arg;
8074
8075 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8076 if (!rule) {
8077 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8078 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8079 }
8080
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8081 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8082 rule->action = HTTP_REQ_ACT_ALLOW;
8083 cur_arg = 1;
8084 } else if (!strcmp(args[0], "deny")) {
8085 rule->action = HTTP_REQ_ACT_DENY;
8086 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8087 } else if (!strcmp(args[0], "tarpit")) {
8088 rule->action = HTTP_REQ_ACT_TARPIT;
8089 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8090 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8091 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8092 cur_arg = 1;
8093
8094 while(*args[cur_arg]) {
8095 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8096 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8097 cur_arg+=2;
8098 continue;
8099 } else
8100 break;
8101 }
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8102 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8103 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8104 cur_arg = 1;
8105
8106 if (!*args[cur_arg] || !*args[cur_arg+1] || *args[cur_arg+2]) {
8107 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8108 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8109 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8110 }
8111
8112 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8113 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8114 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreau3bfeadb2013-03-24 07:33:22 +0100[diff] [blame]8115 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8116 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8117 } else if (strcmp(args[0], "redirect") == 0) {
8118 struct redirect_rule *redir;
8119 char *errmsg;
8120
8121 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg)) == NULL) {
8122 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8123 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8124 goto out_err;
8125 }
8126
8127 /* this redirect rule might already contain a parsed condition which
8128 * we'll pass to the http-request rule.
8129 */
8130 rule->action = HTTP_REQ_ACT_REDIR;
8131 rule->arg.redir = redir;
8132 rule->cond = redir->cond;
8133 redir->cond = NULL;
8134 cur_arg = 2;
8135 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8136 } else {
Baptiste Assmann116eefe2013-01-05 16:02:07 +0100[diff] [blame]8137 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', 'tarpit', 'add-header', 'set-header', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8138 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8139 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8140 }
8141
8142 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8143 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8144 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8145
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8146 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8147 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8148 file, linenum, args[0], errmsg);
8149 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8150 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8151 }
8152 rule->cond = cond;
8153 }
8154 else if (*args[cur_arg]) {
8155 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8156 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8157 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8158 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8159 }
8160
8161 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8162 out_err:
8163 free(rule);
8164 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8165}
8166
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8167/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
8168 * with <err> filled with the error message.
8169 */
8170struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
8171 const char **args, char **errmsg)
8172{
8173 struct redirect_rule *rule;
8174 int cur_arg;
8175 int type = REDIRECT_TYPE_NONE;
8176 int code = 302;
8177 const char *destination = NULL;
8178 const char *cookie = NULL;
8179 int cookie_set = 0;
8180 unsigned int flags = REDIRECT_FLAG_NONE;
8181 struct acl_cond *cond = NULL;
8182
8183 cur_arg = 0;
8184 while (*(args[cur_arg])) {
8185 if (strcmp(args[cur_arg], "location") == 0) {
8186 if (!*args[cur_arg + 1])
8187 goto missing_arg;
8188
8189 type = REDIRECT_TYPE_LOCATION;
8190 cur_arg++;
8191 destination = args[cur_arg];
8192 }
8193 else if (strcmp(args[cur_arg], "prefix") == 0) {
8194 if (!*args[cur_arg + 1])
8195 goto missing_arg;
8196
8197 type = REDIRECT_TYPE_PREFIX;
8198 cur_arg++;
8199 destination = args[cur_arg];
8200 }
8201 else if (strcmp(args[cur_arg], "scheme") == 0) {
8202 if (!*args[cur_arg + 1])
8203 goto missing_arg;
8204
8205 type = REDIRECT_TYPE_SCHEME;
8206 cur_arg++;
8207 destination = args[cur_arg];
8208 }
8209 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8210 if (!*args[cur_arg + 1])
8211 goto missing_arg;
8212
8213 cur_arg++;
8214 cookie = args[cur_arg];
8215 cookie_set = 1;
8216 }
8217 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8218 if (!*args[cur_arg + 1])
8219 goto missing_arg;
8220
8221 cur_arg++;
8222 cookie = args[cur_arg];
8223 cookie_set = 0;
8224 }
8225 else if (strcmp(args[cur_arg], "code") == 0) {
8226 if (!*args[cur_arg + 1])
8227 goto missing_arg;
8228
8229 cur_arg++;
8230 code = atol(args[cur_arg]);
8231 if (code < 301 || code > 303) {
8232 memprintf(errmsg,
8233 "'%s': unsupported HTTP code '%s' (must be a number between 301 and 303)",
8234 args[cur_arg - 1], args[cur_arg]);
8235 return NULL;
8236 }
8237 }
8238 else if (!strcmp(args[cur_arg],"drop-query")) {
8239 flags |= REDIRECT_FLAG_DROP_QS;
8240 }
8241 else if (!strcmp(args[cur_arg],"append-slash")) {
8242 flags |= REDIRECT_FLAG_APPEND_SLASH;
8243 }
8244 else if (strcmp(args[cur_arg], "if") == 0 ||
8245 strcmp(args[cur_arg], "unless") == 0) {
8246 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8247 if (!cond) {
8248 memprintf(errmsg, "error in condition: %s", *errmsg);
8249 return NULL;
8250 }
8251 break;
8252 }
8253 else {
8254 memprintf(errmsg,
8255 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8256 args[cur_arg]);
8257 return NULL;
8258 }
8259 cur_arg++;
8260 }
8261
8262 if (type == REDIRECT_TYPE_NONE) {
8263 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8264 return NULL;
8265 }
8266
8267 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8268 rule->cond = cond;
8269 rule->rdr_str = strdup(destination);
8270 rule->rdr_len = strlen(destination);
8271 if (cookie) {
8272 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8273 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8274 */
8275 rule->cookie_len = strlen(cookie);
8276 if (cookie_set) {
8277 rule->cookie_str = malloc(rule->cookie_len + 10);
8278 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8279 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8280 rule->cookie_len += 9;
8281 } else {
8282 rule->cookie_str = malloc(rule->cookie_len + 21);
8283 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8284 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8285 rule->cookie_len += 20;
8286 }
8287 }
8288 rule->type = type;
8289 rule->code = code;
8290 rule->flags = flags;
8291 LIST_INIT(&rule->list);
8292 return rule;
8293
8294 missing_arg:
8295 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8296 return NULL;
8297}
8298
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8299/************************************************************************/
8300/* The code below is dedicated to ACL parsing and matching */
8301/************************************************************************/
8302
8303
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8304/* This function ensures that the prerequisites for an L7 fetch are ready,
8305 * which means that a request or response is ready. If some data is missing,
8306 * 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]8307 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8308 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8309 *
8310 * The function returns :
8311 * 0 if some data is missing or if the requested data cannot be fetched
8312 * -1 if it is certain that we'll never have any HTTP message there
8313 * 1 if an HTTP message is ready
8314 */
8315static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8316acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8317 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8318{
8319 struct http_txn *txn = l7;
8320 struct http_msg *msg = &txn->req;
8321
8322 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8323 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8324 */
8325
8326 if (unlikely(!s || !txn))
8327 return 0;
8328
8329 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8330 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8331
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8332 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8333 if (unlikely(!s->req))
8334 return 0;
8335
8336 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8337 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8338 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8339 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8340 return -1;
8341 }
8342
8343 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8344 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8345 http_msg_analyzer(msg, &txn->hdr_idx);
8346
8347 /* Still no valid request ? */
8348 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8349 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8350 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8351 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8352 return -1;
8353 }
8354 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8355 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8356 return 0;
8357 }
8358
8359 /* OK we just got a valid HTTP request. We have some minor
8360 * preparation to perform so that further checks can rely
8361 * on HTTP tests.
8362 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8363 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8364 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8365 s->flags |= SN_REDIRECTABLE;
8366
8367 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8368 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8369 return -1;
8370 }
8371 }
8372
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8373 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8374 return 0; /* data might have moved and indexes changed */
8375
8376 /* otherwise everything's ready for the request */
8377 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8378 else {
8379 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8380 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8381 return 0;
8382 }
8383
8384 /* everything's OK */
8385 return 1;
8386}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8387
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8388#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8389 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]8390
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8391#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8392 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]8393
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8394
8395/* 1. Check on METHOD
8396 * We use the pre-parsed method if it is known, and store its number as an
8397 * integer. If it is unknown, we use the pointer and the length.
8398 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8399static 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]8400{
8401 int len, meth;
8402
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8403 len = strlen(*text);
8404 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8405
8406 pattern->val.i = meth;
8407 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8408 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8409 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8410 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8411 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8412 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8413 pattern->len = len;
8414 }
8415 return 1;
8416}
8417
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8418/* This function fetches the method of current HTTP request and stores
8419 * it in the global pattern struct as a chunk. There are two possibilities :
8420 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8421 * in <len> and <ptr> is NULL ;
8422 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8423 * <len> to its length.
8424 * This is intended to be used with acl_match_meth() only.
8425 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8426static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8427acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8428 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8429{
8430 int meth;
8431 struct http_txn *txn = l7;
8432
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8433 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8434
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8435 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8436 smp->type = SMP_T_UINT;
8437 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8438 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8439 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8440 /* ensure the indexes are not affected */
8441 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8442 smp->type = SMP_T_CSTR;
8443 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8444 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8445 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8446 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8447 return 1;
8448}
8449
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8450/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8451static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8452{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8453 int icase;
8454
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8455
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8456 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8457 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8458 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8459 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8460 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8461 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8462
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8463 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8464 if (pattern->val.i != HTTP_METH_OTHER)
8465 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8466
8467 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8468 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8469 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8470
8471 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8472 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8473 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8474 return ACL_PAT_FAIL;
8475 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8476}
8477
8478/* 2. Check on Request/Status Version
8479 * We simply compare strings here.
8480 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8481static 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]8482{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8483 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8484 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8485 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8486 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8487 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8488 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8489 return 1;
8490}
8491
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8492static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8493acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8494 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8495{
8496 struct http_txn *txn = l7;
8497 char *ptr;
8498 int len;
8499
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8500 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8501
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8502 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8503 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8504
8505 while ((len-- > 0) && (*ptr++ != '/'));
8506 if (len <= 0)
8507 return 0;
8508
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8509 smp->type = SMP_T_CSTR;
8510 smp->data.str.str = ptr;
8511 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8512
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8513 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8514 return 1;
8515}
8516
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8517static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8518acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8519 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8520{
8521 struct http_txn *txn = l7;
8522 char *ptr;
8523 int len;
8524
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8525 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8526
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8527 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8528 return 0;
8529
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8530 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8531 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8532
8533 while ((len-- > 0) && (*ptr++ != '/'));
8534 if (len <= 0)
8535 return 0;
8536
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8537 smp->type = SMP_T_CSTR;
8538 smp->data.str.str = ptr;
8539 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8540
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8541 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8542 return 1;
8543}
8544
8545/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8546static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8547acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8548 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8549{
8550 struct http_txn *txn = l7;
8551 char *ptr;
8552 int len;
8553
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8554 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8555
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8556 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8557 return 0;
8558
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8559 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8560 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8561
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8562 smp->type = SMP_T_UINT;
8563 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8564 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8565 return 1;
8566}
8567
8568/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8569static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8570smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8571 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8572{
8573 struct http_txn *txn = l7;
8574
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8575 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8576
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8577 smp->type = SMP_T_CSTR;
8578 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8579 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8580 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8581 return 1;
8582}
8583
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8584static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8585smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8586 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8587{
8588 struct http_txn *txn = l7;
8589
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8590 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8591
8592 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8593 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8594 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8595 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8596 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8597 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8598
8599 /*
8600 * If we are parsing url in frontend space, we prepare backend stage
8601 * to not parse again the same url ! optimization lazyness...
8602 */
8603 if (px->options & PR_O_HTTP_PROXY)
8604 l4->flags |= SN_ADDR_SET;
8605
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8606 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8607 return 1;
8608}
8609
8610static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8611smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8612 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8613{
8614 struct http_txn *txn = l7;
8615
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8616 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8617
8618 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8619 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]8620 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8621 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]8622
8623 if (px->options & PR_O_HTTP_PROXY)
8624 l4->flags |= SN_ADDR_SET;
8625
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8626 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8627 return 1;
8628}
8629
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8630/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8631 * Accepts an optional argument of type string containing the header field name,
8632 * and an optional argument of type signed or unsigned integer to request an
8633 * explicit occurrence of the header. Note that in the event of a missing name,
8634 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8635 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8636static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8637smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8638 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8639{
8640 struct http_txn *txn = l7;
8641 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8642 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8643 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]8644 int occ = 0;
8645 const char *name_str = NULL;
8646 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8647
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8648 if (args) {
8649 if (args[0].type != ARGT_STR)
8650 return 0;
8651 name_str = args[0].data.str.str;
8652 name_len = args[0].data.str.len;
8653
8654 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8655 occ = args[1].data.uint;
8656 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8657
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8658 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8659
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8660 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8661 /* search for header from the beginning */
8662 ctx->idx = 0;
8663
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8664 if (!occ && !(opt & SMP_OPT_ITERATE))
8665 /* no explicit occurrence and single fetch => last header by default */
8666 occ = -1;
8667
8668 if (!occ)
8669 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8670 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8671
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8672 smp->type = SMP_T_CSTR;
8673 smp->flags |= SMP_F_VOL_HDR;
8674 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]8675 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8676
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8677 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8678 return 0;
8679}
8680
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8681/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8682 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8683 */
8684static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8685smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8686 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8687{
8688 struct http_txn *txn = l7;
8689 struct hdr_idx *idx = &txn->hdr_idx;
8690 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8691 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]8692 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8693
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8694 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8695 return 0;
8696
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8697 CHECK_HTTP_MESSAGE_FIRST();
8698
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8699 ctx.idx = 0;
8700 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8701 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]8702 cnt++;
8703
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8704 smp->type = SMP_T_UINT;
8705 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8706 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8707 return 1;
8708}
8709
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8710/* Fetch an HTTP header's integer value. The integer value is returned. It
8711 * takes a mandatory argument of type string and an optional one of type int
8712 * to designate a specific occurrence. It returns an unsigned integer, which
8713 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8714 */
8715static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8716smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8717 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8718{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8719 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8720
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8721 if (ret > 0) {
8722 smp->type = SMP_T_UINT;
8723 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8724 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8725
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8726 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8727}
8728
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8729/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8730 * and an optional one of type int to designate a specific occurrence.
8731 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8732 */
8733static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8734smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8735 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8736{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8737 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8738
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8739 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8740 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8741 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8742 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8743 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8744 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8745 if (smp->data.str.len < temp->size - 1) {
8746 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8747 temp->str[smp->data.str.len] = '\0';
8748 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8749 smp->type = SMP_T_IPV6;
8750 break;
8751 }
8752 }
8753 }
8754
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8755 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8756 if (!(smp->flags & SMP_F_NOT_LAST))
8757 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8758 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8759 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8760}
8761
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8762/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8763 * the first '/' after the possible hostname, and ends before the possible '?'.
8764 */
8765static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8766smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8767 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8768{
8769 struct http_txn *txn = l7;
8770 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8771
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8772 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8773
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8774 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]8775 ptr = http_get_path(txn);
8776 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8777 return 0;
8778
8779 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8780 smp->type = SMP_T_CSTR;
8781 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8782
8783 while (ptr < end && *ptr != '?')
8784 ptr++;
8785
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8786 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8787 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8788 return 1;
8789}
8790
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8791/* This produces a concatenation of the first occurrence of the Host header
8792 * followed by the path component if it begins with a slash ('/'). This means
8793 * that '*' will not be added, resulting in exactly the first Host entry.
8794 * If no Host header is found, then the path is returned as-is. The returned
8795 * value is stored in the trash so it does not need to be marked constant.
8796 */
8797static int
8798smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8799 const struct arg *args, struct sample *smp)
8800{
8801 struct http_txn *txn = l7;
8802 char *ptr, *end, *beg;
8803 struct hdr_ctx ctx;
8804
8805 CHECK_HTTP_MESSAGE_FIRST();
8806
8807 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8808 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]8809 !ctx.vlen)
8810 return smp_fetch_path(px, l4, l7, opt, args, smp);
8811
8812 /* 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]8813 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8814 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8815 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8816 smp->data.str.len = ctx.vlen;
8817
8818 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8819 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]8820 beg = http_get_path(txn);
8821 if (!beg)
8822 beg = end;
8823
8824 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8825
8826 if (beg < ptr && *beg == '/') {
8827 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8828 smp->data.str.len += ptr - beg;
8829 }
8830
8831 smp->flags = SMP_F_VOL_1ST;
8832 return 1;
8833}
8834
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]8835/* This produces a 32-bit hash of the concatenation of the first occurrence of
8836 * the Host header followed by the path component if it begins with a slash ('/').
8837 * This means that '*' will not be added, resulting in exactly the first Host
8838 * entry. If no Host header is found, then the path is used. The resulting value
8839 * is hashed using the url hash followed by a full avalanche hash and provides a
8840 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
8841 * high-traffic sites without having to store whole paths.
8842 */
8843static int
8844smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8845 const struct arg *args, struct sample *smp)
8846{
8847 struct http_txn *txn = l7;
8848 struct hdr_ctx ctx;
8849 unsigned int hash = 0;
8850 char *ptr, *beg, *end;
8851 int len;
8852
8853 CHECK_HTTP_MESSAGE_FIRST();
8854
8855 ctx.idx = 0;
8856 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
8857 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8858 ptr = ctx.line + ctx.val;
8859 len = ctx.vlen;
8860 while (len--)
8861 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
8862 }
8863
8864 /* now retrieve the path */
8865 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
8866 beg = http_get_path(txn);
8867 if (!beg)
8868 beg = end;
8869
8870 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8871
8872 if (beg < ptr && *beg == '/') {
8873 while (beg < ptr)
8874 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
8875 }
8876 hash = full_hash(hash);
8877
8878 smp->type = SMP_T_UINT;
8879 smp->data.uint = hash;
8880 smp->flags = SMP_F_VOL_1ST;
8881 return 1;
8882}
8883
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8884/* This concatenates the source address with the 32-bit hash of the Host and
8885 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
8886 * per-url counters. The result is a binary block from 8 to 20 bytes depending
8887 * on the source address length. The URL hash is stored before the address so
8888 * that in environments where IPv6 is insignificant, truncating the output to
8889 * 8 bytes would still work.
8890 */
8891static int
8892smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8893 const struct arg *args, struct sample *smp)
8894{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8895 struct chunk *temp;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8896
8897 if (!smp_fetch_base32(px, l4, l7, opt, args, smp))
8898 return 0;
8899
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8900 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8901 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
8902 temp->len += sizeof(smp->data.uint);
8903
8904 switch (l4->si[0].conn->addr.from.ss_family) {
8905 case AF_INET:
8906 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
8907 temp->len += 4;
8908 break;
8909 case AF_INET6:
8910 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
8911 temp->len += 16;
8912 break;
8913 default:
8914 return 0;
8915 }
8916
8917 smp->data.str = *temp;
8918 smp->type = SMP_T_BIN;
8919 return 1;
8920}
8921
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8922static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8923acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8924 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8925{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8926 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8927 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8928 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8929
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8930 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8931
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8932 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8933 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8934 return 1;
8935}
8936
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8937/* return a valid test if the current request is the first one on the connection */
8938static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8939acl_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]8940 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8941{
8942 if (!s)
8943 return 0;
8944
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8945 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8946 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8947 return 1;
8948}
8949
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8950/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8951static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8952acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8953 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8954{
8955
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8956 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8957 return 0;
8958
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8959 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8960
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8961 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8962 return 0;
8963
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8964 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8965 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]8966 return 1;
8967}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8968
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8969/* Accepts exactly 1 argument of type userlist */
8970static int
8971acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8972 const struct arg *args, struct sample *smp)
8973{
8974
8975 if (!args || args->type != ARGT_USR)
8976 return 0;
8977
8978 CHECK_HTTP_MESSAGE_FIRST();
8979
8980 if (!get_http_auth(l4))
8981 return 0;
8982
8983 /* acl_match_auth() will need several information at once */
8984 smp->ctx.a[0] = args->data.usr; /* user list */
8985 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8986 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8987
8988 /* if the user does not belong to the userlist or has a wrong password,
8989 * report that it unconditionally does not match. Otherwise we return
8990 * a non-zero integer which will be ignored anyway since all the params
8991 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8992 */
8993 smp->type = SMP_T_BOOL;
8994 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8995 if (smp->data.uint)
8996 smp->type = SMP_T_UINT;
8997
8998 return 1;
8999}
9000
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9001/* Try to find the next occurrence of a cookie name in a cookie header value.
9002 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9003 * the cookie value is returned into *value and *value_l, and the function
9004 * returns a pointer to the next pointer to search from if the value was found.
9005 * Otherwise if the cookie was not found, NULL is returned and neither value
9006 * nor value_l are touched. The input <hdr> string should first point to the
9007 * header's value, and the <hdr_end> pointer must point to the first character
9008 * not part of the value. <list> must be non-zero if value may represent a list
9009 * of values (cookie headers). This makes it faster to abort parsing when no
9010 * list is expected.
9011 */
9012static char *
9013extract_cookie_value(char *hdr, const char *hdr_end,
9014 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9015 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9016{
9017 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9018 char *next;
9019
9020 /* we search at least a cookie name followed by an equal, and more
9021 * generally something like this :
9022 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9023 */
9024 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9025 /* Iterate through all cookies on this line */
9026
9027 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9028 att_beg++;
9029
9030 /* find att_end : this is the first character after the last non
9031 * space before the equal. It may be equal to hdr_end.
9032 */
9033 equal = att_end = att_beg;
9034
9035 while (equal < hdr_end) {
9036 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9037 break;
9038 if (http_is_spht[(unsigned char)*equal++])
9039 continue;
9040 att_end = equal;
9041 }
9042
9043 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9044 * is between <att_beg> and <equal>, both may be identical.
9045 */
9046
9047 /* look for end of cookie if there is an equal sign */
9048 if (equal < hdr_end && *equal == '=') {
9049 /* look for the beginning of the value */
9050 val_beg = equal + 1;
9051 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9052 val_beg++;
9053
9054 /* find the end of the value, respecting quotes */
9055 next = find_cookie_value_end(val_beg, hdr_end);
9056
9057 /* make val_end point to the first white space or delimitor after the value */
9058 val_end = next;
9059 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9060 val_end--;
9061 } else {
9062 val_beg = val_end = next = equal;
9063 }
9064
9065 /* We have nothing to do with attributes beginning with '$'. However,
9066 * they will automatically be removed if a header before them is removed,
9067 * since they're supposed to be linked together.
9068 */
9069 if (*att_beg == '$')
9070 continue;
9071
9072 /* Ignore cookies with no equal sign */
9073 if (equal == next)
9074 continue;
9075
9076 /* Now we have the cookie name between att_beg and att_end, and
9077 * its value between val_beg and val_end.
9078 */
9079
9080 if (att_end - att_beg == cookie_name_l &&
9081 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9082 /* let's return this value and indicate where to go on from */
9083 *value = val_beg;
9084 *value_l = val_end - val_beg;
9085 return next + 1;
9086 }
9087
9088 /* Set-Cookie headers only have the name in the first attr=value part */
9089 if (!list)
9090 break;
9091 }
9092
9093 return NULL;
9094}
9095
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9096/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9097 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
9098 * 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]9099 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9100 * 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]9101 * Accepts exactly 1 argument of type string. If the input options indicate
9102 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9103 */
9104static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9105smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9106 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9107{
9108 struct http_txn *txn = l7;
9109 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9110 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9111 const struct http_msg *msg;
9112 const char *hdr_name;
9113 int hdr_name_len;
9114 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9115 int occ = 0;
9116 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9117
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9118 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9119 return 0;
9120
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9121 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9122
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9123 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9124 msg = &txn->req;
9125 hdr_name = "Cookie";
9126 hdr_name_len = 6;
9127 } else {
9128 msg = &txn->rsp;
9129 hdr_name = "Set-Cookie";
9130 hdr_name_len = 10;
9131 }
9132
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9133 if (!occ && !(opt & SMP_OPT_ITERATE))
9134 /* no explicit occurrence and single fetch => last cookie by default */
9135 occ = -1;
9136
9137 /* OK so basically here, either we want only one value and it's the
9138 * last one, or we want to iterate over all of them and we fetch the
9139 * next one.
9140 */
9141
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9142 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9143 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9144 /* search for the header from the beginning, we must first initialize
9145 * the search parameters.
9146 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9147 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9148 ctx->idx = 0;
9149 }
9150
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9151 smp->flags |= SMP_F_VOL_HDR;
9152
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9153 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9154 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9155 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9156 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9157 goto out;
9158
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9159 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9160 continue;
9161
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9162 smp->ctx.a[0] = ctx->line + ctx->val;
9163 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9164 }
9165
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9166 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9167 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]9168 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9169 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9170 &smp->data.str.str,
9171 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9172 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9173 found = 1;
9174 if (occ >= 0) {
9175 /* one value was returned into smp->data.str.{str,len} */
9176 smp->flags |= SMP_F_NOT_LAST;
9177 return 1;
9178 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9179 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9180 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9181 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9182 /* all cookie headers and values were scanned. If we're looking for the
9183 * last occurrence, we may return it now.
9184 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9185 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9186 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9187 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9188}
9189
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9190/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9191 * 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]9192 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9193 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9194 */
9195static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9196acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9197 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9198{
9199 struct http_txn *txn = l7;
9200 struct hdr_idx *idx = &txn->hdr_idx;
9201 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9202 const struct http_msg *msg;
9203 const char *hdr_name;
9204 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9205 int cnt;
9206 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9207 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9208
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9209 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9210 return 0;
9211
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9212 CHECK_HTTP_MESSAGE_FIRST();
9213
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9214 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9215 msg = &txn->req;
9216 hdr_name = "Cookie";
9217 hdr_name_len = 6;
9218 } else {
9219 msg = &txn->rsp;
9220 hdr_name = "Set-Cookie";
9221 hdr_name_len = 10;
9222 }
9223
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9224 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9225 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9226 ctx.idx = 0;
9227 cnt = 0;
9228
9229 while (1) {
9230 /* Note: val_beg == NULL every time we need to fetch a new header */
9231 if (!val_beg) {
9232 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9233 break;
9234
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9235 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9236 continue;
9237
9238 val_beg = ctx.line + ctx.val;
9239 val_end = val_beg + ctx.vlen;
9240 }
9241
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9242 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9243 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9244 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9245 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9246 &smp->data.str.str,
9247 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9248 cnt++;
9249 }
9250 }
9251
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9252 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9253 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9254 return 1;
9255}
9256
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9257/* Fetch an cookie's integer value. The integer value is returned. It
9258 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9259 */
9260static int
9261smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9262 const struct arg *args, struct sample *smp)
9263{
9264 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
9265
9266 if (ret > 0) {
9267 smp->type = SMP_T_UINT;
9268 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9269 }
9270
9271 return ret;
9272}
9273
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9274/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9275/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9276/************************************************************************/
9277
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9278/*
9279 * Given a path string and its length, find the position of beginning of the
9280 * query string. Returns NULL if no query string is found in the path.
9281 *
9282 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9283 *
9284 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9285 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9286static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9287{
9288 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9289
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9290 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9291 return p ? p + 1 : NULL;
9292}
9293
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9294static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9295{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9296 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9297}
9298
9299/*
9300 * Given a url parameter, find the starting position of the first occurence,
9301 * or NULL if the parameter is not found.
9302 *
9303 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9304 * the function will return query_string+8.
9305 */
9306static char*
9307find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9308 char* url_param_name, size_t url_param_name_l,
9309 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9310{
9311 char *pos, *last;
9312
9313 pos = query_string;
9314 last = query_string + query_string_l - url_param_name_l - 1;
9315
9316 while (pos <= last) {
9317 if (pos[url_param_name_l] == '=') {
9318 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9319 return pos;
9320 pos += url_param_name_l + 1;
9321 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9322 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9323 pos++;
9324 pos++;
9325 }
9326 return NULL;
9327}
9328
9329/*
9330 * Given a url parameter name, returns its value and size into *value and
9331 * *value_l respectively, and returns non-zero. If the parameter is not found,
9332 * zero is returned and value/value_l are not touched.
9333 */
9334static int
9335find_url_param_value(char* path, size_t path_l,
9336 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9337 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9338{
9339 char *query_string, *qs_end;
9340 char *arg_start;
9341 char *value_start, *value_end;
9342
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9343 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9344 if (!query_string)
9345 return 0;
9346
9347 qs_end = path + path_l;
9348 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9349 url_param_name, url_param_name_l,
9350 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9351 if (!arg_start)
9352 return 0;
9353
9354 value_start = arg_start + url_param_name_l + 1;
9355 value_end = value_start;
9356
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9357 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9358 value_end++;
9359
9360 *value = value_start;
9361 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9362 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9363}
9364
9365static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9366smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9367 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9368{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9369 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9370 struct http_txn *txn = l7;
9371 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9372
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9373 if (!args || args[0].type != ARGT_STR ||
9374 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9375 return 0;
9376
9377 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9378
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9379 if (args[1].type)
9380 delim = *args[1].data.str.str;
9381
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9382 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]9383 args->data.str.str, args->data.str.len,
9384 &smp->data.str.str, &smp->data.str.len,
9385 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9386 return 0;
9387
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9388 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9389 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9390 return 1;
9391}
9392
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9393/* Return the signed integer value for the specified url parameter (see url_param
9394 * above).
9395 */
9396static int
9397smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9398 const struct arg *args, struct sample *smp)
9399{
9400 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
9401
9402 if (ret > 0) {
9403 smp->type = SMP_T_UINT;
9404 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9405 }
9406
9407 return ret;
9408}
9409
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9410/* This function is used to validate the arguments passed to any "hdr" fetch
9411 * keyword. These keywords support an optional positive or negative occurrence
9412 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9413 * is assumed that the types are already the correct ones. Returns 0 on error,
9414 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9415 * error message in case of error, that the caller is responsible for freeing.
9416 * The initial location must either be freeable or NULL.
9417 */
9418static int val_hdr(struct arg *arg, char **err_msg)
9419{
9420 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9421 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9422 return 0;
9423 }
9424 return 1;
9425}
9426
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9427/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9428/* All supported ACL keywords must be declared here. */
9429/************************************************************************/
9430
9431/* Note: must not be declared <const> as its list will be overwritten.
9432 * Please take care of keeping this list alphabetically sorted.
9433 */
9434static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9435 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9436 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9437 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9438 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9439 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9440 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9441 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9442 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
9443
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9444 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9445 { "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]9446 { "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]9447 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9448 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9449 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9450 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9451 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9452 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9453 { "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]9454
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9455 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9456 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9457 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9458 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9459 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9460 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9461 { "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 },
9462 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9463 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9464 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9465 { "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]9466
9467 { "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]9468 { "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]9469 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9470
9471 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
9472
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9473 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9474 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9475 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9476 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9477 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9478 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9479 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9480 { "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]9481
9482 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9483 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9484 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
9485
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9486 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9487 { "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]9488 { "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]9489 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9490 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9491 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9492 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9493 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9494 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9495 { "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]9496
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9497 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9498 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9499 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9500 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9501 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9502 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9503 { "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 },
9504 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9505 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9506 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9507 { "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]9508
9509 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9510
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9511 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9512 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9513 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9514 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9515 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9516 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9517 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9518 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9519 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9520 { "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]9521
9522 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9523 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9524 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9525 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9526 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9527 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9528 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9529 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9530 { "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]9531 { "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]9532
9533 { NULL, NULL, NULL, NULL },
9534}};
9535
9536/************************************************************************/
9537/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9538/************************************************************************/
9539/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9540static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9541 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9542 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9543 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9544 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9545 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9546 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9547 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9548 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9549 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9550 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9551 { "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]9552 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9553}};
9554
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9555
9556__attribute__((constructor))
9557static void __http_protocol_init(void)
9558{
9559 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9560 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9561}
9562
9563
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9564/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9565 * Local variables:
9566 * c-indent-level: 8
9567 * c-basic-offset: 8
9568 * End:
9569 */