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git01.mediatek.com / haproxy / 7d588eed783aa9154e5fca3b4fa9fdcbaae93467 / . / src / proto_http.c
blob: 6f1b9d796b0a68e16758015942e9d02617c33f8b [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 Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]752/* Returns a 302 for a redirectable request. This may only be called just after
753 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
754 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]755 * NOTE: this function is designed to support being called once data are scheduled
756 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]757 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]758void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759{
760 struct http_txn *txn;
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 Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]820 if (srv)
821 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]822}
823
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]824/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]825 * that the server side is closed. Note that err_type is actually a
826 * bitmask, where almost only aborts may be cumulated with other
827 * values. We consider that aborted operations are more important
828 * than timeouts or errors due to the fact that nobody else in the
829 * logs might explain incomplete retries. All others should avoid
830 * being cumulated. It should normally not be possible to have multiple
831 * aborts at once, but just in case, the first one in sequence is reported.
832 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]833void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]834{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]835 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]836
837 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]838 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]839 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]840 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]841 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]842 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]843 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]844 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]845 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]846 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]847 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]848 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]849 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]850 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]851 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]852 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]853 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]854 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]855 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]856 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]857 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]858}
859
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]860extern const char sess_term_cond[8];
861extern const char sess_fin_state[8];
862extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]863struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]864struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]865struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]866
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]867/*
868 * Capture headers from message starting at <som> according to header list
869 * <cap_hdr>, and fill the <idx> structure appropriately.
870 */
871void capture_headers(char *som, struct hdr_idx *idx,
872 char **cap, struct cap_hdr *cap_hdr)
873{
874 char *eol, *sol, *col, *sov;
875 int cur_idx;
876 struct cap_hdr *h;
877 int len;
878
879 sol = som + hdr_idx_first_pos(idx);
880 cur_idx = hdr_idx_first_idx(idx);
881
882 while (cur_idx) {
883 eol = sol + idx->v[cur_idx].len;
884
885 col = sol;
886 while (col < eol && *col != ':')
887 col++;
888
889 sov = col + 1;
890 while (sov < eol && http_is_lws[(unsigned char)*sov])
891 sov++;
892
893 for (h = cap_hdr; h; h = h->next) {
894 if ((h->namelen == col - sol) &&
895 (strncasecmp(sol, h->name, h->namelen) == 0)) {
896 if (cap[h->index] == NULL)
897 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]898 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]899
900 if (cap[h->index] == NULL) {
901 Alert("HTTP capture : out of memory.\n");
902 continue;
903 }
904
905 len = eol - sov;
906 if (len > h->len)
907 len = h->len;
908
909 memcpy(cap[h->index], sov, len);
910 cap[h->index][len]=0;
911 }
912 }
913 sol = eol + idx->v[cur_idx].cr + 1;
914 cur_idx = idx->v[cur_idx].next;
915 }
916}
917
918
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]919/* either we find an LF at <ptr> or we jump to <bad>.
920 */
921#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
922
923/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
924 * otherwise to <http_msg_ood> with <state> set to <st>.
925 */
926#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
927 ptr++; \
928 if (likely(ptr < end)) \
929 goto good; \
930 else { \
931 state = (st); \
932 goto http_msg_ood; \
933 } \
934 } while (0)
935
936
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]938 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]939 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
940 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
941 * will give undefined results.
942 * Note that it is upon the caller's responsibility to ensure that ptr < end,
943 * and that msg->sol points to the beginning of the response.
944 * If a complete line is found (which implies that at least one CR or LF is
945 * found before <end>, the updated <ptr> is returned, otherwise NULL is
946 * returned indicating an incomplete line (which does not mean that parts have
947 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
948 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
949 * upon next call.
950 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]951 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]952 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
953 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]954 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]955 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]956const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]957 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]958 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]959{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]960 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]961
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]962 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]963 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]964 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]965 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]966 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
967
968 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]969 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]970 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
971 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]972 state = HTTP_MSG_ERROR;
973 break;
974
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]976 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]977 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]978 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]979 goto http_msg_rpcode;
980 }
981 if (likely(HTTP_IS_SPHT(*ptr)))
982 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
983 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]984 state = HTTP_MSG_ERROR;
985 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]986
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]987 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]988 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]989 if (likely(!HTTP_IS_LWS(*ptr)))
990 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
991
992 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]993 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]994 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
995 }
996
997 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]998 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]999 http_msg_rsp_reason:
1000 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1001 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1002 msg->sl.st.r_l = 0;
1003 goto http_msg_rpline_eol;
1004
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1005 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1006 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1007 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1008 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1009 goto http_msg_rpreason;
1010 }
1011 if (likely(HTTP_IS_SPHT(*ptr)))
1012 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1013 /* so it's a CR/LF, so there is no reason phrase */
1014 goto http_msg_rsp_reason;
1015
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1016 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1017 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1018 if (likely(!HTTP_IS_CRLF(*ptr)))
1019 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1020 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1021 http_msg_rpline_eol:
1022 /* We have seen the end of line. Note that we do not
1023 * necessarily have the \n yet, but at least we know that we
1024 * have EITHER \r OR \n, otherwise the response would not be
1025 * complete. We can then record the response length and return
1026 * to the caller which will be able to register it.
1027 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1028 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1029 return ptr;
1030
1031#ifdef DEBUG_FULL
1032 default:
1033 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1034 exit(1);
1035#endif
1036 }
1037
1038 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1039 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1040 if (ret_state)
1041 *ret_state = state;
1042 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1043 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1044 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045}
1046
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1047/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1048 * This function parses a request line between <ptr> and <end>, starting with
1049 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1050 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1051 * will give undefined results.
1052 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1053 * and that msg->sol points to the beginning of the request.
1054 * If a complete line is found (which implies that at least one CR or LF is
1055 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1056 * returned indicating an incomplete line (which does not mean that parts have
1057 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1058 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1059 * upon next call.
1060 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1061 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1062 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1063 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1064 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1065 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1066const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1067 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1068 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1069{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1070 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1071
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1074 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 if (likely(HTTP_IS_TOKEN(*ptr)))
1076 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1079 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1081 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1082
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1083 if (likely(HTTP_IS_CRLF(*ptr))) {
1084 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1085 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1086 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1087 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1089 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1090 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1091 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1092 msg->sl.rq.v_l = 0;
1093 goto http_msg_rqline_eol;
1094 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1095 state = HTTP_MSG_ERROR;
1096 break;
1097
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1099 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1100 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1101 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1102 goto http_msg_rquri;
1103 }
1104 if (likely(HTTP_IS_SPHT(*ptr)))
1105 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1106 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1107 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1108
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1109 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1110 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1111 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1112 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1115 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1116 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1117 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1118
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1119 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1120 /* non-ASCII chars are forbidden unless option
1121 * accept-invalid-http-request is enabled in the frontend.
1122 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1123 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1124 if (msg->err_pos < -1)
1125 goto invalid_char;
1126 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1127 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1128 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1129 }
1130
1131 if (likely(HTTP_IS_CRLF(*ptr))) {
1132 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1133 goto http_msg_req09_uri_e;
1134 }
1135
1136 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1137 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1138 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1139 state = HTTP_MSG_ERROR;
1140 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1141
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1142 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1143 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1144 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1145 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1146 goto http_msg_rqver;
1147 }
1148 if (likely(HTTP_IS_SPHT(*ptr)))
1149 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1150 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1151 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1152
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1153 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1154 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1155 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1157
1158 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1159 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1160 http_msg_rqline_eol:
1161 /* We have seen the end of line. Note that we do not
1162 * necessarily have the \n yet, but at least we know that we
1163 * have EITHER \r OR \n, otherwise the request would not be
1164 * complete. We can then record the request length and return
1165 * to the caller which will be able to register it.
1166 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1167 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1168 return ptr;
1169 }
1170
1171 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1172 state = HTTP_MSG_ERROR;
1173 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1174
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1175#ifdef DEBUG_FULL
1176 default:
1177 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1178 exit(1);
1179#endif
1180 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1181
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1183 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 if (ret_state)
1185 *ret_state = state;
1186 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1187 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1188 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1190
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1191/*
1192 * Returns the data from Authorization header. Function may be called more
1193 * than once so data is stored in txn->auth_data. When no header is found
1194 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1195 * searching again for something we are unable to find anyway.
1196 */
1197
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1198char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1199
1200int
1201get_http_auth(struct session *s)
1202{
1203
1204 struct http_txn *txn = &s->txn;
1205 struct chunk auth_method;
1206 struct hdr_ctx ctx;
1207 char *h, *p;
1208 int len;
1209
1210#ifdef DEBUG_AUTH
1211 printf("Auth for session %p: %d\n", s, txn->auth.method);
1212#endif
1213
1214 if (txn->auth.method == HTTP_AUTH_WRONG)
1215 return 0;
1216
1217 if (txn->auth.method)
1218 return 1;
1219
1220 txn->auth.method = HTTP_AUTH_WRONG;
1221
1222 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1223
1224 if (txn->flags & TX_USE_PX_CONN) {
1225 h = "Proxy-Authorization";
1226 len = strlen(h);
1227 } else {
1228 h = "Authorization";
1229 len = strlen(h);
1230 }
1231
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1232 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]1233 return 0;
1234
1235 h = ctx.line + ctx.val;
1236
1237 p = memchr(h, ' ', ctx.vlen);
1238 if (!p || p == h)
1239 return 0;
1240
1241 chunk_initlen(&auth_method, h, 0, p-h);
1242 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1243
1244 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1245
1246 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1247 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1248
1249 if (len < 0)
1250 return 0;
1251
1252
1253 get_http_auth_buff[len] = '\0';
1254
1255 p = strchr(get_http_auth_buff, ':');
1256
1257 if (!p)
1258 return 0;
1259
1260 txn->auth.user = get_http_auth_buff;
1261 *p = '\0';
1262 txn->auth.pass = p+1;
1263
1264 txn->auth.method = HTTP_AUTH_BASIC;
1265 return 1;
1266 }
1267
1268 return 0;
1269}
1270
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1271
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1272/*
1273 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1274 * depending on the initial msg->msg_state. The caller is responsible for
1275 * ensuring that the message does not wrap. The function can be preempted
1276 * everywhere when data are missing and recalled at the exact same location
1277 * with no information loss. The message may even be realigned between two
1278 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1279 * 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]1280 * fields. Note that msg->sol will be initialized after completing the first
1281 * state, so that none of the msg pointers has to be initialized prior to the
1282 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1283 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1284void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1285{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1286 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1287 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1288 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1289
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1290 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1291 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1292 ptr = buf->p + msg->next;
1293 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1294
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1295 if (unlikely(ptr >= end))
1296 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1297
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1298 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1299 /*
1300 * First, states that are specific to the response only.
1301 * We check them first so that request and headers are
1302 * closer to each other (accessed more often).
1303 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1304 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1305 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1306 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1307 /* we have a start of message, but we have to check
1308 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1309 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1310 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1311 if (unlikely(ptr != buf->p)) {
1312 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1313 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1314 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1315 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1316 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1317 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1318 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1319 hdr_idx_init(idx);
1320 state = HTTP_MSG_RPVER;
1321 goto http_msg_rpver;
1322 }
1323
1324 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1325 goto http_msg_invalid;
1326
1327 if (unlikely(*ptr == '\n'))
1328 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1329 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1330 /* stop here */
1331
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1333 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1334 EXPECT_LF_HERE(ptr, http_msg_invalid);
1335 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1336 /* stop here */
1337
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1338 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1339 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1340 case HTTP_MSG_RPVER_SP:
1341 case HTTP_MSG_RPCODE:
1342 case HTTP_MSG_RPCODE_SP:
1343 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1344 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1345 state, ptr, end,
1346 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1347 if (unlikely(!ptr))
1348 return;
1349
1350 /* we have a full response and we know that we have either a CR
1351 * or an LF at <ptr>.
1352 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1354
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1355 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 if (likely(*ptr == '\r'))
1357 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1358 goto http_msg_rpline_end;
1359
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1360 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1361 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 /* msg->sol must point to the first of CR or LF. */
1363 EXPECT_LF_HERE(ptr, http_msg_invalid);
1364 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1365 /* stop here */
1366
1367 /*
1368 * Second, states that are specific to the request only
1369 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1371 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1372 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1373 /* we have a start of message, but we have to check
1374 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1375 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1376 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1377 if (likely(ptr != buf->p)) {
1378 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1379 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1380 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1381 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1383 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1384 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1385 state = HTTP_MSG_RQMETH;
1386 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1387 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1390 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1391
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 if (unlikely(*ptr == '\n'))
1393 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1394 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1395 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1398 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1399 EXPECT_LF_HERE(ptr, http_msg_invalid);
1400 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1401 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1402
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1403 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1404 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1405 case HTTP_MSG_RQMETH_SP:
1406 case HTTP_MSG_RQURI:
1407 case HTTP_MSG_RQURI_SP:
1408 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1409 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1410 state, ptr, end,
1411 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 if (unlikely(!ptr))
1413 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1414
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1415 /* we have a full request and we know that we have either a CR
1416 * or an LF at <ptr>.
1417 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1419
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1420 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1421 if (likely(*ptr == '\r'))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1426 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 /* check for HTTP/0.9 request : no version information available.
1428 * msg->sol must point to the first of CR or LF.
1429 */
1430 if (unlikely(msg->sl.rq.v_l == 0))
1431 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1432
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 EXPECT_LF_HERE(ptr, http_msg_invalid);
1434 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1435 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1436
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 /*
1438 * Common states below
1439 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1441 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1442 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1443 if (likely(!HTTP_IS_CRLF(*ptr))) {
1444 goto http_msg_hdr_name;
1445 }
1446
1447 if (likely(*ptr == '\r'))
1448 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1449 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1450
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1451 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1452 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1453 /* assumes msg->sol points to the first char */
1454 if (likely(HTTP_IS_TOKEN(*ptr)))
1455 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1456
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1457 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1459
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1460 if (likely(msg->err_pos < -1) || *ptr == '\n')
1461 goto http_msg_invalid;
1462
1463 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1464 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1465
1466 /* and we still accept this non-token character */
1467 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1468
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1469 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1470 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1471 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1472 if (likely(HTTP_IS_SPHT(*ptr)))
1473 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1474
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1475 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1476 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1477
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 if (likely(!HTTP_IS_CRLF(*ptr))) {
1479 goto http_msg_hdr_val;
1480 }
1481
1482 if (likely(*ptr == '\r'))
1483 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1484 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1485
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1487 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 EXPECT_LF_HERE(ptr, http_msg_invalid);
1489 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1492 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 if (likely(HTTP_IS_SPHT(*ptr))) {
1494 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1495 for (; buf->p + msg->sov < ptr; msg->sov++)
1496 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 goto http_msg_hdr_l1_sp;
1498 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1499 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1500 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 goto http_msg_complete_header;
1502
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1504 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1505 /* assumes msg->sol points to the first char, and msg->sov
1506 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 */
1508 if (likely(!HTTP_IS_CRLF(*ptr)))
1509 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1510
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1511 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 /* Note: we could also copy eol into ->eoh so that we have the
1513 * real header end in case it ends with lots of LWS, but is this
1514 * really needed ?
1515 */
1516 if (likely(*ptr == '\r'))
1517 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1518 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1521 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 EXPECT_LF_HERE(ptr, http_msg_invalid);
1523 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1524
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1526 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1528 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1529 for (; buf->p + msg->eol < ptr; msg->eol++)
1530 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 goto http_msg_hdr_val;
1532 }
1533 http_msg_complete_header:
1534 /*
1535 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1536 * Assumes msg->sol points to the first char, msg->sov points
1537 * to the first character of the value and msg->eol to the
1538 * first CR or LF so we know how the line ends. We insert last
1539 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1540 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1541 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 idx, idx->tail) < 0))
1543 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1544
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1545 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 if (likely(!HTTP_IS_CRLF(*ptr))) {
1547 goto http_msg_hdr_name;
1548 }
1549
1550 if (likely(*ptr == '\r'))
1551 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1552 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1553
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1555 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 /* Assumes msg->sol points to the first of either CR or LF */
1557 EXPECT_LF_HERE(ptr, http_msg_invalid);
1558 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1559 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1560 msg->eoh = msg->sol;
1561 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1562 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1563 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1564
1565 case HTTP_MSG_ERROR:
1566 /* this may only happen if we call http_msg_analyser() twice with an error */
1567 break;
1568
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569#ifdef DEBUG_FULL
1570 default:
1571 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1572 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1573#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 }
1575 http_msg_ood:
1576 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1577 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1578 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 http_msg_invalid:
1582 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1583 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1584 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 return;
1586}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1587
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1588/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1589 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1590 * nothing is done and 1 is returned.
1591 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1592static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1593{
1594 int delta;
1595 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1596 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1597
1598 if (msg->sl.rq.v_l != 0)
1599 return 1;
1600
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1601 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1602 delta = 0;
1603
1604 if (msg->sl.rq.u_l == 0) {
1605 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1606 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1607 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1608 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1609 }
1610 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1611 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]1612 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1613 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1614 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1615 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1616 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1617 NULL, NULL);
1618 if (unlikely(!cur_end))
1619 return 0;
1620
1621 /* we have a full HTTP/1.0 request now and we know that
1622 * we have either a CR or an LF at <ptr>.
1623 */
1624 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1625 return 1;
1626}
1627
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1628/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1629 * and "keep-alive" values. If we already know that some headers may safely
1630 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1631 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1632 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1633 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1634 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1635 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1636 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1637 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1638 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1639void 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]1640{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1641 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1642 const char *hdr_val = "Connection";
1643 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1644
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1645 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1646 return;
1647
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1648 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1649 hdr_val = "Proxy-Connection";
1650 hdr_len = 16;
1651 }
1652
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1653 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1654 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1655 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]1656 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1657 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1658 if (to_del & 2)
1659 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1660 else
1661 txn->flags |= TX_CON_KAL_SET;
1662 }
1663 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1664 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1665 if (to_del & 1)
1666 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1667 else
1668 txn->flags |= TX_CON_CLO_SET;
1669 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1670 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1671 txn->flags |= TX_HDR_CONN_UPG;
1672 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1673 }
1674
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1675 txn->flags |= TX_HDR_CONN_PRS;
1676 return;
1677}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1678
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1679/* Apply desired changes on the Connection: header. Values may be removed and/or
1680 * added depending on the <wanted> flags, which are exclusively composed of
1681 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1682 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1683 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1684void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1685{
1686 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1687 const char *hdr_val = "Connection";
1688 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1689
1690 ctx.idx = 0;
1691
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1692
1693 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1694 hdr_val = "Proxy-Connection";
1695 hdr_len = 16;
1696 }
1697
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1698 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1699 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]1700 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1701 if (wanted & TX_CON_KAL_SET)
1702 txn->flags |= TX_CON_KAL_SET;
1703 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1704 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1705 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1706 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1707 if (wanted & TX_CON_CLO_SET)
1708 txn->flags |= TX_CON_CLO_SET;
1709 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1710 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1711 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1712 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1713
1714 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1715 return;
1716
1717 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1718 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1719 hdr_val = "Connection: close";
1720 hdr_len = 17;
1721 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1722 hdr_val = "Proxy-Connection: close";
1723 hdr_len = 23;
1724 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1725 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1726 }
1727
1728 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1729 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1730 hdr_val = "Connection: keep-alive";
1731 hdr_len = 22;
1732 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1733 hdr_val = "Proxy-Connection: keep-alive";
1734 hdr_len = 28;
1735 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1736 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1737 }
1738 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1739}
1740
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1741/* 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]1742 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1743 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1744 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1745 * 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]1746 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1747static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1748{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1749 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1750 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1751 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1752 const char *end = buf->data + buf->size;
1753 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1754 unsigned int chunk = 0;
1755
1756 /* The chunk size is in the following form, though we are only
1757 * interested in the size and CRLF :
1758 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1759 */
1760 while (1) {
1761 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1762 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1763 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1764 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1765 if (c < 0) /* not a hex digit anymore */
1766 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1767 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1768 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1769 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1770 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1771 chunk = (chunk << 4) + c;
1772 }
1773
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1774 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1775 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1776 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1777
1778 while (http_is_spht[(unsigned char)*ptr]) {
1779 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1780 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1781 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1782 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 }
1784
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1785 /* Up to there, we know that at least one byte is present at *ptr. Check
1786 * for the end of chunk size.
1787 */
1788 while (1) {
1789 if (likely(HTTP_IS_CRLF(*ptr))) {
1790 /* we now have a CR or an LF at ptr */
1791 if (likely(*ptr == '\r')) {
1792 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1793 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1794 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1795 return 0;
1796 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1797
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1798 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1799 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1800 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1801 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1802 /* done */
1803 break;
1804 }
1805 else if (*ptr == ';') {
1806 /* chunk extension, ends at next CRLF */
1807 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1808 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1809 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1810 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1811
1812 while (!HTTP_IS_CRLF(*ptr)) {
1813 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1814 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1815 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1816 return 0;
1817 }
1818 /* we have a CRLF now, loop above */
1819 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1820 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1821 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1822 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1823 }
1824
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1825 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1826 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1827 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1828 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1829 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1830 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1831 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1832 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1833 msg->chunk_len = chunk;
1834 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1835 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1836 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1837 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1838 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1839 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1840}
1841
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1842/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1843 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1844 * the trailers is found, it is automatically scheduled to be forwarded,
1845 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1846 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1847 * 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]1848 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1849 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1850 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1851 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1852 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1853 * matches the length of trailers already parsed and not forwarded. It is also
1854 * important to note that this function is designed to be able to parse wrapped
1855 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1856 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1857static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1859 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1860
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1861 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1862 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1863 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 const char *ptr = b_ptr(buf, msg->next);
1865 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1866 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1867
1868 /* scan current line and stop at LF or CRLF */
1869 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1870 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1871 return 0;
1872
1873 if (*ptr == '\n') {
1874 if (!p1)
1875 p1 = ptr;
1876 p2 = ptr;
1877 break;
1878 }
1879
1880 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1881 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1882 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1883 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1884 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1885 p1 = ptr;
1886 }
1887
1888 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1889 if (ptr >= buf->data + buf->size)
1890 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1891 }
1892
1893 /* after LF; point to beginning of next line */
1894 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1895 if (p2 >= buf->data + buf->size)
1896 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1897
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1899 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1900 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1901
1902 /* schedule this line for forwarding */
1903 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1904 if (msg->sov >= buf->size)
1905 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1906
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1907 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1908 /* LF/CRLF at beginning of line => end of trailers at p2.
1909 * Everything was scheduled for forwarding, there's nothing
1910 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1911 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1912 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1913 msg->msg_state = HTTP_MSG_DONE;
1914 return 1;
1915 }
1916 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1917 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1918 }
1919}
1920
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1921/* 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]1922 * 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]1923 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1924 * 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]1925 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1926 * not enough data are available, the function does not change anything and
1927 * returns zero. If a parse error is encountered, the function returns < 0 and
1928 * does not change anything. Note: this function is designed to parse wrapped
1929 * CRLF at the end of the buffer.
1930 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1931static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1932{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1933 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1934 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1935 int bytes;
1936
1937 /* NB: we'll check data availabilty at the end. It's not a
1938 * problem because whatever we match first will be checked
1939 * against the correct length.
1940 */
1941 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1942 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1943 if (*ptr == '\r') {
1944 bytes++;
1945 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1946 if (ptr >= buf->data + buf->size)
1947 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1948 }
1949
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1950 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951 return 0;
1952
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1953 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1954 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1956 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1957
1958 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1959 if (ptr >= buf->data + buf->size)
1960 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1961 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1962 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1963 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1964 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1965 return 1;
1966}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1967
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1968
1969/*
1970 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1971 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1972int select_compression_request_header(struct session *s, struct buffer *req)
1973{
1974 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1975 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1976 struct hdr_ctx ctx;
1977 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1978 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1979
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1980 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1981 * 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]1982 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1983 */
1984 ctx.idx = 0;
1985 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1986 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1987 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
1988 (ctx.vlen < 31 ||
1989 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
1990 ctx.line[ctx.val + 30] < '6' ||
1991 (ctx.line[ctx.val + 30] == '6' &&
1992 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
1993 s->comp_algo = NULL;
1994 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1995 }
1996
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1997 ctx.idx = 0;
1998 /* no compression when Cache-Control: no-transform found */
1999 while (http_find_header2("Cache-Control", 13, req->p, &txn->hdr_idx, &ctx)) {
2000 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12)) {
2001 s->comp_algo = NULL;
2002 return 0;
2003 }
2004 }
2005
2006 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2007 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]2008 ctx.idx = 0;
2009 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2010 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2011 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2012 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2013
2014 /* remove all occurrences of the header when "compression offload" is set */
2015
2016 if ((s->be->comp && s->be->comp->offload) ||
2017 (s->fe->comp && s->fe->comp->offload)) {
2018 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2019 ctx.idx = 0;
2020 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2021 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2022 }
2023 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2024 return 1;
2025 }
2026 }
2027 }
2028 }
2029
2030 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2031 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2032 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2033 if (comp_algo->add_data == identity_add_data) {
2034 s->comp_algo = comp_algo;
2035 return 1;
2036 }
2037 }
2038 }
2039
2040 s->comp_algo = NULL;
2041
2042 return 0;
2043}
2044
2045/*
2046 * Selects a comression algorithm depending of the server response.
2047 */
2048int select_compression_response_header(struct session *s, struct buffer *res)
2049{
2050 struct http_txn *txn = &s->txn;
2051 struct http_msg *msg = &txn->rsp;
2052 struct hdr_ctx ctx;
2053 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2054
2055 /* no common compression algorithm was found in request header */
2056 if (s->comp_algo == NULL)
2057 goto fail;
2058
2059 /* HTTP < 1.1 should not be compressed */
2060 if (!(msg->flags & HTTP_MSGF_VER_11))
2061 goto fail;
2062
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2063 /* 200 only */
2064 if (txn->status != 200)
2065 goto fail;
2066
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2067 /* Content-Length is null */
2068 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2069 goto fail;
2070
2071 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2072 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2073 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2074 goto fail;
2075
2076 comp_type = NULL;
2077
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2078 /* we don't want to compress multipart content-types, nor content-types that are
2079 * not listed in the "compression type" directive if any. If no content-type was
2080 * found but configuration requires one, we don't compress either. Backend has
2081 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2082 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2083 ctx.idx = 0;
2084 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2085 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2086 goto fail;
2087
2088 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2089 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2090 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2091 if (ctx.vlen >= comp_type->name_len &&
2092 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2093 /* this Content-Type should be compressed */
2094 break;
2095 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2096 /* this Content-Type should not be compressed */
2097 if (comp_type == NULL)
2098 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2099 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2100 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2101 else { /* no content-type header */
2102 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2103 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2104 }
2105
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2106 /* limit compression rate */
2107 if (global.comp_rate_lim > 0)
2108 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2109 goto fail;
2110
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2111 /* limit cpu usage */
2112 if (idle_pct < compress_min_idle)
2113 goto fail;
2114
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2115 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2116 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2117 goto fail;
2118
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2119 s->flags |= SN_COMP_READY;
2120
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2121 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2122 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2123 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2124 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2125
2126 /* add Transfer-Encoding header */
2127 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2128 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2129
2130 /*
2131 * Add Content-Encoding header when it's not identity encoding.
2132 * RFC 2616 : Identity encoding: This content-coding is used only in the
2133 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2134 * header.
2135 */
2136 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2137 trash.len = 18;
2138 memcpy(trash.str, "Content-Encoding: ", trash.len);
2139 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2140 trash.len += s->comp_algo->name_len;
2141 trash.str[trash.len] = '\0';
2142 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2143 }
2144
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2145 return 1;
2146
2147fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2148 if (s->flags & SN_COMP_READY)
William Lallemand1c2d6222012-10-30 15:52:53 +0100[diff] [blame]2149 s->comp_algo->end(&s->comp_ctx);
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2150 s->comp_algo = NULL;
2151 s->flags &= ~SN_COMP_READY;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2152 return 0;
2153}
2154
2155
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2156/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2157 * processing can continue on next analysers, or zero if it either needs more
2158 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2159 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2160 * when it has nothing left to do, and may remove any analyser when it wants to
2161 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2162 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2163int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2164{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2165 /*
2166 * We will parse the partial (or complete) lines.
2167 * We will check the request syntax, and also join multi-line
2168 * headers. An index of all the lines will be elaborated while
2169 * parsing.
2170 *
2171 * For the parsing, we use a 28 states FSM.
2172 *
2173 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2174 * req->buf->p = beginning of request
2175 * req->buf->p + msg->eoh = end of processed headers / start of current one
2176 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2177 * msg->eol = end of current header or line (LF or CRLF)
2178 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2179 *
2180 * At end of parsing, we may perform a capture of the error (if any), and
2181 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2182 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2183 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2184 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2185
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2186 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2187 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2188 struct http_txn *txn = &s->txn;
2189 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2190 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2191
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2192 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]2193 now_ms, __FUNCTION__,
2194 s,
2195 req,
2196 req->rex, req->wex,
2197 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2198 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2199 req->analysers);
2200
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2201 /* we're speaking HTTP here, so let's speak HTTP to the client */
2202 s->srv_error = http_return_srv_error;
2203
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2204 /* There's a protected area at the end of the buffer for rewriting
2205 * purposes. We don't want to start to parse the request if the
2206 * protected area is affected, because we may have to move processed
2207 * data later, which is much more complicated.
2208 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2209 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2210 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2211 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2212 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2213 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2214 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2215 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2216 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2217 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2218 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2219 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2220 return 0;
2221 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2222 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2223 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2224 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2225 }
2226
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2227 /* Note that we have the same problem with the response ; we
2228 * may want to send a redirect, error or anything which requires
2229 * some spare space. So we'll ensure that we have at least
2230 * maxrewrite bytes available in the response buffer before
2231 * processing that one. This will only affect pipelined
2232 * keep-alive requests.
2233 */
2234 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2235 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2236 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2237 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2238 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2239 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]2240 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2241 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2242 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2243 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2244 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2245 return 0;
2246 }
2247 }
2248
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2249 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2250 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2251 }
2252
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2253 /* 1: we might have to print this header in debug mode */
2254 if (unlikely((global.mode & MODE_DEBUG) &&
2255 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2256 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2257 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2258
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2259 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2260 /* this is a bit complex : in case of error on the request line,
2261 * we know that rq.l is still zero, so we display only the part
2262 * up to the end of the line (truncated by debug_hdr).
2263 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2264 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2266
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 sol += hdr_idx_first_pos(&txn->hdr_idx);
2268 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2269
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2270 while (cur_idx) {
2271 eol = sol + txn->hdr_idx.v[cur_idx].len;
2272 debug_hdr("clihdr", s, sol, eol);
2273 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2274 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2275 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2276 }
2277
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2278
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2279 /*
2280 * Now we quickly check if we have found a full valid request.
2281 * If not so, we check the FD and buffer states before leaving.
2282 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2283 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2284 * requests are checked first. When waiting for a second request
2285 * on a keep-alive session, if we encounter and error, close, t/o,
2286 * we note the error in the session flags but don't set any state.
2287 * Since the error will be noted there, it will not be counted by
2288 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2289 * Last, we may increase some tracked counters' http request errors on
2290 * the cases that are deliberately the client's fault. For instance,
2291 * a timeout or connection reset is not counted as an error. However
2292 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2293 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2294
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2295 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2296 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2297 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2298 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2299 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2300 session_inc_http_req_ctr(s);
2301 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2302 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2303 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2304 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2305
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2306 /* 1: Since we are in header mode, if there's no space
2307 * left for headers, we won't be able to free more
2308 * later, so the session will never terminate. We
2309 * must terminate it now.
2310 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2311 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2312 /* FIXME: check if URI is set and return Status
2313 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2314 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2315 session_inc_http_req_ctr(s);
2316 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2317 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2318 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2319 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 goto return_bad_req;
2321 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2322
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2323 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2324 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2325 if (!(s->flags & SN_ERR_MASK))
2326 s->flags |= SN_ERR_CLICL;
2327
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2328 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2329 goto failed_keep_alive;
2330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2332 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2333 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]2334 session_inc_http_err_ctr(s);
2335 }
2336
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2337 msg->msg_state = HTTP_MSG_ERROR;
2338 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2339
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2340 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2341 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2342 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2343 if (s->listener->counters)
2344 s->listener->counters->failed_req++;
2345
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2346 if (!(s->flags & SN_FINST_MASK))
2347 s->flags |= SN_FINST_R;
2348 return 0;
2349 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2350
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2351 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2352 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]2353 if (!(s->flags & SN_ERR_MASK))
2354 s->flags |= SN_ERR_CLITO;
2355
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2356 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2357 goto failed_keep_alive;
2358
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2359 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2360 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2361 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]2362 session_inc_http_err_ctr(s);
2363 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2364 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2365 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2366 msg->msg_state = HTTP_MSG_ERROR;
2367 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2368
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2369 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2370 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2371 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2372 if (s->listener->counters)
2373 s->listener->counters->failed_req++;
2374
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2375 if (!(s->flags & SN_FINST_MASK))
2376 s->flags |= SN_FINST_R;
2377 return 0;
2378 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2379
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2380 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2381 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2382 if (!(s->flags & SN_ERR_MASK))
2383 s->flags |= SN_ERR_CLICL;
2384
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2385 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2386 goto failed_keep_alive;
2387
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2388 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2389 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]2390 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2391 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2392 msg->msg_state = HTTP_MSG_ERROR;
2393 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2394
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2395 session_inc_http_err_ctr(s);
2396 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2397 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2398 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2399 if (s->listener->counters)
2400 s->listener->counters->failed_req++;
2401
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2402 if (!(s->flags & SN_FINST_MASK))
2403 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2404 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2405 }
2406
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2407 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2408 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2409 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2410#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2411 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2412 /* We need more data, we have to re-enable quick-ack in case we
2413 * previously disabled it, otherwise we might cause the client
2414 * to delay next data.
2415 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2416 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]2417 }
2418#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2419
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2420 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2421 /* If the client starts to talk, let's fall back to
2422 * request timeout processing.
2423 */
2424 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2425 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2426 }
2427
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2428 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2429 if (!tick_isset(req->analyse_exp)) {
2430 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2431 (txn->flags & TX_WAIT_NEXT_RQ) &&
2432 tick_isset(s->be->timeout.httpka))
2433 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2434 else
2435 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2436 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2437
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2438 /* we're not ready yet */
2439 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2440
2441 failed_keep_alive:
2442 /* Here we process low-level errors for keep-alive requests. In
2443 * short, if the request is not the first one and it experiences
2444 * a timeout, read error or shutdown, we just silently close so
2445 * that the client can try again.
2446 */
2447 txn->status = 0;
2448 msg->msg_state = HTTP_MSG_RQBEFORE;
2449 req->analysers = 0;
2450 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2451 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2452 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2453 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2454 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2455
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2456 /* OK now we have a complete HTTP request with indexed headers. Let's
2457 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2458 * 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]2459 * 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]2460 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2461 * byte after the last LF. msg->sov points to the first byte of data.
2462 * msg->eol cannot be trusted because it may have been left uninitialized
2463 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2464 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2465
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2466 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2467 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2468
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2469 if (txn->flags & TX_WAIT_NEXT_RQ) {
2470 /* kill the pending keep-alive timeout */
2471 txn->flags &= ~TX_WAIT_NEXT_RQ;
2472 req->analyse_exp = TICK_ETERNITY;
2473 }
2474
2475
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2476 /* Maybe we found in invalid header name while we were configured not
2477 * to block on that, so we have to capture it now.
2478 */
2479 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2480 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]2481
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2482 /*
2483 * 1: identify the method
2484 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2485 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2486
2487 /* we can make use of server redirect on GET and HEAD */
2488 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2489 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2490
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2491 /*
2492 * 2: check if the URI matches the monitor_uri.
2493 * We have to do this for every request which gets in, because
2494 * the monitor-uri is defined by the frontend.
2495 */
2496 if (unlikely((s->fe->monitor_uri_len != 0) &&
2497 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2498 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2499 s->fe->monitor_uri,
2500 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2501 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2502 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2503 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2504 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2505
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2506 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2507 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2508
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2509 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2510 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2511 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]2512
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2513 ret = acl_pass(ret);
2514 if (cond->pol == ACL_COND_UNLESS)
2515 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2516
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2517 if (ret) {
2518 /* we fail this request, let's return 503 service unavail */
2519 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2520 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2521 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2522 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2523 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2524
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2525 /* nothing to fail, let's reply normaly */
2526 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2527 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2528 goto return_prx_cond;
2529 }
2530
2531 /*
2532 * 3: Maybe we have to copy the original REQURI for the logs ?
2533 * Note: we cannot log anymore if the request has been
2534 * classified as invalid.
2535 */
2536 if (unlikely(s->logs.logwait & LW_REQ)) {
2537 /* we have a complete HTTP request that we must log */
2538 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2539 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2540
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2541 if (urilen >= REQURI_LEN)
2542 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2543 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2544 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2545
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 if (!(s->logs.logwait &= ~LW_REQ))
2547 s->do_log(s);
2548 } else {
2549 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2550 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2551 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2552
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2553 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2554 s->unique_id = pool_alloc2(pool2_uniqueid);
2555 }
2556
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2557 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2558 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2559 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2560
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2561 /* ... and check if the request is HTTP/1.1 or above */
2562 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2563 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2564 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2565 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2566 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2567
2568 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2569 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]2570
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2571 /* if the frontend has "option http-use-proxy-header", we'll check if
2572 * we have what looks like a proxied connection instead of a connection,
2573 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2574 * Note that this is *not* RFC-compliant, however browsers and proxies
2575 * happen to do that despite being non-standard :-(
2576 * We consider that a request not beginning with either '/' or '*' is
2577 * a proxied connection, which covers both "scheme://location" and
2578 * CONNECT ip:port.
2579 */
2580 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2581 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2582 txn->flags |= TX_USE_PX_CONN;
2583
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2584 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2585 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2586
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2587 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2588 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2589 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2590 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2591
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2592 /* 6: determine the transfer-length.
2593 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2594 * the presence of a message-body in a REQUEST and its transfer length
2595 * must be determined that way (in order of precedence) :
2596 * 1. The presence of a message-body in a request is signaled by the
2597 * inclusion of a Content-Length or Transfer-Encoding header field
2598 * in the request's header fields. When a request message contains
2599 * both a message-body of non-zero length and a method that does
2600 * not define any semantics for that request message-body, then an
2601 * origin server SHOULD either ignore the message-body or respond
2602 * with an appropriate error message (e.g., 413). A proxy or
2603 * gateway, when presented the same request, SHOULD either forward
2604 * the request inbound with the message- body or ignore the
2605 * message-body when determining a response.
2606 *
2607 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2608 * and the "chunked" transfer-coding (Section 6.2) is used, the
2609 * transfer-length is defined by the use of this transfer-coding.
2610 * If a Transfer-Encoding header field is present and the "chunked"
2611 * transfer-coding is not present, the transfer-length is defined
2612 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2613 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2614 * 3. If a Content-Length header field is present, its decimal value in
2615 * OCTETs represents both the entity-length and the transfer-length.
2616 * If a message is received with both a Transfer-Encoding header
2617 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2618 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2619 * 4. By the server closing the connection. (Closing the connection
2620 * cannot be used to indicate the end of a request body, since that
2621 * would leave no possibility for the server to send back a response.)
2622 *
2623 * Whenever a transfer-coding is applied to a message-body, the set of
2624 * transfer-codings MUST include "chunked", unless the message indicates
2625 * it is terminated by closing the connection. When the "chunked"
2626 * transfer-coding is used, it MUST be the last transfer-coding applied
2627 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2628 */
2629
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2630 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2631 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2632 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2633 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2634 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2635 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2636 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2637 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2638 /* bad transfer-encoding (chunked followed by something else) */
2639 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2640 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2641 break;
2642 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2643 }
2644
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2645 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2646 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2647 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2648 signed long long cl;
2649
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2650 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2651 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2652 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2653 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2654
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2655 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2656 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2657 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2658 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2659
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2660 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2661 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2662 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2663 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2664
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2665 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2666 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2667 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2668 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2669
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2670 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2671 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2672 }
2673
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2674 /* bodyless requests have a known length */
2675 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2676 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2677
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2678 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2679 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2680 req->analyse_exp = TICK_ETERNITY;
2681 return 1;
2682
2683 return_bad_req:
2684 /* We centralize bad requests processing here */
2685 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2686 /* we detected a parsing error. We want to archive this request
2687 * in the dedicated proxy area for later troubleshooting.
2688 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2689 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]2690 }
2691
2692 txn->req.msg_state = HTTP_MSG_ERROR;
2693 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2694 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2695
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2696 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2697 if (s->listener->counters)
2698 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2699
2700 return_prx_cond:
2701 if (!(s->flags & SN_ERR_MASK))
2702 s->flags |= SN_ERR_PRXCOND;
2703 if (!(s->flags & SN_FINST_MASK))
2704 s->flags |= SN_FINST_R;
2705
2706 req->analysers = 0;
2707 req->analyse_exp = TICK_ETERNITY;
2708 return 0;
2709}
2710
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2711/* We reached the stats page through a POST request.
2712 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2713 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2714 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2715int 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]2716{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2717 struct proxy *px = NULL;
2718 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2719
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2720 char key[LINESIZE];
2721 int action = ST_ADM_ACTION_NONE;
2722 int reprocess = 0;
2723
2724 int total_servers = 0;
2725 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2726
2727 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2728 char *st_cur_param = NULL;
2729 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2730
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2731 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2732 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2733
2734 cur_param = next_param = end_params;
2735
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2736 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2737 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2738 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2739 return 1;
2740 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2741 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2742 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2743 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2744 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2745 }
2746
2747 *end_params = '\0';
2748
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2749 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2750
2751 /*
2752 * Parse the parameters in reverse order to only store the last value.
2753 * From the html form, the backend and the action are at the end.
2754 */
2755 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2756 char *value;
2757 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2758
2759 cur_param--;
2760 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2761 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2762 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2763 poffset = (cur_param != first_param ? 1 : 0);
2764 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2765 if ((plen > 0) && (plen <= sizeof(key))) {
2766 strncpy(key, cur_param + poffset, plen);
2767 key[plen - 1] = '\0';
2768 } else {
2769 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2770 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2771 }
2772
2773 /* Parse the value */
2774 value = key;
2775 while (*value != '\0' && *value != '=') {
2776 value++;
2777 }
2778 if (*value == '=') {
2779 /* Ok, a value is found, we can mark the end of the key */
2780 *value++ = '\0';
2781 }
2782
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2783 if (!url_decode(key) || !url_decode(value))
2784 break;
2785
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2786 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2787 if (!px && (strcmp(key, "b") == 0)) {
2788 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2789 /* the backend name is unknown or ambiguous (duplicate names) */
2790 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2791 goto out;
2792 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2793 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2794 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2795 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2796 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2797 }
2798 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2799 action = ST_ADM_ACTION_ENABLE;
2800 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2801 else if (strcmp(value, "stop") == 0) {
2802 action = ST_ADM_ACTION_STOP;
2803 }
2804 else if (strcmp(value, "start") == 0) {
2805 action = ST_ADM_ACTION_START;
2806 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2807 else if (strcmp(value, "shutdown") == 0) {
2808 action = ST_ADM_ACTION_SHUTDOWN;
2809 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2810 else {
2811 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2812 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2813 }
2814 }
2815 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2816 if (!(px && action)) {
2817 /*
2818 * Indicates that we'll need to reprocess the parameters
2819 * as soon as backend and action are known
2820 */
2821 if (!reprocess) {
2822 st_cur_param = cur_param;
2823 st_next_param = next_param;
2824 }
2825 reprocess = 1;
2826 }
2827 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2828 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2829 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2830 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2831 /* Not already in maintenance, we can change the server state */
2832 sv->state |= SRV_MAINTAIN;
2833 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2834 altered_servers++;
2835 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2836 }
2837 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2838 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2839 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2840 /* Already in maintenance, we can change the server state */
2841 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2842 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2843 altered_servers++;
2844 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2845 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2846 break;
2847 case ST_ADM_ACTION_STOP:
2848 case ST_ADM_ACTION_START:
2849 if (action == ST_ADM_ACTION_START)
2850 sv->uweight = sv->iweight;
2851 else
2852 sv->uweight = 0;
2853
2854 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2855 /* we must take care of not pushing the server to full throttle during slow starts */
2856 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2857 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2858 else
2859 sv->eweight = BE_WEIGHT_SCALE;
2860 sv->eweight *= sv->uweight;
2861 } else {
2862 sv->eweight = sv->uweight;
2863 }
2864
2865 /* static LB algorithms are a bit harder to update */
2866 if (px->lbprm.update_server_eweight)
2867 px->lbprm.update_server_eweight(sv);
2868 else if (sv->eweight) {
2869 if (px->lbprm.set_server_status_up)
2870 px->lbprm.set_server_status_up(sv);
2871 }
2872 else {
2873 if (px->lbprm.set_server_status_down)
2874 px->lbprm.set_server_status_down(sv);
2875 }
2876 altered_servers++;
2877 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2878 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2879 case ST_ADM_ACTION_SHUTDOWN:
2880 if (px->state != PR_STSTOPPED) {
2881 struct session *sess, *sess_bck;
2882
2883 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2884 if (sess->srv_conn == sv)
2885 session_shutdown(sess, SN_ERR_KILLED);
2886
2887 altered_servers++;
2888 total_servers++;
2889 }
2890 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2891 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2892 } else {
2893 /* the server name is unknown or ambiguous (duplicate names) */
2894 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2895 }
2896 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2897 if (reprocess && px && action) {
2898 /* Now, we know the backend and the action chosen by the user.
2899 * We can safely restart from the first server parameter
2900 * to reprocess them
2901 */
2902 cur_param = st_cur_param;
2903 next_param = st_next_param;
2904 reprocess = 0;
2905 goto reprocess_servers;
2906 }
2907
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2908 next_param = cur_param;
2909 }
2910 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2911
2912 if (total_servers == 0) {
2913 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2914 }
2915 else if (altered_servers == 0) {
2916 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2917 }
2918 else if (altered_servers == total_servers) {
2919 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2920 }
2921 else {
2922 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2923 }
2924 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2925 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2926}
2927
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2928/* returns a pointer to the first rule which forbids access (deny or http_auth),
2929 * or NULL if everything's OK.
2930 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2931static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2932http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2933{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2934 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2935
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2936 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2937 int ret = 1;
2938
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2939 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2940 continue;
2941
2942 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2943 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2944 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]2945 ret = acl_pass(ret);
2946
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2947 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2948 ret = !ret;
2949 }
2950
2951 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2952 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2953 return NULL; /* no problem */
2954 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2955 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2956 }
2957 }
2958 return NULL;
2959}
2960
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2961/* This stream analyser runs all HTTP request processing which is common to
2962 * frontends and backends, which means blocking ACLs, filters, connection-close,
2963 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2964 * 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]2965 * either needs more data or wants to immediately abort the request (eg: deny,
2966 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2967 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2968int 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]2969{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2970 struct http_txn *txn = &s->txn;
2971 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2972 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2973 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2974 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2975 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2976 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2977
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2978 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2979 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2980 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2981 return 0;
2982 }
2983
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2984 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2985 req->analyse_exp = TICK_ETERNITY;
2986
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2987 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]2988 now_ms, __FUNCTION__,
2989 s,
2990 req,
2991 req->rex, req->wex,
2992 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2993 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2994 req->analysers);
2995
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2996 /* first check whether we have some ACLs set to block this request */
2997 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2998 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]2999
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3000 ret = acl_pass(ret);
3001 if (cond->pol == ACL_COND_UNLESS)
3002 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3003
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3004 if (ret) {
3005 txn->status = 403;
3006 /* let's log the request time */
3007 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3008 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3009 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3010 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3011 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3012 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3013
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3014 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3015 http_req_last_rule = http_check_access_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3016
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3017 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3018 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3019 do_stats = stats_check_uri(s->rep->prod, txn, px);
3020 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3021 http_req_last_rule = http_check_access_rule(px, &px->uri_auth->http_req_rules, s, txn);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3022 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3023 else
3024 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3025
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3026 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3027 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_DENY) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3028 txn->status = 403;
3029 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3030 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3031 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3032 s->fe->fe_counters.denied_req++;
3033 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3034 s->be->be_counters.denied_req++;
3035 if (s->listener->counters)
3036 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3037 goto return_prx_cond;
3038 }
3039
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3040 /* try headers filters */
3041 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3042 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3043 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3044
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3045 /* has the request been denied ? */
3046 if (txn->flags & TX_CLDENY) {
3047 /* no need to go further */
3048 txn->status = 403;
3049 /* let's log the request time */
3050 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3051 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3052 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3053 goto return_prx_cond;
3054 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3055
3056 /* When a connection is tarpitted, we use the tarpit timeout,
3057 * which may be the same as the connect timeout if unspecified.
3058 * If unset, then set it to zero because we really want it to
3059 * eventually expire. We build the tarpit as an analyser.
3060 */
3061 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3062 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3063 /* wipe the request out so that we can drop the connection early
3064 * if the client closes first.
3065 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3066 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3067 req->analysers = 0; /* remove switching rules etc... */
3068 req->analysers |= AN_REQ_HTTP_TARPIT;
3069 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3070 if (!req->analyse_exp)
3071 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3072 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3073 return 1;
3074 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3075 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3076
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3077 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3078 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3079 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3080 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3081 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3082 * avoid to redo the same work if FE and BE have the same settings (common).
3083 * The method consists in checking if options changed between the two calls
3084 * (implying that either one is non-null, or one of them is non-null and we
3085 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3086 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3087
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3088 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3089 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3090 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3091 (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]3092 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3093
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3094 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3095 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3096 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3097 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3098 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3099 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3100 tmp = TX_CON_WANT_CLO;
3101
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3102 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3103 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3104
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3105 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3106 /* parse the Connection header and possibly clean it */
3107 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3108 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3109 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3110 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3111 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3112 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3113 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3114 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3115 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3116
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3117 /* check if client or config asks for explicit close in KAL/SCL */
3118 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3119 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3120 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3121 (!(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]3122 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3123 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3124 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3125 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3126 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3127
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3128 /* we can be blocked here because the request needs to be authenticated,
3129 * either to pass or to access stats.
3130 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3131 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_HTTP_AUTH) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3132 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3133
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3134 if (!realm)
3135 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3136
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3137 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]3138 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3139 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3140 /* on 401 we still count one error, because normal browsing
3141 * won't significantly increase the counter but brute force
3142 * attempts will.
3143 */
3144 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3145 goto return_prx_cond;
3146 }
3147
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3148 /* add request headers from the rule sets in the same order */
3149 list_for_each_entry(wl, &px->req_add, list) {
3150 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3151 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]3152 ret = acl_pass(ret);
3153 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3154 ret = !ret;
3155 if (!ret)
3156 continue;
3157 }
3158
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3159 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3160 goto return_bad_req;
3161 }
3162
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3163 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3164 struct stats_admin_rule *stats_admin_rule;
3165
3166 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3167 * FIXME!!! that one is rather dangerous, we want to
3168 * make it follow standard rules (eg: clear req->analysers).
3169 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3170
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3171 /* now check whether we have some admin rules for this request */
3172 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3173 int ret = 1;
3174
3175 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3176 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3177 ret = acl_pass(ret);
3178 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3179 ret = !ret;
3180 }
3181
3182 if (ret) {
3183 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3184 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3185 break;
3186 }
3187 }
3188
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3189 /* Was the status page requested with a POST ? */
3190 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3191 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3192 if (msg->msg_state < HTTP_MSG_100_SENT) {
3193 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3194 * send an HTTP/1.1 100 Continue intermediate response.
3195 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3196 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3197 struct hdr_ctx ctx;
3198 ctx.idx = 0;
3199 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3200 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3201 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3202 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3203 }
3204 }
3205 msg->msg_state = HTTP_MSG_100_SENT;
3206 s->logs.tv_request = now; /* update the request timer to reflect full request */
3207 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3208 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3209 /* we need more data */
3210 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3211 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3212 return 0;
3213 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3214 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3215 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3216 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3217 }
3218
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3219 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3220 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3221 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]3222 s->target = s->rep->prod->conn->target; // for logging only
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3223 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3224 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3225 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3226 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3227 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3228
3229 return 0;
3230
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3231 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3232
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3233 /* check whether we have some ACLs set to redirect this request */
3234 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3235 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3236
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3237 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3238 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]3239 ret = acl_pass(ret);
3240 if (rule->cond->pol == ACL_COND_UNLESS)
3241 ret = !ret;
3242 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3243
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3244 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3245 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3246
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3247 /* build redirect message */
3248 switch(rule->code) {
3249 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3250 msg_fmt = HTTP_303;
3251 break;
3252 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3253 msg_fmt = HTTP_301;
3254 break;
3255 case 302:
3256 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3257 msg_fmt = HTTP_302;
3258 break;
3259 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3260
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3261 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3262 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3263
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3264 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3265 case REDIRECT_TYPE_SCHEME: {
3266 const char *path;
3267 const char *host;
3268 struct hdr_ctx ctx;
3269 int pathlen;
3270 int hostlen;
3271
3272 host = "";
3273 hostlen = 0;
3274 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3275 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3276 host = ctx.line + ctx.val;
3277 hostlen = ctx.vlen;
3278 }
3279
3280 path = http_get_path(txn);
3281 /* build message using path */
3282 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3283 pathlen = txn->req.sl.rq.u_l + (req->buf->p + txn->req.sl.rq.u) - path;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3284 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3285 int qs = 0;
3286 while (qs < pathlen) {
3287 if (path[qs] == '?') {
3288 pathlen = qs;
3289 break;
3290 }
3291 qs++;
3292 }
3293 }
3294 } else {
3295 path = "/";
3296 pathlen = 1;
3297 }
3298
3299 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3300 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3301 goto return_bad_req;
3302
3303 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3304 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3305 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3306
3307 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3308 memcpy(trash.str + trash.len, "://", 3);
3309 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3310
3311 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3312 memcpy(trash.str + trash.len, host, hostlen);
3313 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3314
3315 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3316 memcpy(trash.str + trash.len, path, pathlen);
3317 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3318
3319 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3320 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3321 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3322 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3323 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3324 trash.str[trash.len] = '/';
3325 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3326 }
3327
3328 break;
3329 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3330 case REDIRECT_TYPE_PREFIX: {
3331 const char *path;
3332 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3333
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3334 path = http_get_path(txn);
3335 /* build message using path */
3336 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3337 pathlen = txn->req.sl.rq.u_l + (req->buf->p + txn->req.sl.rq.u) - path;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3338 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3339 int qs = 0;
3340 while (qs < pathlen) {
3341 if (path[qs] == '?') {
3342 pathlen = qs;
3343 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3344 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3345 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3346 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3347 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3348 } else {
3349 path = "/";
3350 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3351 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3352
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3353 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3354 goto return_bad_req;
3355
3356 /* add prefix. Note that if prefix == "/", we don't want to
3357 * add anything, otherwise it makes it hard for the user to
3358 * configure a self-redirection.
3359 */
3360 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3361 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3362 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3363 }
3364
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3365 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3366 memcpy(trash.str + trash.len, path, pathlen);
3367 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3368
3369 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3370 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3371 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3372 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3373 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3374 trash.str[trash.len] = '/';
3375 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3376 }
3377
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3378 break;
3379 }
3380 case REDIRECT_TYPE_LOCATION:
3381 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3382 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3383 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3384
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3385 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3386 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3387 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3388 break;
3389 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3390
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3391 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3392 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3393 trash.len += 14;
3394 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3395 trash.len += rule->cookie_len;
3396 memcpy(trash.str + trash.len, "\r\n", 2);
3397 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3398 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3399
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3400 /* add end of headers and the keep-alive/close status.
3401 * We may choose to set keep-alive if the Location begins
3402 * with a slash, because the client will come back to the
3403 * same server.
3404 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3405 txn->status = rule->code;
3406 /* let's log the request time */
3407 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3408
3409 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3410 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3411 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3412 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3413 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3414 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3415 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3416 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3417 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3418 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3419 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3420 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3421 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3422 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3423 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3424 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3425 trash.len += 4;
3426 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3427 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3428 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3429 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3430 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3431 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3432 txn->req.msg_state = HTTP_MSG_CLOSED;
3433 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3434 break;
3435 } else {
3436 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3437 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3438 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3439 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3440 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3441 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3442 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3443 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3444 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3445 goto return_prx_cond;
3446 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3447 }
3448 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3449
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3450 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3451 * If this happens, then the data will not come immediately, so we must
3452 * send all what we have without waiting. Note that due to the small gain
3453 * 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]3454 * 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]3455 * itself once used.
3456 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3457 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3458
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3459 /* that's OK for us now, let's move on to next analysers */
3460 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3461
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3462 return_bad_req:
3463 /* We centralize bad requests processing here */
3464 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3465 /* we detected a parsing error. We want to archive this request
3466 * in the dedicated proxy area for later troubleshooting.
3467 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3468 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]3469 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3470
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3471 txn->req.msg_state = HTTP_MSG_ERROR;
3472 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3473 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3474
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3475 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3476 if (s->listener->counters)
3477 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3478
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3479 return_prx_cond:
3480 if (!(s->flags & SN_ERR_MASK))
3481 s->flags |= SN_ERR_PRXCOND;
3482 if (!(s->flags & SN_FINST_MASK))
3483 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3484
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3485 req->analysers = 0;
3486 req->analyse_exp = TICK_ETERNITY;
3487 return 0;
3488}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3489
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3490/* This function performs all the processing enabled for the current request.
3491 * It returns 1 if the processing can continue on next analysers, or zero if it
3492 * needs more data, encounters an error, or wants to immediately abort the
3493 * request. It relies on buffers flags, and updates s->req->analysers.
3494 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3495int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3496{
3497 struct http_txn *txn = &s->txn;
3498 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3499
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3500 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3501 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3502 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3503 return 0;
3504 }
3505
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3506 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]3507 now_ms, __FUNCTION__,
3508 s,
3509 req,
3510 req->rex, req->wex,
3511 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3512 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3513 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3514
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3515 if (s->fe->comp || s->be->comp)
3516 select_compression_request_header(s, req->buf);
3517
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3518 /*
3519 * Right now, we know that we have processed the entire headers
3520 * and that unwanted requests have been filtered out. We can do
3521 * whatever we want with the remaining request. Also, now we
3522 * may have separate values for ->fe, ->be.
3523 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3524
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3525 /*
3526 * If HTTP PROXY is set we simply get remote server address
3527 * parsing incoming request.
3528 */
3529 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3530 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]3531 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3532
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3533 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3534 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3535 * Note that doing so might move headers in the request, but
3536 * the fields will stay coherent and the URI will not move.
3537 * This should only be performed in the backend.
3538 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3539 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3540 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3541 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3542
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3543 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3544 * 8: the appsession cookie was looked up very early in 1.2,
3545 * so let's do the same now.
3546 */
3547
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3548 /* It needs to look into the URI unless persistence must be ignored */
3549 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3550 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]3551 }
3552
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3553 /* add unique-id if "header-unique-id" is specified */
3554
3555 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3556 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3557
3558 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3559 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3560 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3561 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3562 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]3563 goto return_bad_req;
3564 }
3565
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3566 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3567 * 9: add X-Forwarded-For if either the frontend or the backend
3568 * asks for it.
3569 */
3570 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3571 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3572 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3573 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3574 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]3575 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3576 /* The header is set to be added only if none is present
3577 * and we found it, so don't do anything.
3578 */
3579 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3580 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3581 /* Add an X-Forwarded-For header unless the source IP is
3582 * in the 'except' network range.
3583 */
3584 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3585 (((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]3586 != s->fe->except_net.s_addr) &&
3587 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3588 (((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]3589 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3590 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3591 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3592 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3593
3594 /* Note: we rely on the backend to get the header name to be used for
3595 * x-forwarded-for, because the header is really meant for the backends.
3596 * However, if the backend did not specify any option, we have to rely
3597 * on the frontend's header name.
3598 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3599 if (s->be->fwdfor_hdr_len) {
3600 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3601 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3602 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3603 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3604 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3605 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3606 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]3607
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3608 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]3609 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3610 }
3611 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3612 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3613 /* FIXME: for the sake of completeness, we should also support
3614 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3615 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3616 int len;
3617 char pn[INET6_ADDRSTRLEN];
3618 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3619 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3620 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3621
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3622 /* Note: we rely on the backend to get the header name to be used for
3623 * x-forwarded-for, because the header is really meant for the backends.
3624 * However, if the backend did not specify any option, we have to rely
3625 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3626 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3627 if (s->be->fwdfor_hdr_len) {
3628 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3629 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3630 } else {
3631 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3632 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3633 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3634 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3635
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3636 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]3637 goto return_bad_req;
3638 }
3639 }
3640
3641 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3642 * 10: add X-Original-To if either the frontend or the backend
3643 * asks for it.
3644 */
3645 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3646
3647 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3648 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3649 /* Add an X-Original-To header unless the destination IP is
3650 * in the 'except' network range.
3651 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3652 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3653
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3654 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3655 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3656 (((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]3657 != s->fe->except_to.s_addr) &&
3658 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3659 (((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]3660 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3661 int len;
3662 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3663 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3664
3665 /* Note: we rely on the backend to get the header name to be used for
3666 * x-original-to, because the header is really meant for the backends.
3667 * However, if the backend did not specify any option, we have to rely
3668 * on the frontend's header name.
3669 */
3670 if (s->be->orgto_hdr_len) {
3671 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3672 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3673 } else {
3674 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3675 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3676 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3677 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]3678
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3679 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]3680 goto return_bad_req;
3681 }
3682 }
3683 }
3684
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3685 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3686 * If an "Upgrade" token is found, the header is left untouched in order not to have
3687 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3688 * "Upgrade" is present in the Connection header.
3689 */
3690 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3691 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3692 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3693 unsigned int want_flags = 0;
3694
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3695 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3696 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3697 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3698 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3699 want_flags |= TX_CON_CLO_SET;
3700 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3701 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3702 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3703 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3704 want_flags |= TX_CON_KAL_SET;
3705 }
3706
3707 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3708 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3709 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3710
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3711
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3712 /* If we have no server assigned yet and we're balancing on url_param
3713 * with a POST request, we may be interested in checking the body for
3714 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3715 */
3716 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3717 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3718 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3719 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3720 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3721 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3722 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3723
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3724 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3725 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3726#ifdef TCP_QUICKACK
3727 /* We expect some data from the client. Unless we know for sure
3728 * we already have a full request, we have to re-enable quick-ack
3729 * in case we previously disabled it, otherwise we might cause
3730 * the client to delay further data.
3731 */
3732 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3733 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3734 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3735 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]3736#endif
3737 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3738
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3739 /*************************************************************
3740 * OK, that's finished for the headers. We have done what we *
3741 * could. Let's switch to the DATA state. *
3742 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3743 req->analyse_exp = TICK_ETERNITY;
3744 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3745
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3746 /* if the server closes the connection, we want to immediately react
3747 * and close the socket to save packets and syscalls.
3748 */
3749 req->cons->flags |= SI_FL_NOHALF;
3750
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3751 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3752 /* OK let's go on with the BODY now */
3753 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3754
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3755 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3756 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3757 /* we detected a parsing error. We want to archive this request
3758 * in the dedicated proxy area for later troubleshooting.
3759 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3760 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]3761 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3762
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3763 txn->req.msg_state = HTTP_MSG_ERROR;
3764 txn->status = 400;
3765 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3766 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3767
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3768 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3769 if (s->listener->counters)
3770 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3771
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3772 if (!(s->flags & SN_ERR_MASK))
3773 s->flags |= SN_ERR_PRXCOND;
3774 if (!(s->flags & SN_FINST_MASK))
3775 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3776 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3777}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3778
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3779/* This function is an analyser which processes the HTTP tarpit. It always
3780 * returns zero, at the beginning because it prevents any other processing
3781 * from occurring, and at the end because it terminates the request.
3782 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3783int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3784{
3785 struct http_txn *txn = &s->txn;
3786
3787 /* This connection is being tarpitted. The CLIENT side has
3788 * already set the connect expiration date to the right
3789 * timeout. We just have to check that the client is still
3790 * there and that the timeout has not expired.
3791 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3792 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3793 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3794 !tick_is_expired(req->analyse_exp, now_ms))
3795 return 0;
3796
3797 /* We will set the queue timer to the time spent, just for
3798 * logging purposes. We fake a 500 server error, so that the
3799 * attacker will not suspect his connection has been tarpitted.
3800 * It will not cause trouble to the logs because we can exclude
3801 * the tarpitted connections by filtering on the 'PT' status flags.
3802 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3803 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3804
3805 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3806 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3807 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3808
3809 req->analysers = 0;
3810 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3811
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3812 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3813 if (s->listener->counters)
3814 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3815
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3816 if (!(s->flags & SN_ERR_MASK))
3817 s->flags |= SN_ERR_PRXCOND;
3818 if (!(s->flags & SN_FINST_MASK))
3819 s->flags |= SN_FINST_T;
3820 return 0;
3821}
3822
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3823/* This function is an analyser which processes the HTTP request body. It looks
3824 * for parameters to be used for the load balancing algorithm (url_param). It
3825 * must only be called after the standard HTTP request processing has occurred,
3826 * because it expects the request to be parsed. It returns zero if it needs to
3827 * read more data, or 1 once it has completed its analysis.
3828 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3829int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3830{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3831 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3832 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3833 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3834
3835 /* We have to parse the HTTP request body to find any required data.
3836 * "balance url_param check_post" should have been the only way to get
3837 * into this. We were brought here after HTTP header analysis, so all
3838 * related structures are ready.
3839 */
3840
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3841 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3842 goto missing_data;
3843
3844 if (msg->msg_state < HTTP_MSG_100_SENT) {
3845 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3846 * send an HTTP/1.1 100 Continue intermediate response.
3847 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3848 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3849 struct hdr_ctx ctx;
3850 ctx.idx = 0;
3851 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3852 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3853 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3854 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3855 }
3856 }
3857 msg->msg_state = HTTP_MSG_100_SENT;
3858 }
3859
3860 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3861 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3862 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3863 * is still null. We must save the body in msg->next because it
3864 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3865 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3866 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3867
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3868 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3869 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3870 else
3871 msg->msg_state = HTTP_MSG_DATA;
3872 }
3873
3874 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3875 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3876 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3877 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3878 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3879 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3880
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3881 if (!ret)
3882 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3883 else if (ret < 0) {
3884 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3885 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3886 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3887 }
3888
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3889 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3890 * We have the first data byte is in msg->sov. We're waiting for at
3891 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3892 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3893
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3894 if (msg->body_len < limit)
3895 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3896
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3897 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3898 goto http_end;
3899
3900 missing_data:
3901 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3902 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3903 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3904 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3905 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3906
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3907 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3908 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3909 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3910
3911 if (!(s->flags & SN_ERR_MASK))
3912 s->flags |= SN_ERR_CLITO;
3913 if (!(s->flags & SN_FINST_MASK))
3914 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3915 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3916 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3917
3918 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3919 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]3920 /* Not enough data. We'll re-use the http-request
3921 * timeout here. Ideally, we should set the timeout
3922 * relative to the accept() date. We just set the
3923 * request timeout once at the beginning of the
3924 * request.
3925 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3926 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3927 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3928 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3929 return 0;
3930 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3931
3932 http_end:
3933 /* The situation will not evolve, so let's give up on the analysis. */
3934 s->logs.tv_request = now; /* update the request timer to reflect full request */
3935 req->analysers &= ~an_bit;
3936 req->analyse_exp = TICK_ETERNITY;
3937 return 1;
3938
3939 return_bad_req: /* let's centralize all bad requests */
3940 txn->req.msg_state = HTTP_MSG_ERROR;
3941 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3942 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3943
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3944 if (!(s->flags & SN_ERR_MASK))
3945 s->flags |= SN_ERR_PRXCOND;
3946 if (!(s->flags & SN_FINST_MASK))
3947 s->flags |= SN_FINST_R;
3948
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3949 return_err_msg:
3950 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3951 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3952 if (s->listener->counters)
3953 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3954 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3955}
3956
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3957/* send a server's name with an outgoing request over an established connection.
3958 * Note: this function is designed to be called once the request has been scheduled
3959 * for being forwarded. This is the reason why it rewinds the buffer before
3960 * proceeding.
3961 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3962int 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]3963
3964 struct hdr_ctx ctx;
3965
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3966 char *hdr_name = be->server_id_hdr_name;
3967 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3968 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3969 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3970 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3971
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3972 ctx.idx = 0;
3973
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3974 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3975 if (old_o) {
3976 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3977 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3978 }
3979
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3980 old_i = chn->buf->i;
3981 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]3982 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3983 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3984 }
3985
3986 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3987 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3988 memcpy(hdr_val, hdr_name, hdr_name_len);
3989 hdr_val += hdr_name_len;
3990 *hdr_val++ = ':';
3991 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3992 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
3993 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]3994
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3995 if (old_o) {
3996 /* If this was a forwarded request, we must readjust the amount of
3997 * data to be forwarded in order to take into account the size
3998 * variations.
3999 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4000 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4001 }
4002
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4003 return 0;
4004}
4005
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4006/* Terminate current transaction and prepare a new one. This is very tricky
4007 * right now but it works.
4008 */
4009void http_end_txn_clean_session(struct session *s)
4010{
4011 /* FIXME: We need a more portable way of releasing a backend's and a
4012 * server's connections. We need a safer way to reinitialize buffer
4013 * flags. We also need a more accurate method for computing per-request
4014 * data.
4015 */
4016 http_silent_debug(__LINE__, s);
4017
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4018 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4019 si_shutr(s->req->cons);
4020 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4021
4022 http_silent_debug(__LINE__, s);
4023
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4024 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4025 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4026 if (unlikely(s->srv_conn))
4027 sess_change_server(s, NULL);
4028 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4029
4030 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4031 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4032 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4033
4034 if (s->txn.status) {
4035 int n;
4036
4037 n = s->txn.status / 100;
4038 if (n < 1 || n > 5)
4039 n = 0;
4040
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4041 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4042 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4043 if (s->comp_algo)
4044 s->fe->fe_counters.p.http.comp_rsp++;
4045 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4046 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4047 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4048 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4049 s->be->be_counters.p.http.cum_req++;
4050 if (s->comp_algo)
4051 s->be->be_counters.p.http.comp_rsp++;
4052 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4053 }
4054
4055 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4056 s->logs.bytes_in -= s->req->buf->i;
4057 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4058
4059 /* let's do a final log if we need it */
4060 if (s->logs.logwait &&
4061 !(s->flags & SN_MONITOR) &&
4062 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4063 s->do_log(s);
4064 }
4065
4066 s->logs.accept_date = date; /* user-visible date for logging */
4067 s->logs.tv_accept = now; /* corrected date for internal use */
4068 tv_zero(&s->logs.tv_request);
4069 s->logs.t_queue = -1;
4070 s->logs.t_connect = -1;
4071 s->logs.t_data = -1;
4072 s->logs.t_close = 0;
4073 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4074 s->logs.srv_queue_size = 0; /* we will get this number soon */
4075
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4076 s->logs.bytes_in = s->req->total = s->req->buf->i;
4077 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4078
4079 if (s->pend_pos)
4080 pendconn_free(s->pend_pos);
4081
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4082 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4083 if (s->flags & SN_CURR_SESS) {
4084 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4085 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4086 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4087 if (may_dequeue_tasks(objt_server(s->target), s->be))
4088 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4089 }
4090
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4091 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4092
4093 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4094 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4095 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4096 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4097 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4098 s->req->cons->err_loc = NULL;
4099 s->req->cons->exp = TICK_ETERNITY;
4100 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4101 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4102 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]4103 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]4104 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4105
4106 if (s->flags & SN_COMP_READY)
4107 s->comp_algo->end(&s->comp_ctx);
4108 s->comp_algo = NULL;
4109 s->flags &= ~SN_COMP_READY;
4110
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4111 s->txn.meth = 0;
4112 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4113 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4114 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4115 s->req->cons->flags |= SI_FL_INDEP_STR;
4116
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4117 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4118 s->req->flags |= CF_NEVER_WAIT;
4119 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4120 }
4121
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4122 /* if the request buffer is not empty, it means we're
4123 * about to process another request, so send pending
4124 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4125 * Just don't do this if the buffer is close to be full,
4126 * because the request will wait for it to flush a little
4127 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4128 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4129 if (s->req->buf->i) {
4130 if (s->rep->buf->o &&
4131 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4132 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]4133 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4134 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4135
4136 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4137 channel_auto_read(s->req);
4138 channel_auto_close(s->req);
4139 channel_auto_read(s->rep);
4140 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4141
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4142 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4143 s->rep->analysers = 0;
4144
4145 http_silent_debug(__LINE__, s);
4146}
4147
4148
4149/* This function updates the request state machine according to the response
4150 * state machine and buffer flags. It returns 1 if it changes anything (flag
4151 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4152 * it is only used to find when a request/response couple is complete. Both
4153 * this function and its equivalent should loop until both return zero. It
4154 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4155 */
4156int http_sync_req_state(struct session *s)
4157{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4158 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4159 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4160 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4161 unsigned int old_state = txn->req.msg_state;
4162
4163 http_silent_debug(__LINE__, s);
4164 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4165 return 0;
4166
4167 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4168 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4169 * We can shut the read side unless we want to abort_on_close,
4170 * or we have a POST request. The issue with POST requests is
4171 * that some browsers still send a CRLF after the request, and
4172 * this CRLF must be read so that it does not remain in the kernel
4173 * buffers, otherwise a close could cause an RST on some systems
4174 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4175 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4176 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4177 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4178
4179 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4180 goto wait_other_side;
4181
4182 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4183 /* The server has not finished to respond, so we
4184 * don't want to move in order not to upset it.
4185 */
4186 goto wait_other_side;
4187 }
4188
4189 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4190 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4191 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4192 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4193 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4194 goto wait_other_side;
4195 }
4196
4197 /* When we get here, it means that both the request and the
4198 * response have finished receiving. Depending on the connection
4199 * mode, we'll have to wait for the last bytes to leave in either
4200 * direction, and sometimes for a close to be effective.
4201 */
4202
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4203 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4204 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4205 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4206 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4207 }
4208 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4209 /* Option forceclose is set, or either side wants to close,
4210 * let's enforce it now that we're not expecting any new
4211 * data to come. The caller knows the session is complete
4212 * once both states are CLOSED.
4213 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4214 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4215 channel_shutr_now(chn);
4216 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4217 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4218 }
4219 else {
4220 /* The last possible modes are keep-alive and tunnel. Since tunnel
4221 * mode does not set the body analyser, we can't reach this place
4222 * in tunnel mode, so we're left with keep-alive only.
4223 * This mode is currently not implemented, we switch to tunnel mode.
4224 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4225 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4226 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4227 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4228 }
4229
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4230 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4231 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4232 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4233
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4234 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4235 txn->req.msg_state = HTTP_MSG_CLOSING;
4236 goto http_msg_closing;
4237 }
4238 else {
4239 txn->req.msg_state = HTTP_MSG_CLOSED;
4240 goto http_msg_closed;
4241 }
4242 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4243 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4244 }
4245
4246 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4247 http_msg_closing:
4248 /* nothing else to forward, just waiting for the output buffer
4249 * to be empty and for the shutw_now to take effect.
4250 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4251 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4252 txn->req.msg_state = HTTP_MSG_CLOSED;
4253 goto http_msg_closed;
4254 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4255 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4256 txn->req.msg_state = HTTP_MSG_ERROR;
4257 goto wait_other_side;
4258 }
4259 }
4260
4261 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4262 http_msg_closed:
4263 goto wait_other_side;
4264 }
4265
4266 wait_other_side:
4267 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4268 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4269}
4270
4271
4272/* This function updates the response state machine according to the request
4273 * state machine and buffer flags. It returns 1 if it changes anything (flag
4274 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4275 * it is only used to find when a request/response couple is complete. Both
4276 * this function and its equivalent should loop until both return zero. It
4277 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4278 */
4279int http_sync_res_state(struct session *s)
4280{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4281 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4282 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4283 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4284 unsigned int old_state = txn->rsp.msg_state;
4285
4286 http_silent_debug(__LINE__, s);
4287 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4288 return 0;
4289
4290 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4291 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4292 * still monitor the server connection for a possible close
4293 * while the request is being uploaded, so we don't disable
4294 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4295 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4296 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4297
4298 if (txn->req.msg_state == HTTP_MSG_ERROR)
4299 goto wait_other_side;
4300
4301 if (txn->req.msg_state < HTTP_MSG_DONE) {
4302 /* The client seems to still be sending data, probably
4303 * because we got an error response during an upload.
4304 * We have the choice of either breaking the connection
4305 * or letting it pass through. Let's do the later.
4306 */
4307 goto wait_other_side;
4308 }
4309
4310 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4311 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4312 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4313 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4314 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4315 goto wait_other_side;
4316 }
4317
4318 /* When we get here, it means that both the request and the
4319 * response have finished receiving. Depending on the connection
4320 * mode, we'll have to wait for the last bytes to leave in either
4321 * direction, and sometimes for a close to be effective.
4322 */
4323
4324 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4325 /* Server-close mode : shut read and wait for the request
4326 * side to close its output buffer. The caller will detect
4327 * when we're in DONE and the other is in CLOSED and will
4328 * catch that for the final cleanup.
4329 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4330 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4331 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4332 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4333 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4334 /* Option forceclose is set, or either side wants to close,
4335 * let's enforce it now that we're not expecting any new
4336 * data to come. The caller knows the session is complete
4337 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4338 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4339 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4340 channel_shutr_now(chn);
4341 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4342 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4343 }
4344 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4345 /* The last possible modes are keep-alive and tunnel. Since tunnel
4346 * mode does not set the body analyser, we can't reach this place
4347 * in tunnel mode, so we're left with keep-alive only.
4348 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4349 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4350 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4351 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4352 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4353 }
4354
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4355 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4356 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4357 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4358 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4359 goto http_msg_closing;
4360 }
4361 else {
4362 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4363 goto http_msg_closed;
4364 }
4365 }
4366 goto wait_other_side;
4367 }
4368
4369 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4370 http_msg_closing:
4371 /* nothing else to forward, just waiting for the output buffer
4372 * to be empty and for the shutw_now to take effect.
4373 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4374 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4375 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4376 goto http_msg_closed;
4377 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4378 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4379 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4380 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4381 if (objt_server(s->target))
4382 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4383 goto wait_other_side;
4384 }
4385 }
4386
4387 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4388 http_msg_closed:
4389 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4390 bi_erase(chn);
4391 channel_auto_close(chn);
4392 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4393 goto wait_other_side;
4394 }
4395
4396 wait_other_side:
4397 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4398 /* We force the response to leave immediately if we're waiting for the
4399 * other side, since there is no pending shutdown to push it out.
4400 */
4401 if (!channel_is_empty(chn))
4402 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4403 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4404}
4405
4406
4407/* Resync the request and response state machines. Return 1 if either state
4408 * changes.
4409 */
4410int http_resync_states(struct session *s)
4411{
4412 struct http_txn *txn = &s->txn;
4413 int old_req_state = txn->req.msg_state;
4414 int old_res_state = txn->rsp.msg_state;
4415
4416 http_silent_debug(__LINE__, s);
4417 http_sync_req_state(s);
4418 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4419 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4420 if (!http_sync_res_state(s))
4421 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4422 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4423 if (!http_sync_req_state(s))
4424 break;
4425 }
4426 http_silent_debug(__LINE__, s);
4427 /* OK, both state machines agree on a compatible state.
4428 * There are a few cases we're interested in :
4429 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4430 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4431 * directions, so let's simply disable both analysers.
4432 * - HTTP_MSG_CLOSED on the response only means we must abort the
4433 * request.
4434 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4435 * with server-close mode means we've completed one request and we
4436 * must re-initialize the server connection.
4437 */
4438
4439 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4440 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4441 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4442 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4443 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4444 channel_auto_close(s->req);
4445 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4446 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4447 channel_auto_close(s->rep);
4448 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4449 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4450 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4451 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4452 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4453 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4454 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4455 channel_auto_close(s->rep);
4456 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4457 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4458 channel_abort(s->req);
4459 channel_auto_close(s->req);
4460 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4461 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4462 }
4463 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4464 txn->rsp.msg_state == HTTP_MSG_DONE &&
4465 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4466 /* server-close: terminate this server connection and
4467 * reinitialize a fresh-new transaction.
4468 */
4469 http_end_txn_clean_session(s);
4470 }
4471
4472 http_silent_debug(__LINE__, s);
4473 return txn->req.msg_state != old_req_state ||
4474 txn->rsp.msg_state != old_res_state;
4475}
4476
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4477/* This function is an analyser which forwards request body (including chunk
4478 * sizes if any). It is called as soon as we must forward, even if we forward
4479 * zero byte. The only situation where it must not be called is when we're in
4480 * tunnel mode and we want to forward till the close. It's used both to forward
4481 * remaining data and to resync after end of body. It expects the msg_state to
4482 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4483 * 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]4484 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4485 * bytes of pending data + the headers if not already done (between sol and sov).
4486 * 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]4487 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4488int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4489{
4490 struct http_txn *txn = &s->txn;
4491 struct http_msg *msg = &s->txn.req;
4492
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4493 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4494 return 0;
4495
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4496 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]4497 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4498 /* Output closed while we were sending data. We must abort and
4499 * wake the other side up.
4500 */
4501 msg->msg_state = HTTP_MSG_ERROR;
4502 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4503 return 1;
4504 }
4505
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4506 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4507 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4508
4509 /* Note that we don't have to send 100-continue back because we don't
4510 * need the data to complete our job, and it's up to the server to
4511 * decide whether to return 100, 417 or anything else in return of
4512 * an "Expect: 100-continue" header.
4513 */
4514
4515 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4516 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4517 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4518 * is still null. We must save the body in msg->next because it
4519 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4520 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4521 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4522
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4523 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4524 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4525 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4526 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4527 }
4528
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4529 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4530 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4531
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4532 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4533 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4534 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4535 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4536 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4537 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4538 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4539 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4540 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4541
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4542 if (msg->msg_state == HTTP_MSG_DATA) {
4543 /* must still forward */
4544 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4545 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4546
4547 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4548 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4549 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4550 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4551 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4552 }
4553 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4554 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4555 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4556 * TRAILERS state.
4557 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4558 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4559
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4560 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4561 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4562 else if (ret < 0) {
4563 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4564 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4565 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]4566 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4567 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4568 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4569 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4570 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4571 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4572 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4573
4574 if (ret == 0)
4575 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4576 else if (ret < 0) {
4577 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4578 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4579 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]4580 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4581 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4582 /* we're in MSG_CHUNK_SIZE now */
4583 }
4584 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4585 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4586
4587 if (ret == 0)
4588 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4589 else if (ret < 0) {
4590 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4591 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4592 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]4593 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4594 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4595 /* we're in HTTP_MSG_DONE now */
4596 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4597 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4598 int old_state = msg->msg_state;
4599
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4600 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4601 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4602 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4603 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4604 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4605 if (http_resync_states(s)) {
4606 /* some state changes occurred, maybe the analyser
4607 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4608 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4609 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4610 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4611 /* request errors are most likely due to
4612 * the server aborting the transfer.
4613 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4614 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4615 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4616 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4617 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4618 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4619 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4620 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4621 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4622
4623 /* If "option abortonclose" is set on the backend, we
4624 * want to monitor the client's connection and forward
4625 * any shutdown notification to the server, which will
4626 * decide whether to close or to go on processing the
4627 * request.
4628 */
4629 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4630 channel_auto_read(req);
4631 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4632 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4633 else if (s->txn.meth == HTTP_METH_POST) {
4634 /* POST requests may require to read extra CRLF
4635 * sent by broken browsers and which could cause
4636 * an RST to be sent upon close on some systems
4637 * (eg: Linux).
4638 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4639 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4640 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4641
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4642 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4643 }
4644 }
4645
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4646 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4647 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4648 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4649 if (!(s->flags & SN_ERR_MASK))
4650 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4651 if (!(s->flags & SN_FINST_MASK)) {
4652 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4653 s->flags |= SN_FINST_H;
4654 else
4655 s->flags |= SN_FINST_D;
4656 }
4657
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4658 s->fe->fe_counters.cli_aborts++;
4659 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4660 if (objt_server(s->target))
4661 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4662
4663 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4664 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4665
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4666 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4667 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4668 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4669
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4670 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4671 * 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]4672 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4673 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4674 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4675
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4676 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4677 * 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]4678 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4679 * modes are already handled by the stream sock layer. We must not do
4680 * this in content-length mode because it could present the MSG_MORE
4681 * flag with the last block of forwarded data, which would cause an
4682 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4683 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4684 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4685 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4686
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4687 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4688 return 0;
4689
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4690 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4691 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4692 if (s->listener->counters)
4693 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4694 return_bad_req_stats_ok:
4695 txn->req.msg_state = HTTP_MSG_ERROR;
4696 if (txn->status) {
4697 /* Note: we don't send any error if some data were already sent */
4698 stream_int_retnclose(req->prod, NULL);
4699 } else {
4700 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4701 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4702 }
4703 req->analysers = 0;
4704 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]4705
4706 if (!(s->flags & SN_ERR_MASK))
4707 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4708 if (!(s->flags & SN_FINST_MASK)) {
4709 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4710 s->flags |= SN_FINST_H;
4711 else
4712 s->flags |= SN_FINST_D;
4713 }
4714 return 0;
4715
4716 aborted_xfer:
4717 txn->req.msg_state = HTTP_MSG_ERROR;
4718 if (txn->status) {
4719 /* Note: we don't send any error if some data were already sent */
4720 stream_int_retnclose(req->prod, NULL);
4721 } else {
4722 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4723 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4724 }
4725 req->analysers = 0;
4726 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4727
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4728 s->fe->fe_counters.srv_aborts++;
4729 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4730 if (objt_server(s->target))
4731 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4732
4733 if (!(s->flags & SN_ERR_MASK))
4734 s->flags |= SN_ERR_SRVCL;
4735 if (!(s->flags & SN_FINST_MASK)) {
4736 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4737 s->flags |= SN_FINST_H;
4738 else
4739 s->flags |= SN_FINST_D;
4740 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4741 return 0;
4742}
4743
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4744/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4745 * processing can continue on next analysers, or zero if it either needs more
4746 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4747 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4748 * when it has nothing left to do, and may remove any analyser when it wants to
4749 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4750 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4751int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4752{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4753 struct http_txn *txn = &s->txn;
4754 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4755 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4756 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4757 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4758 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4759
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4760 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]4761 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4762 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4763 rep,
4764 rep->rex, rep->wex,
4765 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4766 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4767 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4768
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4769 /*
4770 * Now parse the partial (or complete) lines.
4771 * We will check the response syntax, and also join multi-line
4772 * headers. An index of all the lines will be elaborated while
4773 * parsing.
4774 *
4775 * For the parsing, we use a 28 states FSM.
4776 *
4777 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4778 * rep->buf->p = beginning of response
4779 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4780 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4781 * msg->eol = end of current header or line (LF or CRLF)
4782 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4783 */
4784
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4785 /* There's a protected area at the end of the buffer for rewriting
4786 * purposes. We don't want to start to parse the request if the
4787 * protected area is affected, because we may have to move processed
4788 * data later, which is much more complicated.
4789 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4790 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4791 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4792 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4793 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4794 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4795 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4796 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4797 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4798 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4799 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4800 return 0;
4801 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4802 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4803 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4804 }
4805
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4806 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4807 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4808 }
4809
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4810 /* 1: we might have to print this header in debug mode */
4811 if (unlikely((global.mode & MODE_DEBUG) &&
4812 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4813 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4814 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4815
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4816 sol = rep->buf->p;
4817 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4818 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4819
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4820 sol += hdr_idx_first_pos(&txn->hdr_idx);
4821 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4822
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4823 while (cur_idx) {
4824 eol = sol + txn->hdr_idx.v[cur_idx].len;
4825 debug_hdr("srvhdr", s, sol, eol);
4826 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4827 cur_idx = txn->hdr_idx.v[cur_idx].next;
4828 }
4829 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4830
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4831 /*
4832 * Now we quickly check if we have found a full valid response.
4833 * If not so, we check the FD and buffer states before leaving.
4834 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4835 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4836 * responses are checked first.
4837 *
4838 * Depending on whether the client is still there or not, we
4839 * may send an error response back or not. Note that normally
4840 * we should only check for HTTP status there, and check I/O
4841 * errors somewhere else.
4842 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4843
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4844 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4845 /* Invalid response */
4846 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4847 /* we detected a parsing error. We want to archive this response
4848 * in the dedicated proxy area for later troubleshooting.
4849 */
4850 hdr_response_bad:
4851 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4852 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]4853
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4854 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4855 if (objt_server(s->target)) {
4856 objt_server(s->target)->counters.failed_resp++;
4857 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4858 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4859 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4860 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4861 rep->analysers = 0;
4862 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4863 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4864 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4865 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4866
4867 if (!(s->flags & SN_ERR_MASK))
4868 s->flags |= SN_ERR_PRXCOND;
4869 if (!(s->flags & SN_FINST_MASK))
4870 s->flags |= SN_FINST_H;
4871
4872 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4873 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4874
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4875 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4876 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4877 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4878 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4879 goto hdr_response_bad;
4880 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4881
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4882 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4883 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4884 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4885 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]4886
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4887 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4888 if (objt_server(s->target)) {
4889 objt_server(s->target)->counters.failed_resp++;
4890 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4891 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4892
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4893 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4894 rep->analysers = 0;
4895 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4896 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4897 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4898 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4899
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4900 if (!(s->flags & SN_ERR_MASK))
4901 s->flags |= SN_ERR_SRVCL;
4902 if (!(s->flags & SN_FINST_MASK))
4903 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4904 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4905 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4906
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4907 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4908 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4909 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4910 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]4911
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4912 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4913 if (objt_server(s->target)) {
4914 objt_server(s->target)->counters.failed_resp++;
4915 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4916 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4917
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4918 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4919 rep->analysers = 0;
4920 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4921 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4922 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4923 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4924
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4925 if (!(s->flags & SN_ERR_MASK))
4926 s->flags |= SN_ERR_SRVTO;
4927 if (!(s->flags & SN_FINST_MASK))
4928 s->flags |= SN_FINST_H;
4929 return 0;
4930 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4931
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]4932 /* client abort with an abortonclose */
4933 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
4934 s->fe->fe_counters.cli_aborts++;
4935 s->be->be_counters.cli_aborts++;
4936 if (objt_server(s->target))
4937 objt_server(s->target)->counters.cli_aborts++;
4938
4939 rep->analysers = 0;
4940 channel_auto_close(rep);
4941
4942 txn->status = 400;
4943 bi_erase(rep);
4944 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
4945
4946 if (!(s->flags & SN_ERR_MASK))
4947 s->flags |= SN_ERR_CLICL;
4948 if (!(s->flags & SN_FINST_MASK))
4949 s->flags |= SN_FINST_H;
4950
4951 /* process_session() will take care of the error */
4952 return 0;
4953 }
4954
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4955 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4956 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4957 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4958 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]4959
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4960 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4961 if (objt_server(s->target)) {
4962 objt_server(s->target)->counters.failed_resp++;
4963 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4964 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4965
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4966 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4967 rep->analysers = 0;
4968 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4969 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4970 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4971 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4972
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4973 if (!(s->flags & SN_ERR_MASK))
4974 s->flags |= SN_ERR_SRVCL;
4975 if (!(s->flags & SN_FINST_MASK))
4976 s->flags |= SN_FINST_H;
4977 return 0;
4978 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4979
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4980 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4981 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4982 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4983 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]4984
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4985 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4986 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4987 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4988
4989 if (!(s->flags & SN_ERR_MASK))
4990 s->flags |= SN_ERR_CLICL;
4991 if (!(s->flags & SN_FINST_MASK))
4992 s->flags |= SN_FINST_H;
4993
4994 /* process_session() will take care of the error */
4995 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4996 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4997
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4998 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4999 return 0;
5000 }
5001
5002 /* More interesting part now : we know that we have a complete
5003 * response which at least looks like HTTP. We have an indicator
5004 * of each header's length, so we can parse them quickly.
5005 */
5006
5007 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5008 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]5009
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5010 /*
5011 * 1: get the status code
5012 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5013 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5014 if (n < 1 || n > 5)
5015 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5016 /* when the client triggers a 4xx from the server, it's most often due
5017 * to a missing object or permission. These events should be tracked
5018 * because if they happen often, it may indicate a brute force or a
5019 * vulnerability scan.
5020 */
5021 if (n == 4)
5022 session_inc_http_err_ctr(s);
5023
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5024 if (objt_server(s->target))
5025 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5026
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5027 /* check if the response is HTTP/1.1 or above */
5028 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5029 ((rep->buf->p[5] > '1') ||
5030 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5031 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5032
5033 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5034 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]5035
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5036 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5037 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5038
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5039 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]5040
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5041 /* Adjust server's health based on status code. Note: status codes 501
5042 * and 505 are triggered on demand by client request, so we must not
5043 * count them as server failures.
5044 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5045 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5046 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5047 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5048 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5049 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5050 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5051
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5052 /*
5053 * 2: check for cacheability.
5054 */
5055
5056 switch (txn->status) {
5057 case 200:
5058 case 203:
5059 case 206:
5060 case 300:
5061 case 301:
5062 case 410:
5063 /* RFC2616 @13.4:
5064 * "A response received with a status code of
5065 * 200, 203, 206, 300, 301 or 410 MAY be stored
5066 * by a cache (...) unless a cache-control
5067 * directive prohibits caching."
5068 *
5069 * RFC2616 @9.5: POST method :
5070 * "Responses to this method are not cacheable,
5071 * unless the response includes appropriate
5072 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5073 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5074 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5075 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5076 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5077 break;
5078 default:
5079 break;
5080 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5081
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5082 /*
5083 * 3: we may need to capture headers
5084 */
5085 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5086 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5087 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5088 txn->rsp.cap, s->fe->rsp_cap);
5089
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5090 /* 4: determine the transfer-length.
5091 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5092 * the presence of a message-body in a RESPONSE and its transfer length
5093 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5094 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5095 * All responses to the HEAD request method MUST NOT include a
5096 * message-body, even though the presence of entity-header fields
5097 * might lead one to believe they do. All 1xx (informational), 204
5098 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5099 * message-body. All other responses do include a message-body,
5100 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5101 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5102 * 1. Any response which "MUST NOT" include a message-body (such as the
5103 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5104 * always terminated by the first empty line after the header fields,
5105 * regardless of the entity-header fields present in the message.
5106 *
5107 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5108 * the "chunked" transfer-coding (Section 6.2) is used, the
5109 * transfer-length is defined by the use of this transfer-coding.
5110 * If a Transfer-Encoding header field is present and the "chunked"
5111 * transfer-coding is not present, the transfer-length is defined by
5112 * the sender closing the connection.
5113 *
5114 * 3. If a Content-Length header field is present, its decimal value in
5115 * OCTETs represents both the entity-length and the transfer-length.
5116 * If a message is received with both a Transfer-Encoding header
5117 * field and a Content-Length header field, the latter MUST be ignored.
5118 *
5119 * 4. If the message uses the media type "multipart/byteranges", and
5120 * the transfer-length is not otherwise specified, then this self-
5121 * delimiting media type defines the transfer-length. This media
5122 * type MUST NOT be used unless the sender knows that the recipient
5123 * can parse it; the presence in a request of a Range header with
5124 * multiple byte-range specifiers from a 1.1 client implies that the
5125 * client can parse multipart/byteranges responses.
5126 *
5127 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5128 */
5129
5130 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5131 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5132 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5133 * FIXME: should we parse anyway and return an error on chunked encoding ?
5134 */
5135 if (txn->meth == HTTP_METH_HEAD ||
5136 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5137 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5138 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5139 goto skip_content_length;
5140 }
5141
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5142 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5143 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5144 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5145 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5146 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5147 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5148 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5149 /* bad transfer-encoding (chunked followed by something else) */
5150 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5151 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5152 break;
5153 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5154 }
5155
5156 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5157 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5158 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5159 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5160 signed long long cl;
5161
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5162 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5163 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5164 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5165 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5166
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5167 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5168 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5169 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5170 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5171
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5172 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5173 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5174 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5175 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5176
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5177 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5178 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5179 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5180 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5181
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5182 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5183 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5184 }
5185
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5186 if (s->fe->comp || s->be->comp)
5187 select_compression_response_header(s, rep->buf);
5188
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5189 /* FIXME: we should also implement the multipart/byterange method.
5190 * For now on, we resort to close mode in this case (unknown length).
5191 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5192skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5193
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5194 /* end of job, return OK */
5195 rep->analysers &= ~an_bit;
5196 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5197 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5198 return 1;
5199}
5200
5201/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5202 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5203 * and updates t->rep->analysers. It might make sense to explode it into several
5204 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5205 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5206int 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]5207{
5208 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5209 struct http_msg *msg = &txn->rsp;
5210 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5211 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5212
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5213 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]5214 now_ms, __FUNCTION__,
5215 t,
5216 rep,
5217 rep->rex, rep->wex,
5218 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5219 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5220 rep->analysers);
5221
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5222 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5223 return 0;
5224
5225 rep->analysers &= ~an_bit;
5226 rep->analyse_exp = TICK_ETERNITY;
5227
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5228 /* Now we have to check if we need to modify the Connection header.
5229 * This is more difficult on the response than it is on the request,
5230 * because we can have two different HTTP versions and we don't know
5231 * how the client will interprete a response. For instance, let's say
5232 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5233 * HTTP/1.1 response without any header. Maybe it will bound itself to
5234 * HTTP/1.0 because it only knows about it, and will consider the lack
5235 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5236 * the lack of header as a keep-alive. Thus we will use two flags
5237 * indicating how a request MAY be understood by the client. In case
5238 * of multiple possibilities, we'll fix the header to be explicit. If
5239 * ambiguous cases such as both close and keepalive are seen, then we
5240 * will fall back to explicit close. Note that we won't take risks with
5241 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5242 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5243 */
5244
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5245 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5246 txn->status == 101)) {
5247 /* Either we've established an explicit tunnel, or we're
5248 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5249 * to understand the next protocols. We have to switch to tunnel
5250 * mode, so that we transfer the request and responses then let
5251 * this protocol pass unmodified. When we later implement specific
5252 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5253 * header which contains information about that protocol for
5254 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5255 */
5256 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5257 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5258 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5259 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5260 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5261 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5262
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5263 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5264 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5265 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5266 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5267
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5268 /* now adjust header transformations depending on current state */
5269 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5270 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5271 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5272 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5273 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5274 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5275 else { /* SCL / KAL */
5276 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5277 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5278 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5279 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5280
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5281 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5282 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5283
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5284 /* Some keep-alive responses are converted to Server-close if
5285 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5286 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5287 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5288 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5289 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5290 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5291 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5292 }
5293
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5294 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5295 /*
5296 * 3: we will have to evaluate the filters.
5297 * As opposed to version 1.2, now they will be evaluated in the
5298 * filters order and not in the header order. This means that
5299 * each filter has to be validated among all headers.
5300 *
5301 * Filters are tried with ->be first, then with ->fe if it is
5302 * different from ->be.
5303 */
5304
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5305 cur_proxy = t->be;
5306 while (1) {
5307 struct proxy *rule_set = cur_proxy;
5308
5309 /* try headers filters */
5310 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5311 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5312 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5313 if (objt_server(t->target)) {
5314 objt_server(t->target)->counters.failed_resp++;
5315 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5316 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5317 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5318 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5319 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5320 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5321 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5322 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5323 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5324 if (!(t->flags & SN_ERR_MASK))
5325 t->flags |= SN_ERR_PRXCOND;
5326 if (!(t->flags & SN_FINST_MASK))
5327 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5328 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5329 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5330 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5331
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5332 /* has the response been denied ? */
5333 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5334 if (objt_server(t->target))
5335 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5336
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5337 t->be->be_counters.denied_resp++;
5338 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5339 if (t->listener->counters)
5340 t->listener->counters->denied_resp++;
5341
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5342 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5343 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5344
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5345 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5346 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5347 if (txn->status < 200)
5348 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5349 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5350 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]5351 ret = acl_pass(ret);
5352 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5353 ret = !ret;
5354 if (!ret)
5355 continue;
5356 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5357 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5358 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5359 }
5360
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5361 /* check whether we're already working on the frontend */
5362 if (cur_proxy == t->fe)
5363 break;
5364 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5365 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5366
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5367 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5368 * We may be facing a 100-continue response, in which case this
5369 * is not the right response, and we're waiting for the next one.
5370 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5371 * next one.
5372 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5373 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5374 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5375 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5376 msg->msg_state = HTTP_MSG_RPBEFORE;
5377 txn->status = 0;
5378 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5379 return 1;
5380 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5381 else if (unlikely(txn->status < 200))
5382 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5383
5384 /* we don't have any 1xx status code now */
5385
5386 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5387 * 4: check for server cookie.
5388 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5389 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5390 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5391 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5392
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5393
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5394 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5395 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5396 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5397 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]5398 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5399
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5400 /*
5401 * 6: add server cookie in the response if needed
5402 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5403 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5404 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5405 (!(t->flags & SN_DIRECT) ||
5406 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5407 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5408 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5409 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5410 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5411 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5412 /* the server is known, it's not the one the client requested, or the
5413 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5414 * insert a set-cookie here, except if we want to insert only on POST
5415 * requests and this one isn't. Note that servers which don't have cookies
5416 * (eg: some backup servers) will return a full cookie removal request.
5417 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5418 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5419 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5420 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5421 t->be->cookie_name);
5422 }
5423 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5424 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]5425
5426 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5427 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5428 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5429 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5430 trash.len += 5;
5431
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5432 if (t->be->cookie_maxlife) {
5433 /* emit first_date, which is either the original one or
5434 * the current date.
5435 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5436 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5437 s30tob64(txn->cookie_first_date ?
5438 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5439 (date.tv_sec+3) >> 2, trash.str + trash.len);
5440 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5441 }
5442 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5443 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5444 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5445
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5446 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5447 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5448
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5449 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5450 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5451
5452 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5453 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5454
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5455 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]5456 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5457
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5458 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5459 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5460 /* the server did not change, only the date was updated */
5461 txn->flags |= TX_SCK_UPDATED;
5462 else
5463 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5464
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5465 /* Here, we will tell an eventual cache on the client side that we don't
5466 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5467 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5468 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5469 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5470 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5471
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5472 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5473
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5474 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5475 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5476 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5477 }
5478 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5479
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5480 /*
5481 * 7: check if result will be cacheable with a cookie.
5482 * We'll block the response if security checks have caught
5483 * nasty things such as a cacheable cookie.
5484 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5485 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5486 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5487 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5488
5489 /* we're in presence of a cacheable response containing
5490 * a set-cookie header. We'll block it as requested by
5491 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5492 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5493 if (objt_server(t->target))
5494 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5495
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5496 t->be->be_counters.denied_resp++;
5497 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5498 if (t->listener->counters)
5499 t->listener->counters->denied_resp++;
5500
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5501 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5502 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5503 send_log(t->be, LOG_ALERT,
5504 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5505 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5506 goto return_srv_prx_502;
5507 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5508
5509 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5510 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5511 * If an "Upgrade" token is found, the header is left untouched in order
5512 * not to have to deal with some client bugs : some of them fail an upgrade
5513 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5514 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5515 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5516 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5517 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5518 unsigned int want_flags = 0;
5519
5520 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5521 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5522 /* we want a keep-alive response here. Keep-alive header
5523 * required if either side is not 1.1.
5524 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5525 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5526 want_flags |= TX_CON_KAL_SET;
5527 }
5528 else {
5529 /* we want a close response here. Close header required if
5530 * the server is 1.1, regardless of the client.
5531 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5532 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5533 want_flags |= TX_CON_CLO_SET;
5534 }
5535
5536 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5537 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5538 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5539
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5540 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5541 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5542 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5543 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5544
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5545 /*************************************************************
5546 * OK, that's finished for the headers. We have done what we *
5547 * could. Let's switch to the DATA state. *
5548 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5549
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5550 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5551
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5552 /* if the user wants to log as soon as possible, without counting
5553 * bytes from the server, then this is the right moment. We have
5554 * to temporarily assign bytes_out to log what we currently have.
5555 */
5556 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5557 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5558 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5559 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5560 t->logs.bytes_out = 0;
5561 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5562
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5563 /* Note: we must not try to cheat by jumping directly to DATA,
5564 * otherwise we would not let the client side wake up.
5565 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5566
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5567 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5568 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5569 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5570}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5571
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5572/* This function is an analyser which forwards response body (including chunk
5573 * sizes if any). It is called as soon as we must forward, even if we forward
5574 * zero byte. The only situation where it must not be called is when we're in
5575 * tunnel mode and we want to forward till the close. It's used both to forward
5576 * remaining data and to resync after end of body. It expects the msg_state to
5577 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5578 * 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]5579 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5580 * bytes of pending data + the headers if not already done (between sol and sov).
5581 * 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]5582 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5583int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5584{
5585 struct http_txn *txn = &s->txn;
5586 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5587 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5588 static struct buffer *tmpbuf = NULL;
5589 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5590 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5591
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5592 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5593 return 0;
5594
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5595 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]5596 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5597 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5598 /* Output closed while we were sending data. We must abort and
5599 * wake the other side up.
5600 */
5601 msg->msg_state = HTTP_MSG_ERROR;
5602 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5603 return 1;
5604 }
5605
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5606 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5607 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5608
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5609 /* this is the first time we need the compression buffer */
5610 if (s->comp_algo != NULL && tmpbuf == NULL) {
5611 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5612 goto aborted_xfer; /* no memory */
5613 }
5614
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5615 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5616 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5617 * rep->buf.p still points to the beginning of the message and msg->sol
5618 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5619 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5620 channel_forward(res, msg->sov);
5621 msg->next = 0;
5622 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5623
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5624 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5625 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5626 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5627 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5628 }
5629
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5630 if (s->comp_algo != NULL) {
5631 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5632 if (ret < 0)
5633 goto missing_data; /* not enough spaces in buffers */
5634 compressing = 1;
5635 }
5636
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5637 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5638 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5639 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5640 if (s->comp_algo == NULL) {
5641 bytes = msg->sov - msg->sol;
5642 if (msg->chunk_len || bytes) {
5643 msg->sol = msg->sov;
5644 msg->next -= bytes; /* will be forwarded */
5645 msg->chunk_len += bytes;
5646 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5647 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5648 }
5649
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5650 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5651 int ret;
5652
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5653 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5654 if (compressing) {
5655 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5656 if (ret < 0)
5657 goto aborted_xfer;
5658 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5659
5660 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5661 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5662
5663 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5664 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5665 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5666 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5667 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5668 if (compressing && consumed_data) {
5669 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5670 compressing = 0;
5671 }
5672 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5673 }
5674 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5675 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5676 * set ->sov and ->next to point to the body and switch to DATA or
5677 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5678 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5679 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5680
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5681 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5682 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5683 else if (ret < 0) {
5684 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5685 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]5686 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5687 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5688 if (compressing) {
5689 if (likely(msg->chunk_len > 0)) {
5690 /* skipping data if we are in compression mode */
5691 b_adv(res->buf, msg->next);
5692 msg->next = 0;
5693 msg->sov = 0;
5694 msg->sol = 0;
5695 } else {
5696 if (consumed_data) {
5697 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5698 compressing = 0;
5699 }
5700 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5701 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5702 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5703 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5704 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5705 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5706 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5707
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5708 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5709 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5710 else if (ret < 0) {
5711 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5712 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]5713 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5714 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5715 /* skipping data in buffer for compression */
5716 if (compressing) {
5717 b_adv(res->buf, msg->next);
5718 msg->next = 0;
5719 msg->sov = 0;
5720 msg->sol = 0;
5721 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5722 /* we're in MSG_CHUNK_SIZE now */
5723 }
5724 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5725 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5726
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5727 if (ret == 0)
5728 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5729 else if (ret < 0) {
5730 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5731 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]5732 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5733 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5734 if (s->comp_algo != NULL) {
5735 /* forwarding trailers */
5736 channel_forward(res, msg->next);
5737 msg->next = 0;
5738 }
5739 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5740 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5741 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5742 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5743 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5744 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5745 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5746 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5747 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5748 if (http_resync_states(s)) {
5749 http_silent_debug(__LINE__, s);
5750 /* some state changes occurred, maybe the analyser
5751 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5752 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5753 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5754 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5755 /* response errors are most likely due to
5756 * the client aborting the transfer.
5757 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5758 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5759 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5760 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5761 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5762 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5763 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5764 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5765 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5766 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5767 }
5768 }
5769
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5770 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5771 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5772 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5773 compressing = 0;
5774 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5775
5776 if (res->flags & CF_SHUTW)
5777 goto aborted_xfer;
5778
5779 /* stop waiting for data if the input is closed before the end. If the
5780 * client side was already closed, it means that the client has aborted,
5781 * so we don't want to count this as a server abort. Otherwise it's a
5782 * server abort.
5783 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5784 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5785 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5786 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5787 if (!(s->flags & SN_ERR_MASK))
5788 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5789 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5790 if (objt_server(s->target))
5791 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5792 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5793 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5794
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5795 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5796 if (!s->req->analysers)
5797 goto return_bad_res;
5798
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5799 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5800 if (s->comp_algo == NULL) {
5801 bytes = msg->sov - msg->sol;
5802 if (msg->chunk_len || bytes) {
5803 msg->sol = msg->sov;
5804 msg->next -= bytes; /* will be forwarded */
5805 msg->chunk_len += bytes;
5806 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5807 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5808 }
5809
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5810 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5811 * 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]5812 * Similarly, with keep-alive on the client side, we don't want to forward a
5813 * close.
5814 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5815 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5816 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5817 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5818 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5819
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5820 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5821 * 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]5822 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5823 * modes are already handled by the stream sock layer. We must not do
5824 * this in content-length mode because it could present the MSG_MORE
5825 * flag with the last block of forwarded data, which would cause an
5826 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5827 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5828 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5829 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5830
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5831 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5832 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5833 return 0;
5834
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5835 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5836 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5837 if (objt_server(s->target))
5838 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5839
5840 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5841 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5842 /* don't send any error message as we're in the body */
5843 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5844 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5845 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]5846 if (objt_server(s->target))
5847 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5848
5849 if (!(s->flags & SN_ERR_MASK))
5850 s->flags |= SN_ERR_PRXCOND;
5851 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5852 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5853 return 0;
5854
5855 aborted_xfer:
5856 txn->rsp.msg_state = HTTP_MSG_ERROR;
5857 /* don't send any error message as we're in the body */
5858 stream_int_retnclose(res->cons, NULL);
5859 res->analysers = 0;
5860 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5861
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5862 s->fe->fe_counters.cli_aborts++;
5863 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5864 if (objt_server(s->target))
5865 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5866
5867 if (!(s->flags & SN_ERR_MASK))
5868 s->flags |= SN_ERR_CLICL;
5869 if (!(s->flags & SN_FINST_MASK))
5870 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5871 return 0;
5872}
5873
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5874/* Iterate the same filter through all request headers.
5875 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5876 * Since it can manage the switch to another backend, it updates the per-proxy
5877 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5878 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5879int 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]5880{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5881 char term;
5882 char *cur_ptr, *cur_end, *cur_next;
5883 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5884 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5885 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5886 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5887
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5888 last_hdr = 0;
5889
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5890 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5891 old_idx = 0;
5892
5893 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5894 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5895 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5896 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5897 (exp->action == ACT_ALLOW ||
5898 exp->action == ACT_DENY ||
5899 exp->action == ACT_TARPIT))
5900 return 0;
5901
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5902 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5903 if (!cur_idx)
5904 break;
5905
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5906 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5907 cur_ptr = cur_next;
5908 cur_end = cur_ptr + cur_hdr->len;
5909 cur_next = cur_end + cur_hdr->cr + 1;
5910
5911 /* Now we have one header between cur_ptr and cur_end,
5912 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5913 */
5914
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5915 /* The annoying part is that pattern matching needs
5916 * that we modify the contents to null-terminate all
5917 * strings before testing them.
5918 */
5919
5920 term = *cur_end;
5921 *cur_end = '\0';
5922
5923 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5924 switch (exp->action) {
5925 case ACT_SETBE:
5926 /* It is not possible to jump a second time.
5927 * FIXME: should we return an HTTP/500 here so that
5928 * the admin knows there's a problem ?
5929 */
5930 if (t->be != t->fe)
5931 break;
5932
5933 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5934 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5935 last_hdr = 1;
5936 break;
5937
5938 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5939 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5940 last_hdr = 1;
5941 break;
5942
5943 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5944 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5945 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5946
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5947 t->fe->fe_counters.denied_req++;
5948 if (t->fe != t->be)
5949 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5950 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5951 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5952
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5953 break;
5954
5955 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5956 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5957 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5958
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5959 t->fe->fe_counters.denied_req++;
5960 if (t->fe != t->be)
5961 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5962 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5963 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5964
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5965 break;
5966
5967 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5968 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
5969 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5970 /* FIXME: if the user adds a newline in the replacement, the
5971 * index will not be recalculated for now, and the new line
5972 * will not be counted as a new header.
5973 */
5974
5975 cur_end += delta;
5976 cur_next += delta;
5977 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5978 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5979 break;
5980
5981 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5982 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5983 cur_next += delta;
5984
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5985 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5986 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5987 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5988 cur_hdr->len = 0;
5989 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5990 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5991 break;
5992
5993 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5994 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5995 if (cur_end)
5996 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5997
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5998 /* keep the link from this header to next one in case of later
5999 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6000 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6001 old_idx = cur_idx;
6002 }
6003 return 0;
6004}
6005
6006
6007/* Apply the filter to the request line.
6008 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6009 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6010 * Since it can manage the switch to another backend, it updates the per-proxy
6011 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6012 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6013int 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]6014{
6015 char term;
6016 char *cur_ptr, *cur_end;
6017 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6018 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6019 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6020
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6021 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6022 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6023 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6024 (exp->action == ACT_ALLOW ||
6025 exp->action == ACT_DENY ||
6026 exp->action == ACT_TARPIT))
6027 return 0;
6028 else if (exp->action == ACT_REMOVE)
6029 return 0;
6030
6031 done = 0;
6032
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6033 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6034 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6035
6036 /* Now we have the request line between cur_ptr and cur_end */
6037
6038 /* The annoying part is that pattern matching needs
6039 * that we modify the contents to null-terminate all
6040 * strings before testing them.
6041 */
6042
6043 term = *cur_end;
6044 *cur_end = '\0';
6045
6046 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6047 switch (exp->action) {
6048 case ACT_SETBE:
6049 /* It is not possible to jump a second time.
6050 * FIXME: should we return an HTTP/500 here so that
6051 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6052 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6053 if (t->be != t->fe)
6054 break;
6055
6056 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6057 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6058 done = 1;
6059 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6060
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6061 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6062 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6063 done = 1;
6064 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6065
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6066 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6067 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6068
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6069 t->fe->fe_counters.denied_req++;
6070 if (t->fe != t->be)
6071 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6072 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6073 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6074
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6075 done = 1;
6076 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6078 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6079 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6080
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6081 t->fe->fe_counters.denied_req++;
6082 if (t->fe != t->be)
6083 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6084 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6085 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6086
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6087 done = 1;
6088 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6089
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6090 case ACT_REPLACE:
6091 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6092 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6093 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6094 /* FIXME: if the user adds a newline in the replacement, the
6095 * index will not be recalculated for now, and the new line
6096 * will not be counted as a new header.
6097 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6098
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6099 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6100 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6101 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6102 HTTP_MSG_RQMETH,
6103 cur_ptr, cur_end + 1,
6104 NULL, NULL);
6105 if (unlikely(!cur_end))
6106 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6107
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6108 /* we have a full request and we know that we have either a CR
6109 * or an LF at <ptr>.
6110 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6111 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6112 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]6113 /* there is no point trying this regex on headers */
6114 return 1;
6115 }
6116 }
6117 *cur_end = term; /* restore the string terminator */
6118 return done;
6119}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6120
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6121
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6122
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6123/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6124 * 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]6125 * 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]6126 * unparsable request. Since it can manage the switch to another backend, it
6127 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6128 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6129int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6130{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6131 struct http_txn *txn = &s->txn;
6132 struct hdr_exp *exp;
6133
6134 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6135 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6136
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6137 /*
6138 * The interleaving of transformations and verdicts
6139 * makes it difficult to decide to continue or stop
6140 * the evaluation.
6141 */
6142
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6143 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6144 break;
6145
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6146 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6147 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6148 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6149 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6150
6151 /* if this filter had a condition, evaluate it now and skip to
6152 * next filter if the condition does not match.
6153 */
6154 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6155 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]6156 ret = acl_pass(ret);
6157 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6158 ret = !ret;
6159
6160 if (!ret)
6161 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6162 }
6163
6164 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6165 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6166 if (unlikely(ret < 0))
6167 return -1;
6168
6169 if (likely(ret == 0)) {
6170 /* The filter did not match the request, it can be
6171 * iterated through all headers.
6172 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6173 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6174 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6175 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6176 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6177}
6178
6179
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6180
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6181/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6182 * Try to retrieve the server associated to the appsession.
6183 * If the server is found, it's assigned to the session.
6184 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6185void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6186 struct http_txn *txn = &t->txn;
6187 appsess *asession = NULL;
6188 char *sessid_temp = NULL;
6189
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6190 if (len > t->be->appsession_len) {
6191 len = t->be->appsession_len;
6192 }
6193
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6194 if (t->be->options2 & PR_O2_AS_REQL) {
6195 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6196 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6197 /* 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]6198 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6199 }
6200
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6201 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6202 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6203 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6204 return;
6205 }
6206
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6207 memcpy(txn->sessid, buf, len);
6208 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6209 }
6210
6211 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6212 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6213 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6214 return;
6215 }
6216
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6217 memcpy(sessid_temp, buf, len);
6218 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6219
6220 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6221 /* free previously allocated memory */
6222 pool_free2(apools.sessid, sessid_temp);
6223
6224 if (asession != NULL) {
6225 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6226 if (!(t->be->options2 & PR_O2_AS_REQL))
6227 asession->request_count++;
6228
6229 if (asession->serverid != NULL) {
6230 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6231
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6232 while (srv) {
6233 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6234 if ((srv->state & SRV_RUNNING) ||
6235 (t->be->options & PR_O_PERSIST) ||
6236 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6237 /* we found the server and it's usable */
6238 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6239 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6240 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6241 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6242
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6243 break;
6244 } else {
6245 txn->flags &= ~TX_CK_MASK;
6246 txn->flags |= TX_CK_DOWN;
6247 }
6248 }
6249 srv = srv->next;
6250 }
6251 }
6252 }
6253}
6254
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6255/* Find the end of a cookie value contained between <s> and <e>. It works the
6256 * same way as with headers above except that the semi-colon also ends a token.
6257 * See RFC2965 for more information. Note that it requires a valid header to
6258 * return a valid result.
6259 */
6260char *find_cookie_value_end(char *s, const char *e)
6261{
6262 int quoted, qdpair;
6263
6264 quoted = qdpair = 0;
6265 for (; s < e; s++) {
6266 if (qdpair) qdpair = 0;
6267 else if (quoted) {
6268 if (*s == '\\') qdpair = 1;
6269 else if (*s == '"') quoted = 0;
6270 }
6271 else if (*s == '"') quoted = 1;
6272 else if (*s == ',' || *s == ';') return s;
6273 }
6274 return s;
6275}
6276
6277/* Delete a value in a header between delimiters <from> and <next> in buffer
6278 * <buf>. The number of characters displaced is returned, and the pointer to
6279 * the first delimiter is updated if required. The function tries as much as
6280 * possible to respect the following principles :
6281 * - replace <from> delimiter by the <next> one unless <from> points to a
6282 * colon, in which case <next> is simply removed
6283 * - set exactly one space character after the new first delimiter, unless
6284 * there are not enough characters in the block being moved to do so.
6285 * - remove unneeded spaces before the previous delimiter and after the new
6286 * one.
6287 *
6288 * It is the caller's responsibility to ensure that :
6289 * - <from> points to a valid delimiter or the colon ;
6290 * - <next> points to a valid delimiter or the final CR/LF ;
6291 * - there are non-space chars before <from> ;
6292 * - there is a CR/LF at or after <next>.
6293 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6294int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6295{
6296 char *prev = *from;
6297
6298 if (*prev == ':') {
6299 /* We're removing the first value, preserve the colon and add a
6300 * space if possible.
6301 */
6302 if (!http_is_crlf[(unsigned char)*next])
6303 next++;
6304 prev++;
6305 if (prev < next)
6306 *prev++ = ' ';
6307
6308 while (http_is_spht[(unsigned char)*next])
6309 next++;
6310 } else {
6311 /* Remove useless spaces before the old delimiter. */
6312 while (http_is_spht[(unsigned char)*(prev-1)])
6313 prev--;
6314 *from = prev;
6315
6316 /* copy the delimiter and if possible a space if we're
6317 * not at the end of the line.
6318 */
6319 if (!http_is_crlf[(unsigned char)*next]) {
6320 *prev++ = *next++;
6321 if (prev + 1 < next)
6322 *prev++ = ' ';
6323 while (http_is_spht[(unsigned char)*next])
6324 next++;
6325 }
6326 }
6327 return buffer_replace2(buf, prev, next, NULL, 0);
6328}
6329
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6330/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6331 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6332 * desirable to call it only when needed. This code is quite complex because
6333 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6334 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6335 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6336void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6337{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6338 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6339 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6340 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6341 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6342 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6343
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6344 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6345 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6346 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6347
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6348 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6349 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6350 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6351
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6352 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6353 hdr_beg = hdr_next;
6354 hdr_end = hdr_beg + cur_hdr->len;
6355 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6356
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6357 /* We have one full header between hdr_beg and hdr_end, and the
6358 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6359 * "Cookie:" headers.
6360 */
6361
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6362 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6363 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6364 old_idx = cur_idx;
6365 continue;
6366 }
6367
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6368 del_from = NULL; /* nothing to be deleted */
6369 preserve_hdr = 0; /* assume we may kill the whole header */
6370
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6371 /* Now look for cookies. Conforming to RFC2109, we have to support
6372 * attributes whose name begin with a '$', and associate them with
6373 * the right cookie, if we want to delete this cookie.
6374 * So there are 3 cases for each cookie read :
6375 * 1) it's a special attribute, beginning with a '$' : ignore it.
6376 * 2) it's a server id cookie that we *MAY* want to delete : save
6377 * some pointers on it (last semi-colon, beginning of cookie...)
6378 * 3) it's an application cookie : we *MAY* have to delete a previous
6379 * "special" cookie.
6380 * At the end of loop, if a "special" cookie remains, we may have to
6381 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6382 * *MUST* delete it.
6383 *
6384 * Note: RFC2965 is unclear about the processing of spaces around
6385 * the equal sign in the ATTR=VALUE form. A careful inspection of
6386 * the RFC explicitly allows spaces before it, and not within the
6387 * tokens (attrs or values). An inspection of RFC2109 allows that
6388 * too but section 10.1.3 lets one think that spaces may be allowed
6389 * after the equal sign too, resulting in some (rare) buggy
6390 * implementations trying to do that. So let's do what servers do.
6391 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6392 * allowed quoted strings in values, with any possible character
6393 * after a backslash, including control chars and delimitors, which
6394 * causes parsing to become ambiguous. Browsers also allow spaces
6395 * within values even without quotes.
6396 *
6397 * We have to keep multiple pointers in order to support cookie
6398 * removal at the beginning, middle or end of header without
6399 * corrupting the header. All of these headers are valid :
6400 *
6401 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6402 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6403 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6404 * | | | | | | | | |
6405 * | | | | | | | | hdr_end <--+
6406 * | | | | | | | +--> next
6407 * | | | | | | +----> val_end
6408 * | | | | | +-----------> val_beg
6409 * | | | | +--------------> equal
6410 * | | | +----------------> att_end
6411 * | | +---------------------> att_beg
6412 * | +--------------------------> prev
6413 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6414 */
6415
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6416 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6417 /* Iterate through all cookies on this line */
6418
6419 /* find att_beg */
6420 att_beg = prev + 1;
6421 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6422 att_beg++;
6423
6424 /* find att_end : this is the first character after the last non
6425 * space before the equal. It may be equal to hdr_end.
6426 */
6427 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6428
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6429 while (equal < hdr_end) {
6430 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6431 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6432 if (http_is_spht[(unsigned char)*equal++])
6433 continue;
6434 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6435 }
6436
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6437 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6438 * is between <att_beg> and <equal>, both may be identical.
6439 */
6440
6441 /* look for end of cookie if there is an equal sign */
6442 if (equal < hdr_end && *equal == '=') {
6443 /* look for the beginning of the value */
6444 val_beg = equal + 1;
6445 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6446 val_beg++;
6447
6448 /* find the end of the value, respecting quotes */
6449 next = find_cookie_value_end(val_beg, hdr_end);
6450
6451 /* make val_end point to the first white space or delimitor after the value */
6452 val_end = next;
6453 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6454 val_end--;
6455 } else {
6456 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6457 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6458
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6459 /* We have nothing to do with attributes beginning with '$'. However,
6460 * they will automatically be removed if a header before them is removed,
6461 * since they're supposed to be linked together.
6462 */
6463 if (*att_beg == '$')
6464 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6465
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6466 /* Ignore cookies with no equal sign */
6467 if (equal == next) {
6468 /* This is not our cookie, so we must preserve it. But if we already
6469 * scheduled another cookie for removal, we cannot remove the
6470 * complete header, but we can remove the previous block itself.
6471 */
6472 preserve_hdr = 1;
6473 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6474 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6475 val_end += delta;
6476 next += delta;
6477 hdr_end += delta;
6478 hdr_next += delta;
6479 cur_hdr->len += delta;
6480 http_msg_move_end(&txn->req, delta);
6481 prev = del_from;
6482 del_from = NULL;
6483 }
6484 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6485 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6486
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6487 /* if there are spaces around the equal sign, we need to
6488 * strip them otherwise we'll get trouble for cookie captures,
6489 * or even for rewrites. Since this happens extremely rarely,
6490 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6491 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6492 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6493 int stripped_before = 0;
6494 int stripped_after = 0;
6495
6496 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6497 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6498 equal += stripped_before;
6499 val_beg += stripped_before;
6500 }
6501
6502 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6503 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6504 val_beg += stripped_after;
6505 stripped_before += stripped_after;
6506 }
6507
6508 val_end += stripped_before;
6509 next += stripped_before;
6510 hdr_end += stripped_before;
6511 hdr_next += stripped_before;
6512 cur_hdr->len += stripped_before;
6513 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6514 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6515 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6516
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6517 /* First, let's see if we want to capture this cookie. We check
6518 * that we don't already have a client side cookie, because we
6519 * can only capture one. Also as an optimisation, we ignore
6520 * cookies shorter than the declared name.
6521 */
6522 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6523 (val_end - att_beg >= t->fe->capture_namelen) &&
6524 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6525 int log_len = val_end - att_beg;
6526
6527 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6528 Alert("HTTP logging : out of memory.\n");
6529 } else {
6530 if (log_len > t->fe->capture_len)
6531 log_len = t->fe->capture_len;
6532 memcpy(txn->cli_cookie, att_beg, log_len);
6533 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6534 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6535 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6536
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6537 /* Persistence cookies in passive, rewrite or insert mode have the
6538 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6539 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6540 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6541 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6542 * For cookies in prefix mode, the form is :
6543 *
6544 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6545 */
6546 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6547 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6548 struct server *srv = t->be->srv;
6549 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6550
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6551 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6552 * have the server ID between val_beg and delim, and the original cookie between
6553 * delim+1 and val_end. Otherwise, delim==val_end :
6554 *
6555 * Cookie: NAME=SRV; # in all but prefix modes
6556 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6557 * | || || | |+-> next
6558 * | || || | +--> val_end
6559 * | || || +---------> delim
6560 * | || |+------------> val_beg
6561 * | || +-------------> att_end = equal
6562 * | |+-----------------> att_beg
6563 * | +------------------> prev
6564 * +-------------------------> hdr_beg
6565 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6566
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6567 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6568 for (delim = val_beg; delim < val_end; delim++)
6569 if (*delim == COOKIE_DELIM)
6570 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6571 } else {
6572 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6573 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6574 /* Now check if the cookie contains a date field, which would
6575 * appear after a vertical bar ('|') just after the server name
6576 * and before the delimiter.
6577 */
6578 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6579 if (vbar1) {
6580 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6581 * right is the last seen date. It is a base64 encoded
6582 * 30-bit value representing the UNIX date since the
6583 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6584 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6585 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6586 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6587 if (val_end - vbar1 >= 5) {
6588 val = b64tos30(vbar1);
6589 if (val > 0)
6590 txn->cookie_last_date = val << 2;
6591 }
6592 /* look for a second vertical bar */
6593 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6594 if (vbar1 && (val_end - vbar1 > 5)) {
6595 val = b64tos30(vbar1 + 1);
6596 if (val > 0)
6597 txn->cookie_first_date = val << 2;
6598 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6599 }
6600 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6601
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6602 /* if the cookie has an expiration date and the proxy wants to check
6603 * it, then we do that now. We first check if the cookie is too old,
6604 * then only if it has expired. We detect strict overflow because the
6605 * time resolution here is not great (4 seconds). Cookies with dates
6606 * in the future are ignored if their offset is beyond one day. This
6607 * allows an admin to fix timezone issues without expiring everyone
6608 * and at the same time avoids keeping unwanted side effects for too
6609 * long.
6610 */
6611 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6612 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6613 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6614 txn->flags &= ~TX_CK_MASK;
6615 txn->flags |= TX_CK_OLD;
6616 delim = val_beg; // let's pretend we have not found the cookie
6617 txn->cookie_first_date = 0;
6618 txn->cookie_last_date = 0;
6619 }
6620 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6621 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6622 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6623 txn->flags &= ~TX_CK_MASK;
6624 txn->flags |= TX_CK_EXPIRED;
6625 delim = val_beg; // let's pretend we have not found the cookie
6626 txn->cookie_first_date = 0;
6627 txn->cookie_last_date = 0;
6628 }
6629
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6630 /* Here, we'll look for the first running server which supports the cookie.
6631 * This allows to share a same cookie between several servers, for example
6632 * to dedicate backup servers to specific servers only.
6633 * However, to prevent clients from sticking to cookie-less backup server
6634 * when they have incidentely learned an empty cookie, we simply ignore
6635 * empty cookies and mark them as invalid.
6636 * The same behaviour is applied when persistence must be ignored.
6637 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6638 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6639 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6640
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6641 while (srv) {
6642 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6643 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6644 if ((srv->state & SRV_RUNNING) ||
6645 (t->be->options & PR_O_PERSIST) ||
6646 (t->flags & SN_FORCE_PRST)) {
6647 /* we found the server and we can use it */
6648 txn->flags &= ~TX_CK_MASK;
6649 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6650 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6651 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6652 break;
6653 } else {
6654 /* we found a server, but it's down,
6655 * mark it as such and go on in case
6656 * another one is available.
6657 */
6658 txn->flags &= ~TX_CK_MASK;
6659 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6660 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6661 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6662 srv = srv->next;
6663 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6664
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6665 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6666 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6667 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6668 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6669 txn->flags |= TX_CK_UNUSED;
6670 else
6671 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6672 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6673
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6674 /* depending on the cookie mode, we may have to either :
6675 * - delete the complete cookie if we're in insert+indirect mode, so that
6676 * the server never sees it ;
6677 * - remove the server id from the cookie value, and tag the cookie as an
6678 * application cookie so that it does not get accidentely removed later,
6679 * if we're in cookie prefix mode
6680 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6681 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6682 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6683
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6684 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6685 val_end += delta;
6686 next += delta;
6687 hdr_end += delta;
6688 hdr_next += delta;
6689 cur_hdr->len += delta;
6690 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6691
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6692 del_from = NULL;
6693 preserve_hdr = 1; /* we want to keep this cookie */
6694 }
6695 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6696 (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]6697 del_from = prev;
6698 }
6699 } else {
6700 /* This is not our cookie, so we must preserve it. But if we already
6701 * scheduled another cookie for removal, we cannot remove the
6702 * complete header, but we can remove the previous block itself.
6703 */
6704 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6705
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6706 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6707 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6708 if (att_beg >= del_from)
6709 att_beg += delta;
6710 if (att_end >= del_from)
6711 att_end += delta;
6712 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6713 val_end += delta;
6714 next += delta;
6715 hdr_end += delta;
6716 hdr_next += delta;
6717 cur_hdr->len += delta;
6718 http_msg_move_end(&txn->req, delta);
6719 prev = del_from;
6720 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6721 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6722 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6723
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6724 /* Look for the appsession cookie unless persistence must be ignored */
6725 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6726 int cmp_len, value_len;
6727 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6728
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6729 if (t->be->options2 & PR_O2_AS_PFX) {
6730 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6731 value_begin = att_beg + t->be->appsession_name_len;
6732 value_len = val_end - att_beg - t->be->appsession_name_len;
6733 } else {
6734 cmp_len = att_end - att_beg;
6735 value_begin = val_beg;
6736 value_len = val_end - val_beg;
6737 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6738
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6739 /* let's see if the cookie is our appcookie */
6740 if (cmp_len == t->be->appsession_name_len &&
6741 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6742 manage_client_side_appsession(t, value_begin, value_len);
6743 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6744 }
6745
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6746 /* continue with next cookie on this header line */
6747 att_beg = next;
6748 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6749
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6750 /* There are no more cookies on this line.
6751 * We may still have one (or several) marked for deletion at the
6752 * end of the line. We must do this now in two ways :
6753 * - if some cookies must be preserved, we only delete from the
6754 * mark to the end of line ;
6755 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6756 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6757 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6758 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6759 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6760 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6761 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6762 cur_hdr->len += delta;
6763 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6764 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6765
6766 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6767 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6768 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6769 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6770 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6771 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6772 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6773 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6774 }
6775
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6776 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6777 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6778 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6779}
6780
6781
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6782/* Iterate the same filter through all response headers contained in <rtr>.
6783 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6784 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6785int 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]6786{
6787 char term;
6788 char *cur_ptr, *cur_end, *cur_next;
6789 int cur_idx, old_idx, last_hdr;
6790 struct http_txn *txn = &t->txn;
6791 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6792 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6793
6794 last_hdr = 0;
6795
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6796 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6797 old_idx = 0;
6798
6799 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6800 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6801 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6802 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6803 (exp->action == ACT_ALLOW ||
6804 exp->action == ACT_DENY))
6805 return 0;
6806
6807 cur_idx = txn->hdr_idx.v[old_idx].next;
6808 if (!cur_idx)
6809 break;
6810
6811 cur_hdr = &txn->hdr_idx.v[cur_idx];
6812 cur_ptr = cur_next;
6813 cur_end = cur_ptr + cur_hdr->len;
6814 cur_next = cur_end + cur_hdr->cr + 1;
6815
6816 /* Now we have one header between cur_ptr and cur_end,
6817 * and the next header starts at cur_next.
6818 */
6819
6820 /* The annoying part is that pattern matching needs
6821 * that we modify the contents to null-terminate all
6822 * strings before testing them.
6823 */
6824
6825 term = *cur_end;
6826 *cur_end = '\0';
6827
6828 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6829 switch (exp->action) {
6830 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6831 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6832 last_hdr = 1;
6833 break;
6834
6835 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6836 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6837 last_hdr = 1;
6838 break;
6839
6840 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6841 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6842 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6843 /* FIXME: if the user adds a newline in the replacement, the
6844 * index will not be recalculated for now, and the new line
6845 * will not be counted as a new header.
6846 */
6847
6848 cur_end += delta;
6849 cur_next += delta;
6850 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6851 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6852 break;
6853
6854 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6855 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6856 cur_next += delta;
6857
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6858 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6859 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6860 txn->hdr_idx.used--;
6861 cur_hdr->len = 0;
6862 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6863 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6864 break;
6865
6866 }
6867 }
6868 if (cur_end)
6869 *cur_end = term; /* restore the string terminator */
6870
6871 /* keep the link from this header to next one in case of later
6872 * removal of next header.
6873 */
6874 old_idx = cur_idx;
6875 }
6876 return 0;
6877}
6878
6879
6880/* Apply the filter to the status line in the response buffer <rtr>.
6881 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6882 * or -1 if a replacement resulted in an invalid status line.
6883 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6884int 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]6885{
6886 char term;
6887 char *cur_ptr, *cur_end;
6888 int done;
6889 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6890 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6891
6892
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6893 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6894 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6895 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6896 (exp->action == ACT_ALLOW ||
6897 exp->action == ACT_DENY))
6898 return 0;
6899 else if (exp->action == ACT_REMOVE)
6900 return 0;
6901
6902 done = 0;
6903
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6904 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6905 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6906
6907 /* Now we have the status line between cur_ptr and cur_end */
6908
6909 /* The annoying part is that pattern matching needs
6910 * that we modify the contents to null-terminate all
6911 * strings before testing them.
6912 */
6913
6914 term = *cur_end;
6915 *cur_end = '\0';
6916
6917 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6918 switch (exp->action) {
6919 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6920 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6921 done = 1;
6922 break;
6923
6924 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6925 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6926 done = 1;
6927 break;
6928
6929 case ACT_REPLACE:
6930 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6931 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6932 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6933 /* FIXME: if the user adds a newline in the replacement, the
6934 * index will not be recalculated for now, and the new line
6935 * will not be counted as a new header.
6936 */
6937
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6938 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6939 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6940 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6941 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6942 cur_ptr, cur_end + 1,
6943 NULL, NULL);
6944 if (unlikely(!cur_end))
6945 return -1;
6946
6947 /* we have a full respnse and we know that we have either a CR
6948 * or an LF at <ptr>.
6949 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6950 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]6951 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]6952 /* there is no point trying this regex on headers */
6953 return 1;
6954 }
6955 }
6956 *cur_end = term; /* restore the string terminator */
6957 return done;
6958}
6959
6960
6961
6962/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6963 * 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]6964 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6965 * unparsable response.
6966 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6967int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6968{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6969 struct http_txn *txn = &s->txn;
6970 struct hdr_exp *exp;
6971
6972 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6973 int ret;
6974
6975 /*
6976 * The interleaving of transformations and verdicts
6977 * makes it difficult to decide to continue or stop
6978 * the evaluation.
6979 */
6980
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6981 if (txn->flags & TX_SVDENY)
6982 break;
6983
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6984 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6985 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6986 exp->action == ACT_PASS)) {
6987 exp = exp->next;
6988 continue;
6989 }
6990
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6991 /* if this filter had a condition, evaluate it now and skip to
6992 * next filter if the condition does not match.
6993 */
6994 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6995 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]6996 ret = acl_pass(ret);
6997 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6998 ret = !ret;
6999 if (!ret)
7000 continue;
7001 }
7002
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7003 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7004 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7005 if (unlikely(ret < 0))
7006 return -1;
7007
7008 if (likely(ret == 0)) {
7009 /* The filter did not match the response, it can be
7010 * iterated through all headers.
7011 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7012 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7013 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7014 }
7015 return 0;
7016}
7017
7018
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7019/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7020 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7021 * desirable to call it only when needed. This function is also used when we
7022 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7023 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7024void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7025{
7026 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7027 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7028 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7029 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7030 char *hdr_beg, *hdr_end, *hdr_next;
7031 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7032
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7033 /* Iterate through the headers.
7034 * we start with the start line.
7035 */
7036 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7037 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7038
7039 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7040 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7041 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7042
7043 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7044 hdr_beg = hdr_next;
7045 hdr_end = hdr_beg + cur_hdr->len;
7046 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7047
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7048 /* We have one full header between hdr_beg and hdr_end, and the
7049 * next header starts at hdr_next. We're only interested in
7050 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7051 */
7052
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7053 is_cookie2 = 0;
7054 prev = hdr_beg + 10;
7055 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7056 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7057 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7058 if (!val) {
7059 old_idx = cur_idx;
7060 continue;
7061 }
7062 is_cookie2 = 1;
7063 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7064 }
7065
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7066 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7067 * <prev> points to the colon.
7068 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7069 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7070
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7071 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7072 * check-cache is enabled) and we are not interested in checking
7073 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7074 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7075 if (t->be->cookie_name == NULL &&
7076 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7077 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7078 return;
7079
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7080 /* OK so now we know we have to process this response cookie.
7081 * The format of the Set-Cookie header is slightly different
7082 * from the format of the Cookie header in that it does not
7083 * support the comma as a cookie delimiter (thus the header
7084 * cannot be folded) because the Expires attribute described in
7085 * the original Netscape's spec may contain an unquoted date
7086 * with a comma inside. We have to live with this because
7087 * many browsers don't support Max-Age and some browsers don't
7088 * support quoted strings. However the Set-Cookie2 header is
7089 * clean.
7090 *
7091 * We have to keep multiple pointers in order to support cookie
7092 * removal at the beginning, middle or end of header without
7093 * corrupting the header (in case of set-cookie2). A special
7094 * pointer, <scav> points to the beginning of the set-cookie-av
7095 * fields after the first semi-colon. The <next> pointer points
7096 * either to the end of line (set-cookie) or next unquoted comma
7097 * (set-cookie2). All of these headers are valid :
7098 *
7099 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7100 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7101 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7102 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7103 * | | | | | | | | | |
7104 * | | | | | | | | +-> next hdr_end <--+
7105 * | | | | | | | +------------> scav
7106 * | | | | | | +--------------> val_end
7107 * | | | | | +--------------------> val_beg
7108 * | | | | +----------------------> equal
7109 * | | | +------------------------> att_end
7110 * | | +----------------------------> att_beg
7111 * | +------------------------------> prev
7112 * +-----------------------------------------> hdr_beg
7113 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7114
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7115 for (; prev < hdr_end; prev = next) {
7116 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7117
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7118 /* find att_beg */
7119 att_beg = prev + 1;
7120 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7121 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7122
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7123 /* find att_end : this is the first character after the last non
7124 * space before the equal. It may be equal to hdr_end.
7125 */
7126 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7127
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7128 while (equal < hdr_end) {
7129 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7130 break;
7131 if (http_is_spht[(unsigned char)*equal++])
7132 continue;
7133 att_end = equal;
7134 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7135
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7136 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7137 * is between <att_beg> and <equal>, both may be identical.
7138 */
7139
7140 /* look for end of cookie if there is an equal sign */
7141 if (equal < hdr_end && *equal == '=') {
7142 /* look for the beginning of the value */
7143 val_beg = equal + 1;
7144 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7145 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7146
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7147 /* find the end of the value, respecting quotes */
7148 next = find_cookie_value_end(val_beg, hdr_end);
7149
7150 /* make val_end point to the first white space or delimitor after the value */
7151 val_end = next;
7152 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7153 val_end--;
7154 } else {
7155 /* <equal> points to next comma, semi-colon or EOL */
7156 val_beg = val_end = next = equal;
7157 }
7158
7159 if (next < hdr_end) {
7160 /* Set-Cookie2 supports multiple cookies, and <next> points to
7161 * a colon or semi-colon before the end. So skip all attr-value
7162 * pairs and look for the next comma. For Set-Cookie, since
7163 * commas are permitted in values, skip to the end.
7164 */
7165 if (is_cookie2)
7166 next = find_hdr_value_end(next, hdr_end);
7167 else
7168 next = hdr_end;
7169 }
7170
7171 /* Now everything is as on the diagram above */
7172
7173 /* Ignore cookies with no equal sign */
7174 if (equal == val_end)
7175 continue;
7176
7177 /* If there are spaces around the equal sign, we need to
7178 * strip them otherwise we'll get trouble for cookie captures,
7179 * or even for rewrites. Since this happens extremely rarely,
7180 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7181 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7182 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7183 int stripped_before = 0;
7184 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7185
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7186 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7187 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7188 equal += stripped_before;
7189 val_beg += stripped_before;
7190 }
7191
7192 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7193 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7194 val_beg += stripped_after;
7195 stripped_before += stripped_after;
7196 }
7197
7198 val_end += stripped_before;
7199 next += stripped_before;
7200 hdr_end += stripped_before;
7201 hdr_next += stripped_before;
7202 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7203 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7204 }
7205
7206 /* First, let's see if we want to capture this cookie. We check
7207 * that we don't already have a server side cookie, because we
7208 * can only capture one. Also as an optimisation, we ignore
7209 * cookies shorter than the declared name.
7210 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7211 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7212 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7213 (val_end - att_beg >= t->fe->capture_namelen) &&
7214 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7215 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7216 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7217 Alert("HTTP logging : out of memory.\n");
7218 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7219 else {
7220 if (log_len > t->fe->capture_len)
7221 log_len = t->fe->capture_len;
7222 memcpy(txn->srv_cookie, att_beg, log_len);
7223 txn->srv_cookie[log_len] = 0;
7224 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7225 }
7226
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7227 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7228 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7229 if (!(t->flags & SN_IGNORE_PRST) &&
7230 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7231 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7232 /* assume passive cookie by default */
7233 txn->flags &= ~TX_SCK_MASK;
7234 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7235
7236 /* If the cookie is in insert mode on a known server, we'll delete
7237 * this occurrence because we'll insert another one later.
7238 * 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]7239 * a direct access.
7240 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7241 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7242 /* The "preserve" flag was set, we don't want to touch the
7243 * server's cookie.
7244 */
7245 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7246 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7247 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7248 /* this cookie must be deleted */
7249 if (*prev == ':' && next == hdr_end) {
7250 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7251 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7252 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7253 txn->hdr_idx.used--;
7254 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7255 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7256 hdr_next += delta;
7257 http_msg_move_end(&txn->rsp, delta);
7258 /* note: while both invalid now, <next> and <hdr_end>
7259 * are still equal, so the for() will stop as expected.
7260 */
7261 } else {
7262 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7263 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7264 next = prev;
7265 hdr_end += delta;
7266 hdr_next += delta;
7267 cur_hdr->len += delta;
7268 http_msg_move_end(&txn->rsp, delta);
7269 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7270 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7271 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7272 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7273 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7274 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7275 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7276 * with this server since we know it.
7277 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7278 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7279 next += delta;
7280 hdr_end += delta;
7281 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7282 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7283 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7284
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7285 txn->flags &= ~TX_SCK_MASK;
7286 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7287 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7288 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7289 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7290 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7291 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7292 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7293 next += delta;
7294 hdr_end += delta;
7295 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7296 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7297 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7298
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7299 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7300 txn->flags &= ~TX_SCK_MASK;
7301 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7302 }
7303 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7304 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7305 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7306 int cmp_len, value_len;
7307 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7308
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7309 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7310 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7311 value_begin = att_beg + t->be->appsession_name_len;
7312 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]7313 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7314 cmp_len = att_end - att_beg;
7315 value_begin = val_beg;
7316 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7317 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7318
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7319 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7320 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7321 /* free a possibly previously allocated memory */
7322 pool_free2(apools.sessid, txn->sessid);
7323
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7324 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7325 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7326 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7327 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7328 return;
7329 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7330 memcpy(txn->sessid, value_begin, value_len);
7331 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7332 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7333 }
7334 /* that's done for this cookie, check the next one on the same
7335 * line when next != hdr_end (only if is_cookie2).
7336 */
7337 }
7338 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7339 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7340 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7341
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7342 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7343 appsess *asession = NULL;
7344 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7345 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7346 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7347 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7348 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7349 Alert("Not enough Memory process_srv():asession:calloc().\n");
7350 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7351 return;
7352 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7353 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7354
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7355 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7356 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7357 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]7358 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7359 return;
7360 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7361 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7362 asession->sessid[t->be->appsession_len] = 0;
7363
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7364 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7365 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7366 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7367 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]7368 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7369 return;
7370 }
7371 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7372 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7373
7374 asession->request_count = 0;
7375 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7376 }
7377
7378 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7379 asession->request_count++;
7380 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7381}
7382
7383
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7384/*
7385 * Check if response is cacheable or not. Updates t->flags.
7386 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7387void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7388{
7389 struct http_txn *txn = &t->txn;
7390 char *p1, *p2;
7391
7392 char *cur_ptr, *cur_end, *cur_next;
7393 int cur_idx;
7394
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7395 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7396 return;
7397
7398 /* Iterate through the headers.
7399 * we start with the start line.
7400 */
7401 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7402 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7403
7404 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7405 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7406 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7407
7408 cur_hdr = &txn->hdr_idx.v[cur_idx];
7409 cur_ptr = cur_next;
7410 cur_end = cur_ptr + cur_hdr->len;
7411 cur_next = cur_end + cur_hdr->cr + 1;
7412
7413 /* We have one full header between cur_ptr and cur_end, and the
7414 * next header starts at cur_next. We're only interested in
7415 * "Cookie:" headers.
7416 */
7417
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7418 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7419 if (val) {
7420 if ((cur_end - (cur_ptr + val) >= 8) &&
7421 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7422 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7423 return;
7424 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7425 }
7426
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7427 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7428 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7429 continue;
7430
7431 /* OK, right now we know we have a cache-control header at cur_ptr */
7432
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7433 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7434
7435 if (p1 >= cur_end) /* no more info */
7436 continue;
7437
7438 /* p1 is at the beginning of the value */
7439 p2 = p1;
7440
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7441 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7442 p2++;
7443
7444 /* we have a complete value between p1 and p2 */
7445 if (p2 < cur_end && *p2 == '=') {
7446 /* we have something of the form no-cache="set-cookie" */
7447 if ((cur_end - p1 >= 21) &&
7448 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7449 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7450 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7451 continue;
7452 }
7453
7454 /* OK, so we know that either p2 points to the end of string or to a comma */
7455 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7456 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7457 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7458 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7459 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7460 return;
7461 }
7462
7463 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7464 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7465 continue;
7466 }
7467 }
7468}
7469
7470
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7471/*
7472 * Try to retrieve a known appsession in the URI, then the associated server.
7473 * If the server is found, it's assigned to the session.
7474 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7475void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7476{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7477 char *end_params, *first_param, *cur_param, *next_param;
7478 char separator;
7479 int value_len;
7480
7481 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7482
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7483 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7484 (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]7485 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7486 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7487
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7488 first_param = NULL;
7489 switch (mode) {
7490 case PR_O2_AS_M_PP:
7491 first_param = memchr(begin, ';', len);
7492 break;
7493 case PR_O2_AS_M_QS:
7494 first_param = memchr(begin, '?', len);
7495 break;
7496 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7497
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7498 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7499 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7500 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7501
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7502 switch (mode) {
7503 case PR_O2_AS_M_PP:
7504 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7505 end_params = (char *) begin + len;
7506 }
7507 separator = ';';
7508 break;
7509 case PR_O2_AS_M_QS:
7510 end_params = (char *) begin + len;
7511 separator = '&';
7512 break;
7513 default:
7514 /* unknown mode, shouldn't happen */
7515 return;
7516 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7517
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7518 cur_param = next_param = end_params;
7519 while (cur_param > first_param) {
7520 cur_param--;
7521 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7522 /* let's see if this is the appsession parameter */
7523 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7524 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7525 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7526 /* Cool... it's the right one */
7527 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7528 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7529 if (value_len > 0) {
7530 manage_client_side_appsession(t, cur_param, value_len);
7531 }
7532 break;
7533 }
7534 next_param = cur_param;
7535 }
7536 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7537#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7538 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7539 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7540#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7541}
7542
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7543/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7544 * 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]7545 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7546 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7547 * 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]7548 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7549 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7550 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7551 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7552int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7553{
7554 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7555 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7556 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7557 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7558
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7559 if (!uri_auth)
7560 return 0;
7561
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7562 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]7563 return 0;
7564
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7565 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7566 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7567
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7568 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7569 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7570 return 0;
7571
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7572 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7573 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7574 return 0;
7575
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7576 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7577 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7578 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7579 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7580 break;
7581 }
7582 h++;
7583 }
7584
7585 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7586 h = uri + uri_auth->uri_len;
7587 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7588 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7589 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7590 break;
7591 }
7592 h++;
7593 }
7594 }
7595
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7596 h = uri + uri_auth->uri_len;
7597 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7598 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7599 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7600 break;
7601 }
7602 h++;
7603 }
7604
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7605 h = uri + uri_auth->uri_len;
7606 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7607 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7608 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7609 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7610 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7611 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7612 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7613 si->applet.ctx.stats.st_code = i;
7614 break;
7615 }
7616 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7617 break;
7618 }
7619 h++;
7620 }
7621
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7622 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7623
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7624 return 1;
7625}
7626
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7627/*
7628 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7629 * By default it tries to report the error position as msg->err_pos. However if
7630 * this one is not set, it will then report msg->next, which is the last known
7631 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7632 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7633 */
7634void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7635 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7636 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7637{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7638 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7639 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7640
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7641 es->len = MIN(chn->buf->i, sizeof(es->buf));
7642 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7643 len1 = MIN(len1, es->len);
7644 len2 = es->len - len1; /* remaining data if buffer wraps */
7645
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7646 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7647 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7648 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7649
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7650 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7651 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7652 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7653 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7654
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7655 es->when = date; // user-visible date
7656 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7657 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7658 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7659 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7660 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7661 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7662 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7663 es->s_flags = s->flags;
7664 es->t_flags = s->txn.flags;
7665 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7666 es->b_out = chn->buf->o;
7667 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7668 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7669 es->m_clen = msg->chunk_len;
7670 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7671}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7672
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7673/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7674 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7675 * performed over the whole headers. Otherwise it must contain a valid header
7676 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7677 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7678 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7679 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7680 * -1.
7681 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7682 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7683unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7684 struct hdr_idx *idx, int occ,
7685 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7686{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7687 struct hdr_ctx local_ctx;
7688 char *ptr_hist[MAX_HDR_HISTORY];
7689 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7690 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7691 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7692
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7693 if (!ctx) {
7694 local_ctx.idx = 0;
7695 ctx = &local_ctx;
7696 }
7697
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7698 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7699 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7700 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7701 occ--;
7702 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7703 *vptr = ctx->line + ctx->val;
7704 *vlen = ctx->vlen;
7705 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7706 }
7707 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7708 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7709 }
7710
7711 /* negative occurrence, we scan all the list then walk back */
7712 if (-occ > MAX_HDR_HISTORY)
7713 return 0;
7714
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7715 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7716 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7717 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7718 len_hist[hist_ptr] = ctx->vlen;
7719 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7720 hist_ptr = 0;
7721 found++;
7722 }
7723 if (-occ > found)
7724 return 0;
7725 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7726 * find occurrence -occ, so we have to check [hist_ptr+occ].
7727 */
7728 hist_ptr += occ;
7729 if (hist_ptr >= MAX_HDR_HISTORY)
7730 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7731 *vptr = ptr_hist[hist_ptr];
7732 *vlen = len_hist[hist_ptr];
7733 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7734}
7735
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7736/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7737 * Print a debug line with a header. Always stop at the first CR or LF char,
7738 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7739 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7740 */
7741void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7742{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7743 int max;
7744 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7745 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7746 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7747
7748 for (max = 0; start + max < end; max++)
7749 if (start[max] == '\r' || start[max] == '\n')
7750 break;
7751
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7752 UBOUND(max, trash.size - trash.len - 3);
7753 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7754 trash.str[trash.len++] = '\n';
7755 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7756}
7757
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7758/*
7759 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7760 * the required fields are properly allocated and that we only need to (re)init
7761 * them. This should be used before processing any new request.
7762 */
7763void http_init_txn(struct session *s)
7764{
7765 struct http_txn *txn = &s->txn;
7766 struct proxy *fe = s->fe;
7767
7768 txn->flags = 0;
7769 txn->status = -1;
7770
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7771 global.req_count++;
7772
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7773 txn->cookie_first_date = 0;
7774 txn->cookie_last_date = 0;
7775
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7776 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7777 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7778 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7779 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7780 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7781 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7782 txn->req.chunk_len = 0LL;
7783 txn->req.body_len = 0LL;
7784 txn->rsp.chunk_len = 0LL;
7785 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7786 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7787 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7788 txn->req.chn = s->req;
7789 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7790
7791 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7792
7793 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7794 if (fe->options2 & PR_O2_REQBUG_OK)
7795 txn->req.err_pos = -1; /* let buggy requests pass */
7796
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7797 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7798 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7799
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7800 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7801 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7802
7803 if (txn->hdr_idx.v)
7804 hdr_idx_init(&txn->hdr_idx);
7805}
7806
7807/* to be used at the end of a transaction */
7808void http_end_txn(struct session *s)
7809{
7810 struct http_txn *txn = &s->txn;
7811
7812 /* these ones will have been dynamically allocated */
7813 pool_free2(pool2_requri, txn->uri);
7814 pool_free2(pool2_capture, txn->cli_cookie);
7815 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7816 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7817 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7818
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7819 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7820 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7821 txn->uri = NULL;
7822 txn->srv_cookie = NULL;
7823 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7824
7825 if (txn->req.cap) {
7826 struct cap_hdr *h;
7827 for (h = s->fe->req_cap; h; h = h->next)
7828 pool_free2(h->pool, txn->req.cap[h->index]);
7829 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7830 }
7831
7832 if (txn->rsp.cap) {
7833 struct cap_hdr *h;
7834 for (h = s->fe->rsp_cap; h; h = h->next)
7835 pool_free2(h->pool, txn->rsp.cap[h->index]);
7836 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7837 }
7838
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7839}
7840
7841/* to be used at the end of a transaction to prepare a new one */
7842void http_reset_txn(struct session *s)
7843{
7844 http_end_txn(s);
7845 http_init_txn(s);
7846
7847 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7848 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7849 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7850 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7851 /* re-init store persistence */
7852 s->store_count = 0;
7853
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7854 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7855
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7856 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7857
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7858 /* We must trim any excess data from the response buffer, because we
7859 * may have blocked an invalid response from a server that we don't
7860 * want to accidentely forward once we disable the analysers, nor do
7861 * we want those data to come along with next response. A typical
7862 * example of such data would be from a buggy server responding to
7863 * a HEAD with some data, or sending more than the advertised
7864 * content-length.
7865 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7866 if (unlikely(s->rep->buf->i))
7867 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7868
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7869 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7870 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7871
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7872 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7873 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7874
7875 s->req->rex = TICK_ETERNITY;
7876 s->req->wex = TICK_ETERNITY;
7877 s->req->analyse_exp = TICK_ETERNITY;
7878 s->rep->rex = TICK_ETERNITY;
7879 s->rep->wex = TICK_ETERNITY;
7880 s->rep->analyse_exp = TICK_ETERNITY;
7881}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7882
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7883void free_http_req_rules(struct list *r) {
7884 struct http_req_rule *tr, *pr;
7885
7886 list_for_each_entry_safe(pr, tr, r, list) {
7887 LIST_DEL(&pr->list);
7888 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7889 free(pr->http_auth.realm);
7890
7891 free(pr);
7892 }
7893}
7894
7895struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7896{
7897 struct http_req_rule *rule;
7898 int cur_arg;
7899
7900 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7901 if (!rule) {
7902 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7903 return NULL;
7904 }
7905
7906 if (!*args[0]) {
7907 goto req_error_parsing;
7908 } else if (!strcmp(args[0], "allow")) {
7909 rule->action = HTTP_REQ_ACT_ALLOW;
7910 cur_arg = 1;
7911 } else if (!strcmp(args[0], "deny")) {
7912 rule->action = HTTP_REQ_ACT_DENY;
7913 cur_arg = 1;
7914 } else if (!strcmp(args[0], "auth")) {
7915 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7916 cur_arg = 1;
7917
7918 while(*args[cur_arg]) {
7919 if (!strcmp(args[cur_arg], "realm")) {
7920 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7921 cur_arg+=2;
7922 continue;
7923 } else
7924 break;
7925 }
7926 } else {
7927req_error_parsing:
7928 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7929 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7930 return NULL;
7931 }
7932
7933 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7934 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7935 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7936
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7937 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7938 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7939 file, linenum, args[0], errmsg);
7940 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7941 return NULL;
7942 }
7943 rule->cond = cond;
7944 }
7945 else if (*args[cur_arg]) {
7946 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7947 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7948 file, linenum, args[0], args[cur_arg]);
7949 return NULL;
7950 }
7951
7952 return rule;
7953}
7954
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7955/************************************************************************/
7956/* The code below is dedicated to ACL parsing and matching */
7957/************************************************************************/
7958
7959
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7960/* This function ensures that the prerequisites for an L7 fetch are ready,
7961 * which means that a request or response is ready. If some data is missing,
7962 * 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]7963 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7964 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7965 *
7966 * The function returns :
7967 * 0 if some data is missing or if the requested data cannot be fetched
7968 * -1 if it is certain that we'll never have any HTTP message there
7969 * 1 if an HTTP message is ready
7970 */
7971static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7972acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7973 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7974{
7975 struct http_txn *txn = l7;
7976 struct http_msg *msg = &txn->req;
7977
7978 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7979 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7980 */
7981
7982 if (unlikely(!s || !txn))
7983 return 0;
7984
7985 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7986 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7987
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7988 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7989 if (unlikely(!s->req))
7990 return 0;
7991
7992 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7993 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7994 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7995 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7996 return -1;
7997 }
7998
7999 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8000 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8001 http_msg_analyzer(msg, &txn->hdr_idx);
8002
8003 /* Still no valid request ? */
8004 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8005 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8006 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8007 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8008 return -1;
8009 }
8010 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8011 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8012 return 0;
8013 }
8014
8015 /* OK we just got a valid HTTP request. We have some minor
8016 * preparation to perform so that further checks can rely
8017 * on HTTP tests.
8018 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8019 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8020 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8021 s->flags |= SN_REDIRECTABLE;
8022
8023 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8024 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8025 return -1;
8026 }
8027 }
8028
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8029 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8030 return 0; /* data might have moved and indexes changed */
8031
8032 /* otherwise everything's ready for the request */
8033 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8034 else {
8035 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8036 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8037 return 0;
8038 }
8039
8040 /* everything's OK */
8041 return 1;
8042}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8043
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8044#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8045 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]8046
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8047#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8048 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]8049
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8050
8051/* 1. Check on METHOD
8052 * We use the pre-parsed method if it is known, and store its number as an
8053 * integer. If it is unknown, we use the pointer and the length.
8054 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8055static 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]8056{
8057 int len, meth;
8058
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8059 len = strlen(*text);
8060 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8061
8062 pattern->val.i = meth;
8063 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8064 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8065 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8066 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8067 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8068 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8069 pattern->len = len;
8070 }
8071 return 1;
8072}
8073
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8074/* This function fetches the method of current HTTP request and stores
8075 * it in the global pattern struct as a chunk. There are two possibilities :
8076 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8077 * in <len> and <ptr> is NULL ;
8078 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8079 * <len> to its length.
8080 * This is intended to be used with acl_match_meth() only.
8081 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8082static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8083acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8084 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8085{
8086 int meth;
8087 struct http_txn *txn = l7;
8088
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8089 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8090
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8091 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8092 smp->type = SMP_T_UINT;
8093 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8094 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8095 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8096 /* ensure the indexes are not affected */
8097 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8098 smp->type = SMP_T_CSTR;
8099 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8100 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8101 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8102 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8103 return 1;
8104}
8105
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8106/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8107static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8108{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8109 int icase;
8110
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8111
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8112 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8113 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8114 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8115 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8116 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8117 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8118
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8119 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8120 if (pattern->val.i != HTTP_METH_OTHER)
8121 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8122
8123 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8124 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8125 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8126
8127 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8128 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8129 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8130 return ACL_PAT_FAIL;
8131 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8132}
8133
8134/* 2. Check on Request/Status Version
8135 * We simply compare strings here.
8136 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8137static 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]8138{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8139 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8140 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8141 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8142 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8143 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8144 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8145 return 1;
8146}
8147
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8148static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8149acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8150 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8151{
8152 struct http_txn *txn = l7;
8153 char *ptr;
8154 int len;
8155
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8156 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8157
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8158 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8159 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8160
8161 while ((len-- > 0) && (*ptr++ != '/'));
8162 if (len <= 0)
8163 return 0;
8164
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8165 smp->type = SMP_T_CSTR;
8166 smp->data.str.str = ptr;
8167 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8168
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8169 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8170 return 1;
8171}
8172
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8173static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8174acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8175 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8176{
8177 struct http_txn *txn = l7;
8178 char *ptr;
8179 int len;
8180
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8181 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8182
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8183 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8184 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8185
8186 while ((len-- > 0) && (*ptr++ != '/'));
8187 if (len <= 0)
8188 return 0;
8189
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8190 smp->type = SMP_T_CSTR;
8191 smp->data.str.str = ptr;
8192 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8193
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8194 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8195 return 1;
8196}
8197
8198/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8199static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8200acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8201 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8202{
8203 struct http_txn *txn = l7;
8204 char *ptr;
8205 int len;
8206
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8207 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8208
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8209 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8210 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8211
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8212 smp->type = SMP_T_UINT;
8213 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8214 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8215 return 1;
8216}
8217
8218/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8219static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8220smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8221 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8222{
8223 struct http_txn *txn = l7;
8224
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8225 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8226
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8227 smp->type = SMP_T_CSTR;
8228 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8229 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8230 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8231 return 1;
8232}
8233
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8234static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8235smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8236 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8237{
8238 struct http_txn *txn = l7;
8239
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8240 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8241
8242 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8243 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8244 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8245 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8246 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8247 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8248
8249 /*
8250 * If we are parsing url in frontend space, we prepare backend stage
8251 * to not parse again the same url ! optimization lazyness...
8252 */
8253 if (px->options & PR_O_HTTP_PROXY)
8254 l4->flags |= SN_ADDR_SET;
8255
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8256 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8257 return 1;
8258}
8259
8260static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8261smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8262 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8263{
8264 struct http_txn *txn = l7;
8265
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8266 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8267
8268 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8269 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]8270 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8271 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]8272
8273 if (px->options & PR_O_HTTP_PROXY)
8274 l4->flags |= SN_ADDR_SET;
8275
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8276 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8277 return 1;
8278}
8279
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8280/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8281 * Accepts an optional argument of type string containing the header field name,
8282 * and an optional argument of type signed or unsigned integer to request an
8283 * explicit occurrence of the header. Note that in the event of a missing name,
8284 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8285 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8286static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8287smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8288 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8289{
8290 struct http_txn *txn = l7;
8291 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8292 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8293 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]8294 int occ = 0;
8295 const char *name_str = NULL;
8296 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8297
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8298 if (args) {
8299 if (args[0].type != ARGT_STR)
8300 return 0;
8301 name_str = args[0].data.str.str;
8302 name_len = args[0].data.str.len;
8303
8304 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8305 occ = args[1].data.uint;
8306 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8307
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8308 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8309
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8310 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8311 /* search for header from the beginning */
8312 ctx->idx = 0;
8313
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8314 if (!occ && !(opt & SMP_OPT_ITERATE))
8315 /* no explicit occurrence and single fetch => last header by default */
8316 occ = -1;
8317
8318 if (!occ)
8319 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8320 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8321
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8322 smp->type = SMP_T_CSTR;
8323 smp->flags |= SMP_F_VOL_HDR;
8324 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]8325 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8326
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8327 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8328 return 0;
8329}
8330
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8331/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8332 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8333 */
8334static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8335smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8336 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8337{
8338 struct http_txn *txn = l7;
8339 struct hdr_idx *idx = &txn->hdr_idx;
8340 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8341 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]8342 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8343
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8344 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8345 return 0;
8346
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8347 CHECK_HTTP_MESSAGE_FIRST();
8348
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8349 ctx.idx = 0;
8350 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8351 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]8352 cnt++;
8353
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8354 smp->type = SMP_T_UINT;
8355 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8356 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8357 return 1;
8358}
8359
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8360/* Fetch an HTTP header's integer value. The integer value is returned. It
8361 * takes a mandatory argument of type string and an optional one of type int
8362 * to designate a specific occurrence. It returns an unsigned integer, which
8363 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8364 */
8365static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8366smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8367 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8368{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8369 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8370
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8371 if (ret > 0) {
8372 smp->type = SMP_T_UINT;
8373 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8374 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8375
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8376 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8377}
8378
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8379/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8380 * and an optional one of type int to designate a specific occurrence.
8381 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8382 */
8383static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8384smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8385 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8386{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8387 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8388
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8389 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8390 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8391 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8392 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8393 } else {
8394 struct chunk *temp = sample_get_trash_chunk();
8395 if (smp->data.str.len < temp->size - 1) {
8396 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8397 temp->str[smp->data.str.len] = '\0';
8398 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8399 smp->type = SMP_T_IPV6;
8400 break;
8401 }
8402 }
8403 }
8404
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8405 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8406 if (!(smp->flags & SMP_F_NOT_LAST))
8407 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8408 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8409 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8410}
8411
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8412/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8413 * the first '/' after the possible hostname, and ends before the possible '?'.
8414 */
8415static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8416smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8417 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8418{
8419 struct http_txn *txn = l7;
8420 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8421
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8422 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8423
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8424 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]8425 ptr = http_get_path(txn);
8426 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8427 return 0;
8428
8429 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8430 smp->type = SMP_T_CSTR;
8431 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8432
8433 while (ptr < end && *ptr != '?')
8434 ptr++;
8435
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8436 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8437 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8438 return 1;
8439}
8440
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8441/* This produces a concatenation of the first occurrence of the Host header
8442 * followed by the path component if it begins with a slash ('/'). This means
8443 * that '*' will not be added, resulting in exactly the first Host entry.
8444 * If no Host header is found, then the path is returned as-is. The returned
8445 * value is stored in the trash so it does not need to be marked constant.
8446 */
8447static int
8448smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8449 const struct arg *args, struct sample *smp)
8450{
8451 struct http_txn *txn = l7;
8452 char *ptr, *end, *beg;
8453 struct hdr_ctx ctx;
8454
8455 CHECK_HTTP_MESSAGE_FIRST();
8456
8457 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8458 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]8459 !ctx.vlen)
8460 return smp_fetch_path(px, l4, l7, opt, args, smp);
8461
8462 /* 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]8463 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8464 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8465 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8466 smp->data.str.len = ctx.vlen;
8467
8468 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8469 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]8470 beg = http_get_path(txn);
8471 if (!beg)
8472 beg = end;
8473
8474 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8475
8476 if (beg < ptr && *beg == '/') {
8477 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8478 smp->data.str.len += ptr - beg;
8479 }
8480
8481 smp->flags = SMP_F_VOL_1ST;
8482 return 1;
8483}
8484
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8485static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8486acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8487 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8488{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8489 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8490 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8491 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8492
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8493 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8494
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8495 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8496 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8497 return 1;
8498}
8499
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8500/* return a valid test if the current request is the first one on the connection */
8501static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8502acl_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]8503 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8504{
8505 if (!s)
8506 return 0;
8507
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8508 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8509 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8510 return 1;
8511}
8512
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8513/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8514static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8515acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8516 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8517{
8518
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8519 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8520 return 0;
8521
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8522 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8523
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8524 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8525 return 0;
8526
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8527 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8528 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]8529 return 1;
8530}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8531
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8532/* Accepts exactly 1 argument of type userlist */
8533static int
8534acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8535 const struct arg *args, struct sample *smp)
8536{
8537
8538 if (!args || args->type != ARGT_USR)
8539 return 0;
8540
8541 CHECK_HTTP_MESSAGE_FIRST();
8542
8543 if (!get_http_auth(l4))
8544 return 0;
8545
8546 /* acl_match_auth() will need several information at once */
8547 smp->ctx.a[0] = args->data.usr; /* user list */
8548 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8549 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8550
8551 /* if the user does not belong to the userlist or has a wrong password,
8552 * report that it unconditionally does not match. Otherwise we return
8553 * a non-zero integer which will be ignored anyway since all the params
8554 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8555 */
8556 smp->type = SMP_T_BOOL;
8557 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8558 if (smp->data.uint)
8559 smp->type = SMP_T_UINT;
8560
8561 return 1;
8562}
8563
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8564/* Try to find the next occurrence of a cookie name in a cookie header value.
8565 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8566 * the cookie value is returned into *value and *value_l, and the function
8567 * returns a pointer to the next pointer to search from if the value was found.
8568 * Otherwise if the cookie was not found, NULL is returned and neither value
8569 * nor value_l are touched. The input <hdr> string should first point to the
8570 * header's value, and the <hdr_end> pointer must point to the first character
8571 * not part of the value. <list> must be non-zero if value may represent a list
8572 * of values (cookie headers). This makes it faster to abort parsing when no
8573 * list is expected.
8574 */
8575static char *
8576extract_cookie_value(char *hdr, const char *hdr_end,
8577 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8578 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8579{
8580 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8581 char *next;
8582
8583 /* we search at least a cookie name followed by an equal, and more
8584 * generally something like this :
8585 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8586 */
8587 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8588 /* Iterate through all cookies on this line */
8589
8590 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8591 att_beg++;
8592
8593 /* find att_end : this is the first character after the last non
8594 * space before the equal. It may be equal to hdr_end.
8595 */
8596 equal = att_end = att_beg;
8597
8598 while (equal < hdr_end) {
8599 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8600 break;
8601 if (http_is_spht[(unsigned char)*equal++])
8602 continue;
8603 att_end = equal;
8604 }
8605
8606 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8607 * is between <att_beg> and <equal>, both may be identical.
8608 */
8609
8610 /* look for end of cookie if there is an equal sign */
8611 if (equal < hdr_end && *equal == '=') {
8612 /* look for the beginning of the value */
8613 val_beg = equal + 1;
8614 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8615 val_beg++;
8616
8617 /* find the end of the value, respecting quotes */
8618 next = find_cookie_value_end(val_beg, hdr_end);
8619
8620 /* make val_end point to the first white space or delimitor after the value */
8621 val_end = next;
8622 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8623 val_end--;
8624 } else {
8625 val_beg = val_end = next = equal;
8626 }
8627
8628 /* We have nothing to do with attributes beginning with '$'. However,
8629 * they will automatically be removed if a header before them is removed,
8630 * since they're supposed to be linked together.
8631 */
8632 if (*att_beg == '$')
8633 continue;
8634
8635 /* Ignore cookies with no equal sign */
8636 if (equal == next)
8637 continue;
8638
8639 /* Now we have the cookie name between att_beg and att_end, and
8640 * its value between val_beg and val_end.
8641 */
8642
8643 if (att_end - att_beg == cookie_name_l &&
8644 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8645 /* let's return this value and indicate where to go on from */
8646 *value = val_beg;
8647 *value_l = val_end - val_beg;
8648 return next + 1;
8649 }
8650
8651 /* Set-Cookie headers only have the name in the first attr=value part */
8652 if (!list)
8653 break;
8654 }
8655
8656 return NULL;
8657}
8658
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8659/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8660 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8661 * 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]8662 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8663 * 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]8664 * Accepts exactly 1 argument of type string. If the input options indicate
8665 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8666 */
8667static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8668smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8669 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8670{
8671 struct http_txn *txn = l7;
8672 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8673 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8674 const struct http_msg *msg;
8675 const char *hdr_name;
8676 int hdr_name_len;
8677 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8678 int occ = 0;
8679 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8680
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8681 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8682 return 0;
8683
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8684 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8685
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8686 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8687 msg = &txn->req;
8688 hdr_name = "Cookie";
8689 hdr_name_len = 6;
8690 } else {
8691 msg = &txn->rsp;
8692 hdr_name = "Set-Cookie";
8693 hdr_name_len = 10;
8694 }
8695
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8696 if (!occ && !(opt & SMP_OPT_ITERATE))
8697 /* no explicit occurrence and single fetch => last cookie by default */
8698 occ = -1;
8699
8700 /* OK so basically here, either we want only one value and it's the
8701 * last one, or we want to iterate over all of them and we fetch the
8702 * next one.
8703 */
8704
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8705 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8706 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8707 /* search for the header from the beginning, we must first initialize
8708 * the search parameters.
8709 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8710 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8711 ctx->idx = 0;
8712 }
8713
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8714 smp->flags |= SMP_F_VOL_HDR;
8715
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8716 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8717 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8718 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8719 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8720 goto out;
8721
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8722 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8723 continue;
8724
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8725 smp->ctx.a[0] = ctx->line + ctx->val;
8726 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8727 }
8728
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8729 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8730 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]8731 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8732 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8733 &smp->data.str.str,
8734 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8735 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8736 found = 1;
8737 if (occ >= 0) {
8738 /* one value was returned into smp->data.str.{str,len} */
8739 smp->flags |= SMP_F_NOT_LAST;
8740 return 1;
8741 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8742 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8743 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8744 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8745 /* all cookie headers and values were scanned. If we're looking for the
8746 * last occurrence, we may return it now.
8747 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8748 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8749 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8750 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8751}
8752
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8753/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8754 * 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]8755 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8756 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8757 */
8758static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8759acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8760 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8761{
8762 struct http_txn *txn = l7;
8763 struct hdr_idx *idx = &txn->hdr_idx;
8764 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8765 const struct http_msg *msg;
8766 const char *hdr_name;
8767 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8768 int cnt;
8769 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8770 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8771
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8772 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8773 return 0;
8774
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8775 CHECK_HTTP_MESSAGE_FIRST();
8776
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8777 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8778 msg = &txn->req;
8779 hdr_name = "Cookie";
8780 hdr_name_len = 6;
8781 } else {
8782 msg = &txn->rsp;
8783 hdr_name = "Set-Cookie";
8784 hdr_name_len = 10;
8785 }
8786
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8787 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8788 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8789 ctx.idx = 0;
8790 cnt = 0;
8791
8792 while (1) {
8793 /* Note: val_beg == NULL every time we need to fetch a new header */
8794 if (!val_beg) {
8795 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8796 break;
8797
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8798 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8799 continue;
8800
8801 val_beg = ctx.line + ctx.val;
8802 val_end = val_beg + ctx.vlen;
8803 }
8804
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8805 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8806 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8807 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8808 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8809 &smp->data.str.str,
8810 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8811 cnt++;
8812 }
8813 }
8814
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8815 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8816 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8817 return 1;
8818}
8819
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8820/* Fetch an cookie's integer value. The integer value is returned. It
8821 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8822 */
8823static int
8824smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8825 const struct arg *args, struct sample *smp)
8826{
8827 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8828
8829 if (ret > 0) {
8830 smp->type = SMP_T_UINT;
8831 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8832 }
8833
8834 return ret;
8835}
8836
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8837/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8838/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8839/************************************************************************/
8840
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8841/*
8842 * Given a path string and its length, find the position of beginning of the
8843 * query string. Returns NULL if no query string is found in the path.
8844 *
8845 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8846 *
8847 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8848 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8849static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8850{
8851 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8852
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8853 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8854 return p ? p + 1 : NULL;
8855}
8856
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8857static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8858{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8859 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8860}
8861
8862/*
8863 * Given a url parameter, find the starting position of the first occurence,
8864 * or NULL if the parameter is not found.
8865 *
8866 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8867 * the function will return query_string+8.
8868 */
8869static char*
8870find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8871 char* url_param_name, size_t url_param_name_l,
8872 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8873{
8874 char *pos, *last;
8875
8876 pos = query_string;
8877 last = query_string + query_string_l - url_param_name_l - 1;
8878
8879 while (pos <= last) {
8880 if (pos[url_param_name_l] == '=') {
8881 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8882 return pos;
8883 pos += url_param_name_l + 1;
8884 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8885 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8886 pos++;
8887 pos++;
8888 }
8889 return NULL;
8890}
8891
8892/*
8893 * Given a url parameter name, returns its value and size into *value and
8894 * *value_l respectively, and returns non-zero. If the parameter is not found,
8895 * zero is returned and value/value_l are not touched.
8896 */
8897static int
8898find_url_param_value(char* path, size_t path_l,
8899 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8900 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8901{
8902 char *query_string, *qs_end;
8903 char *arg_start;
8904 char *value_start, *value_end;
8905
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8906 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8907 if (!query_string)
8908 return 0;
8909
8910 qs_end = path + path_l;
8911 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8912 url_param_name, url_param_name_l,
8913 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8914 if (!arg_start)
8915 return 0;
8916
8917 value_start = arg_start + url_param_name_l + 1;
8918 value_end = value_start;
8919
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8920 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8921 value_end++;
8922
8923 *value = value_start;
8924 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8925 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8926}
8927
8928static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8929smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8930 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8931{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8932 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8933 struct http_txn *txn = l7;
8934 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8935
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8936 if (!args || args[0].type != ARGT_STR ||
8937 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8938 return 0;
8939
8940 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8941
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8942 if (args[1].type)
8943 delim = *args[1].data.str.str;
8944
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8945 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]8946 args->data.str.str, args->data.str.len,
8947 &smp->data.str.str, &smp->data.str.len,
8948 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8949 return 0;
8950
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8951 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8952 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8953 return 1;
8954}
8955
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8956/* Return the signed integer value for the specified url parameter (see url_param
8957 * above).
8958 */
8959static int
8960smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8961 const struct arg *args, struct sample *smp)
8962{
8963 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8964
8965 if (ret > 0) {
8966 smp->type = SMP_T_UINT;
8967 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8968 }
8969
8970 return ret;
8971}
8972
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8973/* This function is used to validate the arguments passed to any "hdr" fetch
8974 * keyword. These keywords support an optional positive or negative occurrence
8975 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8976 * is assumed that the types are already the correct ones. Returns 0 on error,
8977 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8978 * error message in case of error, that the caller is responsible for freeing.
8979 * The initial location must either be freeable or NULL.
8980 */
8981static int val_hdr(struct arg *arg, char **err_msg)
8982{
8983 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8984 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8985 return 0;
8986 }
8987 return 1;
8988}
8989
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8990/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8991/* All supported ACL keywords must be declared here. */
8992/************************************************************************/
8993
8994/* Note: must not be declared <const> as its list will be overwritten.
8995 * Please take care of keeping this list alphabetically sorted.
8996 */
8997static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8998 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8999 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9000 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9001 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9002 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9003 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9004 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9005 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
9006
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9007 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9008 { "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]9009 { "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]9010 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9011 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9012 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9013 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9014 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9015 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9016 { "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]9017
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9018 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9019 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9020 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9021 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9022 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9023 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9024 { "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 },
9025 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9026 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9027 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9028 { "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]9029
9030 { "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]9031 { "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]9032 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9033
9034 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
9035
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9036 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9037 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9038 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9039 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9040 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9041 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9042 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9043 { "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]9044
9045 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9046 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9047 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
9048
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9049 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9050 { "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]9051 { "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]9052 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9053 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9054 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9055 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9056 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9057 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9058 { "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]9059
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9060 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9061 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9062 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9063 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9064 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9065 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9066 { "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 },
9067 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9068 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9069 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9070 { "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]9071
9072 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9073
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9074 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9075 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9076 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9077 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9078 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9079 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9080 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9081 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9082 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9083 { "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]9084
9085 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9086 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9087 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9088 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9089 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9090 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9091 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9092 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9093 { "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]9094 { "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]9095
9096 { NULL, NULL, NULL, NULL },
9097}};
9098
9099/************************************************************************/
9100/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9101/************************************************************************/
9102/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9103static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9104 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9105 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9106 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9107 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9108 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9109 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9110 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9111 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9112 { "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]9113 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9114}};
9115
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9116
9117__attribute__((constructor))
9118static void __http_protocol_init(void)
9119{
9120 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9121 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9122}
9123
9124
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9125/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9126 * Local variables:
9127 * c-indent-level: 8
9128 * c-basic-offset: 8
9129 * End:
9130 */