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git01.mediatek.com / haproxy / f22180f1b658106c08e83918dec64843c52d3d7e / . / src / proto_http.c
blob: 54850d7829043a854336a776bfc8783401ac2c76 [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 Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2337 txn->status = 400;
2338 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2339 msg->msg_state = HTTP_MSG_ERROR;
2340 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2341
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2342 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2343 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2344 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2345 if (s->listener->counters)
2346 s->listener->counters->failed_req++;
2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 if (!(s->flags & SN_FINST_MASK))
2349 s->flags |= SN_FINST_R;
2350 return 0;
2351 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2352
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2354 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]2355 if (!(s->flags & SN_ERR_MASK))
2356 s->flags |= SN_ERR_CLITO;
2357
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2358 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2359 goto failed_keep_alive;
2360
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2361 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2362 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2363 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]2364 session_inc_http_err_ctr(s);
2365 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2366 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2367 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2368 msg->msg_state = HTTP_MSG_ERROR;
2369 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2370
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2371 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2372 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2373 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2374 if (s->listener->counters)
2375 s->listener->counters->failed_req++;
2376
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2377 if (!(s->flags & SN_FINST_MASK))
2378 s->flags |= SN_FINST_R;
2379 return 0;
2380 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2381
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2382 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2383 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2384 if (!(s->flags & SN_ERR_MASK))
2385 s->flags |= SN_ERR_CLICL;
2386
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2387 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2388 goto failed_keep_alive;
2389
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2390 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2391 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]2392 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2393 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2394 msg->msg_state = HTTP_MSG_ERROR;
2395 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2396
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2397 session_inc_http_err_ctr(s);
2398 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2399 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2400 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2401 if (s->listener->counters)
2402 s->listener->counters->failed_req++;
2403
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2404 if (!(s->flags & SN_FINST_MASK))
2405 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2406 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2407 }
2408
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2409 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2410 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2411 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2412#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2413 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2414 /* We need more data, we have to re-enable quick-ack in case we
2415 * previously disabled it, otherwise we might cause the client
2416 * to delay next data.
2417 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2418 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]2419 }
2420#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2421
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2422 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2423 /* If the client starts to talk, let's fall back to
2424 * request timeout processing.
2425 */
2426 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2427 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2428 }
2429
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2430 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2431 if (!tick_isset(req->analyse_exp)) {
2432 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2433 (txn->flags & TX_WAIT_NEXT_RQ) &&
2434 tick_isset(s->be->timeout.httpka))
2435 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2436 else
2437 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2438 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2439
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2440 /* we're not ready yet */
2441 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2442
2443 failed_keep_alive:
2444 /* Here we process low-level errors for keep-alive requests. In
2445 * short, if the request is not the first one and it experiences
2446 * a timeout, read error or shutdown, we just silently close so
2447 * that the client can try again.
2448 */
2449 txn->status = 0;
2450 msg->msg_state = HTTP_MSG_RQBEFORE;
2451 req->analysers = 0;
2452 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2453 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2454 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2455 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2456 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2457
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2458 /* OK now we have a complete HTTP request with indexed headers. Let's
2459 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2460 * 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]2461 * 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]2462 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2463 * byte after the last LF. msg->sov points to the first byte of data.
2464 * msg->eol cannot be trusted because it may have been left uninitialized
2465 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2466 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2467
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2468 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2469 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2470
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2471 if (txn->flags & TX_WAIT_NEXT_RQ) {
2472 /* kill the pending keep-alive timeout */
2473 txn->flags &= ~TX_WAIT_NEXT_RQ;
2474 req->analyse_exp = TICK_ETERNITY;
2475 }
2476
2477
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2478 /* Maybe we found in invalid header name while we were configured not
2479 * to block on that, so we have to capture it now.
2480 */
2481 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2482 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]2483
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2484 /*
2485 * 1: identify the method
2486 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2487 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2488
2489 /* we can make use of server redirect on GET and HEAD */
2490 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2491 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2492
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2493 /*
2494 * 2: check if the URI matches the monitor_uri.
2495 * We have to do this for every request which gets in, because
2496 * the monitor-uri is defined by the frontend.
2497 */
2498 if (unlikely((s->fe->monitor_uri_len != 0) &&
2499 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2500 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2501 s->fe->monitor_uri,
2502 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2503 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2504 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2505 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2506 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2508 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2509 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2510
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2511 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2512 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2513 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]2514
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2515 ret = acl_pass(ret);
2516 if (cond->pol == ACL_COND_UNLESS)
2517 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 if (ret) {
2520 /* we fail this request, let's return 503 service unavail */
2521 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2522 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2524 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2525 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2526
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2527 /* nothing to fail, let's reply normaly */
2528 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2529 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2530 goto return_prx_cond;
2531 }
2532
2533 /*
2534 * 3: Maybe we have to copy the original REQURI for the logs ?
2535 * Note: we cannot log anymore if the request has been
2536 * classified as invalid.
2537 */
2538 if (unlikely(s->logs.logwait & LW_REQ)) {
2539 /* we have a complete HTTP request that we must log */
2540 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2541 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2542
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2543 if (urilen >= REQURI_LEN)
2544 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2545 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2547
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2548 if (!(s->logs.logwait &= ~LW_REQ))
2549 s->do_log(s);
2550 } else {
2551 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2552 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2554
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2555 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2556 s->unique_id = pool_alloc2(pool2_uniqueid);
2557 }
2558
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2560 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2561 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2562
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2563 /* ... and check if the request is HTTP/1.1 or above */
2564 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2565 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2566 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2567 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2568 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2569
2570 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2571 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]2572
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2573 /* if the frontend has "option http-use-proxy-header", we'll check if
2574 * we have what looks like a proxied connection instead of a connection,
2575 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2576 * Note that this is *not* RFC-compliant, however browsers and proxies
2577 * happen to do that despite being non-standard :-(
2578 * We consider that a request not beginning with either '/' or '*' is
2579 * a proxied connection, which covers both "scheme://location" and
2580 * CONNECT ip:port.
2581 */
2582 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2583 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2584 txn->flags |= TX_USE_PX_CONN;
2585
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2586 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2587 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2588
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2589 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2590 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2591 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2592 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2593
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2594 /* 6: determine the transfer-length.
2595 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2596 * the presence of a message-body in a REQUEST and its transfer length
2597 * must be determined that way (in order of precedence) :
2598 * 1. The presence of a message-body in a request is signaled by the
2599 * inclusion of a Content-Length or Transfer-Encoding header field
2600 * in the request's header fields. When a request message contains
2601 * both a message-body of non-zero length and a method that does
2602 * not define any semantics for that request message-body, then an
2603 * origin server SHOULD either ignore the message-body or respond
2604 * with an appropriate error message (e.g., 413). A proxy or
2605 * gateway, when presented the same request, SHOULD either forward
2606 * the request inbound with the message- body or ignore the
2607 * message-body when determining a response.
2608 *
2609 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2610 * and the "chunked" transfer-coding (Section 6.2) is used, the
2611 * transfer-length is defined by the use of this transfer-coding.
2612 * If a Transfer-Encoding header field is present and the "chunked"
2613 * transfer-coding is not present, the transfer-length is defined
2614 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2615 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2616 * 3. If a Content-Length header field is present, its decimal value in
2617 * OCTETs represents both the entity-length and the transfer-length.
2618 * If a message is received with both a Transfer-Encoding header
2619 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2620 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2621 * 4. By the server closing the connection. (Closing the connection
2622 * cannot be used to indicate the end of a request body, since that
2623 * would leave no possibility for the server to send back a response.)
2624 *
2625 * Whenever a transfer-coding is applied to a message-body, the set of
2626 * transfer-codings MUST include "chunked", unless the message indicates
2627 * it is terminated by closing the connection. When the "chunked"
2628 * transfer-coding is used, it MUST be the last transfer-coding applied
2629 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2630 */
2631
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2632 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2633 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2634 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2635 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2636 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2637 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2638 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2639 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2640 /* bad transfer-encoding (chunked followed by something else) */
2641 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2642 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2643 break;
2644 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2645 }
2646
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2647 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2648 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2649 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2650 signed long long cl;
2651
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2652 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2653 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2654 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2655 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2656
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2657 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2658 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2659 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2660 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2661
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2662 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2663 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2664 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2665 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2666
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2667 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2668 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2669 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2670 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2671
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2672 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2673 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2674 }
2675
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2676 /* bodyless requests have a known length */
2677 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2678 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2679
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2680 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2681 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2682 req->analyse_exp = TICK_ETERNITY;
2683 return 1;
2684
2685 return_bad_req:
2686 /* We centralize bad requests processing here */
2687 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2688 /* we detected a parsing error. We want to archive this request
2689 * in the dedicated proxy area for later troubleshooting.
2690 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2691 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]2692 }
2693
2694 txn->req.msg_state = HTTP_MSG_ERROR;
2695 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2696 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2697
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2698 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2699 if (s->listener->counters)
2700 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2701
2702 return_prx_cond:
2703 if (!(s->flags & SN_ERR_MASK))
2704 s->flags |= SN_ERR_PRXCOND;
2705 if (!(s->flags & SN_FINST_MASK))
2706 s->flags |= SN_FINST_R;
2707
2708 req->analysers = 0;
2709 req->analyse_exp = TICK_ETERNITY;
2710 return 0;
2711}
2712
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2713/* We reached the stats page through a POST request.
2714 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2715 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2716 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2717int 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]2718{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2719 struct proxy *px = NULL;
2720 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2721
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2722 char key[LINESIZE];
2723 int action = ST_ADM_ACTION_NONE;
2724 int reprocess = 0;
2725
2726 int total_servers = 0;
2727 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2728
2729 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2730 char *st_cur_param = NULL;
2731 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2732
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2733 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2734 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2735
2736 cur_param = next_param = end_params;
2737
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2738 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2739 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2740 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2741 return 1;
2742 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2743 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2744 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2745 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2746 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2747 }
2748
2749 *end_params = '\0';
2750
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2751 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2752
2753 /*
2754 * Parse the parameters in reverse order to only store the last value.
2755 * From the html form, the backend and the action are at the end.
2756 */
2757 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2758 char *value;
2759 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2760
2761 cur_param--;
2762 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2763 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2764 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2765 poffset = (cur_param != first_param ? 1 : 0);
2766 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2767 if ((plen > 0) && (plen <= sizeof(key))) {
2768 strncpy(key, cur_param + poffset, plen);
2769 key[plen - 1] = '\0';
2770 } else {
2771 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2772 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2773 }
2774
2775 /* Parse the value */
2776 value = key;
2777 while (*value != '\0' && *value != '=') {
2778 value++;
2779 }
2780 if (*value == '=') {
2781 /* Ok, a value is found, we can mark the end of the key */
2782 *value++ = '\0';
2783 }
2784
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2785 if (!url_decode(key) || !url_decode(value))
2786 break;
2787
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2788 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2789 if (!px && (strcmp(key, "b") == 0)) {
2790 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2791 /* the backend name is unknown or ambiguous (duplicate names) */
2792 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2793 goto out;
2794 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2795 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2796 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2797 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2798 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2799 }
2800 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2801 action = ST_ADM_ACTION_ENABLE;
2802 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2803 else if (strcmp(value, "stop") == 0) {
2804 action = ST_ADM_ACTION_STOP;
2805 }
2806 else if (strcmp(value, "start") == 0) {
2807 action = ST_ADM_ACTION_START;
2808 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2809 else if (strcmp(value, "shutdown") == 0) {
2810 action = ST_ADM_ACTION_SHUTDOWN;
2811 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2812 else {
2813 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2814 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2815 }
2816 }
2817 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2818 if (!(px && action)) {
2819 /*
2820 * Indicates that we'll need to reprocess the parameters
2821 * as soon as backend and action are known
2822 */
2823 if (!reprocess) {
2824 st_cur_param = cur_param;
2825 st_next_param = next_param;
2826 }
2827 reprocess = 1;
2828 }
2829 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2830 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2831 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2832 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2833 /* Not already in maintenance, we can change the server state */
2834 sv->state |= SRV_MAINTAIN;
2835 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2836 altered_servers++;
2837 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2838 }
2839 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2840 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2841 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2842 /* Already in maintenance, we can change the server state */
2843 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2844 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2845 altered_servers++;
2846 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2847 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2848 break;
2849 case ST_ADM_ACTION_STOP:
2850 case ST_ADM_ACTION_START:
2851 if (action == ST_ADM_ACTION_START)
2852 sv->uweight = sv->iweight;
2853 else
2854 sv->uweight = 0;
2855
2856 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2857 /* we must take care of not pushing the server to full throttle during slow starts */
2858 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2859 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2860 else
2861 sv->eweight = BE_WEIGHT_SCALE;
2862 sv->eweight *= sv->uweight;
2863 } else {
2864 sv->eweight = sv->uweight;
2865 }
2866
2867 /* static LB algorithms are a bit harder to update */
2868 if (px->lbprm.update_server_eweight)
2869 px->lbprm.update_server_eweight(sv);
2870 else if (sv->eweight) {
2871 if (px->lbprm.set_server_status_up)
2872 px->lbprm.set_server_status_up(sv);
2873 }
2874 else {
2875 if (px->lbprm.set_server_status_down)
2876 px->lbprm.set_server_status_down(sv);
2877 }
2878 altered_servers++;
2879 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2880 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2881 case ST_ADM_ACTION_SHUTDOWN:
2882 if (px->state != PR_STSTOPPED) {
2883 struct session *sess, *sess_bck;
2884
2885 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2886 if (sess->srv_conn == sv)
2887 session_shutdown(sess, SN_ERR_KILLED);
2888
2889 altered_servers++;
2890 total_servers++;
2891 }
2892 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2893 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2894 } else {
2895 /* the server name is unknown or ambiguous (duplicate names) */
2896 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2897 }
2898 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2899 if (reprocess && px && action) {
2900 /* Now, we know the backend and the action chosen by the user.
2901 * We can safely restart from the first server parameter
2902 * to reprocess them
2903 */
2904 cur_param = st_cur_param;
2905 next_param = st_next_param;
2906 reprocess = 0;
2907 goto reprocess_servers;
2908 }
2909
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2910 next_param = cur_param;
2911 }
2912 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2913
2914 if (total_servers == 0) {
2915 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2916 }
2917 else if (altered_servers == 0) {
2918 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2919 }
2920 else if (altered_servers == total_servers) {
2921 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2922 }
2923 else {
2924 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2925 }
2926 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2927 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2928}
2929
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2930/* returns a pointer to the first rule which forbids access (deny or http_auth),
2931 * or NULL if everything's OK.
2932 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2933static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2934http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2935{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2936 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2937
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2938 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2939 int ret = 1;
2940
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2941 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2942 continue;
2943
2944 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2945 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2946 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]2947 ret = acl_pass(ret);
2948
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2949 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2950 ret = !ret;
2951 }
2952
2953 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2954 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2955 return NULL; /* no problem */
2956 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2957 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2958 }
2959 }
2960 return NULL;
2961}
2962
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2963/* This stream analyser runs all HTTP request processing which is common to
2964 * frontends and backends, which means blocking ACLs, filters, connection-close,
2965 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2966 * 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]2967 * either needs more data or wants to immediately abort the request (eg: deny,
2968 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2969 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2970int 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]2971{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2972 struct http_txn *txn = &s->txn;
2973 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2974 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2975 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2976 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2977 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2978 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2979
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2980 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2981 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2982 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2983 return 0;
2984 }
2985
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2986 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2987 req->analyse_exp = TICK_ETERNITY;
2988
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2989 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]2990 now_ms, __FUNCTION__,
2991 s,
2992 req,
2993 req->rex, req->wex,
2994 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2995 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2996 req->analysers);
2997
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2998 /* first check whether we have some ACLs set to block this request */
2999 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3000 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]3001
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3002 ret = acl_pass(ret);
3003 if (cond->pol == ACL_COND_UNLESS)
3004 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3005
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3006 if (ret) {
3007 txn->status = 403;
3008 /* let's log the request time */
3009 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3010 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3011 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3012 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3013 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3014 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3015
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3016 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3017 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]3018
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3019 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3020 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3021 do_stats = stats_check_uri(s->rep->prod, txn, px);
3022 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3023 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]3024 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3025 else
3026 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3027
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3028 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3029 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]3030 txn->status = 403;
3031 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3032 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3033 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3034 s->fe->fe_counters.denied_req++;
3035 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3036 s->be->be_counters.denied_req++;
3037 if (s->listener->counters)
3038 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3039 goto return_prx_cond;
3040 }
3041
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3042 /* try headers filters */
3043 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3044 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3045 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3046
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3047 /* has the request been denied ? */
3048 if (txn->flags & TX_CLDENY) {
3049 /* no need to go further */
3050 txn->status = 403;
3051 /* let's log the request time */
3052 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3053 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3054 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3055 goto return_prx_cond;
3056 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3057
3058 /* When a connection is tarpitted, we use the tarpit timeout,
3059 * which may be the same as the connect timeout if unspecified.
3060 * If unset, then set it to zero because we really want it to
3061 * eventually expire. We build the tarpit as an analyser.
3062 */
3063 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3064 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3065 /* wipe the request out so that we can drop the connection early
3066 * if the client closes first.
3067 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3068 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3069 req->analysers = 0; /* remove switching rules etc... */
3070 req->analysers |= AN_REQ_HTTP_TARPIT;
3071 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3072 if (!req->analyse_exp)
3073 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3074 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3075 return 1;
3076 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3077 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3078
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3079 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3080 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3081 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3082 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3083 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3084 * avoid to redo the same work if FE and BE have the same settings (common).
3085 * The method consists in checking if options changed between the two calls
3086 * (implying that either one is non-null, or one of them is non-null and we
3087 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3088 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3089
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3090 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3091 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3092 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3093 (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]3094 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3095
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3096 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3097 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3098 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3099 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3100 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3101 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3102 tmp = TX_CON_WANT_CLO;
3103
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3104 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3105 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3106
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3107 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3108 /* parse the Connection header and possibly clean it */
3109 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3110 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3111 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3112 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3113 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3114 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3115 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3116 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3117 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3118
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3119 /* check if client or config asks for explicit close in KAL/SCL */
3120 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3121 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3122 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3123 (!(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]3124 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3125 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3126 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3127 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3128 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3129
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3130 /* we can be blocked here because the request needs to be authenticated,
3131 * either to pass or to access stats.
3132 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3133 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]3134 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3135
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3136 if (!realm)
3137 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3138
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3139 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]3140 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3141 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3142 /* on 401 we still count one error, because normal browsing
3143 * won't significantly increase the counter but brute force
3144 * attempts will.
3145 */
3146 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3147 goto return_prx_cond;
3148 }
3149
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3150 /* add request headers from the rule sets in the same order */
3151 list_for_each_entry(wl, &px->req_add, list) {
3152 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3153 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]3154 ret = acl_pass(ret);
3155 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3156 ret = !ret;
3157 if (!ret)
3158 continue;
3159 }
3160
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3161 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3162 goto return_bad_req;
3163 }
3164
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3165 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3166 struct stats_admin_rule *stats_admin_rule;
3167
3168 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3169 * FIXME!!! that one is rather dangerous, we want to
3170 * make it follow standard rules (eg: clear req->analysers).
3171 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3172
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3173 /* now check whether we have some admin rules for this request */
3174 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3175 int ret = 1;
3176
3177 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3178 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]3179 ret = acl_pass(ret);
3180 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3181 ret = !ret;
3182 }
3183
3184 if (ret) {
3185 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3186 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3187 break;
3188 }
3189 }
3190
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3191 /* Was the status page requested with a POST ? */
3192 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3193 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3194 if (msg->msg_state < HTTP_MSG_100_SENT) {
3195 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3196 * send an HTTP/1.1 100 Continue intermediate response.
3197 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3198 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3199 struct hdr_ctx ctx;
3200 ctx.idx = 0;
3201 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3202 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3203 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3204 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3205 }
3206 }
3207 msg->msg_state = HTTP_MSG_100_SENT;
3208 s->logs.tv_request = now; /* update the request timer to reflect full request */
3209 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3210 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3211 /* we need more data */
3212 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3213 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3214 return 0;
3215 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3216 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3217 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3218 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3219 }
3220
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3221 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3222 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3223 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]3224 s->target = s->rep->prod->conn->target; // for logging only
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3225 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3226 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3227 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3228 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3229 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3230
3231 return 0;
3232
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3233 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3234
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3235 /* check whether we have some ACLs set to redirect this request */
3236 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3237 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3238
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3239 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3240 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]3241 ret = acl_pass(ret);
3242 if (rule->cond->pol == ACL_COND_UNLESS)
3243 ret = !ret;
3244 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3245
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3246 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3247 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3248
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3249 /* build redirect message */
3250 switch(rule->code) {
3251 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3252 msg_fmt = HTTP_303;
3253 break;
3254 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3255 msg_fmt = HTTP_301;
3256 break;
3257 case 302:
3258 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3259 msg_fmt = HTTP_302;
3260 break;
3261 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3262
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3263 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3264 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3265
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3266 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3267 case REDIRECT_TYPE_SCHEME: {
3268 const char *path;
3269 const char *host;
3270 struct hdr_ctx ctx;
3271 int pathlen;
3272 int hostlen;
3273
3274 host = "";
3275 hostlen = 0;
3276 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3277 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]3278 host = ctx.line + ctx.val;
3279 hostlen = ctx.vlen;
3280 }
3281
3282 path = http_get_path(txn);
3283 /* build message using path */
3284 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3285 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]3286 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3287 int qs = 0;
3288 while (qs < pathlen) {
3289 if (path[qs] == '?') {
3290 pathlen = qs;
3291 break;
3292 }
3293 qs++;
3294 }
3295 }
3296 } else {
3297 path = "/";
3298 pathlen = 1;
3299 }
3300
3301 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3302 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3303 goto return_bad_req;
3304
3305 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3306 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3307 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3308
3309 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3310 memcpy(trash.str + trash.len, "://", 3);
3311 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3312
3313 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3314 memcpy(trash.str + trash.len, host, hostlen);
3315 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3316
3317 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3318 memcpy(trash.str + trash.len, path, pathlen);
3319 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3320
3321 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3322 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3323 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3324 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3325 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3326 trash.str[trash.len] = '/';
3327 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3328 }
3329
3330 break;
3331 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3332 case REDIRECT_TYPE_PREFIX: {
3333 const char *path;
3334 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3335
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3336 path = http_get_path(txn);
3337 /* build message using path */
3338 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3339 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]3340 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3341 int qs = 0;
3342 while (qs < pathlen) {
3343 if (path[qs] == '?') {
3344 pathlen = qs;
3345 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3346 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3347 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3348 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3349 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3350 } else {
3351 path = "/";
3352 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3353 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3354
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3355 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3356 goto return_bad_req;
3357
3358 /* add prefix. Note that if prefix == "/", we don't want to
3359 * add anything, otherwise it makes it hard for the user to
3360 * configure a self-redirection.
3361 */
3362 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3363 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3364 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3365 }
3366
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3367 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3368 memcpy(trash.str + trash.len, path, pathlen);
3369 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3370
3371 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3372 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3373 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3374 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3375 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3376 trash.str[trash.len] = '/';
3377 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3378 }
3379
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3380 break;
3381 }
3382 case REDIRECT_TYPE_LOCATION:
3383 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3384 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3385 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3386
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3387 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3388 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3389 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3390 break;
3391 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3392
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3393 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3394 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3395 trash.len += 14;
3396 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3397 trash.len += rule->cookie_len;
3398 memcpy(trash.str + trash.len, "\r\n", 2);
3399 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3400 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3401
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3402 /* add end of headers and the keep-alive/close status.
3403 * We may choose to set keep-alive if the Location begins
3404 * with a slash, because the client will come back to the
3405 * same server.
3406 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3407 txn->status = rule->code;
3408 /* let's log the request time */
3409 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3410
3411 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3412 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3413 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3414 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3415 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3416 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3417 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3418 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3419 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3420 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3421 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3422 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3423 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3424 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3425 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3426 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3427 trash.len += 4;
3428 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3429 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3430 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3431 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3432 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3433 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3434 txn->req.msg_state = HTTP_MSG_CLOSED;
3435 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3436 break;
3437 } else {
3438 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3439 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3440 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3441 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3442 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3443 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3444 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3445 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3446 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3447 goto return_prx_cond;
3448 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3449 }
3450 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3451
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3452 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3453 * If this happens, then the data will not come immediately, so we must
3454 * send all what we have without waiting. Note that due to the small gain
3455 * 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]3456 * 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]3457 * itself once used.
3458 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3459 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3460
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3461 /* that's OK for us now, let's move on to next analysers */
3462 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3463
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3464 return_bad_req:
3465 /* We centralize bad requests processing here */
3466 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3467 /* we detected a parsing error. We want to archive this request
3468 * in the dedicated proxy area for later troubleshooting.
3469 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3470 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]3471 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3472
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3473 txn->req.msg_state = HTTP_MSG_ERROR;
3474 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3475 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3476
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3477 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3478 if (s->listener->counters)
3479 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3480
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3481 return_prx_cond:
3482 if (!(s->flags & SN_ERR_MASK))
3483 s->flags |= SN_ERR_PRXCOND;
3484 if (!(s->flags & SN_FINST_MASK))
3485 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3486
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3487 req->analysers = 0;
3488 req->analyse_exp = TICK_ETERNITY;
3489 return 0;
3490}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3491
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3492/* This function performs all the processing enabled for the current request.
3493 * It returns 1 if the processing can continue on next analysers, or zero if it
3494 * needs more data, encounters an error, or wants to immediately abort the
3495 * request. It relies on buffers flags, and updates s->req->analysers.
3496 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3497int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3498{
3499 struct http_txn *txn = &s->txn;
3500 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3501
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3502 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3503 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3504 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3505 return 0;
3506 }
3507
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3508 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]3509 now_ms, __FUNCTION__,
3510 s,
3511 req,
3512 req->rex, req->wex,
3513 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3514 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3515 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3516
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3517 if (s->fe->comp || s->be->comp)
3518 select_compression_request_header(s, req->buf);
3519
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3520 /*
3521 * Right now, we know that we have processed the entire headers
3522 * and that unwanted requests have been filtered out. We can do
3523 * whatever we want with the remaining request. Also, now we
3524 * may have separate values for ->fe, ->be.
3525 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3526
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3527 /*
3528 * If HTTP PROXY is set we simply get remote server address
3529 * parsing incoming request.
3530 */
3531 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3532 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]3533 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3534
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3535 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3536 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3537 * Note that doing so might move headers in the request, but
3538 * the fields will stay coherent and the URI will not move.
3539 * This should only be performed in the backend.
3540 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3541 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3542 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3543 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3544
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3545 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3546 * 8: the appsession cookie was looked up very early in 1.2,
3547 * so let's do the same now.
3548 */
3549
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3550 /* It needs to look into the URI unless persistence must be ignored */
3551 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3552 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]3553 }
3554
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3555 /* add unique-id if "header-unique-id" is specified */
3556
3557 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3558 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3559
3560 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3561 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3562 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3563 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3564 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]3565 goto return_bad_req;
3566 }
3567
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3568 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3569 * 9: add X-Forwarded-For if either the frontend or the backend
3570 * asks for it.
3571 */
3572 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3573 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3574 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3575 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3576 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]3577 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3578 /* The header is set to be added only if none is present
3579 * and we found it, so don't do anything.
3580 */
3581 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3582 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3583 /* Add an X-Forwarded-For header unless the source IP is
3584 * in the 'except' network range.
3585 */
3586 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3587 (((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]3588 != s->fe->except_net.s_addr) &&
3589 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3590 (((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]3591 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3592 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3593 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3594 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3595
3596 /* Note: we rely on the backend to get the header name to be used for
3597 * x-forwarded-for, because the header is really meant for the backends.
3598 * However, if the backend did not specify any option, we have to rely
3599 * on the frontend's header name.
3600 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3601 if (s->be->fwdfor_hdr_len) {
3602 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3603 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3604 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3605 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3606 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3607 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3608 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]3609
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3610 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]3611 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3612 }
3613 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3614 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3615 /* FIXME: for the sake of completeness, we should also support
3616 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3617 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3618 int len;
3619 char pn[INET6_ADDRSTRLEN];
3620 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3621 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3622 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3623
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3624 /* Note: we rely on the backend to get the header name to be used for
3625 * x-forwarded-for, because the header is really meant for the backends.
3626 * However, if the backend did not specify any option, we have to rely
3627 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3628 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3629 if (s->be->fwdfor_hdr_len) {
3630 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3631 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3632 } else {
3633 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3634 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3635 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3636 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3637
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3638 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]3639 goto return_bad_req;
3640 }
3641 }
3642
3643 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3644 * 10: add X-Original-To if either the frontend or the backend
3645 * asks for it.
3646 */
3647 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3648
3649 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3650 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3651 /* Add an X-Original-To header unless the destination IP is
3652 * in the 'except' network range.
3653 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3654 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3655
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3656 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3657 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3658 (((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]3659 != s->fe->except_to.s_addr) &&
3660 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3661 (((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]3662 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3663 int len;
3664 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3665 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3666
3667 /* Note: we rely on the backend to get the header name to be used for
3668 * x-original-to, because the header is really meant for the backends.
3669 * However, if the backend did not specify any option, we have to rely
3670 * on the frontend's header name.
3671 */
3672 if (s->be->orgto_hdr_len) {
3673 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3674 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3675 } else {
3676 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3677 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3678 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3679 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]3680
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3681 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]3682 goto return_bad_req;
3683 }
3684 }
3685 }
3686
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3687 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3688 * If an "Upgrade" token is found, the header is left untouched in order not to have
3689 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3690 * "Upgrade" is present in the Connection header.
3691 */
3692 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3693 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3694 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3695 unsigned int want_flags = 0;
3696
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3697 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3698 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3699 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3700 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3701 want_flags |= TX_CON_CLO_SET;
3702 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3703 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3704 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3705 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3706 want_flags |= TX_CON_KAL_SET;
3707 }
3708
3709 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3710 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3711 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3712
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3713
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3714 /* If we have no server assigned yet and we're balancing on url_param
3715 * with a POST request, we may be interested in checking the body for
3716 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3717 */
3718 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3719 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3720 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3721 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3722 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3723 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3724 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3725
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3726 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3727 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3728#ifdef TCP_QUICKACK
3729 /* We expect some data from the client. Unless we know for sure
3730 * we already have a full request, we have to re-enable quick-ack
3731 * in case we previously disabled it, otherwise we might cause
3732 * the client to delay further data.
3733 */
3734 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3735 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3736 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3737 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]3738#endif
3739 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3740
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3741 /*************************************************************
3742 * OK, that's finished for the headers. We have done what we *
3743 * could. Let's switch to the DATA state. *
3744 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3745 req->analyse_exp = TICK_ETERNITY;
3746 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3747
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3748 /* if the server closes the connection, we want to immediately react
3749 * and close the socket to save packets and syscalls.
3750 */
3751 req->cons->flags |= SI_FL_NOHALF;
3752
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3753 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3754 /* OK let's go on with the BODY now */
3755 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3756
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3757 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3758 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3759 /* we detected a parsing error. We want to archive this request
3760 * in the dedicated proxy area for later troubleshooting.
3761 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3762 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]3763 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3764
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3765 txn->req.msg_state = HTTP_MSG_ERROR;
3766 txn->status = 400;
3767 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3768 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3769
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3770 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3771 if (s->listener->counters)
3772 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3773
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3774 if (!(s->flags & SN_ERR_MASK))
3775 s->flags |= SN_ERR_PRXCOND;
3776 if (!(s->flags & SN_FINST_MASK))
3777 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3778 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3779}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3780
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3781/* This function is an analyser which processes the HTTP tarpit. It always
3782 * returns zero, at the beginning because it prevents any other processing
3783 * from occurring, and at the end because it terminates the request.
3784 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3785int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3786{
3787 struct http_txn *txn = &s->txn;
3788
3789 /* This connection is being tarpitted. The CLIENT side has
3790 * already set the connect expiration date to the right
3791 * timeout. We just have to check that the client is still
3792 * there and that the timeout has not expired.
3793 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3794 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3795 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3796 !tick_is_expired(req->analyse_exp, now_ms))
3797 return 0;
3798
3799 /* We will set the queue timer to the time spent, just for
3800 * logging purposes. We fake a 500 server error, so that the
3801 * attacker will not suspect his connection has been tarpitted.
3802 * It will not cause trouble to the logs because we can exclude
3803 * the tarpitted connections by filtering on the 'PT' status flags.
3804 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3805 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3806
3807 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3808 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3809 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3810
3811 req->analysers = 0;
3812 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3813
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3814 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3815 if (s->listener->counters)
3816 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3817
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3818 if (!(s->flags & SN_ERR_MASK))
3819 s->flags |= SN_ERR_PRXCOND;
3820 if (!(s->flags & SN_FINST_MASK))
3821 s->flags |= SN_FINST_T;
3822 return 0;
3823}
3824
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3825/* This function is an analyser which processes the HTTP request body. It looks
3826 * for parameters to be used for the load balancing algorithm (url_param). It
3827 * must only be called after the standard HTTP request processing has occurred,
3828 * because it expects the request to be parsed. It returns zero if it needs to
3829 * read more data, or 1 once it has completed its analysis.
3830 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3831int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3832{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3833 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3834 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3835 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3836
3837 /* We have to parse the HTTP request body to find any required data.
3838 * "balance url_param check_post" should have been the only way to get
3839 * into this. We were brought here after HTTP header analysis, so all
3840 * related structures are ready.
3841 */
3842
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3843 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3844 goto missing_data;
3845
3846 if (msg->msg_state < HTTP_MSG_100_SENT) {
3847 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3848 * send an HTTP/1.1 100 Continue intermediate response.
3849 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3850 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3851 struct hdr_ctx ctx;
3852 ctx.idx = 0;
3853 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3854 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3855 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3856 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3857 }
3858 }
3859 msg->msg_state = HTTP_MSG_100_SENT;
3860 }
3861
3862 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3863 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3864 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3865 * is still null. We must save the body in msg->next because it
3866 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3867 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3868 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3869
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3870 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3871 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3872 else
3873 msg->msg_state = HTTP_MSG_DATA;
3874 }
3875
3876 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3877 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3878 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3879 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3880 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3881 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3882
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3883 if (!ret)
3884 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3885 else if (ret < 0) {
3886 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3887 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3888 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3889 }
3890
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3891 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3892 * We have the first data byte is in msg->sov. We're waiting for at
3893 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3894 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3895
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3896 if (msg->body_len < limit)
3897 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3898
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3899 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3900 goto http_end;
3901
3902 missing_data:
3903 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3904 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3905 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3906 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3907 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3908
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3909 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3910 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3911 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3912
3913 if (!(s->flags & SN_ERR_MASK))
3914 s->flags |= SN_ERR_CLITO;
3915 if (!(s->flags & SN_FINST_MASK))
3916 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3917 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3918 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3919
3920 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3921 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]3922 /* Not enough data. We'll re-use the http-request
3923 * timeout here. Ideally, we should set the timeout
3924 * relative to the accept() date. We just set the
3925 * request timeout once at the beginning of the
3926 * request.
3927 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3928 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3929 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3930 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3931 return 0;
3932 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3933
3934 http_end:
3935 /* The situation will not evolve, so let's give up on the analysis. */
3936 s->logs.tv_request = now; /* update the request timer to reflect full request */
3937 req->analysers &= ~an_bit;
3938 req->analyse_exp = TICK_ETERNITY;
3939 return 1;
3940
3941 return_bad_req: /* let's centralize all bad requests */
3942 txn->req.msg_state = HTTP_MSG_ERROR;
3943 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3944 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3945
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3946 if (!(s->flags & SN_ERR_MASK))
3947 s->flags |= SN_ERR_PRXCOND;
3948 if (!(s->flags & SN_FINST_MASK))
3949 s->flags |= SN_FINST_R;
3950
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3951 return_err_msg:
3952 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3953 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3954 if (s->listener->counters)
3955 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3956 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3957}
3958
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3959/* send a server's name with an outgoing request over an established connection.
3960 * Note: this function is designed to be called once the request has been scheduled
3961 * for being forwarded. This is the reason why it rewinds the buffer before
3962 * proceeding.
3963 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3964int 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]3965
3966 struct hdr_ctx ctx;
3967
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3968 char *hdr_name = be->server_id_hdr_name;
3969 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3970 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3971 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3972 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3973
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3974 ctx.idx = 0;
3975
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3976 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3977 if (old_o) {
3978 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3979 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3980 }
3981
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3982 old_i = chn->buf->i;
3983 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]3984 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3985 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3986 }
3987
3988 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3989 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3990 memcpy(hdr_val, hdr_name, hdr_name_len);
3991 hdr_val += hdr_name_len;
3992 *hdr_val++ = ':';
3993 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3994 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
3995 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]3996
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3997 if (old_o) {
3998 /* If this was a forwarded request, we must readjust the amount of
3999 * data to be forwarded in order to take into account the size
4000 * variations.
4001 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4002 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4003 }
4004
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4005 return 0;
4006}
4007
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4008/* Terminate current transaction and prepare a new one. This is very tricky
4009 * right now but it works.
4010 */
4011void http_end_txn_clean_session(struct session *s)
4012{
4013 /* FIXME: We need a more portable way of releasing a backend's and a
4014 * server's connections. We need a safer way to reinitialize buffer
4015 * flags. We also need a more accurate method for computing per-request
4016 * data.
4017 */
4018 http_silent_debug(__LINE__, s);
4019
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4020 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4021 si_shutr(s->req->cons);
4022 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4023
4024 http_silent_debug(__LINE__, s);
4025
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4026 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4027 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4028 if (unlikely(s->srv_conn))
4029 sess_change_server(s, NULL);
4030 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4031
4032 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4033 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4034 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4035
4036 if (s->txn.status) {
4037 int n;
4038
4039 n = s->txn.status / 100;
4040 if (n < 1 || n > 5)
4041 n = 0;
4042
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4043 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4044 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4045 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4046 s->fe->fe_counters.p.http.comp_rsp++;
4047 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4048 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4049 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4050 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4051 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4052 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4053 s->be->be_counters.p.http.comp_rsp++;
4054 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4055 }
4056
4057 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4058 s->logs.bytes_in -= s->req->buf->i;
4059 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4060
4061 /* let's do a final log if we need it */
4062 if (s->logs.logwait &&
4063 !(s->flags & SN_MONITOR) &&
4064 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4065 s->do_log(s);
4066 }
4067
4068 s->logs.accept_date = date; /* user-visible date for logging */
4069 s->logs.tv_accept = now; /* corrected date for internal use */
4070 tv_zero(&s->logs.tv_request);
4071 s->logs.t_queue = -1;
4072 s->logs.t_connect = -1;
4073 s->logs.t_data = -1;
4074 s->logs.t_close = 0;
4075 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4076 s->logs.srv_queue_size = 0; /* we will get this number soon */
4077
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4078 s->logs.bytes_in = s->req->total = s->req->buf->i;
4079 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4080
4081 if (s->pend_pos)
4082 pendconn_free(s->pend_pos);
4083
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4084 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4085 if (s->flags & SN_CURR_SESS) {
4086 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4087 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4088 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4089 if (may_dequeue_tasks(objt_server(s->target), s->be))
4090 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4091 }
4092
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4093 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4094
4095 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4096 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4097 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4098 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4099 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4100 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4101 s->req->cons->err_loc = NULL;
4102 s->req->cons->exp = TICK_ETERNITY;
4103 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4104 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4105 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]4106 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]4107 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4108
4109 if (s->flags & SN_COMP_READY)
4110 s->comp_algo->end(&s->comp_ctx);
4111 s->comp_algo = NULL;
4112 s->flags &= ~SN_COMP_READY;
4113
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4114 s->txn.meth = 0;
4115 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4116 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4117 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4118 s->req->cons->flags |= SI_FL_INDEP_STR;
4119
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4120 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4121 s->req->flags |= CF_NEVER_WAIT;
4122 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4123 }
4124
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4125 /* if the request buffer is not empty, it means we're
4126 * about to process another request, so send pending
4127 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4128 * Just don't do this if the buffer is close to be full,
4129 * because the request will wait for it to flush a little
4130 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4131 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4132 if (s->req->buf->i) {
4133 if (s->rep->buf->o &&
4134 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4135 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]4136 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4137 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4138
4139 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4140 channel_auto_read(s->req);
4141 channel_auto_close(s->req);
4142 channel_auto_read(s->rep);
4143 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4144
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4145 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4146 s->rep->analysers = 0;
4147
4148 http_silent_debug(__LINE__, s);
4149}
4150
4151
4152/* This function updates the request state machine according to the response
4153 * state machine and buffer flags. It returns 1 if it changes anything (flag
4154 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4155 * it is only used to find when a request/response couple is complete. Both
4156 * this function and its equivalent should loop until both return zero. It
4157 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4158 */
4159int http_sync_req_state(struct session *s)
4160{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4161 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4162 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4163 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4164 unsigned int old_state = txn->req.msg_state;
4165
4166 http_silent_debug(__LINE__, s);
4167 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4168 return 0;
4169
4170 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4171 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4172 * We can shut the read side unless we want to abort_on_close,
4173 * or we have a POST request. The issue with POST requests is
4174 * that some browsers still send a CRLF after the request, and
4175 * this CRLF must be read so that it does not remain in the kernel
4176 * buffers, otherwise a close could cause an RST on some systems
4177 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4178 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4179 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4180 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4181
4182 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4183 goto wait_other_side;
4184
4185 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4186 /* The server has not finished to respond, so we
4187 * don't want to move in order not to upset it.
4188 */
4189 goto wait_other_side;
4190 }
4191
4192 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4193 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4194 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4195 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4196 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4197 goto wait_other_side;
4198 }
4199
4200 /* When we get here, it means that both the request and the
4201 * response have finished receiving. Depending on the connection
4202 * mode, we'll have to wait for the last bytes to leave in either
4203 * direction, and sometimes for a close to be effective.
4204 */
4205
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4206 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4207 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4208 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4209 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4210 }
4211 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4212 /* Option forceclose is set, or either side wants to close,
4213 * let's enforce it now that we're not expecting any new
4214 * data to come. The caller knows the session is complete
4215 * once both states are CLOSED.
4216 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4217 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4218 channel_shutr_now(chn);
4219 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4220 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4221 }
4222 else {
4223 /* The last possible modes are keep-alive and tunnel. Since tunnel
4224 * mode does not set the body analyser, we can't reach this place
4225 * in tunnel mode, so we're left with keep-alive only.
4226 * This mode is currently not implemented, we switch to tunnel mode.
4227 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4228 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4229 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4230 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4231 }
4232
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4233 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4234 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4235 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4236
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4237 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4238 txn->req.msg_state = HTTP_MSG_CLOSING;
4239 goto http_msg_closing;
4240 }
4241 else {
4242 txn->req.msg_state = HTTP_MSG_CLOSED;
4243 goto http_msg_closed;
4244 }
4245 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4246 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4247 }
4248
4249 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4250 http_msg_closing:
4251 /* nothing else to forward, just waiting for the output buffer
4252 * to be empty and for the shutw_now to take effect.
4253 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4254 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4255 txn->req.msg_state = HTTP_MSG_CLOSED;
4256 goto http_msg_closed;
4257 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4258 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4259 txn->req.msg_state = HTTP_MSG_ERROR;
4260 goto wait_other_side;
4261 }
4262 }
4263
4264 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4265 http_msg_closed:
4266 goto wait_other_side;
4267 }
4268
4269 wait_other_side:
4270 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4271 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4272}
4273
4274
4275/* This function updates the response state machine according to the request
4276 * state machine and buffer flags. It returns 1 if it changes anything (flag
4277 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4278 * it is only used to find when a request/response couple is complete. Both
4279 * this function and its equivalent should loop until both return zero. It
4280 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4281 */
4282int http_sync_res_state(struct session *s)
4283{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4284 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4285 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4286 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4287 unsigned int old_state = txn->rsp.msg_state;
4288
4289 http_silent_debug(__LINE__, s);
4290 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4291 return 0;
4292
4293 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4294 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4295 * still monitor the server connection for a possible close
4296 * while the request is being uploaded, so we don't disable
4297 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4298 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4299 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4300
4301 if (txn->req.msg_state == HTTP_MSG_ERROR)
4302 goto wait_other_side;
4303
4304 if (txn->req.msg_state < HTTP_MSG_DONE) {
4305 /* The client seems to still be sending data, probably
4306 * because we got an error response during an upload.
4307 * We have the choice of either breaking the connection
4308 * or letting it pass through. Let's do the later.
4309 */
4310 goto wait_other_side;
4311 }
4312
4313 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4314 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4315 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4316 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4317 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4318 goto wait_other_side;
4319 }
4320
4321 /* When we get here, it means that both the request and the
4322 * response have finished receiving. Depending on the connection
4323 * mode, we'll have to wait for the last bytes to leave in either
4324 * direction, and sometimes for a close to be effective.
4325 */
4326
4327 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4328 /* Server-close mode : shut read and wait for the request
4329 * side to close its output buffer. The caller will detect
4330 * when we're in DONE and the other is in CLOSED and will
4331 * catch that for the final cleanup.
4332 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4333 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4334 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4335 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4336 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4337 /* Option forceclose is set, or either side wants to close,
4338 * let's enforce it now that we're not expecting any new
4339 * data to come. The caller knows the session is complete
4340 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4341 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4342 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4343 channel_shutr_now(chn);
4344 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4345 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4346 }
4347 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4348 /* The last possible modes are keep-alive and tunnel. Since tunnel
4349 * mode does not set the body analyser, we can't reach this place
4350 * in tunnel mode, so we're left with keep-alive only.
4351 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4352 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4353 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4354 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4355 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4356 }
4357
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4358 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4359 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4360 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4361 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4362 goto http_msg_closing;
4363 }
4364 else {
4365 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4366 goto http_msg_closed;
4367 }
4368 }
4369 goto wait_other_side;
4370 }
4371
4372 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4373 http_msg_closing:
4374 /* nothing else to forward, just waiting for the output buffer
4375 * to be empty and for the shutw_now to take effect.
4376 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4377 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4378 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4379 goto http_msg_closed;
4380 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4381 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4382 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4383 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4384 if (objt_server(s->target))
4385 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4386 goto wait_other_side;
4387 }
4388 }
4389
4390 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4391 http_msg_closed:
4392 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4393 bi_erase(chn);
4394 channel_auto_close(chn);
4395 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4396 goto wait_other_side;
4397 }
4398
4399 wait_other_side:
4400 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4401 /* We force the response to leave immediately if we're waiting for the
4402 * other side, since there is no pending shutdown to push it out.
4403 */
4404 if (!channel_is_empty(chn))
4405 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4406 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4407}
4408
4409
4410/* Resync the request and response state machines. Return 1 if either state
4411 * changes.
4412 */
4413int http_resync_states(struct session *s)
4414{
4415 struct http_txn *txn = &s->txn;
4416 int old_req_state = txn->req.msg_state;
4417 int old_res_state = txn->rsp.msg_state;
4418
4419 http_silent_debug(__LINE__, s);
4420 http_sync_req_state(s);
4421 while (1) {
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_res_state(s))
4424 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4425 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4426 if (!http_sync_req_state(s))
4427 break;
4428 }
4429 http_silent_debug(__LINE__, s);
4430 /* OK, both state machines agree on a compatible state.
4431 * There are a few cases we're interested in :
4432 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4433 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4434 * directions, so let's simply disable both analysers.
4435 * - HTTP_MSG_CLOSED on the response only means we must abort the
4436 * request.
4437 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4438 * with server-close mode means we've completed one request and we
4439 * must re-initialize the server connection.
4440 */
4441
4442 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4443 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4444 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4445 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4446 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4447 channel_auto_close(s->req);
4448 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4449 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4450 channel_auto_close(s->rep);
4451 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4452 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4453 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4454 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4455 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4456 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4457 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4458 channel_auto_close(s->rep);
4459 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4460 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4461 channel_abort(s->req);
4462 channel_auto_close(s->req);
4463 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4464 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4465 }
4466 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4467 txn->rsp.msg_state == HTTP_MSG_DONE &&
4468 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4469 /* server-close: terminate this server connection and
4470 * reinitialize a fresh-new transaction.
4471 */
4472 http_end_txn_clean_session(s);
4473 }
4474
4475 http_silent_debug(__LINE__, s);
4476 return txn->req.msg_state != old_req_state ||
4477 txn->rsp.msg_state != old_res_state;
4478}
4479
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4480/* This function is an analyser which forwards request body (including chunk
4481 * sizes if any). It is called as soon as we must forward, even if we forward
4482 * zero byte. The only situation where it must not be called is when we're in
4483 * tunnel mode and we want to forward till the close. It's used both to forward
4484 * remaining data and to resync after end of body. It expects the msg_state to
4485 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4486 * 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]4487 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4488 * bytes of pending data + the headers if not already done (between sol and sov).
4489 * 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]4490 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4491int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4492{
4493 struct http_txn *txn = &s->txn;
4494 struct http_msg *msg = &s->txn.req;
4495
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4496 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4497 return 0;
4498
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4499 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]4500 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4501 /* Output closed while we were sending data. We must abort and
4502 * wake the other side up.
4503 */
4504 msg->msg_state = HTTP_MSG_ERROR;
4505 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4506 return 1;
4507 }
4508
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4509 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4510 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4511
4512 /* Note that we don't have to send 100-continue back because we don't
4513 * need the data to complete our job, and it's up to the server to
4514 * decide whether to return 100, 417 or anything else in return of
4515 * an "Expect: 100-continue" header.
4516 */
4517
4518 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4519 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4520 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4521 * is still null. We must save the body in msg->next because it
4522 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4523 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4524 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4525
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4526 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4527 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4528 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4529 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4530 }
4531
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4532 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4533 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4534
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4535 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4536 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4537 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4538 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4539 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4540 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4541 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4542 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4543 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4544
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4545 if (msg->msg_state == HTTP_MSG_DATA) {
4546 /* must still forward */
4547 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4548 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4549
4550 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4551 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4552 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4553 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4554 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4555 }
4556 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4557 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4558 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4559 * TRAILERS state.
4560 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4561 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4562
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4563 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4564 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4565 else if (ret < 0) {
4566 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4567 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4568 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]4569 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4570 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4571 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4572 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4573 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4574 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4575 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4576
4577 if (ret == 0)
4578 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4579 else if (ret < 0) {
4580 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4581 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4582 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]4583 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4584 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4585 /* we're in MSG_CHUNK_SIZE now */
4586 }
4587 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4588 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4589
4590 if (ret == 0)
4591 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4592 else if (ret < 0) {
4593 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4594 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4595 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]4596 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4597 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4598 /* we're in HTTP_MSG_DONE now */
4599 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4600 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4601 int old_state = msg->msg_state;
4602
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4603 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4604 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4605 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4606 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4607 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4608 if (http_resync_states(s)) {
4609 /* some state changes occurred, maybe the analyser
4610 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4611 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4612 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4613 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4614 /* request errors are most likely due to
4615 * the server aborting the transfer.
4616 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4617 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4618 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4619 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4620 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4621 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4622 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4623 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4624 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4625
4626 /* If "option abortonclose" is set on the backend, we
4627 * want to monitor the client's connection and forward
4628 * any shutdown notification to the server, which will
4629 * decide whether to close or to go on processing the
4630 * request.
4631 */
4632 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4633 channel_auto_read(req);
4634 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4635 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4636 else if (s->txn.meth == HTTP_METH_POST) {
4637 /* POST requests may require to read extra CRLF
4638 * sent by broken browsers and which could cause
4639 * an RST to be sent upon close on some systems
4640 * (eg: Linux).
4641 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4642 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4643 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4644
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4645 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4646 }
4647 }
4648
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4649 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4650 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4651 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4652 if (!(s->flags & SN_ERR_MASK))
4653 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4654 if (!(s->flags & SN_FINST_MASK)) {
4655 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4656 s->flags |= SN_FINST_H;
4657 else
4658 s->flags |= SN_FINST_D;
4659 }
4660
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4661 s->fe->fe_counters.cli_aborts++;
4662 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4663 if (objt_server(s->target))
4664 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4665
4666 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4667 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4668
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4669 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4670 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4671 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4672
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4673 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4674 * 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]4675 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4676 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4677 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4678
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4679 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4680 * 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]4681 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4682 * modes are already handled by the stream sock layer. We must not do
4683 * this in content-length mode because it could present the MSG_MORE
4684 * flag with the last block of forwarded data, which would cause an
4685 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4686 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4687 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4688 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4689
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4690 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4691 return 0;
4692
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4693 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4694 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4695 if (s->listener->counters)
4696 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4697 return_bad_req_stats_ok:
4698 txn->req.msg_state = HTTP_MSG_ERROR;
4699 if (txn->status) {
4700 /* Note: we don't send any error if some data were already sent */
4701 stream_int_retnclose(req->prod, NULL);
4702 } else {
4703 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4704 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4705 }
4706 req->analysers = 0;
4707 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]4708
4709 if (!(s->flags & SN_ERR_MASK))
4710 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4711 if (!(s->flags & SN_FINST_MASK)) {
4712 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4713 s->flags |= SN_FINST_H;
4714 else
4715 s->flags |= SN_FINST_D;
4716 }
4717 return 0;
4718
4719 aborted_xfer:
4720 txn->req.msg_state = HTTP_MSG_ERROR;
4721 if (txn->status) {
4722 /* Note: we don't send any error if some data were already sent */
4723 stream_int_retnclose(req->prod, NULL);
4724 } else {
4725 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4726 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4727 }
4728 req->analysers = 0;
4729 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4730
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4731 s->fe->fe_counters.srv_aborts++;
4732 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4733 if (objt_server(s->target))
4734 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4735
4736 if (!(s->flags & SN_ERR_MASK))
4737 s->flags |= SN_ERR_SRVCL;
4738 if (!(s->flags & SN_FINST_MASK)) {
4739 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4740 s->flags |= SN_FINST_H;
4741 else
4742 s->flags |= SN_FINST_D;
4743 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4744 return 0;
4745}
4746
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4747/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4748 * processing can continue on next analysers, or zero if it either needs more
4749 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4750 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4751 * when it has nothing left to do, and may remove any analyser when it wants to
4752 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4753 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4754int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4755{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4756 struct http_txn *txn = &s->txn;
4757 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4758 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4759 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4760 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4761 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4762
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4763 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]4764 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4765 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4766 rep,
4767 rep->rex, rep->wex,
4768 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4769 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4770 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4771
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4772 /*
4773 * Now parse the partial (or complete) lines.
4774 * We will check the response syntax, and also join multi-line
4775 * headers. An index of all the lines will be elaborated while
4776 * parsing.
4777 *
4778 * For the parsing, we use a 28 states FSM.
4779 *
4780 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4781 * rep->buf->p = beginning of response
4782 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4783 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4784 * msg->eol = end of current header or line (LF or CRLF)
4785 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4786 */
4787
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4788 /* There's a protected area at the end of the buffer for rewriting
4789 * purposes. We don't want to start to parse the request if the
4790 * protected area is affected, because we may have to move processed
4791 * data later, which is much more complicated.
4792 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4793 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4794 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4795 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4796 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4797 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4798 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4799 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4800 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4801 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4802 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4803 return 0;
4804 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4805 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4806 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4807 }
4808
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4809 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4810 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4811 }
4812
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4813 /* 1: we might have to print this header in debug mode */
4814 if (unlikely((global.mode & MODE_DEBUG) &&
4815 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4816 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4817 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4818
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4819 sol = rep->buf->p;
4820 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4821 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4822
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4823 sol += hdr_idx_first_pos(&txn->hdr_idx);
4824 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4825
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4826 while (cur_idx) {
4827 eol = sol + txn->hdr_idx.v[cur_idx].len;
4828 debug_hdr("srvhdr", s, sol, eol);
4829 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4830 cur_idx = txn->hdr_idx.v[cur_idx].next;
4831 }
4832 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4833
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4834 /*
4835 * Now we quickly check if we have found a full valid response.
4836 * If not so, we check the FD and buffer states before leaving.
4837 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4838 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4839 * responses are checked first.
4840 *
4841 * Depending on whether the client is still there or not, we
4842 * may send an error response back or not. Note that normally
4843 * we should only check for HTTP status there, and check I/O
4844 * errors somewhere else.
4845 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4846
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4847 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4848 /* Invalid response */
4849 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4850 /* we detected a parsing error. We want to archive this response
4851 * in the dedicated proxy area for later troubleshooting.
4852 */
4853 hdr_response_bad:
4854 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4855 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]4856
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4857 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4858 if (objt_server(s->target)) {
4859 objt_server(s->target)->counters.failed_resp++;
4860 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4861 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4862 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4863 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4864 rep->analysers = 0;
4865 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4866 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4867 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4868 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4869
4870 if (!(s->flags & SN_ERR_MASK))
4871 s->flags |= SN_ERR_PRXCOND;
4872 if (!(s->flags & SN_FINST_MASK))
4873 s->flags |= SN_FINST_H;
4874
4875 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4876 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4877
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4878 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4879 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4880 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4881 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4882 goto hdr_response_bad;
4883 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4884
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4885 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4886 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4887 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4888 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]4889
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4890 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4891 if (objt_server(s->target)) {
4892 objt_server(s->target)->counters.failed_resp++;
4893 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4894 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4895
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4896 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4897 rep->analysers = 0;
4898 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4899 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4900 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4901 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4902
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4903 if (!(s->flags & SN_ERR_MASK))
4904 s->flags |= SN_ERR_SRVCL;
4905 if (!(s->flags & SN_FINST_MASK))
4906 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4907 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4908 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4909
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4910 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4911 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4912 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4913 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]4914
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4915 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4916 if (objt_server(s->target)) {
4917 objt_server(s->target)->counters.failed_resp++;
4918 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4919 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4920
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4921 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4922 rep->analysers = 0;
4923 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4924 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4925 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4926 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4927
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4928 if (!(s->flags & SN_ERR_MASK))
4929 s->flags |= SN_ERR_SRVTO;
4930 if (!(s->flags & SN_FINST_MASK))
4931 s->flags |= SN_FINST_H;
4932 return 0;
4933 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4934
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]4935 /* client abort with an abortonclose */
4936 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
4937 s->fe->fe_counters.cli_aborts++;
4938 s->be->be_counters.cli_aborts++;
4939 if (objt_server(s->target))
4940 objt_server(s->target)->counters.cli_aborts++;
4941
4942 rep->analysers = 0;
4943 channel_auto_close(rep);
4944
4945 txn->status = 400;
4946 bi_erase(rep);
4947 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
4948
4949 if (!(s->flags & SN_ERR_MASK))
4950 s->flags |= SN_ERR_CLICL;
4951 if (!(s->flags & SN_FINST_MASK))
4952 s->flags |= SN_FINST_H;
4953
4954 /* process_session() will take care of the error */
4955 return 0;
4956 }
4957
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4958 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4959 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4960 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4961 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]4962
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4963 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4964 if (objt_server(s->target)) {
4965 objt_server(s->target)->counters.failed_resp++;
4966 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4967 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4968
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4969 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4970 rep->analysers = 0;
4971 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4972 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4973 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4974 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4975
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4976 if (!(s->flags & SN_ERR_MASK))
4977 s->flags |= SN_ERR_SRVCL;
4978 if (!(s->flags & SN_FINST_MASK))
4979 s->flags |= SN_FINST_H;
4980 return 0;
4981 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4982
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4983 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4984 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4985 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4986 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]4987
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4988 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4989 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4990 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4991
4992 if (!(s->flags & SN_ERR_MASK))
4993 s->flags |= SN_ERR_CLICL;
4994 if (!(s->flags & SN_FINST_MASK))
4995 s->flags |= SN_FINST_H;
4996
4997 /* process_session() will take care of the error */
4998 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4999 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5000
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5001 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5002 return 0;
5003 }
5004
5005 /* More interesting part now : we know that we have a complete
5006 * response which at least looks like HTTP. We have an indicator
5007 * of each header's length, so we can parse them quickly.
5008 */
5009
5010 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5011 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]5012
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5013 /*
5014 * 1: get the status code
5015 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5016 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5017 if (n < 1 || n > 5)
5018 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5019 /* when the client triggers a 4xx from the server, it's most often due
5020 * to a missing object or permission. These events should be tracked
5021 * because if they happen often, it may indicate a brute force or a
5022 * vulnerability scan.
5023 */
5024 if (n == 4)
5025 session_inc_http_err_ctr(s);
5026
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5027 if (objt_server(s->target))
5028 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5029
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5030 /* check if the response is HTTP/1.1 or above */
5031 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5032 ((rep->buf->p[5] > '1') ||
5033 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5034 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5035
5036 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5037 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]5038
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5039 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5040 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5041
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5042 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]5043
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5044 /* Adjust server's health based on status code. Note: status codes 501
5045 * and 505 are triggered on demand by client request, so we must not
5046 * count them as server failures.
5047 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5048 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5049 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5050 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5051 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5052 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5053 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5054
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5055 /*
5056 * 2: check for cacheability.
5057 */
5058
5059 switch (txn->status) {
5060 case 200:
5061 case 203:
5062 case 206:
5063 case 300:
5064 case 301:
5065 case 410:
5066 /* RFC2616 @13.4:
5067 * "A response received with a status code of
5068 * 200, 203, 206, 300, 301 or 410 MAY be stored
5069 * by a cache (...) unless a cache-control
5070 * directive prohibits caching."
5071 *
5072 * RFC2616 @9.5: POST method :
5073 * "Responses to this method are not cacheable,
5074 * unless the response includes appropriate
5075 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5076 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5077 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5078 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5079 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5080 break;
5081 default:
5082 break;
5083 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5084
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5085 /*
5086 * 3: we may need to capture headers
5087 */
5088 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5089 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5090 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5091 txn->rsp.cap, s->fe->rsp_cap);
5092
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5093 /* 4: determine the transfer-length.
5094 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5095 * the presence of a message-body in a RESPONSE and its transfer length
5096 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5097 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5098 * All responses to the HEAD request method MUST NOT include a
5099 * message-body, even though the presence of entity-header fields
5100 * might lead one to believe they do. All 1xx (informational), 204
5101 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5102 * message-body. All other responses do include a message-body,
5103 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5104 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5105 * 1. Any response which "MUST NOT" include a message-body (such as the
5106 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5107 * always terminated by the first empty line after the header fields,
5108 * regardless of the entity-header fields present in the message.
5109 *
5110 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5111 * the "chunked" transfer-coding (Section 6.2) is used, the
5112 * transfer-length is defined by the use of this transfer-coding.
5113 * If a Transfer-Encoding header field is present and the "chunked"
5114 * transfer-coding is not present, the transfer-length is defined by
5115 * the sender closing the connection.
5116 *
5117 * 3. If a Content-Length header field is present, its decimal value in
5118 * OCTETs represents both the entity-length and the transfer-length.
5119 * If a message is received with both a Transfer-Encoding header
5120 * field and a Content-Length header field, the latter MUST be ignored.
5121 *
5122 * 4. If the message uses the media type "multipart/byteranges", and
5123 * the transfer-length is not otherwise specified, then this self-
5124 * delimiting media type defines the transfer-length. This media
5125 * type MUST NOT be used unless the sender knows that the recipient
5126 * can parse it; the presence in a request of a Range header with
5127 * multiple byte-range specifiers from a 1.1 client implies that the
5128 * client can parse multipart/byteranges responses.
5129 *
5130 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5131 */
5132
5133 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5134 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5135 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5136 * FIXME: should we parse anyway and return an error on chunked encoding ?
5137 */
5138 if (txn->meth == HTTP_METH_HEAD ||
5139 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5140 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5141 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5142 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5143 goto skip_content_length;
5144 }
5145
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5146 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5147 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5148 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5149 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5150 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5151 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5152 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5153 /* bad transfer-encoding (chunked followed by something else) */
5154 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5155 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5156 break;
5157 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5158 }
5159
5160 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5161 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5162 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5163 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5164 signed long long cl;
5165
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5166 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5167 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5168 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5169 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5170
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5171 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5172 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5173 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5174 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5175
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5176 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5177 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5178 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5179 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5180
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5181 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5182 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5183 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5184 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5185
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5186 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5187 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5188 }
5189
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5190 if (s->fe->comp || s->be->comp)
5191 select_compression_response_header(s, rep->buf);
5192
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5193 /* FIXME: we should also implement the multipart/byterange method.
5194 * For now on, we resort to close mode in this case (unknown length).
5195 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5196skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5197
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5198 /* end of job, return OK */
5199 rep->analysers &= ~an_bit;
5200 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5201 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5202 return 1;
5203}
5204
5205/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5206 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5207 * and updates t->rep->analysers. It might make sense to explode it into several
5208 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5209 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5210int 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]5211{
5212 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5213 struct http_msg *msg = &txn->rsp;
5214 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5215 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5216
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5217 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]5218 now_ms, __FUNCTION__,
5219 t,
5220 rep,
5221 rep->rex, rep->wex,
5222 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5223 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5224 rep->analysers);
5225
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5226 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5227 return 0;
5228
5229 rep->analysers &= ~an_bit;
5230 rep->analyse_exp = TICK_ETERNITY;
5231
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5232 /* Now we have to check if we need to modify the Connection header.
5233 * This is more difficult on the response than it is on the request,
5234 * because we can have two different HTTP versions and we don't know
5235 * how the client will interprete a response. For instance, let's say
5236 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5237 * HTTP/1.1 response without any header. Maybe it will bound itself to
5238 * HTTP/1.0 because it only knows about it, and will consider the lack
5239 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5240 * the lack of header as a keep-alive. Thus we will use two flags
5241 * indicating how a request MAY be understood by the client. In case
5242 * of multiple possibilities, we'll fix the header to be explicit. If
5243 * ambiguous cases such as both close and keepalive are seen, then we
5244 * will fall back to explicit close. Note that we won't take risks with
5245 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5246 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5247 */
5248
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5249 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5250 txn->status == 101)) {
5251 /* Either we've established an explicit tunnel, or we're
5252 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5253 * to understand the next protocols. We have to switch to tunnel
5254 * mode, so that we transfer the request and responses then let
5255 * this protocol pass unmodified. When we later implement specific
5256 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5257 * header which contains information about that protocol for
5258 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5259 */
5260 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5261 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5262 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5263 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5264 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5265 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5266
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5267 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5268 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5269 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5270 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5271
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5272 /* now adjust header transformations depending on current state */
5273 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5274 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5275 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5276 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5277 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5278 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5279 else { /* SCL / KAL */
5280 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5281 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5282 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5283 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5284
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5285 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5286 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5287
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5288 /* Some keep-alive responses are converted to Server-close if
5289 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5290 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5291 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5292 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5293 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5294 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5295 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5296 }
5297
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5298 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5299 /*
5300 * 3: we will have to evaluate the filters.
5301 * As opposed to version 1.2, now they will be evaluated in the
5302 * filters order and not in the header order. This means that
5303 * each filter has to be validated among all headers.
5304 *
5305 * Filters are tried with ->be first, then with ->fe if it is
5306 * different from ->be.
5307 */
5308
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5309 cur_proxy = t->be;
5310 while (1) {
5311 struct proxy *rule_set = cur_proxy;
5312
5313 /* try headers filters */
5314 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5315 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5316 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5317 if (objt_server(t->target)) {
5318 objt_server(t->target)->counters.failed_resp++;
5319 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5320 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5321 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5322 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5323 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5324 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5325 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5326 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5327 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5328 if (!(t->flags & SN_ERR_MASK))
5329 t->flags |= SN_ERR_PRXCOND;
5330 if (!(t->flags & SN_FINST_MASK))
5331 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5332 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5333 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5334 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5335
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5336 /* has the response been denied ? */
5337 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5338 if (objt_server(t->target))
5339 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5340
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5341 t->be->be_counters.denied_resp++;
5342 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5343 if (t->listener->counters)
5344 t->listener->counters->denied_resp++;
5345
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5346 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5347 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5348
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5349 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5350 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5351 if (txn->status < 200)
5352 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5353 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5354 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]5355 ret = acl_pass(ret);
5356 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5357 ret = !ret;
5358 if (!ret)
5359 continue;
5360 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5361 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5362 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5363 }
5364
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5365 /* check whether we're already working on the frontend */
5366 if (cur_proxy == t->fe)
5367 break;
5368 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5369 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5370
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5371 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5372 * We may be facing a 100-continue response, in which case this
5373 * is not the right response, and we're waiting for the next one.
5374 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5375 * next one.
5376 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5377 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5378 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5379 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5380 msg->msg_state = HTTP_MSG_RPBEFORE;
5381 txn->status = 0;
5382 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5383 return 1;
5384 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5385 else if (unlikely(txn->status < 200))
5386 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5387
5388 /* we don't have any 1xx status code now */
5389
5390 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5391 * 4: check for server cookie.
5392 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5393 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5394 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5395 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5396
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5397
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5398 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5399 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5400 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5401 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]5402 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5403
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5404 /*
5405 * 6: add server cookie in the response if needed
5406 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5407 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5408 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5409 (!(t->flags & SN_DIRECT) ||
5410 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5411 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5412 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5413 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5414 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5415 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5416 /* the server is known, it's not the one the client requested, or the
5417 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5418 * insert a set-cookie here, except if we want to insert only on POST
5419 * requests and this one isn't. Note that servers which don't have cookies
5420 * (eg: some backup servers) will return a full cookie removal request.
5421 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5422 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5423 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5424 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5425 t->be->cookie_name);
5426 }
5427 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5428 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]5429
5430 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5431 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5432 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5433 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5434 trash.len += 5;
5435
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5436 if (t->be->cookie_maxlife) {
5437 /* emit first_date, which is either the original one or
5438 * the current date.
5439 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5440 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5441 s30tob64(txn->cookie_first_date ?
5442 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5443 (date.tv_sec+3) >> 2, trash.str + trash.len);
5444 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5445 }
5446 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5447 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5448 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5449
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5450 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5451 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5452
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5453 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5454 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5455
5456 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5457 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5458
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5459 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]5460 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5461
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5462 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5463 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5464 /* the server did not change, only the date was updated */
5465 txn->flags |= TX_SCK_UPDATED;
5466 else
5467 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5468
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5469 /* Here, we will tell an eventual cache on the client side that we don't
5470 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5471 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5472 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5473 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5474 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5475
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5476 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5477
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5478 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5479 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5480 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5481 }
5482 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5483
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5484 /*
5485 * 7: check if result will be cacheable with a cookie.
5486 * We'll block the response if security checks have caught
5487 * nasty things such as a cacheable cookie.
5488 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5489 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5490 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5491 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5492
5493 /* we're in presence of a cacheable response containing
5494 * a set-cookie header. We'll block it as requested by
5495 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5496 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5497 if (objt_server(t->target))
5498 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5499
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5500 t->be->be_counters.denied_resp++;
5501 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5502 if (t->listener->counters)
5503 t->listener->counters->denied_resp++;
5504
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5505 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5506 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5507 send_log(t->be, LOG_ALERT,
5508 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5509 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5510 goto return_srv_prx_502;
5511 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5512
5513 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5514 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5515 * If an "Upgrade" token is found, the header is left untouched in order
5516 * not to have to deal with some client bugs : some of them fail an upgrade
5517 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5518 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5519 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5520 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5521 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5522 unsigned int want_flags = 0;
5523
5524 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5525 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5526 /* we want a keep-alive response here. Keep-alive header
5527 * required if either side is not 1.1.
5528 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5529 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5530 want_flags |= TX_CON_KAL_SET;
5531 }
5532 else {
5533 /* we want a close response here. Close header required if
5534 * the server is 1.1, regardless of the client.
5535 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5536 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5537 want_flags |= TX_CON_CLO_SET;
5538 }
5539
5540 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5541 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5542 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5543
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5544 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5545 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5546 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5547 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5548
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5549 /*************************************************************
5550 * OK, that's finished for the headers. We have done what we *
5551 * could. Let's switch to the DATA state. *
5552 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5553
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5554 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5555
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5556 /* if the user wants to log as soon as possible, without counting
5557 * bytes from the server, then this is the right moment. We have
5558 * to temporarily assign bytes_out to log what we currently have.
5559 */
5560 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5561 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5562 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5563 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5564 t->logs.bytes_out = 0;
5565 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5566
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5567 /* Note: we must not try to cheat by jumping directly to DATA,
5568 * otherwise we would not let the client side wake up.
5569 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5570
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5571 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5572 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5573 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5574}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5575
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5576/* This function is an analyser which forwards response body (including chunk
5577 * sizes if any). It is called as soon as we must forward, even if we forward
5578 * zero byte. The only situation where it must not be called is when we're in
5579 * tunnel mode and we want to forward till the close. It's used both to forward
5580 * remaining data and to resync after end of body. It expects the msg_state to
5581 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5582 * 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]5583 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5584 * bytes of pending data + the headers if not already done (between sol and sov).
5585 * 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]5586 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5587int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5588{
5589 struct http_txn *txn = &s->txn;
5590 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5591 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5592 static struct buffer *tmpbuf = NULL;
5593 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5594 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5595
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5596 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5597 return 0;
5598
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5599 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]5600 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5601 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5602 /* Output closed while we were sending data. We must abort and
5603 * wake the other side up.
5604 */
5605 msg->msg_state = HTTP_MSG_ERROR;
5606 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5607 return 1;
5608 }
5609
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5610 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5611 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5612
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5613 /* this is the first time we need the compression buffer */
5614 if (s->comp_algo != NULL && tmpbuf == NULL) {
5615 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5616 goto aborted_xfer; /* no memory */
5617 }
5618
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5619 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5620 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5621 * rep->buf.p still points to the beginning of the message and msg->sol
5622 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5623 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5624 channel_forward(res, msg->sov);
5625 msg->next = 0;
5626 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5627
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5628 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5629 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5630 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5631 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5632 }
5633
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5634 if (s->comp_algo != NULL) {
5635 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5636 if (ret < 0)
5637 goto missing_data; /* not enough spaces in buffers */
5638 compressing = 1;
5639 }
5640
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5641 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5642 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5643 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5644 if (s->comp_algo == NULL) {
5645 bytes = msg->sov - msg->sol;
5646 if (msg->chunk_len || bytes) {
5647 msg->sol = msg->sov;
5648 msg->next -= bytes; /* will be forwarded */
5649 msg->chunk_len += bytes;
5650 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5651 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5652 }
5653
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5654 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5655 int ret;
5656
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5657 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5658 if (compressing) {
5659 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5660 if (ret < 0)
5661 goto aborted_xfer;
5662 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5663
5664 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5665 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5666
5667 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5668 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5669 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5670 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5671 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5672 if (compressing && consumed_data) {
5673 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5674 compressing = 0;
5675 }
5676 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5677 }
5678 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5679 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5680 * set ->sov and ->next to point to the body and switch to DATA or
5681 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5682 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5683 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5684
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5685 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5686 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5687 else if (ret < 0) {
5688 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5689 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]5690 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5691 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5692 if (compressing) {
5693 if (likely(msg->chunk_len > 0)) {
5694 /* skipping data if we are in compression mode */
5695 b_adv(res->buf, msg->next);
5696 msg->next = 0;
5697 msg->sov = 0;
5698 msg->sol = 0;
5699 } else {
5700 if (consumed_data) {
5701 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5702 compressing = 0;
5703 }
5704 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5705 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5706 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5707 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5708 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5709 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5710 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5711
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5712 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5713 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5714 else if (ret < 0) {
5715 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5716 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]5717 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5718 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5719 /* skipping data in buffer for compression */
5720 if (compressing) {
5721 b_adv(res->buf, msg->next);
5722 msg->next = 0;
5723 msg->sov = 0;
5724 msg->sol = 0;
5725 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5726 /* we're in MSG_CHUNK_SIZE now */
5727 }
5728 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5729 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5730
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5731 if (ret == 0)
5732 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5733 else if (ret < 0) {
5734 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5735 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]5736 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5737 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5738 if (s->comp_algo != NULL) {
5739 /* forwarding trailers */
5740 channel_forward(res, msg->next);
5741 msg->next = 0;
5742 }
5743 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5744 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5745 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5746 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5747 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5748 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5749 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5750 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5751 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5752 if (http_resync_states(s)) {
5753 http_silent_debug(__LINE__, s);
5754 /* some state changes occurred, maybe the analyser
5755 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5756 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5757 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5758 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5759 /* response errors are most likely due to
5760 * the client aborting the transfer.
5761 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5762 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5763 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5764 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5765 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5766 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5767 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5768 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5769 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5770 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5771 }
5772 }
5773
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5774 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5775 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5776 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5777 compressing = 0;
5778 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5779
5780 if (res->flags & CF_SHUTW)
5781 goto aborted_xfer;
5782
5783 /* stop waiting for data if the input is closed before the end. If the
5784 * client side was already closed, it means that the client has aborted,
5785 * so we don't want to count this as a server abort. Otherwise it's a
5786 * server abort.
5787 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5788 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5789 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5790 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5791 if (!(s->flags & SN_ERR_MASK))
5792 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5793 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5794 if (objt_server(s->target))
5795 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5796 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5797 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5798
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5799 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5800 if (!s->req->analysers)
5801 goto return_bad_res;
5802
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5803 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5804 if (s->comp_algo == NULL) {
5805 bytes = msg->sov - msg->sol;
5806 if (msg->chunk_len || bytes) {
5807 msg->sol = msg->sov;
5808 msg->next -= bytes; /* will be forwarded */
5809 msg->chunk_len += bytes;
5810 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5811 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5812 }
5813
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5814 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5815 * 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]5816 * Similarly, with keep-alive on the client side, we don't want to forward a
5817 * close.
5818 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5819 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5820 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5821 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5822 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5823
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5824 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5825 * 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]5826 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5827 * modes are already handled by the stream sock layer. We must not do
5828 * this in content-length mode because it could present the MSG_MORE
5829 * flag with the last block of forwarded data, which would cause an
5830 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5831 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5832 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5833 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5834
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5835 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5836 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5837 return 0;
5838
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5839 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5840 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5841 if (objt_server(s->target))
5842 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5843
5844 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5845 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5846 /* don't send any error message as we're in the body */
5847 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5848 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5849 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]5850 if (objt_server(s->target))
5851 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5852
5853 if (!(s->flags & SN_ERR_MASK))
5854 s->flags |= SN_ERR_PRXCOND;
5855 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5856 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5857 return 0;
5858
5859 aborted_xfer:
5860 txn->rsp.msg_state = HTTP_MSG_ERROR;
5861 /* don't send any error message as we're in the body */
5862 stream_int_retnclose(res->cons, NULL);
5863 res->analysers = 0;
5864 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5865
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5866 s->fe->fe_counters.cli_aborts++;
5867 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5868 if (objt_server(s->target))
5869 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5870
5871 if (!(s->flags & SN_ERR_MASK))
5872 s->flags |= SN_ERR_CLICL;
5873 if (!(s->flags & SN_FINST_MASK))
5874 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5875 return 0;
5876}
5877
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5878/* Iterate the same filter through all request headers.
5879 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5880 * Since it can manage the switch to another backend, it updates the per-proxy
5881 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5882 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5883int 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]5884{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5885 char term;
5886 char *cur_ptr, *cur_end, *cur_next;
5887 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5888 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5889 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5890 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5891
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5892 last_hdr = 0;
5893
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5894 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5895 old_idx = 0;
5896
5897 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5898 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5899 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5900 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5901 (exp->action == ACT_ALLOW ||
5902 exp->action == ACT_DENY ||
5903 exp->action == ACT_TARPIT))
5904 return 0;
5905
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5906 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5907 if (!cur_idx)
5908 break;
5909
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5910 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5911 cur_ptr = cur_next;
5912 cur_end = cur_ptr + cur_hdr->len;
5913 cur_next = cur_end + cur_hdr->cr + 1;
5914
5915 /* Now we have one header between cur_ptr and cur_end,
5916 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5917 */
5918
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5919 /* The annoying part is that pattern matching needs
5920 * that we modify the contents to null-terminate all
5921 * strings before testing them.
5922 */
5923
5924 term = *cur_end;
5925 *cur_end = '\0';
5926
5927 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5928 switch (exp->action) {
5929 case ACT_SETBE:
5930 /* It is not possible to jump a second time.
5931 * FIXME: should we return an HTTP/500 here so that
5932 * the admin knows there's a problem ?
5933 */
5934 if (t->be != t->fe)
5935 break;
5936
5937 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5938 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5939 last_hdr = 1;
5940 break;
5941
5942 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5943 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5944 last_hdr = 1;
5945 break;
5946
5947 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5948 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5949 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5950
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5951 t->fe->fe_counters.denied_req++;
5952 if (t->fe != t->be)
5953 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5954 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5955 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5956
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5957 break;
5958
5959 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5960 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5961 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5962
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5963 t->fe->fe_counters.denied_req++;
5964 if (t->fe != t->be)
5965 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5966 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5967 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5968
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5969 break;
5970
5971 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5972 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
5973 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5974 /* FIXME: if the user adds a newline in the replacement, the
5975 * index will not be recalculated for now, and the new line
5976 * will not be counted as a new header.
5977 */
5978
5979 cur_end += delta;
5980 cur_next += delta;
5981 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5982 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5983 break;
5984
5985 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5986 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5987 cur_next += delta;
5988
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5989 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5990 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5991 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5992 cur_hdr->len = 0;
5993 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5994 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5995 break;
5996
5997 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5998 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5999 if (cur_end)
6000 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6001
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6002 /* keep the link from this header to next one in case of later
6003 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6004 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6005 old_idx = cur_idx;
6006 }
6007 return 0;
6008}
6009
6010
6011/* Apply the filter to the request line.
6012 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6013 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6014 * Since it can manage the switch to another backend, it updates the per-proxy
6015 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6016 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6017int 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]6018{
6019 char term;
6020 char *cur_ptr, *cur_end;
6021 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6022 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6023 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6024
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6025 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6026 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6027 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6028 (exp->action == ACT_ALLOW ||
6029 exp->action == ACT_DENY ||
6030 exp->action == ACT_TARPIT))
6031 return 0;
6032 else if (exp->action == ACT_REMOVE)
6033 return 0;
6034
6035 done = 0;
6036
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6037 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6038 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6039
6040 /* Now we have the request line between cur_ptr and cur_end */
6041
6042 /* The annoying part is that pattern matching needs
6043 * that we modify the contents to null-terminate all
6044 * strings before testing them.
6045 */
6046
6047 term = *cur_end;
6048 *cur_end = '\0';
6049
6050 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6051 switch (exp->action) {
6052 case ACT_SETBE:
6053 /* It is not possible to jump a second time.
6054 * FIXME: should we return an HTTP/500 here so that
6055 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6056 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6057 if (t->be != t->fe)
6058 break;
6059
6060 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6061 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6062 done = 1;
6063 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6064
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6065 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6066 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6067 done = 1;
6068 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6069
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6070 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6071 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6072
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6073 t->fe->fe_counters.denied_req++;
6074 if (t->fe != t->be)
6075 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6076 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6077 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6078
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6079 done = 1;
6080 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6081
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6082 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6083 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6084
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6085 t->fe->fe_counters.denied_req++;
6086 if (t->fe != t->be)
6087 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6088 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6089 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6090
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6091 done = 1;
6092 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6093
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6094 case ACT_REPLACE:
6095 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6096 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6097 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6098 /* FIXME: if the user adds a newline in the replacement, the
6099 * index will not be recalculated for now, and the new line
6100 * will not be counted as a new header.
6101 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6102
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6103 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6104 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6105 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6106 HTTP_MSG_RQMETH,
6107 cur_ptr, cur_end + 1,
6108 NULL, NULL);
6109 if (unlikely(!cur_end))
6110 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6111
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6112 /* we have a full request and we know that we have either a CR
6113 * or an LF at <ptr>.
6114 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6115 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6116 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]6117 /* there is no point trying this regex on headers */
6118 return 1;
6119 }
6120 }
6121 *cur_end = term; /* restore the string terminator */
6122 return done;
6123}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6124
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6125
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6126
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6127/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6128 * 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]6129 * 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]6130 * unparsable request. Since it can manage the switch to another backend, it
6131 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6132 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6133int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6134{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6135 struct http_txn *txn = &s->txn;
6136 struct hdr_exp *exp;
6137
6138 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6139 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6140
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6141 /*
6142 * The interleaving of transformations and verdicts
6143 * makes it difficult to decide to continue or stop
6144 * the evaluation.
6145 */
6146
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6147 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6148 break;
6149
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6150 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6151 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6152 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6153 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6154
6155 /* if this filter had a condition, evaluate it now and skip to
6156 * next filter if the condition does not match.
6157 */
6158 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6159 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]6160 ret = acl_pass(ret);
6161 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6162 ret = !ret;
6163
6164 if (!ret)
6165 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6166 }
6167
6168 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6169 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6170 if (unlikely(ret < 0))
6171 return -1;
6172
6173 if (likely(ret == 0)) {
6174 /* The filter did not match the request, it can be
6175 * iterated through all headers.
6176 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6177 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6178 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6179 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6180 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6181}
6182
6183
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6184
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6185/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6186 * Try to retrieve the server associated to the appsession.
6187 * If the server is found, it's assigned to the session.
6188 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6189void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6190 struct http_txn *txn = &t->txn;
6191 appsess *asession = NULL;
6192 char *sessid_temp = NULL;
6193
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6194 if (len > t->be->appsession_len) {
6195 len = t->be->appsession_len;
6196 }
6197
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6198 if (t->be->options2 & PR_O2_AS_REQL) {
6199 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6200 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6201 /* 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]6202 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6203 }
6204
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6205 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6206 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6207 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6208 return;
6209 }
6210
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6211 memcpy(txn->sessid, buf, len);
6212 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6213 }
6214
6215 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6216 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6217 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6218 return;
6219 }
6220
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6221 memcpy(sessid_temp, buf, len);
6222 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6223
6224 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6225 /* free previously allocated memory */
6226 pool_free2(apools.sessid, sessid_temp);
6227
6228 if (asession != NULL) {
6229 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6230 if (!(t->be->options2 & PR_O2_AS_REQL))
6231 asession->request_count++;
6232
6233 if (asession->serverid != NULL) {
6234 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6235
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6236 while (srv) {
6237 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6238 if ((srv->state & SRV_RUNNING) ||
6239 (t->be->options & PR_O_PERSIST) ||
6240 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6241 /* we found the server and it's usable */
6242 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6243 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6244 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6245 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6246
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6247 break;
6248 } else {
6249 txn->flags &= ~TX_CK_MASK;
6250 txn->flags |= TX_CK_DOWN;
6251 }
6252 }
6253 srv = srv->next;
6254 }
6255 }
6256 }
6257}
6258
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6259/* Find the end of a cookie value contained between <s> and <e>. It works the
6260 * same way as with headers above except that the semi-colon also ends a token.
6261 * See RFC2965 for more information. Note that it requires a valid header to
6262 * return a valid result.
6263 */
6264char *find_cookie_value_end(char *s, const char *e)
6265{
6266 int quoted, qdpair;
6267
6268 quoted = qdpair = 0;
6269 for (; s < e; s++) {
6270 if (qdpair) qdpair = 0;
6271 else if (quoted) {
6272 if (*s == '\\') qdpair = 1;
6273 else if (*s == '"') quoted = 0;
6274 }
6275 else if (*s == '"') quoted = 1;
6276 else if (*s == ',' || *s == ';') return s;
6277 }
6278 return s;
6279}
6280
6281/* Delete a value in a header between delimiters <from> and <next> in buffer
6282 * <buf>. The number of characters displaced is returned, and the pointer to
6283 * the first delimiter is updated if required. The function tries as much as
6284 * possible to respect the following principles :
6285 * - replace <from> delimiter by the <next> one unless <from> points to a
6286 * colon, in which case <next> is simply removed
6287 * - set exactly one space character after the new first delimiter, unless
6288 * there are not enough characters in the block being moved to do so.
6289 * - remove unneeded spaces before the previous delimiter and after the new
6290 * one.
6291 *
6292 * It is the caller's responsibility to ensure that :
6293 * - <from> points to a valid delimiter or the colon ;
6294 * - <next> points to a valid delimiter or the final CR/LF ;
6295 * - there are non-space chars before <from> ;
6296 * - there is a CR/LF at or after <next>.
6297 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6298int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6299{
6300 char *prev = *from;
6301
6302 if (*prev == ':') {
6303 /* We're removing the first value, preserve the colon and add a
6304 * space if possible.
6305 */
6306 if (!http_is_crlf[(unsigned char)*next])
6307 next++;
6308 prev++;
6309 if (prev < next)
6310 *prev++ = ' ';
6311
6312 while (http_is_spht[(unsigned char)*next])
6313 next++;
6314 } else {
6315 /* Remove useless spaces before the old delimiter. */
6316 while (http_is_spht[(unsigned char)*(prev-1)])
6317 prev--;
6318 *from = prev;
6319
6320 /* copy the delimiter and if possible a space if we're
6321 * not at the end of the line.
6322 */
6323 if (!http_is_crlf[(unsigned char)*next]) {
6324 *prev++ = *next++;
6325 if (prev + 1 < next)
6326 *prev++ = ' ';
6327 while (http_is_spht[(unsigned char)*next])
6328 next++;
6329 }
6330 }
6331 return buffer_replace2(buf, prev, next, NULL, 0);
6332}
6333
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6334/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6335 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6336 * desirable to call it only when needed. This code is quite complex because
6337 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6338 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6339 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6340void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6341{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6342 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6343 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6344 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6345 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6346 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6347
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6348 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6349 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6350 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6351
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6352 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6353 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6354 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6355
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6356 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6357 hdr_beg = hdr_next;
6358 hdr_end = hdr_beg + cur_hdr->len;
6359 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6360
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6361 /* We have one full header between hdr_beg and hdr_end, and the
6362 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6363 * "Cookie:" headers.
6364 */
6365
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6366 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6367 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6368 old_idx = cur_idx;
6369 continue;
6370 }
6371
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6372 del_from = NULL; /* nothing to be deleted */
6373 preserve_hdr = 0; /* assume we may kill the whole header */
6374
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6375 /* Now look for cookies. Conforming to RFC2109, we have to support
6376 * attributes whose name begin with a '$', and associate them with
6377 * the right cookie, if we want to delete this cookie.
6378 * So there are 3 cases for each cookie read :
6379 * 1) it's a special attribute, beginning with a '$' : ignore it.
6380 * 2) it's a server id cookie that we *MAY* want to delete : save
6381 * some pointers on it (last semi-colon, beginning of cookie...)
6382 * 3) it's an application cookie : we *MAY* have to delete a previous
6383 * "special" cookie.
6384 * At the end of loop, if a "special" cookie remains, we may have to
6385 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6386 * *MUST* delete it.
6387 *
6388 * Note: RFC2965 is unclear about the processing of spaces around
6389 * the equal sign in the ATTR=VALUE form. A careful inspection of
6390 * the RFC explicitly allows spaces before it, and not within the
6391 * tokens (attrs or values). An inspection of RFC2109 allows that
6392 * too but section 10.1.3 lets one think that spaces may be allowed
6393 * after the equal sign too, resulting in some (rare) buggy
6394 * implementations trying to do that. So let's do what servers do.
6395 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6396 * allowed quoted strings in values, with any possible character
6397 * after a backslash, including control chars and delimitors, which
6398 * causes parsing to become ambiguous. Browsers also allow spaces
6399 * within values even without quotes.
6400 *
6401 * We have to keep multiple pointers in order to support cookie
6402 * removal at the beginning, middle or end of header without
6403 * corrupting the header. All of these headers are valid :
6404 *
6405 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6406 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6407 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6408 * | | | | | | | | |
6409 * | | | | | | | | hdr_end <--+
6410 * | | | | | | | +--> next
6411 * | | | | | | +----> val_end
6412 * | | | | | +-----------> val_beg
6413 * | | | | +--------------> equal
6414 * | | | +----------------> att_end
6415 * | | +---------------------> att_beg
6416 * | +--------------------------> prev
6417 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6418 */
6419
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6420 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6421 /* Iterate through all cookies on this line */
6422
6423 /* find att_beg */
6424 att_beg = prev + 1;
6425 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6426 att_beg++;
6427
6428 /* find att_end : this is the first character after the last non
6429 * space before the equal. It may be equal to hdr_end.
6430 */
6431 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6432
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6433 while (equal < hdr_end) {
6434 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6435 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6436 if (http_is_spht[(unsigned char)*equal++])
6437 continue;
6438 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6439 }
6440
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6441 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6442 * is between <att_beg> and <equal>, both may be identical.
6443 */
6444
6445 /* look for end of cookie if there is an equal sign */
6446 if (equal < hdr_end && *equal == '=') {
6447 /* look for the beginning of the value */
6448 val_beg = equal + 1;
6449 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6450 val_beg++;
6451
6452 /* find the end of the value, respecting quotes */
6453 next = find_cookie_value_end(val_beg, hdr_end);
6454
6455 /* make val_end point to the first white space or delimitor after the value */
6456 val_end = next;
6457 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6458 val_end--;
6459 } else {
6460 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6461 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6462
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6463 /* We have nothing to do with attributes beginning with '$'. However,
6464 * they will automatically be removed if a header before them is removed,
6465 * since they're supposed to be linked together.
6466 */
6467 if (*att_beg == '$')
6468 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6469
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6470 /* Ignore cookies with no equal sign */
6471 if (equal == next) {
6472 /* This is not our cookie, so we must preserve it. But if we already
6473 * scheduled another cookie for removal, we cannot remove the
6474 * complete header, but we can remove the previous block itself.
6475 */
6476 preserve_hdr = 1;
6477 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6478 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6479 val_end += delta;
6480 next += delta;
6481 hdr_end += delta;
6482 hdr_next += delta;
6483 cur_hdr->len += delta;
6484 http_msg_move_end(&txn->req, delta);
6485 prev = del_from;
6486 del_from = NULL;
6487 }
6488 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6489 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6490
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6491 /* if there are spaces around the equal sign, we need to
6492 * strip them otherwise we'll get trouble for cookie captures,
6493 * or even for rewrites. Since this happens extremely rarely,
6494 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6495 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6496 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6497 int stripped_before = 0;
6498 int stripped_after = 0;
6499
6500 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6501 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6502 equal += stripped_before;
6503 val_beg += stripped_before;
6504 }
6505
6506 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6507 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6508 val_beg += stripped_after;
6509 stripped_before += stripped_after;
6510 }
6511
6512 val_end += stripped_before;
6513 next += stripped_before;
6514 hdr_end += stripped_before;
6515 hdr_next += stripped_before;
6516 cur_hdr->len += stripped_before;
6517 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6518 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6519 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6520
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6521 /* First, let's see if we want to capture this cookie. We check
6522 * that we don't already have a client side cookie, because we
6523 * can only capture one. Also as an optimisation, we ignore
6524 * cookies shorter than the declared name.
6525 */
6526 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6527 (val_end - att_beg >= t->fe->capture_namelen) &&
6528 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6529 int log_len = val_end - att_beg;
6530
6531 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6532 Alert("HTTP logging : out of memory.\n");
6533 } else {
6534 if (log_len > t->fe->capture_len)
6535 log_len = t->fe->capture_len;
6536 memcpy(txn->cli_cookie, att_beg, log_len);
6537 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6538 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6539 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6540
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6541 /* Persistence cookies in passive, rewrite or insert mode have the
6542 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6543 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6544 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6545 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6546 * For cookies in prefix mode, the form is :
6547 *
6548 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6549 */
6550 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6551 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6552 struct server *srv = t->be->srv;
6553 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6554
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6555 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6556 * have the server ID between val_beg and delim, and the original cookie between
6557 * delim+1 and val_end. Otherwise, delim==val_end :
6558 *
6559 * Cookie: NAME=SRV; # in all but prefix modes
6560 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6561 * | || || | |+-> next
6562 * | || || | +--> val_end
6563 * | || || +---------> delim
6564 * | || |+------------> val_beg
6565 * | || +-------------> att_end = equal
6566 * | |+-----------------> att_beg
6567 * | +------------------> prev
6568 * +-------------------------> hdr_beg
6569 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6570
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6571 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6572 for (delim = val_beg; delim < val_end; delim++)
6573 if (*delim == COOKIE_DELIM)
6574 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6575 } else {
6576 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6577 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6578 /* Now check if the cookie contains a date field, which would
6579 * appear after a vertical bar ('|') just after the server name
6580 * and before the delimiter.
6581 */
6582 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6583 if (vbar1) {
6584 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6585 * right is the last seen date. It is a base64 encoded
6586 * 30-bit value representing the UNIX date since the
6587 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6588 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6589 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6590 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6591 if (val_end - vbar1 >= 5) {
6592 val = b64tos30(vbar1);
6593 if (val > 0)
6594 txn->cookie_last_date = val << 2;
6595 }
6596 /* look for a second vertical bar */
6597 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6598 if (vbar1 && (val_end - vbar1 > 5)) {
6599 val = b64tos30(vbar1 + 1);
6600 if (val > 0)
6601 txn->cookie_first_date = val << 2;
6602 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6603 }
6604 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6605
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6606 /* if the cookie has an expiration date and the proxy wants to check
6607 * it, then we do that now. We first check if the cookie is too old,
6608 * then only if it has expired. We detect strict overflow because the
6609 * time resolution here is not great (4 seconds). Cookies with dates
6610 * in the future are ignored if their offset is beyond one day. This
6611 * allows an admin to fix timezone issues without expiring everyone
6612 * and at the same time avoids keeping unwanted side effects for too
6613 * long.
6614 */
6615 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6616 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6617 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6618 txn->flags &= ~TX_CK_MASK;
6619 txn->flags |= TX_CK_OLD;
6620 delim = val_beg; // let's pretend we have not found the cookie
6621 txn->cookie_first_date = 0;
6622 txn->cookie_last_date = 0;
6623 }
6624 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6625 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6626 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6627 txn->flags &= ~TX_CK_MASK;
6628 txn->flags |= TX_CK_EXPIRED;
6629 delim = val_beg; // let's pretend we have not found the cookie
6630 txn->cookie_first_date = 0;
6631 txn->cookie_last_date = 0;
6632 }
6633
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6634 /* Here, we'll look for the first running server which supports the cookie.
6635 * This allows to share a same cookie between several servers, for example
6636 * to dedicate backup servers to specific servers only.
6637 * However, to prevent clients from sticking to cookie-less backup server
6638 * when they have incidentely learned an empty cookie, we simply ignore
6639 * empty cookies and mark them as invalid.
6640 * The same behaviour is applied when persistence must be ignored.
6641 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6642 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6643 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6644
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6645 while (srv) {
6646 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6647 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6648 if ((srv->state & SRV_RUNNING) ||
6649 (t->be->options & PR_O_PERSIST) ||
6650 (t->flags & SN_FORCE_PRST)) {
6651 /* we found the server and we can use it */
6652 txn->flags &= ~TX_CK_MASK;
6653 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6654 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6655 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6656 break;
6657 } else {
6658 /* we found a server, but it's down,
6659 * mark it as such and go on in case
6660 * another one is available.
6661 */
6662 txn->flags &= ~TX_CK_MASK;
6663 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6664 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6665 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6666 srv = srv->next;
6667 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6668
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6669 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6670 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6671 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6672 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6673 txn->flags |= TX_CK_UNUSED;
6674 else
6675 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6676 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6677
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6678 /* depending on the cookie mode, we may have to either :
6679 * - delete the complete cookie if we're in insert+indirect mode, so that
6680 * the server never sees it ;
6681 * - remove the server id from the cookie value, and tag the cookie as an
6682 * application cookie so that it does not get accidentely removed later,
6683 * if we're in cookie prefix mode
6684 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6685 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6686 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6687
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6688 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6689 val_end += delta;
6690 next += delta;
6691 hdr_end += delta;
6692 hdr_next += delta;
6693 cur_hdr->len += delta;
6694 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6695
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6696 del_from = NULL;
6697 preserve_hdr = 1; /* we want to keep this cookie */
6698 }
6699 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6700 (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]6701 del_from = prev;
6702 }
6703 } else {
6704 /* This is not our cookie, so we must preserve it. But if we already
6705 * scheduled another cookie for removal, we cannot remove the
6706 * complete header, but we can remove the previous block itself.
6707 */
6708 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6709
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6710 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6711 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6712 if (att_beg >= del_from)
6713 att_beg += delta;
6714 if (att_end >= del_from)
6715 att_end += delta;
6716 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6717 val_end += delta;
6718 next += delta;
6719 hdr_end += delta;
6720 hdr_next += delta;
6721 cur_hdr->len += delta;
6722 http_msg_move_end(&txn->req, delta);
6723 prev = del_from;
6724 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6725 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6726 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6727
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6728 /* Look for the appsession cookie unless persistence must be ignored */
6729 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6730 int cmp_len, value_len;
6731 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6732
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6733 if (t->be->options2 & PR_O2_AS_PFX) {
6734 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6735 value_begin = att_beg + t->be->appsession_name_len;
6736 value_len = val_end - att_beg - t->be->appsession_name_len;
6737 } else {
6738 cmp_len = att_end - att_beg;
6739 value_begin = val_beg;
6740 value_len = val_end - val_beg;
6741 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6742
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6743 /* let's see if the cookie is our appcookie */
6744 if (cmp_len == t->be->appsession_name_len &&
6745 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6746 manage_client_side_appsession(t, value_begin, value_len);
6747 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6748 }
6749
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6750 /* continue with next cookie on this header line */
6751 att_beg = next;
6752 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6753
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6754 /* There are no more cookies on this line.
6755 * We may still have one (or several) marked for deletion at the
6756 * end of the line. We must do this now in two ways :
6757 * - if some cookies must be preserved, we only delete from the
6758 * mark to the end of line ;
6759 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6760 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6761 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6762 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6763 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6764 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6765 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6766 cur_hdr->len += delta;
6767 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6768 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6769
6770 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6771 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6772 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6773 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6774 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6775 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6776 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6777 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6778 }
6779
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6780 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6781 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6782 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6783}
6784
6785
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6786/* Iterate the same filter through all response headers contained in <rtr>.
6787 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6788 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6789int 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]6790{
6791 char term;
6792 char *cur_ptr, *cur_end, *cur_next;
6793 int cur_idx, old_idx, last_hdr;
6794 struct http_txn *txn = &t->txn;
6795 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6796 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6797
6798 last_hdr = 0;
6799
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6800 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6801 old_idx = 0;
6802
6803 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6804 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6805 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6806 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6807 (exp->action == ACT_ALLOW ||
6808 exp->action == ACT_DENY))
6809 return 0;
6810
6811 cur_idx = txn->hdr_idx.v[old_idx].next;
6812 if (!cur_idx)
6813 break;
6814
6815 cur_hdr = &txn->hdr_idx.v[cur_idx];
6816 cur_ptr = cur_next;
6817 cur_end = cur_ptr + cur_hdr->len;
6818 cur_next = cur_end + cur_hdr->cr + 1;
6819
6820 /* Now we have one header between cur_ptr and cur_end,
6821 * and the next header starts at cur_next.
6822 */
6823
6824 /* The annoying part is that pattern matching needs
6825 * that we modify the contents to null-terminate all
6826 * strings before testing them.
6827 */
6828
6829 term = *cur_end;
6830 *cur_end = '\0';
6831
6832 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6833 switch (exp->action) {
6834 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6835 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6836 last_hdr = 1;
6837 break;
6838
6839 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6840 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6841 last_hdr = 1;
6842 break;
6843
6844 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6845 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6846 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6847 /* FIXME: if the user adds a newline in the replacement, the
6848 * index will not be recalculated for now, and the new line
6849 * will not be counted as a new header.
6850 */
6851
6852 cur_end += delta;
6853 cur_next += delta;
6854 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6855 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6856 break;
6857
6858 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6859 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6860 cur_next += delta;
6861
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6862 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6863 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6864 txn->hdr_idx.used--;
6865 cur_hdr->len = 0;
6866 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6867 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6868 break;
6869
6870 }
6871 }
6872 if (cur_end)
6873 *cur_end = term; /* restore the string terminator */
6874
6875 /* keep the link from this header to next one in case of later
6876 * removal of next header.
6877 */
6878 old_idx = cur_idx;
6879 }
6880 return 0;
6881}
6882
6883
6884/* Apply the filter to the status line in the response buffer <rtr>.
6885 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6886 * or -1 if a replacement resulted in an invalid status line.
6887 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6888int 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]6889{
6890 char term;
6891 char *cur_ptr, *cur_end;
6892 int done;
6893 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6894 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6895
6896
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6897 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6898 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6899 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6900 (exp->action == ACT_ALLOW ||
6901 exp->action == ACT_DENY))
6902 return 0;
6903 else if (exp->action == ACT_REMOVE)
6904 return 0;
6905
6906 done = 0;
6907
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6908 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6909 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6910
6911 /* Now we have the status line between cur_ptr and cur_end */
6912
6913 /* The annoying part is that pattern matching needs
6914 * that we modify the contents to null-terminate all
6915 * strings before testing them.
6916 */
6917
6918 term = *cur_end;
6919 *cur_end = '\0';
6920
6921 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6922 switch (exp->action) {
6923 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6924 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6925 done = 1;
6926 break;
6927
6928 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6929 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6930 done = 1;
6931 break;
6932
6933 case ACT_REPLACE:
6934 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6935 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6936 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6937 /* FIXME: if the user adds a newline in the replacement, the
6938 * index will not be recalculated for now, and the new line
6939 * will not be counted as a new header.
6940 */
6941
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6942 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6943 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6944 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6945 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6946 cur_ptr, cur_end + 1,
6947 NULL, NULL);
6948 if (unlikely(!cur_end))
6949 return -1;
6950
6951 /* we have a full respnse and we know that we have either a CR
6952 * or an LF at <ptr>.
6953 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6954 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]6955 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]6956 /* there is no point trying this regex on headers */
6957 return 1;
6958 }
6959 }
6960 *cur_end = term; /* restore the string terminator */
6961 return done;
6962}
6963
6964
6965
6966/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6967 * 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]6968 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6969 * unparsable response.
6970 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6971int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6972{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6973 struct http_txn *txn = &s->txn;
6974 struct hdr_exp *exp;
6975
6976 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6977 int ret;
6978
6979 /*
6980 * The interleaving of transformations and verdicts
6981 * makes it difficult to decide to continue or stop
6982 * the evaluation.
6983 */
6984
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6985 if (txn->flags & TX_SVDENY)
6986 break;
6987
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6988 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6989 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6990 exp->action == ACT_PASS)) {
6991 exp = exp->next;
6992 continue;
6993 }
6994
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6995 /* if this filter had a condition, evaluate it now and skip to
6996 * next filter if the condition does not match.
6997 */
6998 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6999 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]7000 ret = acl_pass(ret);
7001 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7002 ret = !ret;
7003 if (!ret)
7004 continue;
7005 }
7006
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7007 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7008 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7009 if (unlikely(ret < 0))
7010 return -1;
7011
7012 if (likely(ret == 0)) {
7013 /* The filter did not match the response, it can be
7014 * iterated through all headers.
7015 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7016 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7017 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7018 }
7019 return 0;
7020}
7021
7022
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7023/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7024 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7025 * desirable to call it only when needed. This function is also used when we
7026 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7027 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7028void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7029{
7030 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7031 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7032 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7033 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7034 char *hdr_beg, *hdr_end, *hdr_next;
7035 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7036
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7037 /* Iterate through the headers.
7038 * we start with the start line.
7039 */
7040 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7041 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7042
7043 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7044 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7045 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7046
7047 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7048 hdr_beg = hdr_next;
7049 hdr_end = hdr_beg + cur_hdr->len;
7050 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7051
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7052 /* We have one full header between hdr_beg and hdr_end, and the
7053 * next header starts at hdr_next. We're only interested in
7054 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7055 */
7056
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7057 is_cookie2 = 0;
7058 prev = hdr_beg + 10;
7059 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7060 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7061 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7062 if (!val) {
7063 old_idx = cur_idx;
7064 continue;
7065 }
7066 is_cookie2 = 1;
7067 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7068 }
7069
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7070 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7071 * <prev> points to the colon.
7072 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7073 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7074
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7075 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7076 * check-cache is enabled) and we are not interested in checking
7077 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7078 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7079 if (t->be->cookie_name == NULL &&
7080 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7081 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7082 return;
7083
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7084 /* OK so now we know we have to process this response cookie.
7085 * The format of the Set-Cookie header is slightly different
7086 * from the format of the Cookie header in that it does not
7087 * support the comma as a cookie delimiter (thus the header
7088 * cannot be folded) because the Expires attribute described in
7089 * the original Netscape's spec may contain an unquoted date
7090 * with a comma inside. We have to live with this because
7091 * many browsers don't support Max-Age and some browsers don't
7092 * support quoted strings. However the Set-Cookie2 header is
7093 * clean.
7094 *
7095 * We have to keep multiple pointers in order to support cookie
7096 * removal at the beginning, middle or end of header without
7097 * corrupting the header (in case of set-cookie2). A special
7098 * pointer, <scav> points to the beginning of the set-cookie-av
7099 * fields after the first semi-colon. The <next> pointer points
7100 * either to the end of line (set-cookie) or next unquoted comma
7101 * (set-cookie2). All of these headers are valid :
7102 *
7103 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7104 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7105 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7106 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7107 * | | | | | | | | | |
7108 * | | | | | | | | +-> next hdr_end <--+
7109 * | | | | | | | +------------> scav
7110 * | | | | | | +--------------> val_end
7111 * | | | | | +--------------------> val_beg
7112 * | | | | +----------------------> equal
7113 * | | | +------------------------> att_end
7114 * | | +----------------------------> att_beg
7115 * | +------------------------------> prev
7116 * +-----------------------------------------> hdr_beg
7117 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7118
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7119 for (; prev < hdr_end; prev = next) {
7120 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7121
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7122 /* find att_beg */
7123 att_beg = prev + 1;
7124 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7125 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7126
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7127 /* find att_end : this is the first character after the last non
7128 * space before the equal. It may be equal to hdr_end.
7129 */
7130 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7131
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7132 while (equal < hdr_end) {
7133 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7134 break;
7135 if (http_is_spht[(unsigned char)*equal++])
7136 continue;
7137 att_end = equal;
7138 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7139
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7140 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7141 * is between <att_beg> and <equal>, both may be identical.
7142 */
7143
7144 /* look for end of cookie if there is an equal sign */
7145 if (equal < hdr_end && *equal == '=') {
7146 /* look for the beginning of the value */
7147 val_beg = equal + 1;
7148 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7149 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7150
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7151 /* find the end of the value, respecting quotes */
7152 next = find_cookie_value_end(val_beg, hdr_end);
7153
7154 /* make val_end point to the first white space or delimitor after the value */
7155 val_end = next;
7156 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7157 val_end--;
7158 } else {
7159 /* <equal> points to next comma, semi-colon or EOL */
7160 val_beg = val_end = next = equal;
7161 }
7162
7163 if (next < hdr_end) {
7164 /* Set-Cookie2 supports multiple cookies, and <next> points to
7165 * a colon or semi-colon before the end. So skip all attr-value
7166 * pairs and look for the next comma. For Set-Cookie, since
7167 * commas are permitted in values, skip to the end.
7168 */
7169 if (is_cookie2)
7170 next = find_hdr_value_end(next, hdr_end);
7171 else
7172 next = hdr_end;
7173 }
7174
7175 /* Now everything is as on the diagram above */
7176
7177 /* Ignore cookies with no equal sign */
7178 if (equal == val_end)
7179 continue;
7180
7181 /* If there are spaces around the equal sign, we need to
7182 * strip them otherwise we'll get trouble for cookie captures,
7183 * or even for rewrites. Since this happens extremely rarely,
7184 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7185 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7186 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7187 int stripped_before = 0;
7188 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7189
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7190 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7191 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7192 equal += stripped_before;
7193 val_beg += stripped_before;
7194 }
7195
7196 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7197 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7198 val_beg += stripped_after;
7199 stripped_before += stripped_after;
7200 }
7201
7202 val_end += stripped_before;
7203 next += stripped_before;
7204 hdr_end += stripped_before;
7205 hdr_next += stripped_before;
7206 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7207 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7208 }
7209
7210 /* First, let's see if we want to capture this cookie. We check
7211 * that we don't already have a server side cookie, because we
7212 * can only capture one. Also as an optimisation, we ignore
7213 * cookies shorter than the declared name.
7214 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7215 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7216 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7217 (val_end - att_beg >= t->fe->capture_namelen) &&
7218 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7219 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7220 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7221 Alert("HTTP logging : out of memory.\n");
7222 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7223 else {
7224 if (log_len > t->fe->capture_len)
7225 log_len = t->fe->capture_len;
7226 memcpy(txn->srv_cookie, att_beg, log_len);
7227 txn->srv_cookie[log_len] = 0;
7228 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7229 }
7230
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7231 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7232 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7233 if (!(t->flags & SN_IGNORE_PRST) &&
7234 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7235 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7236 /* assume passive cookie by default */
7237 txn->flags &= ~TX_SCK_MASK;
7238 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7239
7240 /* If the cookie is in insert mode on a known server, we'll delete
7241 * this occurrence because we'll insert another one later.
7242 * 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]7243 * a direct access.
7244 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7245 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7246 /* The "preserve" flag was set, we don't want to touch the
7247 * server's cookie.
7248 */
7249 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7250 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7251 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7252 /* this cookie must be deleted */
7253 if (*prev == ':' && next == hdr_end) {
7254 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7255 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7256 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7257 txn->hdr_idx.used--;
7258 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7259 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7260 hdr_next += delta;
7261 http_msg_move_end(&txn->rsp, delta);
7262 /* note: while both invalid now, <next> and <hdr_end>
7263 * are still equal, so the for() will stop as expected.
7264 */
7265 } else {
7266 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7267 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7268 next = prev;
7269 hdr_end += delta;
7270 hdr_next += delta;
7271 cur_hdr->len += delta;
7272 http_msg_move_end(&txn->rsp, delta);
7273 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7274 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7275 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7276 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7277 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7278 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7279 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7280 * with this server since we know it.
7281 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7282 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7283 next += delta;
7284 hdr_end += delta;
7285 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7286 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7287 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7288
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7289 txn->flags &= ~TX_SCK_MASK;
7290 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7291 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7292 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7293 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7294 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7295 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7296 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7297 next += delta;
7298 hdr_end += delta;
7299 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7300 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7301 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7302
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7303 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7304 txn->flags &= ~TX_SCK_MASK;
7305 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7306 }
7307 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7308 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7309 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7310 int cmp_len, value_len;
7311 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7312
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7313 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7314 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7315 value_begin = att_beg + t->be->appsession_name_len;
7316 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]7317 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7318 cmp_len = att_end - att_beg;
7319 value_begin = val_beg;
7320 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7321 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7322
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7323 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7324 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7325 /* free a possibly previously allocated memory */
7326 pool_free2(apools.sessid, txn->sessid);
7327
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7328 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7329 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7330 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7331 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7332 return;
7333 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7334 memcpy(txn->sessid, value_begin, value_len);
7335 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7336 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7337 }
7338 /* that's done for this cookie, check the next one on the same
7339 * line when next != hdr_end (only if is_cookie2).
7340 */
7341 }
7342 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7343 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7344 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7345
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7346 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7347 appsess *asession = NULL;
7348 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7349 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7350 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7351 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7352 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7353 Alert("Not enough Memory process_srv():asession:calloc().\n");
7354 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7355 return;
7356 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7357 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7358
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7359 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7360 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7361 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]7362 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7363 return;
7364 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7365 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7366 asession->sessid[t->be->appsession_len] = 0;
7367
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7368 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7369 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7370 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7371 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]7372 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7373 return;
7374 }
7375 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7376 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7377
7378 asession->request_count = 0;
7379 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7380 }
7381
7382 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7383 asession->request_count++;
7384 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7385}
7386
7387
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7388/*
7389 * Check if response is cacheable or not. Updates t->flags.
7390 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7391void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7392{
7393 struct http_txn *txn = &t->txn;
7394 char *p1, *p2;
7395
7396 char *cur_ptr, *cur_end, *cur_next;
7397 int cur_idx;
7398
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7399 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7400 return;
7401
7402 /* Iterate through the headers.
7403 * we start with the start line.
7404 */
7405 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7406 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7407
7408 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7409 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7410 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7411
7412 cur_hdr = &txn->hdr_idx.v[cur_idx];
7413 cur_ptr = cur_next;
7414 cur_end = cur_ptr + cur_hdr->len;
7415 cur_next = cur_end + cur_hdr->cr + 1;
7416
7417 /* We have one full header between cur_ptr and cur_end, and the
7418 * next header starts at cur_next. We're only interested in
7419 * "Cookie:" headers.
7420 */
7421
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7422 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7423 if (val) {
7424 if ((cur_end - (cur_ptr + val) >= 8) &&
7425 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7426 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7427 return;
7428 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7429 }
7430
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7431 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7432 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7433 continue;
7434
7435 /* OK, right now we know we have a cache-control header at cur_ptr */
7436
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7437 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7438
7439 if (p1 >= cur_end) /* no more info */
7440 continue;
7441
7442 /* p1 is at the beginning of the value */
7443 p2 = p1;
7444
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7445 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7446 p2++;
7447
7448 /* we have a complete value between p1 and p2 */
7449 if (p2 < cur_end && *p2 == '=') {
7450 /* we have something of the form no-cache="set-cookie" */
7451 if ((cur_end - p1 >= 21) &&
7452 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7453 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7454 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7455 continue;
7456 }
7457
7458 /* OK, so we know that either p2 points to the end of string or to a comma */
7459 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7460 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7461 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7462 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7463 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7464 return;
7465 }
7466
7467 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7468 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7469 continue;
7470 }
7471 }
7472}
7473
7474
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7475/*
7476 * Try to retrieve a known appsession in the URI, then the associated server.
7477 * If the server is found, it's assigned to the session.
7478 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7479void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7480{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7481 char *end_params, *first_param, *cur_param, *next_param;
7482 char separator;
7483 int value_len;
7484
7485 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7486
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7487 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7488 (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]7489 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7490 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7491
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7492 first_param = NULL;
7493 switch (mode) {
7494 case PR_O2_AS_M_PP:
7495 first_param = memchr(begin, ';', len);
7496 break;
7497 case PR_O2_AS_M_QS:
7498 first_param = memchr(begin, '?', len);
7499 break;
7500 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7501
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7502 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7503 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7504 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7505
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7506 switch (mode) {
7507 case PR_O2_AS_M_PP:
7508 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7509 end_params = (char *) begin + len;
7510 }
7511 separator = ';';
7512 break;
7513 case PR_O2_AS_M_QS:
7514 end_params = (char *) begin + len;
7515 separator = '&';
7516 break;
7517 default:
7518 /* unknown mode, shouldn't happen */
7519 return;
7520 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7521
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7522 cur_param = next_param = end_params;
7523 while (cur_param > first_param) {
7524 cur_param--;
7525 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7526 /* let's see if this is the appsession parameter */
7527 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7528 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7529 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7530 /* Cool... it's the right one */
7531 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7532 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7533 if (value_len > 0) {
7534 manage_client_side_appsession(t, cur_param, value_len);
7535 }
7536 break;
7537 }
7538 next_param = cur_param;
7539 }
7540 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7541#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7542 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7543 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7544#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7545}
7546
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7547/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7548 * 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]7549 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7550 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7551 * 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]7552 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7553 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7554 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7555 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7556int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7557{
7558 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7559 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7560 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7561 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7562
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7563 if (!uri_auth)
7564 return 0;
7565
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7566 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]7567 return 0;
7568
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7569 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7570 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7571
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7572 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7573 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7574 return 0;
7575
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7576 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7577 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7578 return 0;
7579
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7580 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7581 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7582 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7583 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7584 break;
7585 }
7586 h++;
7587 }
7588
7589 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7590 h = uri + uri_auth->uri_len;
7591 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7592 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7593 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7594 break;
7595 }
7596 h++;
7597 }
7598 }
7599
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7600 h = uri + uri_auth->uri_len;
7601 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7602 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7603 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7604 break;
7605 }
7606 h++;
7607 }
7608
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7609 h = uri + uri_auth->uri_len;
7610 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7611 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7612 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7613 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7614 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7615 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7616 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7617 si->applet.ctx.stats.st_code = i;
7618 break;
7619 }
7620 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7621 break;
7622 }
7623 h++;
7624 }
7625
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7626 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7627
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7628 return 1;
7629}
7630
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7631/*
7632 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7633 * By default it tries to report the error position as msg->err_pos. However if
7634 * this one is not set, it will then report msg->next, which is the last known
7635 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7636 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7637 */
7638void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7639 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7640 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7641{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7642 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7643 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7644
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7645 es->len = MIN(chn->buf->i, sizeof(es->buf));
7646 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7647 len1 = MIN(len1, es->len);
7648 len2 = es->len - len1; /* remaining data if buffer wraps */
7649
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7650 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7651 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7652 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7653
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7654 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7655 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7656 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7657 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7658
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7659 es->when = date; // user-visible date
7660 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7661 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7662 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7663 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7664 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7665 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7666 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7667 es->s_flags = s->flags;
7668 es->t_flags = s->txn.flags;
7669 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7670 es->b_out = chn->buf->o;
7671 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7672 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7673 es->m_clen = msg->chunk_len;
7674 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7675}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7676
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7677/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7678 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7679 * performed over the whole headers. Otherwise it must contain a valid header
7680 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7681 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7682 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7683 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7684 * -1.
7685 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7686 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7687unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7688 struct hdr_idx *idx, int occ,
7689 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7690{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7691 struct hdr_ctx local_ctx;
7692 char *ptr_hist[MAX_HDR_HISTORY];
7693 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7694 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7695 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7696
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7697 if (!ctx) {
7698 local_ctx.idx = 0;
7699 ctx = &local_ctx;
7700 }
7701
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7702 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7703 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7704 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7705 occ--;
7706 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7707 *vptr = ctx->line + ctx->val;
7708 *vlen = ctx->vlen;
7709 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7710 }
7711 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7712 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7713 }
7714
7715 /* negative occurrence, we scan all the list then walk back */
7716 if (-occ > MAX_HDR_HISTORY)
7717 return 0;
7718
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7719 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7720 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7721 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7722 len_hist[hist_ptr] = ctx->vlen;
7723 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7724 hist_ptr = 0;
7725 found++;
7726 }
7727 if (-occ > found)
7728 return 0;
7729 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7730 * find occurrence -occ, so we have to check [hist_ptr+occ].
7731 */
7732 hist_ptr += occ;
7733 if (hist_ptr >= MAX_HDR_HISTORY)
7734 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7735 *vptr = ptr_hist[hist_ptr];
7736 *vlen = len_hist[hist_ptr];
7737 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7738}
7739
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7740/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7741 * Print a debug line with a header. Always stop at the first CR or LF char,
7742 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7743 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7744 */
7745void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7746{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7747 int max;
7748 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7749 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7750 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7751
7752 for (max = 0; start + max < end; max++)
7753 if (start[max] == '\r' || start[max] == '\n')
7754 break;
7755
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7756 UBOUND(max, trash.size - trash.len - 3);
7757 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7758 trash.str[trash.len++] = '\n';
7759 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7760}
7761
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7762/*
7763 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7764 * the required fields are properly allocated and that we only need to (re)init
7765 * them. This should be used before processing any new request.
7766 */
7767void http_init_txn(struct session *s)
7768{
7769 struct http_txn *txn = &s->txn;
7770 struct proxy *fe = s->fe;
7771
7772 txn->flags = 0;
7773 txn->status = -1;
7774
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7775 global.req_count++;
7776
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7777 txn->cookie_first_date = 0;
7778 txn->cookie_last_date = 0;
7779
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7780 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7781 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7782 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7783 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7784 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7785 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7786 txn->req.chunk_len = 0LL;
7787 txn->req.body_len = 0LL;
7788 txn->rsp.chunk_len = 0LL;
7789 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7790 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7791 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7792 txn->req.chn = s->req;
7793 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7794
7795 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7796
7797 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7798 if (fe->options2 & PR_O2_REQBUG_OK)
7799 txn->req.err_pos = -1; /* let buggy requests pass */
7800
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7801 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7802 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7803
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7804 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7805 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7806
7807 if (txn->hdr_idx.v)
7808 hdr_idx_init(&txn->hdr_idx);
7809}
7810
7811/* to be used at the end of a transaction */
7812void http_end_txn(struct session *s)
7813{
7814 struct http_txn *txn = &s->txn;
7815
7816 /* these ones will have been dynamically allocated */
7817 pool_free2(pool2_requri, txn->uri);
7818 pool_free2(pool2_capture, txn->cli_cookie);
7819 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7820 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7821 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7822
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7823 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7824 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7825 txn->uri = NULL;
7826 txn->srv_cookie = NULL;
7827 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7828
7829 if (txn->req.cap) {
7830 struct cap_hdr *h;
7831 for (h = s->fe->req_cap; h; h = h->next)
7832 pool_free2(h->pool, txn->req.cap[h->index]);
7833 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7834 }
7835
7836 if (txn->rsp.cap) {
7837 struct cap_hdr *h;
7838 for (h = s->fe->rsp_cap; h; h = h->next)
7839 pool_free2(h->pool, txn->rsp.cap[h->index]);
7840 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7841 }
7842
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7843}
7844
7845/* to be used at the end of a transaction to prepare a new one */
7846void http_reset_txn(struct session *s)
7847{
7848 http_end_txn(s);
7849 http_init_txn(s);
7850
7851 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7852 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7853 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7854 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7855 /* re-init store persistence */
7856 s->store_count = 0;
7857
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7858 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7859
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7860 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7861
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7862 /* We must trim any excess data from the response buffer, because we
7863 * may have blocked an invalid response from a server that we don't
7864 * want to accidentely forward once we disable the analysers, nor do
7865 * we want those data to come along with next response. A typical
7866 * example of such data would be from a buggy server responding to
7867 * a HEAD with some data, or sending more than the advertised
7868 * content-length.
7869 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7870 if (unlikely(s->rep->buf->i))
7871 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7872
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7873 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7874 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7875
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7876 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7877 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7878
7879 s->req->rex = TICK_ETERNITY;
7880 s->req->wex = TICK_ETERNITY;
7881 s->req->analyse_exp = TICK_ETERNITY;
7882 s->rep->rex = TICK_ETERNITY;
7883 s->rep->wex = TICK_ETERNITY;
7884 s->rep->analyse_exp = TICK_ETERNITY;
7885}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7886
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7887void free_http_req_rules(struct list *r) {
7888 struct http_req_rule *tr, *pr;
7889
7890 list_for_each_entry_safe(pr, tr, r, list) {
7891 LIST_DEL(&pr->list);
7892 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7893 free(pr->http_auth.realm);
7894
7895 free(pr);
7896 }
7897}
7898
7899struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7900{
7901 struct http_req_rule *rule;
7902 int cur_arg;
7903
7904 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7905 if (!rule) {
7906 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7907 return NULL;
7908 }
7909
7910 if (!*args[0]) {
7911 goto req_error_parsing;
7912 } else if (!strcmp(args[0], "allow")) {
7913 rule->action = HTTP_REQ_ACT_ALLOW;
7914 cur_arg = 1;
7915 } else if (!strcmp(args[0], "deny")) {
7916 rule->action = HTTP_REQ_ACT_DENY;
7917 cur_arg = 1;
7918 } else if (!strcmp(args[0], "auth")) {
7919 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7920 cur_arg = 1;
7921
7922 while(*args[cur_arg]) {
7923 if (!strcmp(args[cur_arg], "realm")) {
7924 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7925 cur_arg+=2;
7926 continue;
7927 } else
7928 break;
7929 }
7930 } else {
7931req_error_parsing:
7932 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7933 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7934 return NULL;
7935 }
7936
7937 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7938 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7939 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7940
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7941 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7942 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7943 file, linenum, args[0], errmsg);
7944 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7945 return NULL;
7946 }
7947 rule->cond = cond;
7948 }
7949 else if (*args[cur_arg]) {
7950 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7951 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7952 file, linenum, args[0], args[cur_arg]);
7953 return NULL;
7954 }
7955
7956 return rule;
7957}
7958
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7959/************************************************************************/
7960/* The code below is dedicated to ACL parsing and matching */
7961/************************************************************************/
7962
7963
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7964/* This function ensures that the prerequisites for an L7 fetch are ready,
7965 * which means that a request or response is ready. If some data is missing,
7966 * 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]7967 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7968 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7969 *
7970 * The function returns :
7971 * 0 if some data is missing or if the requested data cannot be fetched
7972 * -1 if it is certain that we'll never have any HTTP message there
7973 * 1 if an HTTP message is ready
7974 */
7975static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7976acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7977 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7978{
7979 struct http_txn *txn = l7;
7980 struct http_msg *msg = &txn->req;
7981
7982 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7983 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7984 */
7985
7986 if (unlikely(!s || !txn))
7987 return 0;
7988
7989 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7990 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7991
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7992 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7993 if (unlikely(!s->req))
7994 return 0;
7995
7996 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7997 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7998 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7999 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8000 return -1;
8001 }
8002
8003 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8004 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8005 http_msg_analyzer(msg, &txn->hdr_idx);
8006
8007 /* Still no valid request ? */
8008 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8009 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8010 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8011 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8012 return -1;
8013 }
8014 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8015 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8016 return 0;
8017 }
8018
8019 /* OK we just got a valid HTTP request. We have some minor
8020 * preparation to perform so that further checks can rely
8021 * on HTTP tests.
8022 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8023 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8024 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8025 s->flags |= SN_REDIRECTABLE;
8026
8027 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8028 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8029 return -1;
8030 }
8031 }
8032
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8033 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8034 return 0; /* data might have moved and indexes changed */
8035
8036 /* otherwise everything's ready for the request */
8037 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8038 else {
8039 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8040 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8041 return 0;
8042 }
8043
8044 /* everything's OK */
8045 return 1;
8046}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8047
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8048#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8049 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]8050
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8051#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8052 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]8053
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8054
8055/* 1. Check on METHOD
8056 * We use the pre-parsed method if it is known, and store its number as an
8057 * integer. If it is unknown, we use the pointer and the length.
8058 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8059static 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]8060{
8061 int len, meth;
8062
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8063 len = strlen(*text);
8064 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8065
8066 pattern->val.i = meth;
8067 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8068 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8069 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8070 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8071 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8072 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8073 pattern->len = len;
8074 }
8075 return 1;
8076}
8077
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8078/* This function fetches the method of current HTTP request and stores
8079 * it in the global pattern struct as a chunk. There are two possibilities :
8080 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8081 * in <len> and <ptr> is NULL ;
8082 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8083 * <len> to its length.
8084 * This is intended to be used with acl_match_meth() only.
8085 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8086static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8087acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8088 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8089{
8090 int meth;
8091 struct http_txn *txn = l7;
8092
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8093 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8094
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8095 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8096 smp->type = SMP_T_UINT;
8097 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8098 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8099 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8100 /* ensure the indexes are not affected */
8101 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8102 smp->type = SMP_T_CSTR;
8103 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8104 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8105 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8106 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8107 return 1;
8108}
8109
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8110/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8111static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8112{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8113 int icase;
8114
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8115
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8116 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8117 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8118 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8119 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8120 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8121 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8122
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8123 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8124 if (pattern->val.i != HTTP_METH_OTHER)
8125 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8126
8127 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8128 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8129 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8130
8131 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8132 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8133 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8134 return ACL_PAT_FAIL;
8135 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8136}
8137
8138/* 2. Check on Request/Status Version
8139 * We simply compare strings here.
8140 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8141static 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]8142{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8143 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8144 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8145 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8146 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8147 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8148 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8149 return 1;
8150}
8151
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8152static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8153acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8154 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8155{
8156 struct http_txn *txn = l7;
8157 char *ptr;
8158 int len;
8159
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8160 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8161
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8162 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8163 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8164
8165 while ((len-- > 0) && (*ptr++ != '/'));
8166 if (len <= 0)
8167 return 0;
8168
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8169 smp->type = SMP_T_CSTR;
8170 smp->data.str.str = ptr;
8171 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8172
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8173 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8174 return 1;
8175}
8176
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8177static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8178acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8179 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8180{
8181 struct http_txn *txn = l7;
8182 char *ptr;
8183 int len;
8184
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8185 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8186
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8187 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8188 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8189
8190 while ((len-- > 0) && (*ptr++ != '/'));
8191 if (len <= 0)
8192 return 0;
8193
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8194 smp->type = SMP_T_CSTR;
8195 smp->data.str.str = ptr;
8196 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8197
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8198 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8199 return 1;
8200}
8201
8202/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8203static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8204acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8205 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8206{
8207 struct http_txn *txn = l7;
8208 char *ptr;
8209 int len;
8210
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8211 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8212
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8213 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8214 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8215
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8216 smp->type = SMP_T_UINT;
8217 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8218 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8219 return 1;
8220}
8221
8222/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8223static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8224smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8225 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8226{
8227 struct http_txn *txn = l7;
8228
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8229 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8230
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8231 smp->type = SMP_T_CSTR;
8232 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8233 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8234 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8235 return 1;
8236}
8237
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8238static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8239smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8240 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8241{
8242 struct http_txn *txn = l7;
8243
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8244 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8245
8246 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8247 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8248 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8249 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8250 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8251 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8252
8253 /*
8254 * If we are parsing url in frontend space, we prepare backend stage
8255 * to not parse again the same url ! optimization lazyness...
8256 */
8257 if (px->options & PR_O_HTTP_PROXY)
8258 l4->flags |= SN_ADDR_SET;
8259
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8260 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8261 return 1;
8262}
8263
8264static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8265smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8266 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8267{
8268 struct http_txn *txn = l7;
8269
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8270 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8271
8272 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8273 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]8274 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8275 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]8276
8277 if (px->options & PR_O_HTTP_PROXY)
8278 l4->flags |= SN_ADDR_SET;
8279
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8280 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8281 return 1;
8282}
8283
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8284/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8285 * Accepts an optional argument of type string containing the header field name,
8286 * and an optional argument of type signed or unsigned integer to request an
8287 * explicit occurrence of the header. Note that in the event of a missing name,
8288 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8289 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8290static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8291smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8292 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8293{
8294 struct http_txn *txn = l7;
8295 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8296 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8297 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]8298 int occ = 0;
8299 const char *name_str = NULL;
8300 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8301
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8302 if (args) {
8303 if (args[0].type != ARGT_STR)
8304 return 0;
8305 name_str = args[0].data.str.str;
8306 name_len = args[0].data.str.len;
8307
8308 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8309 occ = args[1].data.uint;
8310 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8311
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8312 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8313
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8314 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8315 /* search for header from the beginning */
8316 ctx->idx = 0;
8317
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8318 if (!occ && !(opt & SMP_OPT_ITERATE))
8319 /* no explicit occurrence and single fetch => last header by default */
8320 occ = -1;
8321
8322 if (!occ)
8323 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8324 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8325
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8326 smp->type = SMP_T_CSTR;
8327 smp->flags |= SMP_F_VOL_HDR;
8328 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]8329 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8330
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8331 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8332 return 0;
8333}
8334
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8335/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8336 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8337 */
8338static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8339smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8340 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8341{
8342 struct http_txn *txn = l7;
8343 struct hdr_idx *idx = &txn->hdr_idx;
8344 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8345 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]8346 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8347
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8348 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8349 return 0;
8350
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8351 CHECK_HTTP_MESSAGE_FIRST();
8352
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8353 ctx.idx = 0;
8354 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8355 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]8356 cnt++;
8357
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8358 smp->type = SMP_T_UINT;
8359 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8360 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8361 return 1;
8362}
8363
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8364/* Fetch an HTTP header's integer value. The integer value is returned. It
8365 * takes a mandatory argument of type string and an optional one of type int
8366 * to designate a specific occurrence. It returns an unsigned integer, which
8367 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8368 */
8369static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8370smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8371 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8372{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8373 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8374
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8375 if (ret > 0) {
8376 smp->type = SMP_T_UINT;
8377 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8378 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8379
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8380 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8381}
8382
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8383/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8384 * and an optional one of type int to designate a specific occurrence.
8385 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8386 */
8387static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8388smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8389 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8390{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8391 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8392
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8393 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8394 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8395 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8396 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8397 } else {
8398 struct chunk *temp = sample_get_trash_chunk();
8399 if (smp->data.str.len < temp->size - 1) {
8400 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8401 temp->str[smp->data.str.len] = '\0';
8402 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8403 smp->type = SMP_T_IPV6;
8404 break;
8405 }
8406 }
8407 }
8408
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8409 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8410 if (!(smp->flags & SMP_F_NOT_LAST))
8411 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8412 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8413 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8414}
8415
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8416/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8417 * the first '/' after the possible hostname, and ends before the possible '?'.
8418 */
8419static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8420smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8421 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8422{
8423 struct http_txn *txn = l7;
8424 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8425
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8426 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8427
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8428 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]8429 ptr = http_get_path(txn);
8430 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8431 return 0;
8432
8433 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8434 smp->type = SMP_T_CSTR;
8435 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8436
8437 while (ptr < end && *ptr != '?')
8438 ptr++;
8439
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8440 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8441 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8442 return 1;
8443}
8444
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8445/* This produces a concatenation of the first occurrence of the Host header
8446 * followed by the path component if it begins with a slash ('/'). This means
8447 * that '*' will not be added, resulting in exactly the first Host entry.
8448 * If no Host header is found, then the path is returned as-is. The returned
8449 * value is stored in the trash so it does not need to be marked constant.
8450 */
8451static int
8452smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8453 const struct arg *args, struct sample *smp)
8454{
8455 struct http_txn *txn = l7;
8456 char *ptr, *end, *beg;
8457 struct hdr_ctx ctx;
8458
8459 CHECK_HTTP_MESSAGE_FIRST();
8460
8461 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8462 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]8463 !ctx.vlen)
8464 return smp_fetch_path(px, l4, l7, opt, args, smp);
8465
8466 /* 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]8467 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8468 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8469 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8470 smp->data.str.len = ctx.vlen;
8471
8472 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8473 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]8474 beg = http_get_path(txn);
8475 if (!beg)
8476 beg = end;
8477
8478 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8479
8480 if (beg < ptr && *beg == '/') {
8481 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8482 smp->data.str.len += ptr - beg;
8483 }
8484
8485 smp->flags = SMP_F_VOL_1ST;
8486 return 1;
8487}
8488
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8489static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8490acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8491 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8492{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8493 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8494 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8495 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8496
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8497 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8498
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8499 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8500 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8501 return 1;
8502}
8503
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8504/* return a valid test if the current request is the first one on the connection */
8505static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8506acl_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]8507 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8508{
8509 if (!s)
8510 return 0;
8511
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8512 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8513 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8514 return 1;
8515}
8516
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8517/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8518static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8519acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8520 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8521{
8522
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8523 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8524 return 0;
8525
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8526 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8527
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8528 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8529 return 0;
8530
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8531 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8532 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]8533 return 1;
8534}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8535
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8536/* Accepts exactly 1 argument of type userlist */
8537static int
8538acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8539 const struct arg *args, struct sample *smp)
8540{
8541
8542 if (!args || args->type != ARGT_USR)
8543 return 0;
8544
8545 CHECK_HTTP_MESSAGE_FIRST();
8546
8547 if (!get_http_auth(l4))
8548 return 0;
8549
8550 /* acl_match_auth() will need several information at once */
8551 smp->ctx.a[0] = args->data.usr; /* user list */
8552 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8553 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8554
8555 /* if the user does not belong to the userlist or has a wrong password,
8556 * report that it unconditionally does not match. Otherwise we return
8557 * a non-zero integer which will be ignored anyway since all the params
8558 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8559 */
8560 smp->type = SMP_T_BOOL;
8561 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8562 if (smp->data.uint)
8563 smp->type = SMP_T_UINT;
8564
8565 return 1;
8566}
8567
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8568/* Try to find the next occurrence of a cookie name in a cookie header value.
8569 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8570 * the cookie value is returned into *value and *value_l, and the function
8571 * returns a pointer to the next pointer to search from if the value was found.
8572 * Otherwise if the cookie was not found, NULL is returned and neither value
8573 * nor value_l are touched. The input <hdr> string should first point to the
8574 * header's value, and the <hdr_end> pointer must point to the first character
8575 * not part of the value. <list> must be non-zero if value may represent a list
8576 * of values (cookie headers). This makes it faster to abort parsing when no
8577 * list is expected.
8578 */
8579static char *
8580extract_cookie_value(char *hdr, const char *hdr_end,
8581 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8582 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8583{
8584 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8585 char *next;
8586
8587 /* we search at least a cookie name followed by an equal, and more
8588 * generally something like this :
8589 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8590 */
8591 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8592 /* Iterate through all cookies on this line */
8593
8594 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8595 att_beg++;
8596
8597 /* find att_end : this is the first character after the last non
8598 * space before the equal. It may be equal to hdr_end.
8599 */
8600 equal = att_end = att_beg;
8601
8602 while (equal < hdr_end) {
8603 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8604 break;
8605 if (http_is_spht[(unsigned char)*equal++])
8606 continue;
8607 att_end = equal;
8608 }
8609
8610 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8611 * is between <att_beg> and <equal>, both may be identical.
8612 */
8613
8614 /* look for end of cookie if there is an equal sign */
8615 if (equal < hdr_end && *equal == '=') {
8616 /* look for the beginning of the value */
8617 val_beg = equal + 1;
8618 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8619 val_beg++;
8620
8621 /* find the end of the value, respecting quotes */
8622 next = find_cookie_value_end(val_beg, hdr_end);
8623
8624 /* make val_end point to the first white space or delimitor after the value */
8625 val_end = next;
8626 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8627 val_end--;
8628 } else {
8629 val_beg = val_end = next = equal;
8630 }
8631
8632 /* We have nothing to do with attributes beginning with '$'. However,
8633 * they will automatically be removed if a header before them is removed,
8634 * since they're supposed to be linked together.
8635 */
8636 if (*att_beg == '$')
8637 continue;
8638
8639 /* Ignore cookies with no equal sign */
8640 if (equal == next)
8641 continue;
8642
8643 /* Now we have the cookie name between att_beg and att_end, and
8644 * its value between val_beg and val_end.
8645 */
8646
8647 if (att_end - att_beg == cookie_name_l &&
8648 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8649 /* let's return this value and indicate where to go on from */
8650 *value = val_beg;
8651 *value_l = val_end - val_beg;
8652 return next + 1;
8653 }
8654
8655 /* Set-Cookie headers only have the name in the first attr=value part */
8656 if (!list)
8657 break;
8658 }
8659
8660 return NULL;
8661}
8662
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8663/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8664 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8665 * 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]8666 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8667 * 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]8668 * Accepts exactly 1 argument of type string. If the input options indicate
8669 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8670 */
8671static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8672smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8673 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8674{
8675 struct http_txn *txn = l7;
8676 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8677 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8678 const struct http_msg *msg;
8679 const char *hdr_name;
8680 int hdr_name_len;
8681 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8682 int occ = 0;
8683 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8684
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8685 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8686 return 0;
8687
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8688 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8689
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8690 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8691 msg = &txn->req;
8692 hdr_name = "Cookie";
8693 hdr_name_len = 6;
8694 } else {
8695 msg = &txn->rsp;
8696 hdr_name = "Set-Cookie";
8697 hdr_name_len = 10;
8698 }
8699
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8700 if (!occ && !(opt & SMP_OPT_ITERATE))
8701 /* no explicit occurrence and single fetch => last cookie by default */
8702 occ = -1;
8703
8704 /* OK so basically here, either we want only one value and it's the
8705 * last one, or we want to iterate over all of them and we fetch the
8706 * next one.
8707 */
8708
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8709 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8710 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8711 /* search for the header from the beginning, we must first initialize
8712 * the search parameters.
8713 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8714 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8715 ctx->idx = 0;
8716 }
8717
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8718 smp->flags |= SMP_F_VOL_HDR;
8719
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8720 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8721 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8722 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8723 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8724 goto out;
8725
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8726 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8727 continue;
8728
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8729 smp->ctx.a[0] = ctx->line + ctx->val;
8730 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8731 }
8732
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8733 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8734 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]8735 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8736 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8737 &smp->data.str.str,
8738 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8739 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8740 found = 1;
8741 if (occ >= 0) {
8742 /* one value was returned into smp->data.str.{str,len} */
8743 smp->flags |= SMP_F_NOT_LAST;
8744 return 1;
8745 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8746 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8747 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8748 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8749 /* all cookie headers and values were scanned. If we're looking for the
8750 * last occurrence, we may return it now.
8751 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8752 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8753 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8754 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8755}
8756
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8757/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8758 * 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]8759 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8760 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8761 */
8762static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8763acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8764 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8765{
8766 struct http_txn *txn = l7;
8767 struct hdr_idx *idx = &txn->hdr_idx;
8768 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8769 const struct http_msg *msg;
8770 const char *hdr_name;
8771 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8772 int cnt;
8773 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8774 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8775
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8776 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8777 return 0;
8778
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8779 CHECK_HTTP_MESSAGE_FIRST();
8780
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8781 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8782 msg = &txn->req;
8783 hdr_name = "Cookie";
8784 hdr_name_len = 6;
8785 } else {
8786 msg = &txn->rsp;
8787 hdr_name = "Set-Cookie";
8788 hdr_name_len = 10;
8789 }
8790
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8791 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8792 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8793 ctx.idx = 0;
8794 cnt = 0;
8795
8796 while (1) {
8797 /* Note: val_beg == NULL every time we need to fetch a new header */
8798 if (!val_beg) {
8799 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8800 break;
8801
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8802 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8803 continue;
8804
8805 val_beg = ctx.line + ctx.val;
8806 val_end = val_beg + ctx.vlen;
8807 }
8808
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8809 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8810 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8811 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8812 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8813 &smp->data.str.str,
8814 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8815 cnt++;
8816 }
8817 }
8818
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8819 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8820 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8821 return 1;
8822}
8823
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8824/* Fetch an cookie's integer value. The integer value is returned. It
8825 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8826 */
8827static int
8828smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8829 const struct arg *args, struct sample *smp)
8830{
8831 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8832
8833 if (ret > 0) {
8834 smp->type = SMP_T_UINT;
8835 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8836 }
8837
8838 return ret;
8839}
8840
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8841/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8842/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8843/************************************************************************/
8844
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8845/*
8846 * Given a path string and its length, find the position of beginning of the
8847 * query string. Returns NULL if no query string is found in the path.
8848 *
8849 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8850 *
8851 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8852 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8853static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8854{
8855 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8856
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8857 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8858 return p ? p + 1 : NULL;
8859}
8860
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8861static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8862{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8863 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8864}
8865
8866/*
8867 * Given a url parameter, find the starting position of the first occurence,
8868 * or NULL if the parameter is not found.
8869 *
8870 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8871 * the function will return query_string+8.
8872 */
8873static char*
8874find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8875 char* url_param_name, size_t url_param_name_l,
8876 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8877{
8878 char *pos, *last;
8879
8880 pos = query_string;
8881 last = query_string + query_string_l - url_param_name_l - 1;
8882
8883 while (pos <= last) {
8884 if (pos[url_param_name_l] == '=') {
8885 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8886 return pos;
8887 pos += url_param_name_l + 1;
8888 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8889 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8890 pos++;
8891 pos++;
8892 }
8893 return NULL;
8894}
8895
8896/*
8897 * Given a url parameter name, returns its value and size into *value and
8898 * *value_l respectively, and returns non-zero. If the parameter is not found,
8899 * zero is returned and value/value_l are not touched.
8900 */
8901static int
8902find_url_param_value(char* path, size_t path_l,
8903 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8904 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8905{
8906 char *query_string, *qs_end;
8907 char *arg_start;
8908 char *value_start, *value_end;
8909
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8910 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8911 if (!query_string)
8912 return 0;
8913
8914 qs_end = path + path_l;
8915 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8916 url_param_name, url_param_name_l,
8917 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8918 if (!arg_start)
8919 return 0;
8920
8921 value_start = arg_start + url_param_name_l + 1;
8922 value_end = value_start;
8923
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8924 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8925 value_end++;
8926
8927 *value = value_start;
8928 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8929 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8930}
8931
8932static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8933smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8934 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8935{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8936 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8937 struct http_txn *txn = l7;
8938 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8939
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8940 if (!args || args[0].type != ARGT_STR ||
8941 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8942 return 0;
8943
8944 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8945
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8946 if (args[1].type)
8947 delim = *args[1].data.str.str;
8948
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8949 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]8950 args->data.str.str, args->data.str.len,
8951 &smp->data.str.str, &smp->data.str.len,
8952 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8953 return 0;
8954
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8955 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8956 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8957 return 1;
8958}
8959
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8960/* Return the signed integer value for the specified url parameter (see url_param
8961 * above).
8962 */
8963static int
8964smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8965 const struct arg *args, struct sample *smp)
8966{
8967 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8968
8969 if (ret > 0) {
8970 smp->type = SMP_T_UINT;
8971 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8972 }
8973
8974 return ret;
8975}
8976
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8977/* This function is used to validate the arguments passed to any "hdr" fetch
8978 * keyword. These keywords support an optional positive or negative occurrence
8979 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8980 * is assumed that the types are already the correct ones. Returns 0 on error,
8981 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8982 * error message in case of error, that the caller is responsible for freeing.
8983 * The initial location must either be freeable or NULL.
8984 */
8985static int val_hdr(struct arg *arg, char **err_msg)
8986{
8987 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8988 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8989 return 0;
8990 }
8991 return 1;
8992}
8993
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8994/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8995/* All supported ACL keywords must be declared here. */
8996/************************************************************************/
8997
8998/* Note: must not be declared <const> as its list will be overwritten.
8999 * Please take care of keeping this list alphabetically sorted.
9000 */
9001static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9002 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9003 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9004 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9005 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9006 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9007 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9008 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9009 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
9010
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9011 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9012 { "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]9013 { "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]9014 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9015 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9016 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9017 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9018 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9019 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9020 { "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]9021
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9022 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9023 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9024 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9025 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9026 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9027 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9028 { "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 },
9029 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9030 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9031 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9032 { "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]9033
9034 { "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]9035 { "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]9036 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9037
9038 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
9039
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9040 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9041 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9042 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9043 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9044 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9045 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9046 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9047 { "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]9048
9049 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9050 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9051 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
9052
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9053 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9054 { "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]9055 { "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]9056 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9057 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9058 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9059 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9060 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9061 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9062 { "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]9063
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9064 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9065 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9066 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9067 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9068 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9069 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9070 { "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 },
9071 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9072 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9073 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9074 { "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]9075
9076 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9077
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9078 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9079 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9080 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9081 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9082 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9083 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9084 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9085 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9086 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9087 { "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]9088
9089 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9090 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9091 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9092 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9093 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9094 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9095 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9096 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9097 { "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]9098 { "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]9099
9100 { NULL, NULL, NULL, NULL },
9101}};
9102
9103/************************************************************************/
9104/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9105/************************************************************************/
9106/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9107static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9108 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9109 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9110 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9111 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9112 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9113 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9114 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9115 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9116 { "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]9117 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9118}};
9119
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9120
9121__attribute__((constructor))
9122static void __http_protocol_init(void)
9123{
9124 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9125 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9126}
9127
9128
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9129/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9130 * Local variables:
9131 * c-indent-level: 8
9132 * c-basic-offset: 8
9133 * End:
9134 */