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git01.mediatek.com / haproxy / a3571668896a600c3ffc1427201abd03d80e6b49 / . / src / proto_http.c
blob: 535428471fb41115bd8de6cba5abeb3cec612efd [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 Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3016 /* just in case we have some per-backend tracking */
3017 session_inc_be_http_req_ctr(s);
3018
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3019 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3020 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]3021
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3022 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3023 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3024 do_stats = stats_check_uri(s->rep->prod, txn, px);
3025 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3026 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]3027 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3028 else
3029 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3030
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3031 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3032 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]3033 txn->status = 403;
3034 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3035 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3036 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3037 s->fe->fe_counters.denied_req++;
3038 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3039 s->be->be_counters.denied_req++;
3040 if (s->listener->counters)
3041 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3042 goto return_prx_cond;
3043 }
3044
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3045 /* try headers filters */
3046 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3047 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3048 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3049
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3050 /* has the request been denied ? */
3051 if (txn->flags & TX_CLDENY) {
3052 /* no need to go further */
3053 txn->status = 403;
3054 /* let's log the request time */
3055 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3056 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3057 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3058 goto return_prx_cond;
3059 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3060
3061 /* When a connection is tarpitted, we use the tarpit timeout,
3062 * which may be the same as the connect timeout if unspecified.
3063 * If unset, then set it to zero because we really want it to
3064 * eventually expire. We build the tarpit as an analyser.
3065 */
3066 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3067 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3068 /* wipe the request out so that we can drop the connection early
3069 * if the client closes first.
3070 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3071 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3072 req->analysers = 0; /* remove switching rules etc... */
3073 req->analysers |= AN_REQ_HTTP_TARPIT;
3074 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3075 if (!req->analyse_exp)
3076 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3077 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3078 return 1;
3079 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3080 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3081
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3082 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3083 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3084 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3085 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3086 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3087 * avoid to redo the same work if FE and BE have the same settings (common).
3088 * The method consists in checking if options changed between the two calls
3089 * (implying that either one is non-null, or one of them is non-null and we
3090 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3091 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3092
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3093 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3094 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3095 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3096 (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]3097 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3098
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3099 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3100 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3101 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3102 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3103 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3104 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3105 tmp = TX_CON_WANT_CLO;
3106
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3107 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3108 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3109
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3110 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3111 /* parse the Connection header and possibly clean it */
3112 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3113 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3114 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3115 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3116 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3117 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3118 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3119 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3120 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3121
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3122 /* check if client or config asks for explicit close in KAL/SCL */
3123 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3124 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3125 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3126 (!(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]3127 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3128 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3129 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3130 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3131 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3132
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3133 /* we can be blocked here because the request needs to be authenticated,
3134 * either to pass or to access stats.
3135 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3136 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]3137 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3138
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3139 if (!realm)
3140 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3141
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3142 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]3143 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3144 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3145 /* on 401 we still count one error, because normal browsing
3146 * won't significantly increase the counter but brute force
3147 * attempts will.
3148 */
3149 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3150 goto return_prx_cond;
3151 }
3152
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3153 /* add request headers from the rule sets in the same order */
3154 list_for_each_entry(wl, &px->req_add, list) {
3155 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3156 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]3157 ret = acl_pass(ret);
3158 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3159 ret = !ret;
3160 if (!ret)
3161 continue;
3162 }
3163
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3164 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3165 goto return_bad_req;
3166 }
3167
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3168 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3169 struct stats_admin_rule *stats_admin_rule;
3170
3171 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3172 * FIXME!!! that one is rather dangerous, we want to
3173 * make it follow standard rules (eg: clear req->analysers).
3174 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3175
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3176 /* now check whether we have some admin rules for this request */
3177 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3178 int ret = 1;
3179
3180 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3181 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]3182 ret = acl_pass(ret);
3183 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3184 ret = !ret;
3185 }
3186
3187 if (ret) {
3188 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3189 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3190 break;
3191 }
3192 }
3193
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3194 /* Was the status page requested with a POST ? */
3195 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3196 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3197 if (msg->msg_state < HTTP_MSG_100_SENT) {
3198 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3199 * send an HTTP/1.1 100 Continue intermediate response.
3200 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3201 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3202 struct hdr_ctx ctx;
3203 ctx.idx = 0;
3204 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3205 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3206 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3207 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3208 }
3209 }
3210 msg->msg_state = HTTP_MSG_100_SENT;
3211 s->logs.tv_request = now; /* update the request timer to reflect full request */
3212 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3213 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3214 /* we need more data */
3215 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3216 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3217 return 0;
3218 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3219 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3220 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3221 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3222 }
3223
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3224 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3225 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3226 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]3227 s->target = s->rep->prod->conn->target; // for logging only
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3228 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3229 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3230 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3231 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3232 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3233
3234 return 0;
3235
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3236 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3237
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3238 /* check whether we have some ACLs set to redirect this request */
3239 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3240 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3241
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3242 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3243 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]3244 ret = acl_pass(ret);
3245 if (rule->cond->pol == ACL_COND_UNLESS)
3246 ret = !ret;
3247 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3248
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3249 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3250 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3251
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3252 /* build redirect message */
3253 switch(rule->code) {
3254 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3255 msg_fmt = HTTP_303;
3256 break;
3257 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3258 msg_fmt = HTTP_301;
3259 break;
3260 case 302:
3261 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3262 msg_fmt = HTTP_302;
3263 break;
3264 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3265
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3266 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3267 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3268
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3269 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3270 case REDIRECT_TYPE_SCHEME: {
3271 const char *path;
3272 const char *host;
3273 struct hdr_ctx ctx;
3274 int pathlen;
3275 int hostlen;
3276
3277 host = "";
3278 hostlen = 0;
3279 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3280 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]3281 host = ctx.line + ctx.val;
3282 hostlen = ctx.vlen;
3283 }
3284
3285 path = http_get_path(txn);
3286 /* build message using path */
3287 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3288 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]3289 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3290 int qs = 0;
3291 while (qs < pathlen) {
3292 if (path[qs] == '?') {
3293 pathlen = qs;
3294 break;
3295 }
3296 qs++;
3297 }
3298 }
3299 } else {
3300 path = "/";
3301 pathlen = 1;
3302 }
3303
3304 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3305 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3306 goto return_bad_req;
3307
3308 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3309 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3310 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3311
3312 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3313 memcpy(trash.str + trash.len, "://", 3);
3314 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3315
3316 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3317 memcpy(trash.str + trash.len, host, hostlen);
3318 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3319
3320 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3321 memcpy(trash.str + trash.len, path, pathlen);
3322 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3323
3324 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3325 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3326 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3327 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3328 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3329 trash.str[trash.len] = '/';
3330 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3331 }
3332
3333 break;
3334 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3335 case REDIRECT_TYPE_PREFIX: {
3336 const char *path;
3337 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3338
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3339 path = http_get_path(txn);
3340 /* build message using path */
3341 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3342 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]3343 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3344 int qs = 0;
3345 while (qs < pathlen) {
3346 if (path[qs] == '?') {
3347 pathlen = qs;
3348 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3349 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3350 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3351 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3352 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3353 } else {
3354 path = "/";
3355 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3356 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3357
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3358 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3359 goto return_bad_req;
3360
3361 /* add prefix. Note that if prefix == "/", we don't want to
3362 * add anything, otherwise it makes it hard for the user to
3363 * configure a self-redirection.
3364 */
3365 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3366 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3367 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3368 }
3369
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3370 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3371 memcpy(trash.str + trash.len, path, pathlen);
3372 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3373
3374 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3375 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3376 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3377 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3378 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3379 trash.str[trash.len] = '/';
3380 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3381 }
3382
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3383 break;
3384 }
3385 case REDIRECT_TYPE_LOCATION:
3386 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3387 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3388 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3389
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3390 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3391 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3392 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3393 break;
3394 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3395
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3396 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3397 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3398 trash.len += 14;
3399 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3400 trash.len += rule->cookie_len;
3401 memcpy(trash.str + trash.len, "\r\n", 2);
3402 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3403 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3404
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3405 /* add end of headers and the keep-alive/close status.
3406 * We may choose to set keep-alive if the Location begins
3407 * with a slash, because the client will come back to the
3408 * same server.
3409 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3410 txn->status = rule->code;
3411 /* let's log the request time */
3412 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3413
3414 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3415 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3416 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3417 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3418 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3419 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3420 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3421 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3422 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3423 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3424 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3425 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3426 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3427 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3428 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3429 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3430 trash.len += 4;
3431 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3432 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3433 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3434 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3435 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3436 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3437 txn->req.msg_state = HTTP_MSG_CLOSED;
3438 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3439 break;
3440 } else {
3441 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3442 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3443 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3444 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3445 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3446 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3447 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3448 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3449 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3450 goto return_prx_cond;
3451 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3452 }
3453 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3454
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3455 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3456 * If this happens, then the data will not come immediately, so we must
3457 * send all what we have without waiting. Note that due to the small gain
3458 * 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]3459 * 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]3460 * itself once used.
3461 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3462 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3463
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3464 /* that's OK for us now, let's move on to next analysers */
3465 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3466
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3467 return_bad_req:
3468 /* We centralize bad requests processing here */
3469 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3470 /* we detected a parsing error. We want to archive this request
3471 * in the dedicated proxy area for later troubleshooting.
3472 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3473 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]3474 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3475
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3476 txn->req.msg_state = HTTP_MSG_ERROR;
3477 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3478 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3479
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3480 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3481 if (s->listener->counters)
3482 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3483
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3484 return_prx_cond:
3485 if (!(s->flags & SN_ERR_MASK))
3486 s->flags |= SN_ERR_PRXCOND;
3487 if (!(s->flags & SN_FINST_MASK))
3488 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3489
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3490 req->analysers = 0;
3491 req->analyse_exp = TICK_ETERNITY;
3492 return 0;
3493}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3494
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3495/* This function performs all the processing enabled for the current request.
3496 * It returns 1 if the processing can continue on next analysers, or zero if it
3497 * needs more data, encounters an error, or wants to immediately abort the
3498 * request. It relies on buffers flags, and updates s->req->analysers.
3499 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3500int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3501{
3502 struct http_txn *txn = &s->txn;
3503 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3504
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3505 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3506 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3507 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3508 return 0;
3509 }
3510
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3511 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]3512 now_ms, __FUNCTION__,
3513 s,
3514 req,
3515 req->rex, req->wex,
3516 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3517 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3518 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3519
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3520 if (s->fe->comp || s->be->comp)
3521 select_compression_request_header(s, req->buf);
3522
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3523 /*
3524 * Right now, we know that we have processed the entire headers
3525 * and that unwanted requests have been filtered out. We can do
3526 * whatever we want with the remaining request. Also, now we
3527 * may have separate values for ->fe, ->be.
3528 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3529
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3530 /*
3531 * If HTTP PROXY is set we simply get remote server address
3532 * parsing incoming request.
3533 */
3534 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3535 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]3536 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3537
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3538 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3539 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3540 * Note that doing so might move headers in the request, but
3541 * the fields will stay coherent and the URI will not move.
3542 * This should only be performed in the backend.
3543 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3544 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3545 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3546 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3547
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3548 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3549 * 8: the appsession cookie was looked up very early in 1.2,
3550 * so let's do the same now.
3551 */
3552
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3553 /* It needs to look into the URI unless persistence must be ignored */
3554 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3555 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]3556 }
3557
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3558 /* add unique-id if "header-unique-id" is specified */
3559
3560 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3561 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3562
3563 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3564 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3565 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3566 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3567 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]3568 goto return_bad_req;
3569 }
3570
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3571 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3572 * 9: add X-Forwarded-For if either the frontend or the backend
3573 * asks for it.
3574 */
3575 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3576 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3577 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3578 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3579 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]3580 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3581 /* The header is set to be added only if none is present
3582 * and we found it, so don't do anything.
3583 */
3584 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3585 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3586 /* Add an X-Forwarded-For header unless the source IP is
3587 * in the 'except' network range.
3588 */
3589 if ((!s->fe->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->fe->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3591 != s->fe->except_net.s_addr) &&
3592 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3593 (((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]3594 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3595 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3596 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3597 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3598
3599 /* Note: we rely on the backend to get the header name to be used for
3600 * x-forwarded-for, because the header is really meant for the backends.
3601 * However, if the backend did not specify any option, we have to rely
3602 * on the frontend's header name.
3603 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3604 if (s->be->fwdfor_hdr_len) {
3605 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3606 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3607 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3608 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3609 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3610 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3611 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]3612
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3613 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]3614 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3615 }
3616 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3617 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3618 /* FIXME: for the sake of completeness, we should also support
3619 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3620 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3621 int len;
3622 char pn[INET6_ADDRSTRLEN];
3623 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3624 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3625 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3626
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3627 /* Note: we rely on the backend to get the header name to be used for
3628 * x-forwarded-for, because the header is really meant for the backends.
3629 * However, if the backend did not specify any option, we have to rely
3630 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3631 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3632 if (s->be->fwdfor_hdr_len) {
3633 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3634 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3635 } else {
3636 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3637 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3638 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3639 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3640
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3641 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]3642 goto return_bad_req;
3643 }
3644 }
3645
3646 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3647 * 10: add X-Original-To if either the frontend or the backend
3648 * asks for it.
3649 */
3650 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3651
3652 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3653 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3654 /* Add an X-Original-To header unless the destination IP is
3655 * in the 'except' network range.
3656 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3657 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3658
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3659 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3660 ((!s->fe->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->fe->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3662 != s->fe->except_to.s_addr) &&
3663 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3664 (((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]3665 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3666 int len;
3667 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3668 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3669
3670 /* Note: we rely on the backend to get the header name to be used for
3671 * x-original-to, because the header is really meant for the backends.
3672 * However, if the backend did not specify any option, we have to rely
3673 * on the frontend's header name.
3674 */
3675 if (s->be->orgto_hdr_len) {
3676 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3677 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3678 } else {
3679 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3680 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3681 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3682 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]3683
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3684 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]3685 goto return_bad_req;
3686 }
3687 }
3688 }
3689
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3690 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3691 * If an "Upgrade" token is found, the header is left untouched in order not to have
3692 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3693 * "Upgrade" is present in the Connection header.
3694 */
3695 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3696 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3697 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3698 unsigned int want_flags = 0;
3699
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3700 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3701 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3702 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3703 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3704 want_flags |= TX_CON_CLO_SET;
3705 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3706 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3707 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3708 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3709 want_flags |= TX_CON_KAL_SET;
3710 }
3711
3712 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3713 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3714 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3715
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3716
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3717 /* If we have no server assigned yet and we're balancing on url_param
3718 * with a POST request, we may be interested in checking the body for
3719 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3720 */
3721 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3722 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3723 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3724 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3725 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3726 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3727 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3728
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3729 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3730 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3731#ifdef TCP_QUICKACK
3732 /* We expect some data from the client. Unless we know for sure
3733 * we already have a full request, we have to re-enable quick-ack
3734 * in case we previously disabled it, otherwise we might cause
3735 * the client to delay further data.
3736 */
3737 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3738 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3739 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3740 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]3741#endif
3742 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3743
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3744 /*************************************************************
3745 * OK, that's finished for the headers. We have done what we *
3746 * could. Let's switch to the DATA state. *
3747 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3748 req->analyse_exp = TICK_ETERNITY;
3749 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3750
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3751 /* if the server closes the connection, we want to immediately react
3752 * and close the socket to save packets and syscalls.
3753 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]3754 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
3755 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3756
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3757 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3758 /* OK let's go on with the BODY now */
3759 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3760
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3761 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3762 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3763 /* we detected a parsing error. We want to archive this request
3764 * in the dedicated proxy area for later troubleshooting.
3765 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3766 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]3767 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3768
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3769 txn->req.msg_state = HTTP_MSG_ERROR;
3770 txn->status = 400;
3771 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3772 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3773
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3774 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3775 if (s->listener->counters)
3776 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3777
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3778 if (!(s->flags & SN_ERR_MASK))
3779 s->flags |= SN_ERR_PRXCOND;
3780 if (!(s->flags & SN_FINST_MASK))
3781 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3782 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3783}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3784
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3785/* This function is an analyser which processes the HTTP tarpit. It always
3786 * returns zero, at the beginning because it prevents any other processing
3787 * from occurring, and at the end because it terminates the request.
3788 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3789int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3790{
3791 struct http_txn *txn = &s->txn;
3792
3793 /* This connection is being tarpitted. The CLIENT side has
3794 * already set the connect expiration date to the right
3795 * timeout. We just have to check that the client is still
3796 * there and that the timeout has not expired.
3797 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3798 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3799 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3800 !tick_is_expired(req->analyse_exp, now_ms))
3801 return 0;
3802
3803 /* We will set the queue timer to the time spent, just for
3804 * logging purposes. We fake a 500 server error, so that the
3805 * attacker will not suspect his connection has been tarpitted.
3806 * It will not cause trouble to the logs because we can exclude
3807 * the tarpitted connections by filtering on the 'PT' status flags.
3808 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3809 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3810
3811 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3812 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3813 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3814
3815 req->analysers = 0;
3816 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3817
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3818 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3819 if (s->listener->counters)
3820 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3821
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3822 if (!(s->flags & SN_ERR_MASK))
3823 s->flags |= SN_ERR_PRXCOND;
3824 if (!(s->flags & SN_FINST_MASK))
3825 s->flags |= SN_FINST_T;
3826 return 0;
3827}
3828
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3829/* This function is an analyser which processes the HTTP request body. It looks
3830 * for parameters to be used for the load balancing algorithm (url_param). It
3831 * must only be called after the standard HTTP request processing has occurred,
3832 * because it expects the request to be parsed. It returns zero if it needs to
3833 * read more data, or 1 once it has completed its analysis.
3834 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3835int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3836{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3837 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3838 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3839 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3840
3841 /* We have to parse the HTTP request body to find any required data.
3842 * "balance url_param check_post" should have been the only way to get
3843 * into this. We were brought here after HTTP header analysis, so all
3844 * related structures are ready.
3845 */
3846
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3847 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3848 goto missing_data;
3849
3850 if (msg->msg_state < HTTP_MSG_100_SENT) {
3851 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3852 * send an HTTP/1.1 100 Continue intermediate response.
3853 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3854 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3855 struct hdr_ctx ctx;
3856 ctx.idx = 0;
3857 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3858 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3859 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3860 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3861 }
3862 }
3863 msg->msg_state = HTTP_MSG_100_SENT;
3864 }
3865
3866 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3867 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3868 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3869 * is still null. We must save the body in msg->next because it
3870 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3871 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3872 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3873
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3874 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3875 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3876 else
3877 msg->msg_state = HTTP_MSG_DATA;
3878 }
3879
3880 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3881 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3882 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3883 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3884 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3885 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3886
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3887 if (!ret)
3888 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3889 else if (ret < 0) {
3890 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3891 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3892 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3893 }
3894
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3895 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3896 * We have the first data byte is in msg->sov. We're waiting for at
3897 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3898 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3899
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3900 if (msg->body_len < limit)
3901 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3902
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3903 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3904 goto http_end;
3905
3906 missing_data:
3907 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3908 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3909 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3910 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3911 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3912
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3913 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3914 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3915 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3916
3917 if (!(s->flags & SN_ERR_MASK))
3918 s->flags |= SN_ERR_CLITO;
3919 if (!(s->flags & SN_FINST_MASK))
3920 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3921 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3922 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3923
3924 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3925 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]3926 /* Not enough data. We'll re-use the http-request
3927 * timeout here. Ideally, we should set the timeout
3928 * relative to the accept() date. We just set the
3929 * request timeout once at the beginning of the
3930 * request.
3931 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3932 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3933 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3934 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3935 return 0;
3936 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3937
3938 http_end:
3939 /* The situation will not evolve, so let's give up on the analysis. */
3940 s->logs.tv_request = now; /* update the request timer to reflect full request */
3941 req->analysers &= ~an_bit;
3942 req->analyse_exp = TICK_ETERNITY;
3943 return 1;
3944
3945 return_bad_req: /* let's centralize all bad requests */
3946 txn->req.msg_state = HTTP_MSG_ERROR;
3947 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3948 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3949
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3950 if (!(s->flags & SN_ERR_MASK))
3951 s->flags |= SN_ERR_PRXCOND;
3952 if (!(s->flags & SN_FINST_MASK))
3953 s->flags |= SN_FINST_R;
3954
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3955 return_err_msg:
3956 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3957 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3958 if (s->listener->counters)
3959 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3960 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3961}
3962
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3963/* send a server's name with an outgoing request over an established connection.
3964 * Note: this function is designed to be called once the request has been scheduled
3965 * for being forwarded. This is the reason why it rewinds the buffer before
3966 * proceeding.
3967 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3968int 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]3969
3970 struct hdr_ctx ctx;
3971
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3972 char *hdr_name = be->server_id_hdr_name;
3973 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3974 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3975 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3976 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3977
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3978 ctx.idx = 0;
3979
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3980 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3981 if (old_o) {
3982 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3983 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3984 }
3985
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3986 old_i = chn->buf->i;
3987 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]3988 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3989 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3990 }
3991
3992 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3993 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3994 memcpy(hdr_val, hdr_name, hdr_name_len);
3995 hdr_val += hdr_name_len;
3996 *hdr_val++ = ':';
3997 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3998 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
3999 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]4000
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4001 if (old_o) {
4002 /* If this was a forwarded request, we must readjust the amount of
4003 * data to be forwarded in order to take into account the size
4004 * variations.
4005 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4006 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4007 }
4008
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4009 return 0;
4010}
4011
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4012/* Terminate current transaction and prepare a new one. This is very tricky
4013 * right now but it works.
4014 */
4015void http_end_txn_clean_session(struct session *s)
4016{
4017 /* FIXME: We need a more portable way of releasing a backend's and a
4018 * server's connections. We need a safer way to reinitialize buffer
4019 * flags. We also need a more accurate method for computing per-request
4020 * data.
4021 */
4022 http_silent_debug(__LINE__, s);
4023
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4024 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4025 si_shutr(s->req->cons);
4026 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4027
4028 http_silent_debug(__LINE__, s);
4029
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4030 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4031 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4032 if (unlikely(s->srv_conn))
4033 sess_change_server(s, NULL);
4034 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4035
4036 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4037 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4038 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4039
4040 if (s->txn.status) {
4041 int n;
4042
4043 n = s->txn.status / 100;
4044 if (n < 1 || n > 5)
4045 n = 0;
4046
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4047 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4048 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4049 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4050 s->fe->fe_counters.p.http.comp_rsp++;
4051 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4052 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4053 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4054 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4055 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4056 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4057 s->be->be_counters.p.http.comp_rsp++;
4058 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4059 }
4060
4061 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4062 s->logs.bytes_in -= s->req->buf->i;
4063 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4064
4065 /* let's do a final log if we need it */
4066 if (s->logs.logwait &&
4067 !(s->flags & SN_MONITOR) &&
4068 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4069 s->do_log(s);
4070 }
4071
4072 s->logs.accept_date = date; /* user-visible date for logging */
4073 s->logs.tv_accept = now; /* corrected date for internal use */
4074 tv_zero(&s->logs.tv_request);
4075 s->logs.t_queue = -1;
4076 s->logs.t_connect = -1;
4077 s->logs.t_data = -1;
4078 s->logs.t_close = 0;
4079 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4080 s->logs.srv_queue_size = 0; /* we will get this number soon */
4081
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4082 s->logs.bytes_in = s->req->total = s->req->buf->i;
4083 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4084
4085 if (s->pend_pos)
4086 pendconn_free(s->pend_pos);
4087
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4088 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4089 if (s->flags & SN_CURR_SESS) {
4090 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4091 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4092 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4093 if (may_dequeue_tasks(objt_server(s->target), s->be))
4094 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4095 }
4096
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4097 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4098
4099 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4100 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4101 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4102 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4103 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4104 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4105 s->req->cons->err_loc = NULL;
4106 s->req->cons->exp = TICK_ETERNITY;
4107 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4108 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4109 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]4110 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]4111 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4112
4113 if (s->flags & SN_COMP_READY)
4114 s->comp_algo->end(&s->comp_ctx);
4115 s->comp_algo = NULL;
4116 s->flags &= ~SN_COMP_READY;
4117
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4118 s->txn.meth = 0;
4119 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4120 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4121 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4122 s->req->cons->flags |= SI_FL_INDEP_STR;
4123
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4124 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4125 s->req->flags |= CF_NEVER_WAIT;
4126 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4127 }
4128
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4129 /* if the request buffer is not empty, it means we're
4130 * about to process another request, so send pending
4131 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4132 * Just don't do this if the buffer is close to be full,
4133 * because the request will wait for it to flush a little
4134 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4135 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4136 if (s->req->buf->i) {
4137 if (s->rep->buf->o &&
4138 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4139 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]4140 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4141 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4142
4143 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4144 channel_auto_read(s->req);
4145 channel_auto_close(s->req);
4146 channel_auto_read(s->rep);
4147 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4148
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4149 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4150 s->rep->analysers = 0;
4151
4152 http_silent_debug(__LINE__, s);
4153}
4154
4155
4156/* This function updates the request state machine according to the response
4157 * state machine and buffer flags. It returns 1 if it changes anything (flag
4158 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4159 * it is only used to find when a request/response couple is complete. Both
4160 * this function and its equivalent should loop until both return zero. It
4161 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4162 */
4163int http_sync_req_state(struct session *s)
4164{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4165 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4166 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4167 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4168 unsigned int old_state = txn->req.msg_state;
4169
4170 http_silent_debug(__LINE__, s);
4171 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4172 return 0;
4173
4174 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4175 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4176 * We can shut the read side unless we want to abort_on_close,
4177 * or we have a POST request. The issue with POST requests is
4178 * that some browsers still send a CRLF after the request, and
4179 * this CRLF must be read so that it does not remain in the kernel
4180 * buffers, otherwise a close could cause an RST on some systems
4181 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4182 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4183 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4184 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4185
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4186 /* if the server closes the connection, we want to immediately react
4187 * and close the socket to save packets and syscalls.
4188 */
4189 chn->cons->flags |= SI_FL_NOHALF;
4190
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4191 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4192 goto wait_other_side;
4193
4194 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4195 /* The server has not finished to respond, so we
4196 * don't want to move in order not to upset it.
4197 */
4198 goto wait_other_side;
4199 }
4200
4201 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4202 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4203 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4204 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4205 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4206 goto wait_other_side;
4207 }
4208
4209 /* When we get here, it means that both the request and the
4210 * response have finished receiving. Depending on the connection
4211 * mode, we'll have to wait for the last bytes to leave in either
4212 * direction, and sometimes for a close to be effective.
4213 */
4214
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4215 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4216 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4217 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4218 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4219 }
4220 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4221 /* Option forceclose is set, or either side wants to close,
4222 * let's enforce it now that we're not expecting any new
4223 * data to come. The caller knows the session is complete
4224 * once both states are CLOSED.
4225 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4226 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4227 channel_shutr_now(chn);
4228 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4229 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4230 }
4231 else {
4232 /* The last possible modes are keep-alive and tunnel. Since tunnel
4233 * mode does not set the body analyser, we can't reach this place
4234 * in tunnel mode, so we're left with keep-alive only.
4235 * This mode is currently not implemented, we switch to tunnel mode.
4236 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4237 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4238 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4239 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4240 }
4241
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4242 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4243 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4244 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4245
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4246 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4247 txn->req.msg_state = HTTP_MSG_CLOSING;
4248 goto http_msg_closing;
4249 }
4250 else {
4251 txn->req.msg_state = HTTP_MSG_CLOSED;
4252 goto http_msg_closed;
4253 }
4254 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4255 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4256 }
4257
4258 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4259 http_msg_closing:
4260 /* nothing else to forward, just waiting for the output buffer
4261 * to be empty and for the shutw_now to take effect.
4262 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4263 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4264 txn->req.msg_state = HTTP_MSG_CLOSED;
4265 goto http_msg_closed;
4266 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4267 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4268 txn->req.msg_state = HTTP_MSG_ERROR;
4269 goto wait_other_side;
4270 }
4271 }
4272
4273 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4274 http_msg_closed:
4275 goto wait_other_side;
4276 }
4277
4278 wait_other_side:
4279 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4280 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4281}
4282
4283
4284/* This function updates the response state machine according to the request
4285 * state machine and buffer flags. It returns 1 if it changes anything (flag
4286 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4287 * it is only used to find when a request/response couple is complete. Both
4288 * this function and its equivalent should loop until both return zero. It
4289 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4290 */
4291int http_sync_res_state(struct session *s)
4292{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4293 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4294 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4295 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4296 unsigned int old_state = txn->rsp.msg_state;
4297
4298 http_silent_debug(__LINE__, s);
4299 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4300 return 0;
4301
4302 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4303 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4304 * still monitor the server connection for a possible close
4305 * while the request is being uploaded, so we don't disable
4306 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4307 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4308 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4309
4310 if (txn->req.msg_state == HTTP_MSG_ERROR)
4311 goto wait_other_side;
4312
4313 if (txn->req.msg_state < HTTP_MSG_DONE) {
4314 /* The client seems to still be sending data, probably
4315 * because we got an error response during an upload.
4316 * We have the choice of either breaking the connection
4317 * or letting it pass through. Let's do the later.
4318 */
4319 goto wait_other_side;
4320 }
4321
4322 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4323 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4324 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4325 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4326 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4327 goto wait_other_side;
4328 }
4329
4330 /* When we get here, it means that both the request and the
4331 * response have finished receiving. Depending on the connection
4332 * mode, we'll have to wait for the last bytes to leave in either
4333 * direction, and sometimes for a close to be effective.
4334 */
4335
4336 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4337 /* Server-close mode : shut read and wait for the request
4338 * side to close its output buffer. The caller will detect
4339 * when we're in DONE and the other is in CLOSED and will
4340 * catch that for the final cleanup.
4341 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4342 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4343 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4344 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4345 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4346 /* Option forceclose is set, or either side wants to close,
4347 * let's enforce it now that we're not expecting any new
4348 * data to come. The caller knows the session is complete
4349 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4350 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4351 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4352 channel_shutr_now(chn);
4353 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4354 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4355 }
4356 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4357 /* The last possible modes are keep-alive and tunnel. Since tunnel
4358 * mode does not set the body analyser, we can't reach this place
4359 * in tunnel mode, so we're left with keep-alive only.
4360 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4361 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4362 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4363 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4364 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4365 }
4366
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4367 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4368 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4369 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4370 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4371 goto http_msg_closing;
4372 }
4373 else {
4374 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4375 goto http_msg_closed;
4376 }
4377 }
4378 goto wait_other_side;
4379 }
4380
4381 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4382 http_msg_closing:
4383 /* nothing else to forward, just waiting for the output buffer
4384 * to be empty and for the shutw_now to take effect.
4385 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4386 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4387 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4388 goto http_msg_closed;
4389 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4390 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4391 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4392 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4393 if (objt_server(s->target))
4394 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4395 goto wait_other_side;
4396 }
4397 }
4398
4399 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4400 http_msg_closed:
4401 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4402 bi_erase(chn);
4403 channel_auto_close(chn);
4404 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4405 goto wait_other_side;
4406 }
4407
4408 wait_other_side:
4409 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4410 /* We force the response to leave immediately if we're waiting for the
4411 * other side, since there is no pending shutdown to push it out.
4412 */
4413 if (!channel_is_empty(chn))
4414 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4415 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4416}
4417
4418
4419/* Resync the request and response state machines. Return 1 if either state
4420 * changes.
4421 */
4422int http_resync_states(struct session *s)
4423{
4424 struct http_txn *txn = &s->txn;
4425 int old_req_state = txn->req.msg_state;
4426 int old_res_state = txn->rsp.msg_state;
4427
4428 http_silent_debug(__LINE__, s);
4429 http_sync_req_state(s);
4430 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4431 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4432 if (!http_sync_res_state(s))
4433 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4434 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4435 if (!http_sync_req_state(s))
4436 break;
4437 }
4438 http_silent_debug(__LINE__, s);
4439 /* OK, both state machines agree on a compatible state.
4440 * There are a few cases we're interested in :
4441 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4442 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4443 * directions, so let's simply disable both analysers.
4444 * - HTTP_MSG_CLOSED on the response only means we must abort the
4445 * request.
4446 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4447 * with server-close mode means we've completed one request and we
4448 * must re-initialize the server connection.
4449 */
4450
4451 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4452 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4453 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4454 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4455 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4456 channel_auto_close(s->req);
4457 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4458 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4459 channel_auto_close(s->rep);
4460 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4461 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4462 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4463 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4464 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4465 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4466 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4467 channel_auto_close(s->rep);
4468 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4469 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4470 channel_abort(s->req);
4471 channel_auto_close(s->req);
4472 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4473 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4474 }
4475 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4476 txn->rsp.msg_state == HTTP_MSG_DONE &&
4477 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4478 /* server-close: terminate this server connection and
4479 * reinitialize a fresh-new transaction.
4480 */
4481 http_end_txn_clean_session(s);
4482 }
4483
4484 http_silent_debug(__LINE__, s);
4485 return txn->req.msg_state != old_req_state ||
4486 txn->rsp.msg_state != old_res_state;
4487}
4488
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4489/* This function is an analyser which forwards request body (including chunk
4490 * sizes if any). It is called as soon as we must forward, even if we forward
4491 * zero byte. The only situation where it must not be called is when we're in
4492 * tunnel mode and we want to forward till the close. It's used both to forward
4493 * remaining data and to resync after end of body. It expects the msg_state to
4494 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4495 * 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]4496 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4497 * bytes of pending data + the headers if not already done (between sol and sov).
4498 * 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]4499 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4500int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4501{
4502 struct http_txn *txn = &s->txn;
4503 struct http_msg *msg = &s->txn.req;
4504
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4505 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4506 return 0;
4507
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4508 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]4509 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4510 /* Output closed while we were sending data. We must abort and
4511 * wake the other side up.
4512 */
4513 msg->msg_state = HTTP_MSG_ERROR;
4514 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4515 return 1;
4516 }
4517
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4518 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4519 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4520
4521 /* Note that we don't have to send 100-continue back because we don't
4522 * need the data to complete our job, and it's up to the server to
4523 * decide whether to return 100, 417 or anything else in return of
4524 * an "Expect: 100-continue" header.
4525 */
4526
4527 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4528 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4529 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4530 * is still null. We must save the body in msg->next because it
4531 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4532 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4533 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4534
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4535 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4536 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4537 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4538 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4539 }
4540
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4541 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4542 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4543
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4544 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4545 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4546 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4547 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4548 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4549 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4550 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4551 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4552 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4553
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4554 if (msg->msg_state == HTTP_MSG_DATA) {
4555 /* must still forward */
4556 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4557 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4558
4559 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4560 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4561 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4562 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4563 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4564 }
4565 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4566 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4567 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4568 * TRAILERS state.
4569 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4570 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4571
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4572 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4573 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4574 else if (ret < 0) {
4575 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4576 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4577 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]4578 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4579 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4580 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4581 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4582 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4583 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4584 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4585
4586 if (ret == 0)
4587 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4588 else if (ret < 0) {
4589 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4590 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4591 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]4592 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4593 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4594 /* we're in MSG_CHUNK_SIZE now */
4595 }
4596 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4597 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4598
4599 if (ret == 0)
4600 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4601 else if (ret < 0) {
4602 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4603 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4604 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]4605 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4606 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4607 /* we're in HTTP_MSG_DONE now */
4608 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4609 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4610 int old_state = msg->msg_state;
4611
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4612 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4613 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4614 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4615 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4616 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4617 if (http_resync_states(s)) {
4618 /* some state changes occurred, maybe the analyser
4619 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4620 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4621 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4622 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4623 /* request errors are most likely due to
4624 * the server aborting the transfer.
4625 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4626 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4627 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4628 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4629 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4630 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4631 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4632 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4633 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4634
4635 /* If "option abortonclose" is set on the backend, we
4636 * want to monitor the client's connection and forward
4637 * any shutdown notification to the server, which will
4638 * decide whether to close or to go on processing the
4639 * request.
4640 */
4641 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4642 channel_auto_read(req);
4643 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4644 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4645 else if (s->txn.meth == HTTP_METH_POST) {
4646 /* POST requests may require to read extra CRLF
4647 * sent by broken browsers and which could cause
4648 * an RST to be sent upon close on some systems
4649 * (eg: Linux).
4650 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4651 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4652 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4653
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4654 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4655 }
4656 }
4657
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4658 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4659 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4660 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4661 if (!(s->flags & SN_ERR_MASK))
4662 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4663 if (!(s->flags & SN_FINST_MASK)) {
4664 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4665 s->flags |= SN_FINST_H;
4666 else
4667 s->flags |= SN_FINST_D;
4668 }
4669
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4670 s->fe->fe_counters.cli_aborts++;
4671 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4672 if (objt_server(s->target))
4673 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4674
4675 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4676 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4677
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4678 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4679 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4680 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4681
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4682 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4683 * 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]4684 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4685 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4686 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4687
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4688 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4689 * 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]4690 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4691 * modes are already handled by the stream sock layer. We must not do
4692 * this in content-length mode because it could present the MSG_MORE
4693 * flag with the last block of forwarded data, which would cause an
4694 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4695 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4696 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4697 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4698
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4699 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4700 return 0;
4701
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4702 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4703 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4704 if (s->listener->counters)
4705 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4706 return_bad_req_stats_ok:
4707 txn->req.msg_state = HTTP_MSG_ERROR;
4708 if (txn->status) {
4709 /* Note: we don't send any error if some data were already sent */
4710 stream_int_retnclose(req->prod, NULL);
4711 } else {
4712 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4713 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4714 }
4715 req->analysers = 0;
4716 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]4717
4718 if (!(s->flags & SN_ERR_MASK))
4719 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4720 if (!(s->flags & SN_FINST_MASK)) {
4721 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4722 s->flags |= SN_FINST_H;
4723 else
4724 s->flags |= SN_FINST_D;
4725 }
4726 return 0;
4727
4728 aborted_xfer:
4729 txn->req.msg_state = HTTP_MSG_ERROR;
4730 if (txn->status) {
4731 /* Note: we don't send any error if some data were already sent */
4732 stream_int_retnclose(req->prod, NULL);
4733 } else {
4734 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4735 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4736 }
4737 req->analysers = 0;
4738 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4739
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4740 s->fe->fe_counters.srv_aborts++;
4741 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4742 if (objt_server(s->target))
4743 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4744
4745 if (!(s->flags & SN_ERR_MASK))
4746 s->flags |= SN_ERR_SRVCL;
4747 if (!(s->flags & SN_FINST_MASK)) {
4748 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4749 s->flags |= SN_FINST_H;
4750 else
4751 s->flags |= SN_FINST_D;
4752 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4753 return 0;
4754}
4755
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4756/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4757 * processing can continue on next analysers, or zero if it either needs more
4758 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4759 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4760 * when it has nothing left to do, and may remove any analyser when it wants to
4761 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4762 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4763int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4764{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4765 struct http_txn *txn = &s->txn;
4766 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4767 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4768 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4769 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4770 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4771
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4772 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]4773 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4774 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4775 rep,
4776 rep->rex, rep->wex,
4777 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4778 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4779 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4780
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4781 /*
4782 * Now parse the partial (or complete) lines.
4783 * We will check the response syntax, and also join multi-line
4784 * headers. An index of all the lines will be elaborated while
4785 * parsing.
4786 *
4787 * For the parsing, we use a 28 states FSM.
4788 *
4789 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4790 * rep->buf->p = beginning of response
4791 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4792 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4793 * msg->eol = end of current header or line (LF or CRLF)
4794 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4795 */
4796
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4797 /* There's a protected area at the end of the buffer for rewriting
4798 * purposes. We don't want to start to parse the request if the
4799 * protected area is affected, because we may have to move processed
4800 * data later, which is much more complicated.
4801 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4802 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4803 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4804 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4805 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4806 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4807 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4808 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4809 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4810 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4811 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4812 return 0;
4813 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4814 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4815 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4816 }
4817
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4818 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4819 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4820 }
4821
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4822 /* 1: we might have to print this header in debug mode */
4823 if (unlikely((global.mode & MODE_DEBUG) &&
4824 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4825 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4826 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4827
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4828 sol = rep->buf->p;
4829 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4830 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4831
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4832 sol += hdr_idx_first_pos(&txn->hdr_idx);
4833 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4834
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4835 while (cur_idx) {
4836 eol = sol + txn->hdr_idx.v[cur_idx].len;
4837 debug_hdr("srvhdr", s, sol, eol);
4838 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4839 cur_idx = txn->hdr_idx.v[cur_idx].next;
4840 }
4841 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4842
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4843 /*
4844 * Now we quickly check if we have found a full valid response.
4845 * If not so, we check the FD and buffer states before leaving.
4846 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4847 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4848 * responses are checked first.
4849 *
4850 * Depending on whether the client is still there or not, we
4851 * may send an error response back or not. Note that normally
4852 * we should only check for HTTP status there, and check I/O
4853 * errors somewhere else.
4854 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4855
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4856 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4857 /* Invalid response */
4858 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4859 /* we detected a parsing error. We want to archive this response
4860 * in the dedicated proxy area for later troubleshooting.
4861 */
4862 hdr_response_bad:
4863 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4864 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]4865
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4866 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4867 if (objt_server(s->target)) {
4868 objt_server(s->target)->counters.failed_resp++;
4869 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4870 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4871 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4872 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4873 rep->analysers = 0;
4874 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4875 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4876 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4877 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4878
4879 if (!(s->flags & SN_ERR_MASK))
4880 s->flags |= SN_ERR_PRXCOND;
4881 if (!(s->flags & SN_FINST_MASK))
4882 s->flags |= SN_FINST_H;
4883
4884 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4885 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4886
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4887 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4888 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4889 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4890 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4891 goto hdr_response_bad;
4892 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4893
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4894 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4895 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4896 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4897 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]4898
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4899 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4900 if (objt_server(s->target)) {
4901 objt_server(s->target)->counters.failed_resp++;
4902 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4903 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4904
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4905 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4906 rep->analysers = 0;
4907 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4908 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4909 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4910 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4911
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4912 if (!(s->flags & SN_ERR_MASK))
4913 s->flags |= SN_ERR_SRVCL;
4914 if (!(s->flags & SN_FINST_MASK))
4915 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4916 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4917 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4918
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4919 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4920 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4921 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4922 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]4923
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4924 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4925 if (objt_server(s->target)) {
4926 objt_server(s->target)->counters.failed_resp++;
4927 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4928 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4929
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4930 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4931 rep->analysers = 0;
4932 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4933 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4934 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4935 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4936
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4937 if (!(s->flags & SN_ERR_MASK))
4938 s->flags |= SN_ERR_SRVTO;
4939 if (!(s->flags & SN_FINST_MASK))
4940 s->flags |= SN_FINST_H;
4941 return 0;
4942 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4943
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]4944 /* client abort with an abortonclose */
4945 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
4946 s->fe->fe_counters.cli_aborts++;
4947 s->be->be_counters.cli_aborts++;
4948 if (objt_server(s->target))
4949 objt_server(s->target)->counters.cli_aborts++;
4950
4951 rep->analysers = 0;
4952 channel_auto_close(rep);
4953
4954 txn->status = 400;
4955 bi_erase(rep);
4956 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
4957
4958 if (!(s->flags & SN_ERR_MASK))
4959 s->flags |= SN_ERR_CLICL;
4960 if (!(s->flags & SN_FINST_MASK))
4961 s->flags |= SN_FINST_H;
4962
4963 /* process_session() will take care of the error */
4964 return 0;
4965 }
4966
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4967 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4968 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4969 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4970 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]4971
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4972 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4973 if (objt_server(s->target)) {
4974 objt_server(s->target)->counters.failed_resp++;
4975 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4976 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4977
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4978 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4979 rep->analysers = 0;
4980 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4981 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4982 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4983 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4984
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4985 if (!(s->flags & SN_ERR_MASK))
4986 s->flags |= SN_ERR_SRVCL;
4987 if (!(s->flags & SN_FINST_MASK))
4988 s->flags |= SN_FINST_H;
4989 return 0;
4990 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4991
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4992 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4993 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4994 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4995 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]4996
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4997 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4998 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4999 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5000
5001 if (!(s->flags & SN_ERR_MASK))
5002 s->flags |= SN_ERR_CLICL;
5003 if (!(s->flags & SN_FINST_MASK))
5004 s->flags |= SN_FINST_H;
5005
5006 /* process_session() will take care of the error */
5007 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5008 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5009
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5010 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5011 return 0;
5012 }
5013
5014 /* More interesting part now : we know that we have a complete
5015 * response which at least looks like HTTP. We have an indicator
5016 * of each header's length, so we can parse them quickly.
5017 */
5018
5019 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5020 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]5021
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5022 /*
5023 * 1: get the status code
5024 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5025 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5026 if (n < 1 || n > 5)
5027 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5028 /* when the client triggers a 4xx from the server, it's most often due
5029 * to a missing object or permission. These events should be tracked
5030 * because if they happen often, it may indicate a brute force or a
5031 * vulnerability scan.
5032 */
5033 if (n == 4)
5034 session_inc_http_err_ctr(s);
5035
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5036 if (objt_server(s->target))
5037 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5038
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5039 /* check if the response is HTTP/1.1 or above */
5040 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5041 ((rep->buf->p[5] > '1') ||
5042 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5043 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5044
5045 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5046 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]5047
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5048 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5049 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5050
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5051 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]5052
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5053 /* Adjust server's health based on status code. Note: status codes 501
5054 * and 505 are triggered on demand by client request, so we must not
5055 * count them as server failures.
5056 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5057 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5058 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5059 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5060 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5061 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5062 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5063
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5064 /*
5065 * 2: check for cacheability.
5066 */
5067
5068 switch (txn->status) {
5069 case 200:
5070 case 203:
5071 case 206:
5072 case 300:
5073 case 301:
5074 case 410:
5075 /* RFC2616 @13.4:
5076 * "A response received with a status code of
5077 * 200, 203, 206, 300, 301 or 410 MAY be stored
5078 * by a cache (...) unless a cache-control
5079 * directive prohibits caching."
5080 *
5081 * RFC2616 @9.5: POST method :
5082 * "Responses to this method are not cacheable,
5083 * unless the response includes appropriate
5084 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5085 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5086 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5087 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5088 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5089 break;
5090 default:
5091 break;
5092 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5093
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5094 /*
5095 * 3: we may need to capture headers
5096 */
5097 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5098 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5099 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5100 txn->rsp.cap, s->fe->rsp_cap);
5101
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5102 /* 4: determine the transfer-length.
5103 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5104 * the presence of a message-body in a RESPONSE and its transfer length
5105 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5106 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5107 * All responses to the HEAD request method MUST NOT include a
5108 * message-body, even though the presence of entity-header fields
5109 * might lead one to believe they do. All 1xx (informational), 204
5110 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5111 * message-body. All other responses do include a message-body,
5112 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5113 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5114 * 1. Any response which "MUST NOT" include a message-body (such as the
5115 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5116 * always terminated by the first empty line after the header fields,
5117 * regardless of the entity-header fields present in the message.
5118 *
5119 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5120 * the "chunked" transfer-coding (Section 6.2) is used, the
5121 * transfer-length is defined by the use of this transfer-coding.
5122 * If a Transfer-Encoding header field is present and the "chunked"
5123 * transfer-coding is not present, the transfer-length is defined by
5124 * the sender closing the connection.
5125 *
5126 * 3. If a Content-Length header field is present, its decimal value in
5127 * OCTETs represents both the entity-length and the transfer-length.
5128 * If a message is received with both a Transfer-Encoding header
5129 * field and a Content-Length header field, the latter MUST be ignored.
5130 *
5131 * 4. If the message uses the media type "multipart/byteranges", and
5132 * the transfer-length is not otherwise specified, then this self-
5133 * delimiting media type defines the transfer-length. This media
5134 * type MUST NOT be used unless the sender knows that the recipient
5135 * can parse it; the presence in a request of a Range header with
5136 * multiple byte-range specifiers from a 1.1 client implies that the
5137 * client can parse multipart/byteranges responses.
5138 *
5139 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5140 */
5141
5142 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5143 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5144 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5145 * FIXME: should we parse anyway and return an error on chunked encoding ?
5146 */
5147 if (txn->meth == HTTP_METH_HEAD ||
5148 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5149 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5150 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5151 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5152 goto skip_content_length;
5153 }
5154
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5155 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5156 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5157 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5158 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5159 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5160 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5161 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5162 /* bad transfer-encoding (chunked followed by something else) */
5163 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5164 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5165 break;
5166 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5167 }
5168
5169 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5170 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5171 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5172 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5173 signed long long cl;
5174
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5175 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5176 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5177 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5178 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5179
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5180 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5181 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5182 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5183 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5184
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5185 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5186 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5187 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5188 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5189
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5190 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5191 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5192 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5193 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5194
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5195 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5196 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5197 }
5198
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5199 if (s->fe->comp || s->be->comp)
5200 select_compression_response_header(s, rep->buf);
5201
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5202 /* FIXME: we should also implement the multipart/byterange method.
5203 * For now on, we resort to close mode in this case (unknown length).
5204 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5205skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5206
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5207 /* end of job, return OK */
5208 rep->analysers &= ~an_bit;
5209 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5210 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5211 return 1;
5212}
5213
5214/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5215 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5216 * and updates t->rep->analysers. It might make sense to explode it into several
5217 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5218 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5219int 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]5220{
5221 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5222 struct http_msg *msg = &txn->rsp;
5223 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5224 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5225
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5226 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]5227 now_ms, __FUNCTION__,
5228 t,
5229 rep,
5230 rep->rex, rep->wex,
5231 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5232 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5233 rep->analysers);
5234
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5235 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5236 return 0;
5237
5238 rep->analysers &= ~an_bit;
5239 rep->analyse_exp = TICK_ETERNITY;
5240
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5241 /* Now we have to check if we need to modify the Connection header.
5242 * This is more difficult on the response than it is on the request,
5243 * because we can have two different HTTP versions and we don't know
5244 * how the client will interprete a response. For instance, let's say
5245 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5246 * HTTP/1.1 response without any header. Maybe it will bound itself to
5247 * HTTP/1.0 because it only knows about it, and will consider the lack
5248 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5249 * the lack of header as a keep-alive. Thus we will use two flags
5250 * indicating how a request MAY be understood by the client. In case
5251 * of multiple possibilities, we'll fix the header to be explicit. If
5252 * ambiguous cases such as both close and keepalive are seen, then we
5253 * will fall back to explicit close. Note that we won't take risks with
5254 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5255 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5256 */
5257
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5258 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5259 txn->status == 101)) {
5260 /* Either we've established an explicit tunnel, or we're
5261 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5262 * to understand the next protocols. We have to switch to tunnel
5263 * mode, so that we transfer the request and responses then let
5264 * this protocol pass unmodified. When we later implement specific
5265 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5266 * header which contains information about that protocol for
5267 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5268 */
5269 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5270 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5271 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5272 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5273 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5274 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5275
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5276 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5277 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5278 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5279 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5280
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5281 /* now adjust header transformations depending on current state */
5282 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5283 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5284 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5285 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5286 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5287 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5288 else { /* SCL / KAL */
5289 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5290 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5291 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5292 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5293
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5294 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5295 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5296
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5297 /* Some keep-alive responses are converted to Server-close if
5298 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5299 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5300 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5301 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5302 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5303 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5304 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5305 }
5306
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5307 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5308 /*
5309 * 3: we will have to evaluate the filters.
5310 * As opposed to version 1.2, now they will be evaluated in the
5311 * filters order and not in the header order. This means that
5312 * each filter has to be validated among all headers.
5313 *
5314 * Filters are tried with ->be first, then with ->fe if it is
5315 * different from ->be.
5316 */
5317
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5318 cur_proxy = t->be;
5319 while (1) {
5320 struct proxy *rule_set = cur_proxy;
5321
5322 /* try headers filters */
5323 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5324 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5325 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5326 if (objt_server(t->target)) {
5327 objt_server(t->target)->counters.failed_resp++;
5328 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5329 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5330 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5331 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5332 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5333 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5334 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5335 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5336 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5337 if (!(t->flags & SN_ERR_MASK))
5338 t->flags |= SN_ERR_PRXCOND;
5339 if (!(t->flags & SN_FINST_MASK))
5340 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5341 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5342 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5343 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5344
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5345 /* has the response been denied ? */
5346 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5347 if (objt_server(t->target))
5348 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5349
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5350 t->be->be_counters.denied_resp++;
5351 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5352 if (t->listener->counters)
5353 t->listener->counters->denied_resp++;
5354
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5355 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5356 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5357
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5358 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5359 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5360 if (txn->status < 200)
5361 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5362 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5363 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]5364 ret = acl_pass(ret);
5365 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5366 ret = !ret;
5367 if (!ret)
5368 continue;
5369 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5370 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5371 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5372 }
5373
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5374 /* check whether we're already working on the frontend */
5375 if (cur_proxy == t->fe)
5376 break;
5377 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5378 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5379
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5380 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5381 * We may be facing a 100-continue response, in which case this
5382 * is not the right response, and we're waiting for the next one.
5383 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5384 * next one.
5385 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5386 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5387 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5388 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5389 msg->msg_state = HTTP_MSG_RPBEFORE;
5390 txn->status = 0;
5391 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5392 return 1;
5393 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5394 else if (unlikely(txn->status < 200))
5395 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5396
5397 /* we don't have any 1xx status code now */
5398
5399 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5400 * 4: check for server cookie.
5401 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5402 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5403 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5404 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5405
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5406
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5407 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5408 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5409 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5410 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]5411 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5412
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5413 /*
5414 * 6: add server cookie in the response if needed
5415 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5416 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5417 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5418 (!(t->flags & SN_DIRECT) ||
5419 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5420 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5421 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5422 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5423 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5424 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5425 /* the server is known, it's not the one the client requested, or the
5426 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5427 * insert a set-cookie here, except if we want to insert only on POST
5428 * requests and this one isn't. Note that servers which don't have cookies
5429 * (eg: some backup servers) will return a full cookie removal request.
5430 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5431 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5432 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5433 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5434 t->be->cookie_name);
5435 }
5436 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5437 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]5438
5439 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5440 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5441 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5442 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5443 trash.len += 5;
5444
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5445 if (t->be->cookie_maxlife) {
5446 /* emit first_date, which is either the original one or
5447 * the current date.
5448 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5449 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5450 s30tob64(txn->cookie_first_date ?
5451 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5452 (date.tv_sec+3) >> 2, trash.str + trash.len);
5453 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5454 }
5455 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5456 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5457 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5458
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5459 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5460 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5461
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5462 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5463 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5464
5465 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5466 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5467
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5468 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]5469 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5470
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5471 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5472 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5473 /* the server did not change, only the date was updated */
5474 txn->flags |= TX_SCK_UPDATED;
5475 else
5476 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5477
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5478 /* Here, we will tell an eventual cache on the client side that we don't
5479 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5480 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5481 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5482 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5483 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5484
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5485 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5486
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5487 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5488 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5489 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5490 }
5491 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5492
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5493 /*
5494 * 7: check if result will be cacheable with a cookie.
5495 * We'll block the response if security checks have caught
5496 * nasty things such as a cacheable cookie.
5497 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5498 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5499 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5500 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5501
5502 /* we're in presence of a cacheable response containing
5503 * a set-cookie header. We'll block it as requested by
5504 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5505 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5506 if (objt_server(t->target))
5507 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5508
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5509 t->be->be_counters.denied_resp++;
5510 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5511 if (t->listener->counters)
5512 t->listener->counters->denied_resp++;
5513
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5514 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5515 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5516 send_log(t->be, LOG_ALERT,
5517 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5518 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5519 goto return_srv_prx_502;
5520 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5521
5522 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5523 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5524 * If an "Upgrade" token is found, the header is left untouched in order
5525 * not to have to deal with some client bugs : some of them fail an upgrade
5526 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5527 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5528 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5529 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5530 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5531 unsigned int want_flags = 0;
5532
5533 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5534 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5535 /* we want a keep-alive response here. Keep-alive header
5536 * required if either side is not 1.1.
5537 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5538 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5539 want_flags |= TX_CON_KAL_SET;
5540 }
5541 else {
5542 /* we want a close response here. Close header required if
5543 * the server is 1.1, regardless of the client.
5544 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5545 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5546 want_flags |= TX_CON_CLO_SET;
5547 }
5548
5549 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5550 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5551 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5552
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5553 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5554 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5555 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5556 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5557
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5558 /*************************************************************
5559 * OK, that's finished for the headers. We have done what we *
5560 * could. Let's switch to the DATA state. *
5561 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5562
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5563 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5564
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5565 /* if the user wants to log as soon as possible, without counting
5566 * bytes from the server, then this is the right moment. We have
5567 * to temporarily assign bytes_out to log what we currently have.
5568 */
5569 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5570 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5571 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5572 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5573 t->logs.bytes_out = 0;
5574 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5575
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5576 /* Note: we must not try to cheat by jumping directly to DATA,
5577 * otherwise we would not let the client side wake up.
5578 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5579
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5580 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5581 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5582 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5583}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5584
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5585/* This function is an analyser which forwards response body (including chunk
5586 * sizes if any). It is called as soon as we must forward, even if we forward
5587 * zero byte. The only situation where it must not be called is when we're in
5588 * tunnel mode and we want to forward till the close. It's used both to forward
5589 * remaining data and to resync after end of body. It expects the msg_state to
5590 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5591 * 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]5592 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5593 * bytes of pending data + the headers if not already done (between sol and sov).
5594 * 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]5595 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5596int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5597{
5598 struct http_txn *txn = &s->txn;
5599 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5600 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5601 static struct buffer *tmpbuf = NULL;
5602 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5603 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5604
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5605 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5606 return 0;
5607
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5608 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]5609 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5610 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5611 /* Output closed while we were sending data. We must abort and
5612 * wake the other side up.
5613 */
5614 msg->msg_state = HTTP_MSG_ERROR;
5615 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5616 return 1;
5617 }
5618
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5619 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5620 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5621
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5622 /* this is the first time we need the compression buffer */
5623 if (s->comp_algo != NULL && tmpbuf == NULL) {
5624 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5625 goto aborted_xfer; /* no memory */
5626 }
5627
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5628 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5629 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5630 * rep->buf.p still points to the beginning of the message and msg->sol
5631 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5632 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5633 channel_forward(res, msg->sov);
5634 msg->next = 0;
5635 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5636
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5637 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5638 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5639 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5640 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5641 }
5642
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5643 if (s->comp_algo != NULL) {
5644 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5645 if (ret < 0)
5646 goto missing_data; /* not enough spaces in buffers */
5647 compressing = 1;
5648 }
5649
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5650 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5651 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5652 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5653 if (s->comp_algo == NULL) {
5654 bytes = msg->sov - msg->sol;
5655 if (msg->chunk_len || bytes) {
5656 msg->sol = msg->sov;
5657 msg->next -= bytes; /* will be forwarded */
5658 msg->chunk_len += bytes;
5659 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5660 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5661 }
5662
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5663 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5664 int ret;
5665
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5666 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5667 if (compressing) {
5668 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5669 if (ret < 0)
5670 goto aborted_xfer;
5671 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5672
5673 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5674 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5675
5676 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5677 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5678 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5679 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5680 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5681 if (compressing && consumed_data) {
5682 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5683 compressing = 0;
5684 }
5685 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5686 }
5687 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5688 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5689 * set ->sov and ->next to point to the body and switch to DATA or
5690 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5691 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5692 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5693
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5694 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5695 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5696 else if (ret < 0) {
5697 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5698 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]5699 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5700 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5701 if (compressing) {
5702 if (likely(msg->chunk_len > 0)) {
5703 /* skipping data if we are in compression mode */
5704 b_adv(res->buf, msg->next);
5705 msg->next = 0;
5706 msg->sov = 0;
5707 msg->sol = 0;
5708 } else {
5709 if (consumed_data) {
5710 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5711 compressing = 0;
5712 }
5713 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5714 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5715 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5716 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5717 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5718 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5719 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5720
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5721 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5722 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5723 else if (ret < 0) {
5724 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5725 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]5726 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5727 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5728 /* skipping data in buffer for compression */
5729 if (compressing) {
5730 b_adv(res->buf, msg->next);
5731 msg->next = 0;
5732 msg->sov = 0;
5733 msg->sol = 0;
5734 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5735 /* we're in MSG_CHUNK_SIZE now */
5736 }
5737 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5738 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5739
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5740 if (ret == 0)
5741 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5742 else if (ret < 0) {
5743 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5744 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]5745 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5746 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5747 if (s->comp_algo != NULL) {
5748 /* forwarding trailers */
5749 channel_forward(res, msg->next);
5750 msg->next = 0;
5751 }
5752 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5753 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5754 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5755 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5756 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5757 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5758 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5759 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5760 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5761 if (http_resync_states(s)) {
5762 http_silent_debug(__LINE__, s);
5763 /* some state changes occurred, maybe the analyser
5764 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5765 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5766 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5767 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5768 /* response errors are most likely due to
5769 * the client aborting the transfer.
5770 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5771 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5772 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5773 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5774 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5775 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5776 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5777 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5778 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5779 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5780 }
5781 }
5782
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5783 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5784 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5785 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5786 compressing = 0;
5787 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5788
5789 if (res->flags & CF_SHUTW)
5790 goto aborted_xfer;
5791
5792 /* stop waiting for data if the input is closed before the end. If the
5793 * client side was already closed, it means that the client has aborted,
5794 * so we don't want to count this as a server abort. Otherwise it's a
5795 * server abort.
5796 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5797 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5798 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5799 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5800 if (!(s->flags & SN_ERR_MASK))
5801 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5802 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5803 if (objt_server(s->target))
5804 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5805 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5806 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5807
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5808 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5809 if (!s->req->analysers)
5810 goto return_bad_res;
5811
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5812 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5813 if (s->comp_algo == NULL) {
5814 bytes = msg->sov - msg->sol;
5815 if (msg->chunk_len || bytes) {
5816 msg->sol = msg->sov;
5817 msg->next -= bytes; /* will be forwarded */
5818 msg->chunk_len += bytes;
5819 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5820 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5821 }
5822
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5823 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5824 * 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]5825 * Similarly, with keep-alive on the client side, we don't want to forward a
5826 * close.
5827 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5828 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5829 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5830 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5831 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5832
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5833 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5834 * 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]5835 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5836 * modes are already handled by the stream sock layer. We must not do
5837 * this in content-length mode because it could present the MSG_MORE
5838 * flag with the last block of forwarded data, which would cause an
5839 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5840 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5841 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5842 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5843
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5844 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5845 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5846 return 0;
5847
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5848 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5849 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5850 if (objt_server(s->target))
5851 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5852
5853 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5854 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5855 /* don't send any error message as we're in the body */
5856 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5857 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5858 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]5859 if (objt_server(s->target))
5860 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5861
5862 if (!(s->flags & SN_ERR_MASK))
5863 s->flags |= SN_ERR_PRXCOND;
5864 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5865 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5866 return 0;
5867
5868 aborted_xfer:
5869 txn->rsp.msg_state = HTTP_MSG_ERROR;
5870 /* don't send any error message as we're in the body */
5871 stream_int_retnclose(res->cons, NULL);
5872 res->analysers = 0;
5873 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5874
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5875 s->fe->fe_counters.cli_aborts++;
5876 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5877 if (objt_server(s->target))
5878 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5879
5880 if (!(s->flags & SN_ERR_MASK))
5881 s->flags |= SN_ERR_CLICL;
5882 if (!(s->flags & SN_FINST_MASK))
5883 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5884 return 0;
5885}
5886
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5887/* Iterate the same filter through all request headers.
5888 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5889 * Since it can manage the switch to another backend, it updates the per-proxy
5890 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5891 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5892int 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]5893{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5894 char term;
5895 char *cur_ptr, *cur_end, *cur_next;
5896 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5897 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5898 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5899 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5900
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5901 last_hdr = 0;
5902
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5903 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5904 old_idx = 0;
5905
5906 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5907 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5908 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5909 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5910 (exp->action == ACT_ALLOW ||
5911 exp->action == ACT_DENY ||
5912 exp->action == ACT_TARPIT))
5913 return 0;
5914
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5915 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5916 if (!cur_idx)
5917 break;
5918
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5919 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5920 cur_ptr = cur_next;
5921 cur_end = cur_ptr + cur_hdr->len;
5922 cur_next = cur_end + cur_hdr->cr + 1;
5923
5924 /* Now we have one header between cur_ptr and cur_end,
5925 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5926 */
5927
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5928 /* The annoying part is that pattern matching needs
5929 * that we modify the contents to null-terminate all
5930 * strings before testing them.
5931 */
5932
5933 term = *cur_end;
5934 *cur_end = '\0';
5935
5936 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5937 switch (exp->action) {
5938 case ACT_SETBE:
5939 /* It is not possible to jump a second time.
5940 * FIXME: should we return an HTTP/500 here so that
5941 * the admin knows there's a problem ?
5942 */
5943 if (t->be != t->fe)
5944 break;
5945
5946 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5947 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5948 last_hdr = 1;
5949 break;
5950
5951 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5952 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5953 last_hdr = 1;
5954 break;
5955
5956 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5957 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5958 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5959
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5960 t->fe->fe_counters.denied_req++;
5961 if (t->fe != t->be)
5962 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5963 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5964 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5965
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5966 break;
5967
5968 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5969 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5970 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5971
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5972 t->fe->fe_counters.denied_req++;
5973 if (t->fe != t->be)
5974 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5975 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5976 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5977
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5978 break;
5979
5980 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5981 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
5982 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5983 /* FIXME: if the user adds a newline in the replacement, the
5984 * index will not be recalculated for now, and the new line
5985 * will not be counted as a new header.
5986 */
5987
5988 cur_end += delta;
5989 cur_next += delta;
5990 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5991 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5992 break;
5993
5994 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5995 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5996 cur_next += delta;
5997
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5998 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5999 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6000 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6001 cur_hdr->len = 0;
6002 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6003 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6004 break;
6005
6006 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6007 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6008 if (cur_end)
6009 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6010
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6011 /* keep the link from this header to next one in case of later
6012 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6013 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6014 old_idx = cur_idx;
6015 }
6016 return 0;
6017}
6018
6019
6020/* Apply the filter to the request line.
6021 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6022 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6023 * Since it can manage the switch to another backend, it updates the per-proxy
6024 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6025 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6026int 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]6027{
6028 char term;
6029 char *cur_ptr, *cur_end;
6030 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6031 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6032 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6033
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6034 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6035 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6036 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6037 (exp->action == ACT_ALLOW ||
6038 exp->action == ACT_DENY ||
6039 exp->action == ACT_TARPIT))
6040 return 0;
6041 else if (exp->action == ACT_REMOVE)
6042 return 0;
6043
6044 done = 0;
6045
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6046 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6047 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6048
6049 /* Now we have the request line between cur_ptr and cur_end */
6050
6051 /* The annoying part is that pattern matching needs
6052 * that we modify the contents to null-terminate all
6053 * strings before testing them.
6054 */
6055
6056 term = *cur_end;
6057 *cur_end = '\0';
6058
6059 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6060 switch (exp->action) {
6061 case ACT_SETBE:
6062 /* It is not possible to jump a second time.
6063 * FIXME: should we return an HTTP/500 here so that
6064 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6065 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6066 if (t->be != t->fe)
6067 break;
6068
6069 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6070 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6071 done = 1;
6072 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6073
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6074 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6075 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6076 done = 1;
6077 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6078
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6079 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6080 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6081
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6082 t->fe->fe_counters.denied_req++;
6083 if (t->fe != t->be)
6084 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6085 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6086 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6087
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6088 done = 1;
6089 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6090
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6091 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6092 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6093
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6094 t->fe->fe_counters.denied_req++;
6095 if (t->fe != t->be)
6096 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6097 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6098 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6099
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6100 done = 1;
6101 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6102
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6103 case ACT_REPLACE:
6104 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6105 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6106 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6107 /* FIXME: if the user adds a newline in the replacement, the
6108 * index will not be recalculated for now, and the new line
6109 * will not be counted as a new header.
6110 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6111
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6112 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6113 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6114 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6115 HTTP_MSG_RQMETH,
6116 cur_ptr, cur_end + 1,
6117 NULL, NULL);
6118 if (unlikely(!cur_end))
6119 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6120
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6121 /* we have a full request and we know that we have either a CR
6122 * or an LF at <ptr>.
6123 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6124 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6125 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]6126 /* there is no point trying this regex on headers */
6127 return 1;
6128 }
6129 }
6130 *cur_end = term; /* restore the string terminator */
6131 return done;
6132}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6133
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6134
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6135
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6136/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6137 * 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]6138 * 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]6139 * unparsable request. Since it can manage the switch to another backend, it
6140 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6141 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6142int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6143{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6144 struct http_txn *txn = &s->txn;
6145 struct hdr_exp *exp;
6146
6147 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6148 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6149
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6150 /*
6151 * The interleaving of transformations and verdicts
6152 * makes it difficult to decide to continue or stop
6153 * the evaluation.
6154 */
6155
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6156 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6157 break;
6158
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6159 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6160 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6161 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6162 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6163
6164 /* if this filter had a condition, evaluate it now and skip to
6165 * next filter if the condition does not match.
6166 */
6167 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6168 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]6169 ret = acl_pass(ret);
6170 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6171 ret = !ret;
6172
6173 if (!ret)
6174 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6175 }
6176
6177 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6178 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6179 if (unlikely(ret < 0))
6180 return -1;
6181
6182 if (likely(ret == 0)) {
6183 /* The filter did not match the request, it can be
6184 * iterated through all headers.
6185 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6186 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6187 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6188 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6189 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6190}
6191
6192
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6193
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6194/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6195 * Try to retrieve the server associated to the appsession.
6196 * If the server is found, it's assigned to the session.
6197 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6198void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6199 struct http_txn *txn = &t->txn;
6200 appsess *asession = NULL;
6201 char *sessid_temp = NULL;
6202
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6203 if (len > t->be->appsession_len) {
6204 len = t->be->appsession_len;
6205 }
6206
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6207 if (t->be->options2 & PR_O2_AS_REQL) {
6208 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6209 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6210 /* 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]6211 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6212 }
6213
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6214 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6215 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6216 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6217 return;
6218 }
6219
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6220 memcpy(txn->sessid, buf, len);
6221 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6222 }
6223
6224 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6225 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6226 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6227 return;
6228 }
6229
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6230 memcpy(sessid_temp, buf, len);
6231 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6232
6233 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6234 /* free previously allocated memory */
6235 pool_free2(apools.sessid, sessid_temp);
6236
6237 if (asession != NULL) {
6238 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6239 if (!(t->be->options2 & PR_O2_AS_REQL))
6240 asession->request_count++;
6241
6242 if (asession->serverid != NULL) {
6243 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6244
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6245 while (srv) {
6246 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6247 if ((srv->state & SRV_RUNNING) ||
6248 (t->be->options & PR_O_PERSIST) ||
6249 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6250 /* we found the server and it's usable */
6251 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6252 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6253 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6254 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6255
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6256 break;
6257 } else {
6258 txn->flags &= ~TX_CK_MASK;
6259 txn->flags |= TX_CK_DOWN;
6260 }
6261 }
6262 srv = srv->next;
6263 }
6264 }
6265 }
6266}
6267
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6268/* Find the end of a cookie value contained between <s> and <e>. It works the
6269 * same way as with headers above except that the semi-colon also ends a token.
6270 * See RFC2965 for more information. Note that it requires a valid header to
6271 * return a valid result.
6272 */
6273char *find_cookie_value_end(char *s, const char *e)
6274{
6275 int quoted, qdpair;
6276
6277 quoted = qdpair = 0;
6278 for (; s < e; s++) {
6279 if (qdpair) qdpair = 0;
6280 else if (quoted) {
6281 if (*s == '\\') qdpair = 1;
6282 else if (*s == '"') quoted = 0;
6283 }
6284 else if (*s == '"') quoted = 1;
6285 else if (*s == ',' || *s == ';') return s;
6286 }
6287 return s;
6288}
6289
6290/* Delete a value in a header between delimiters <from> and <next> in buffer
6291 * <buf>. The number of characters displaced is returned, and the pointer to
6292 * the first delimiter is updated if required. The function tries as much as
6293 * possible to respect the following principles :
6294 * - replace <from> delimiter by the <next> one unless <from> points to a
6295 * colon, in which case <next> is simply removed
6296 * - set exactly one space character after the new first delimiter, unless
6297 * there are not enough characters in the block being moved to do so.
6298 * - remove unneeded spaces before the previous delimiter and after the new
6299 * one.
6300 *
6301 * It is the caller's responsibility to ensure that :
6302 * - <from> points to a valid delimiter or the colon ;
6303 * - <next> points to a valid delimiter or the final CR/LF ;
6304 * - there are non-space chars before <from> ;
6305 * - there is a CR/LF at or after <next>.
6306 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6307int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6308{
6309 char *prev = *from;
6310
6311 if (*prev == ':') {
6312 /* We're removing the first value, preserve the colon and add a
6313 * space if possible.
6314 */
6315 if (!http_is_crlf[(unsigned char)*next])
6316 next++;
6317 prev++;
6318 if (prev < next)
6319 *prev++ = ' ';
6320
6321 while (http_is_spht[(unsigned char)*next])
6322 next++;
6323 } else {
6324 /* Remove useless spaces before the old delimiter. */
6325 while (http_is_spht[(unsigned char)*(prev-1)])
6326 prev--;
6327 *from = prev;
6328
6329 /* copy the delimiter and if possible a space if we're
6330 * not at the end of the line.
6331 */
6332 if (!http_is_crlf[(unsigned char)*next]) {
6333 *prev++ = *next++;
6334 if (prev + 1 < next)
6335 *prev++ = ' ';
6336 while (http_is_spht[(unsigned char)*next])
6337 next++;
6338 }
6339 }
6340 return buffer_replace2(buf, prev, next, NULL, 0);
6341}
6342
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6343/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6344 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6345 * desirable to call it only when needed. This code is quite complex because
6346 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6347 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6348 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6349void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6350{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6351 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6352 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6353 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6354 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6355 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6356
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6357 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6358 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6359 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6360
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6361 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6362 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6363 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6364
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6365 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6366 hdr_beg = hdr_next;
6367 hdr_end = hdr_beg + cur_hdr->len;
6368 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6369
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6370 /* We have one full header between hdr_beg and hdr_end, and the
6371 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6372 * "Cookie:" headers.
6373 */
6374
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6375 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6376 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6377 old_idx = cur_idx;
6378 continue;
6379 }
6380
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6381 del_from = NULL; /* nothing to be deleted */
6382 preserve_hdr = 0; /* assume we may kill the whole header */
6383
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6384 /* Now look for cookies. Conforming to RFC2109, we have to support
6385 * attributes whose name begin with a '$', and associate them with
6386 * the right cookie, if we want to delete this cookie.
6387 * So there are 3 cases for each cookie read :
6388 * 1) it's a special attribute, beginning with a '$' : ignore it.
6389 * 2) it's a server id cookie that we *MAY* want to delete : save
6390 * some pointers on it (last semi-colon, beginning of cookie...)
6391 * 3) it's an application cookie : we *MAY* have to delete a previous
6392 * "special" cookie.
6393 * At the end of loop, if a "special" cookie remains, we may have to
6394 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6395 * *MUST* delete it.
6396 *
6397 * Note: RFC2965 is unclear about the processing of spaces around
6398 * the equal sign in the ATTR=VALUE form. A careful inspection of
6399 * the RFC explicitly allows spaces before it, and not within the
6400 * tokens (attrs or values). An inspection of RFC2109 allows that
6401 * too but section 10.1.3 lets one think that spaces may be allowed
6402 * after the equal sign too, resulting in some (rare) buggy
6403 * implementations trying to do that. So let's do what servers do.
6404 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6405 * allowed quoted strings in values, with any possible character
6406 * after a backslash, including control chars and delimitors, which
6407 * causes parsing to become ambiguous. Browsers also allow spaces
6408 * within values even without quotes.
6409 *
6410 * We have to keep multiple pointers in order to support cookie
6411 * removal at the beginning, middle or end of header without
6412 * corrupting the header. All of these headers are valid :
6413 *
6414 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6415 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6416 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6417 * | | | | | | | | |
6418 * | | | | | | | | hdr_end <--+
6419 * | | | | | | | +--> next
6420 * | | | | | | +----> val_end
6421 * | | | | | +-----------> val_beg
6422 * | | | | +--------------> equal
6423 * | | | +----------------> att_end
6424 * | | +---------------------> att_beg
6425 * | +--------------------------> prev
6426 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6427 */
6428
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6429 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6430 /* Iterate through all cookies on this line */
6431
6432 /* find att_beg */
6433 att_beg = prev + 1;
6434 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6435 att_beg++;
6436
6437 /* find att_end : this is the first character after the last non
6438 * space before the equal. It may be equal to hdr_end.
6439 */
6440 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6441
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6442 while (equal < hdr_end) {
6443 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6444 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6445 if (http_is_spht[(unsigned char)*equal++])
6446 continue;
6447 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6448 }
6449
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6450 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6451 * is between <att_beg> and <equal>, both may be identical.
6452 */
6453
6454 /* look for end of cookie if there is an equal sign */
6455 if (equal < hdr_end && *equal == '=') {
6456 /* look for the beginning of the value */
6457 val_beg = equal + 1;
6458 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6459 val_beg++;
6460
6461 /* find the end of the value, respecting quotes */
6462 next = find_cookie_value_end(val_beg, hdr_end);
6463
6464 /* make val_end point to the first white space or delimitor after the value */
6465 val_end = next;
6466 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6467 val_end--;
6468 } else {
6469 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6470 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6471
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6472 /* We have nothing to do with attributes beginning with '$'. However,
6473 * they will automatically be removed if a header before them is removed,
6474 * since they're supposed to be linked together.
6475 */
6476 if (*att_beg == '$')
6477 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6478
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6479 /* Ignore cookies with no equal sign */
6480 if (equal == next) {
6481 /* This is not our cookie, so we must preserve it. But if we already
6482 * scheduled another cookie for removal, we cannot remove the
6483 * complete header, but we can remove the previous block itself.
6484 */
6485 preserve_hdr = 1;
6486 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6487 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6488 val_end += delta;
6489 next += delta;
6490 hdr_end += delta;
6491 hdr_next += delta;
6492 cur_hdr->len += delta;
6493 http_msg_move_end(&txn->req, delta);
6494 prev = del_from;
6495 del_from = NULL;
6496 }
6497 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6498 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6499
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6500 /* if there are spaces around the equal sign, we need to
6501 * strip them otherwise we'll get trouble for cookie captures,
6502 * or even for rewrites. Since this happens extremely rarely,
6503 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6504 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6505 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6506 int stripped_before = 0;
6507 int stripped_after = 0;
6508
6509 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6510 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6511 equal += stripped_before;
6512 val_beg += stripped_before;
6513 }
6514
6515 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6516 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6517 val_beg += stripped_after;
6518 stripped_before += stripped_after;
6519 }
6520
6521 val_end += stripped_before;
6522 next += stripped_before;
6523 hdr_end += stripped_before;
6524 hdr_next += stripped_before;
6525 cur_hdr->len += stripped_before;
6526 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6527 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6528 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6529
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6530 /* First, let's see if we want to capture this cookie. We check
6531 * that we don't already have a client side cookie, because we
6532 * can only capture one. Also as an optimisation, we ignore
6533 * cookies shorter than the declared name.
6534 */
6535 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6536 (val_end - att_beg >= t->fe->capture_namelen) &&
6537 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6538 int log_len = val_end - att_beg;
6539
6540 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6541 Alert("HTTP logging : out of memory.\n");
6542 } else {
6543 if (log_len > t->fe->capture_len)
6544 log_len = t->fe->capture_len;
6545 memcpy(txn->cli_cookie, att_beg, log_len);
6546 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6547 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6548 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6549
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6550 /* Persistence cookies in passive, rewrite or insert mode have the
6551 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6552 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6553 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6554 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6555 * For cookies in prefix mode, the form is :
6556 *
6557 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6558 */
6559 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6560 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6561 struct server *srv = t->be->srv;
6562 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6563
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6564 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6565 * have the server ID between val_beg and delim, and the original cookie between
6566 * delim+1 and val_end. Otherwise, delim==val_end :
6567 *
6568 * Cookie: NAME=SRV; # in all but prefix modes
6569 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6570 * | || || | |+-> next
6571 * | || || | +--> val_end
6572 * | || || +---------> delim
6573 * | || |+------------> val_beg
6574 * | || +-------------> att_end = equal
6575 * | |+-----------------> att_beg
6576 * | +------------------> prev
6577 * +-------------------------> hdr_beg
6578 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6579
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6580 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6581 for (delim = val_beg; delim < val_end; delim++)
6582 if (*delim == COOKIE_DELIM)
6583 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6584 } else {
6585 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6586 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6587 /* Now check if the cookie contains a date field, which would
6588 * appear after a vertical bar ('|') just after the server name
6589 * and before the delimiter.
6590 */
6591 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6592 if (vbar1) {
6593 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6594 * right is the last seen date. It is a base64 encoded
6595 * 30-bit value representing the UNIX date since the
6596 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6597 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6598 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6599 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6600 if (val_end - vbar1 >= 5) {
6601 val = b64tos30(vbar1);
6602 if (val > 0)
6603 txn->cookie_last_date = val << 2;
6604 }
6605 /* look for a second vertical bar */
6606 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6607 if (vbar1 && (val_end - vbar1 > 5)) {
6608 val = b64tos30(vbar1 + 1);
6609 if (val > 0)
6610 txn->cookie_first_date = val << 2;
6611 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6612 }
6613 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6614
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6615 /* if the cookie has an expiration date and the proxy wants to check
6616 * it, then we do that now. We first check if the cookie is too old,
6617 * then only if it has expired. We detect strict overflow because the
6618 * time resolution here is not great (4 seconds). Cookies with dates
6619 * in the future are ignored if their offset is beyond one day. This
6620 * allows an admin to fix timezone issues without expiring everyone
6621 * and at the same time avoids keeping unwanted side effects for too
6622 * long.
6623 */
6624 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6625 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6626 ((signed)(txn->cookie_first_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_OLD;
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 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6634 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6635 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6636 txn->flags &= ~TX_CK_MASK;
6637 txn->flags |= TX_CK_EXPIRED;
6638 delim = val_beg; // let's pretend we have not found the cookie
6639 txn->cookie_first_date = 0;
6640 txn->cookie_last_date = 0;
6641 }
6642
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6643 /* Here, we'll look for the first running server which supports the cookie.
6644 * This allows to share a same cookie between several servers, for example
6645 * to dedicate backup servers to specific servers only.
6646 * However, to prevent clients from sticking to cookie-less backup server
6647 * when they have incidentely learned an empty cookie, we simply ignore
6648 * empty cookies and mark them as invalid.
6649 * The same behaviour is applied when persistence must be ignored.
6650 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6651 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6652 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6653
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6654 while (srv) {
6655 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6656 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6657 if ((srv->state & SRV_RUNNING) ||
6658 (t->be->options & PR_O_PERSIST) ||
6659 (t->flags & SN_FORCE_PRST)) {
6660 /* we found the server and we can use it */
6661 txn->flags &= ~TX_CK_MASK;
6662 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6663 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6664 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6665 break;
6666 } else {
6667 /* we found a server, but it's down,
6668 * mark it as such and go on in case
6669 * another one is available.
6670 */
6671 txn->flags &= ~TX_CK_MASK;
6672 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6673 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6674 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6675 srv = srv->next;
6676 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6677
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6678 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6679 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6680 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6681 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6682 txn->flags |= TX_CK_UNUSED;
6683 else
6684 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6685 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6686
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6687 /* depending on the cookie mode, we may have to either :
6688 * - delete the complete cookie if we're in insert+indirect mode, so that
6689 * the server never sees it ;
6690 * - remove the server id from the cookie value, and tag the cookie as an
6691 * application cookie so that it does not get accidentely removed later,
6692 * if we're in cookie prefix mode
6693 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6694 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6695 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6696
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6697 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6698 val_end += delta;
6699 next += delta;
6700 hdr_end += delta;
6701 hdr_next += delta;
6702 cur_hdr->len += delta;
6703 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6704
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6705 del_from = NULL;
6706 preserve_hdr = 1; /* we want to keep this cookie */
6707 }
6708 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6709 (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]6710 del_from = prev;
6711 }
6712 } else {
6713 /* This is not our cookie, so we must preserve it. But if we already
6714 * scheduled another cookie for removal, we cannot remove the
6715 * complete header, but we can remove the previous block itself.
6716 */
6717 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6718
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6719 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6720 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6721 if (att_beg >= del_from)
6722 att_beg += delta;
6723 if (att_end >= del_from)
6724 att_end += delta;
6725 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6726 val_end += delta;
6727 next += delta;
6728 hdr_end += delta;
6729 hdr_next += delta;
6730 cur_hdr->len += delta;
6731 http_msg_move_end(&txn->req, delta);
6732 prev = del_from;
6733 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6734 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6735 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6736
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6737 /* Look for the appsession cookie unless persistence must be ignored */
6738 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6739 int cmp_len, value_len;
6740 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6741
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6742 if (t->be->options2 & PR_O2_AS_PFX) {
6743 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6744 value_begin = att_beg + t->be->appsession_name_len;
6745 value_len = val_end - att_beg - t->be->appsession_name_len;
6746 } else {
6747 cmp_len = att_end - att_beg;
6748 value_begin = val_beg;
6749 value_len = val_end - val_beg;
6750 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6751
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6752 /* let's see if the cookie is our appcookie */
6753 if (cmp_len == t->be->appsession_name_len &&
6754 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6755 manage_client_side_appsession(t, value_begin, value_len);
6756 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6757 }
6758
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6759 /* continue with next cookie on this header line */
6760 att_beg = next;
6761 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6762
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6763 /* There are no more cookies on this line.
6764 * We may still have one (or several) marked for deletion at the
6765 * end of the line. We must do this now in two ways :
6766 * - if some cookies must be preserved, we only delete from the
6767 * mark to the end of line ;
6768 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6769 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6770 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6771 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6772 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6773 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6774 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6775 cur_hdr->len += delta;
6776 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6777 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6778
6779 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6780 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6781 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6782 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6783 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6784 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6785 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6786 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6787 }
6788
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6789 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6790 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6791 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6792}
6793
6794
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6795/* Iterate the same filter through all response headers contained in <rtr>.
6796 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6797 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6798int 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]6799{
6800 char term;
6801 char *cur_ptr, *cur_end, *cur_next;
6802 int cur_idx, old_idx, last_hdr;
6803 struct http_txn *txn = &t->txn;
6804 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6805 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6806
6807 last_hdr = 0;
6808
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6809 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6810 old_idx = 0;
6811
6812 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6813 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6814 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6815 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6816 (exp->action == ACT_ALLOW ||
6817 exp->action == ACT_DENY))
6818 return 0;
6819
6820 cur_idx = txn->hdr_idx.v[old_idx].next;
6821 if (!cur_idx)
6822 break;
6823
6824 cur_hdr = &txn->hdr_idx.v[cur_idx];
6825 cur_ptr = cur_next;
6826 cur_end = cur_ptr + cur_hdr->len;
6827 cur_next = cur_end + cur_hdr->cr + 1;
6828
6829 /* Now we have one header between cur_ptr and cur_end,
6830 * and the next header starts at cur_next.
6831 */
6832
6833 /* The annoying part is that pattern matching needs
6834 * that we modify the contents to null-terminate all
6835 * strings before testing them.
6836 */
6837
6838 term = *cur_end;
6839 *cur_end = '\0';
6840
6841 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6842 switch (exp->action) {
6843 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6844 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6845 last_hdr = 1;
6846 break;
6847
6848 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6849 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6850 last_hdr = 1;
6851 break;
6852
6853 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6854 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6855 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6856 /* FIXME: if the user adds a newline in the replacement, the
6857 * index will not be recalculated for now, and the new line
6858 * will not be counted as a new header.
6859 */
6860
6861 cur_end += delta;
6862 cur_next += delta;
6863 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6864 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6865 break;
6866
6867 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6868 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6869 cur_next += delta;
6870
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6871 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6872 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6873 txn->hdr_idx.used--;
6874 cur_hdr->len = 0;
6875 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6876 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6877 break;
6878
6879 }
6880 }
6881 if (cur_end)
6882 *cur_end = term; /* restore the string terminator */
6883
6884 /* keep the link from this header to next one in case of later
6885 * removal of next header.
6886 */
6887 old_idx = cur_idx;
6888 }
6889 return 0;
6890}
6891
6892
6893/* Apply the filter to the status line in the response buffer <rtr>.
6894 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6895 * or -1 if a replacement resulted in an invalid status line.
6896 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6897int 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]6898{
6899 char term;
6900 char *cur_ptr, *cur_end;
6901 int done;
6902 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6903 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6904
6905
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6906 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6907 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6908 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6909 (exp->action == ACT_ALLOW ||
6910 exp->action == ACT_DENY))
6911 return 0;
6912 else if (exp->action == ACT_REMOVE)
6913 return 0;
6914
6915 done = 0;
6916
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6917 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6918 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6919
6920 /* Now we have the status line between cur_ptr and cur_end */
6921
6922 /* The annoying part is that pattern matching needs
6923 * that we modify the contents to null-terminate all
6924 * strings before testing them.
6925 */
6926
6927 term = *cur_end;
6928 *cur_end = '\0';
6929
6930 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6931 switch (exp->action) {
6932 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6933 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6934 done = 1;
6935 break;
6936
6937 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6938 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6939 done = 1;
6940 break;
6941
6942 case ACT_REPLACE:
6943 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6944 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6945 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6946 /* FIXME: if the user adds a newline in the replacement, the
6947 * index will not be recalculated for now, and the new line
6948 * will not be counted as a new header.
6949 */
6950
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6951 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6952 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6953 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6954 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6955 cur_ptr, cur_end + 1,
6956 NULL, NULL);
6957 if (unlikely(!cur_end))
6958 return -1;
6959
6960 /* we have a full respnse and we know that we have either a CR
6961 * or an LF at <ptr>.
6962 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6963 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]6964 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]6965 /* there is no point trying this regex on headers */
6966 return 1;
6967 }
6968 }
6969 *cur_end = term; /* restore the string terminator */
6970 return done;
6971}
6972
6973
6974
6975/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6976 * 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]6977 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6978 * unparsable response.
6979 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6980int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6981{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6982 struct http_txn *txn = &s->txn;
6983 struct hdr_exp *exp;
6984
6985 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6986 int ret;
6987
6988 /*
6989 * The interleaving of transformations and verdicts
6990 * makes it difficult to decide to continue or stop
6991 * the evaluation.
6992 */
6993
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6994 if (txn->flags & TX_SVDENY)
6995 break;
6996
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6997 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6998 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6999 exp->action == ACT_PASS)) {
7000 exp = exp->next;
7001 continue;
7002 }
7003
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7004 /* if this filter had a condition, evaluate it now and skip to
7005 * next filter if the condition does not match.
7006 */
7007 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7008 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]7009 ret = acl_pass(ret);
7010 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7011 ret = !ret;
7012 if (!ret)
7013 continue;
7014 }
7015
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7016 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7017 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7018 if (unlikely(ret < 0))
7019 return -1;
7020
7021 if (likely(ret == 0)) {
7022 /* The filter did not match the response, it can be
7023 * iterated through all headers.
7024 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7025 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7026 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7027 }
7028 return 0;
7029}
7030
7031
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7032/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7033 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7034 * desirable to call it only when needed. This function is also used when we
7035 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7036 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7037void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7038{
7039 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7040 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7041 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7042 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7043 char *hdr_beg, *hdr_end, *hdr_next;
7044 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7045
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7046 /* Iterate through the headers.
7047 * we start with the start line.
7048 */
7049 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7050 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7051
7052 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7053 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7054 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7055
7056 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7057 hdr_beg = hdr_next;
7058 hdr_end = hdr_beg + cur_hdr->len;
7059 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7060
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7061 /* We have one full header between hdr_beg and hdr_end, and the
7062 * next header starts at hdr_next. We're only interested in
7063 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7064 */
7065
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7066 is_cookie2 = 0;
7067 prev = hdr_beg + 10;
7068 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7069 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7070 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7071 if (!val) {
7072 old_idx = cur_idx;
7073 continue;
7074 }
7075 is_cookie2 = 1;
7076 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7077 }
7078
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7079 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7080 * <prev> points to the colon.
7081 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7082 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7083
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7084 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7085 * check-cache is enabled) and we are not interested in checking
7086 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7087 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7088 if (t->be->cookie_name == NULL &&
7089 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7090 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7091 return;
7092
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7093 /* OK so now we know we have to process this response cookie.
7094 * The format of the Set-Cookie header is slightly different
7095 * from the format of the Cookie header in that it does not
7096 * support the comma as a cookie delimiter (thus the header
7097 * cannot be folded) because the Expires attribute described in
7098 * the original Netscape's spec may contain an unquoted date
7099 * with a comma inside. We have to live with this because
7100 * many browsers don't support Max-Age and some browsers don't
7101 * support quoted strings. However the Set-Cookie2 header is
7102 * clean.
7103 *
7104 * We have to keep multiple pointers in order to support cookie
7105 * removal at the beginning, middle or end of header without
7106 * corrupting the header (in case of set-cookie2). A special
7107 * pointer, <scav> points to the beginning of the set-cookie-av
7108 * fields after the first semi-colon. The <next> pointer points
7109 * either to the end of line (set-cookie) or next unquoted comma
7110 * (set-cookie2). All of these headers are valid :
7111 *
7112 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7113 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7114 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7115 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7116 * | | | | | | | | | |
7117 * | | | | | | | | +-> next hdr_end <--+
7118 * | | | | | | | +------------> scav
7119 * | | | | | | +--------------> val_end
7120 * | | | | | +--------------------> val_beg
7121 * | | | | +----------------------> equal
7122 * | | | +------------------------> att_end
7123 * | | +----------------------------> att_beg
7124 * | +------------------------------> prev
7125 * +-----------------------------------------> hdr_beg
7126 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7127
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7128 for (; prev < hdr_end; prev = next) {
7129 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7130
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7131 /* find att_beg */
7132 att_beg = prev + 1;
7133 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7134 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7135
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7136 /* find att_end : this is the first character after the last non
7137 * space before the equal. It may be equal to hdr_end.
7138 */
7139 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7140
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7141 while (equal < hdr_end) {
7142 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7143 break;
7144 if (http_is_spht[(unsigned char)*equal++])
7145 continue;
7146 att_end = equal;
7147 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7148
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7149 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7150 * is between <att_beg> and <equal>, both may be identical.
7151 */
7152
7153 /* look for end of cookie if there is an equal sign */
7154 if (equal < hdr_end && *equal == '=') {
7155 /* look for the beginning of the value */
7156 val_beg = equal + 1;
7157 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7158 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7159
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7160 /* find the end of the value, respecting quotes */
7161 next = find_cookie_value_end(val_beg, hdr_end);
7162
7163 /* make val_end point to the first white space or delimitor after the value */
7164 val_end = next;
7165 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7166 val_end--;
7167 } else {
7168 /* <equal> points to next comma, semi-colon or EOL */
7169 val_beg = val_end = next = equal;
7170 }
7171
7172 if (next < hdr_end) {
7173 /* Set-Cookie2 supports multiple cookies, and <next> points to
7174 * a colon or semi-colon before the end. So skip all attr-value
7175 * pairs and look for the next comma. For Set-Cookie, since
7176 * commas are permitted in values, skip to the end.
7177 */
7178 if (is_cookie2)
7179 next = find_hdr_value_end(next, hdr_end);
7180 else
7181 next = hdr_end;
7182 }
7183
7184 /* Now everything is as on the diagram above */
7185
7186 /* Ignore cookies with no equal sign */
7187 if (equal == val_end)
7188 continue;
7189
7190 /* If there are spaces around the equal sign, we need to
7191 * strip them otherwise we'll get trouble for cookie captures,
7192 * or even for rewrites. Since this happens extremely rarely,
7193 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7194 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7195 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7196 int stripped_before = 0;
7197 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7198
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7199 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7200 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7201 equal += stripped_before;
7202 val_beg += stripped_before;
7203 }
7204
7205 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7206 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7207 val_beg += stripped_after;
7208 stripped_before += stripped_after;
7209 }
7210
7211 val_end += stripped_before;
7212 next += stripped_before;
7213 hdr_end += stripped_before;
7214 hdr_next += stripped_before;
7215 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7216 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7217 }
7218
7219 /* First, let's see if we want to capture this cookie. We check
7220 * that we don't already have a server side cookie, because we
7221 * can only capture one. Also as an optimisation, we ignore
7222 * cookies shorter than the declared name.
7223 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7224 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7225 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7226 (val_end - att_beg >= t->fe->capture_namelen) &&
7227 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7228 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7229 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7230 Alert("HTTP logging : out of memory.\n");
7231 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7232 else {
7233 if (log_len > t->fe->capture_len)
7234 log_len = t->fe->capture_len;
7235 memcpy(txn->srv_cookie, att_beg, log_len);
7236 txn->srv_cookie[log_len] = 0;
7237 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7238 }
7239
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7240 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7241 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7242 if (!(t->flags & SN_IGNORE_PRST) &&
7243 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7244 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7245 /* assume passive cookie by default */
7246 txn->flags &= ~TX_SCK_MASK;
7247 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7248
7249 /* If the cookie is in insert mode on a known server, we'll delete
7250 * this occurrence because we'll insert another one later.
7251 * 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]7252 * a direct access.
7253 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7254 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7255 /* The "preserve" flag was set, we don't want to touch the
7256 * server's cookie.
7257 */
7258 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7259 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7260 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7261 /* this cookie must be deleted */
7262 if (*prev == ':' && next == hdr_end) {
7263 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7264 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7265 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7266 txn->hdr_idx.used--;
7267 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7268 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7269 hdr_next += delta;
7270 http_msg_move_end(&txn->rsp, delta);
7271 /* note: while both invalid now, <next> and <hdr_end>
7272 * are still equal, so the for() will stop as expected.
7273 */
7274 } else {
7275 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7276 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7277 next = prev;
7278 hdr_end += delta;
7279 hdr_next += delta;
7280 cur_hdr->len += delta;
7281 http_msg_move_end(&txn->rsp, delta);
7282 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7283 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7284 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7285 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7286 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7287 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7288 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7289 * with this server since we know it.
7290 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7291 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7292 next += delta;
7293 hdr_end += delta;
7294 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7295 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7296 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7297
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7298 txn->flags &= ~TX_SCK_MASK;
7299 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7300 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7301 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7302 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7303 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7304 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7305 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7306 next += delta;
7307 hdr_end += delta;
7308 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7309 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7310 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7311
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7312 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7313 txn->flags &= ~TX_SCK_MASK;
7314 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7315 }
7316 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7317 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7318 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7319 int cmp_len, value_len;
7320 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7321
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7322 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7323 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7324 value_begin = att_beg + t->be->appsession_name_len;
7325 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]7326 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7327 cmp_len = att_end - att_beg;
7328 value_begin = val_beg;
7329 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7330 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7331
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7332 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7333 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7334 /* free a possibly previously allocated memory */
7335 pool_free2(apools.sessid, txn->sessid);
7336
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7337 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7338 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7339 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7340 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7341 return;
7342 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7343 memcpy(txn->sessid, value_begin, value_len);
7344 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7345 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7346 }
7347 /* that's done for this cookie, check the next one on the same
7348 * line when next != hdr_end (only if is_cookie2).
7349 */
7350 }
7351 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7352 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7353 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7354
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7355 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7356 appsess *asession = NULL;
7357 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7358 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7359 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7360 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7361 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7362 Alert("Not enough Memory process_srv():asession:calloc().\n");
7363 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7364 return;
7365 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7366 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7367
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7368 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7369 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7370 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]7371 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7372 return;
7373 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7374 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7375 asession->sessid[t->be->appsession_len] = 0;
7376
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7377 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7378 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7379 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7380 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]7381 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7382 return;
7383 }
7384 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7385 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7386
7387 asession->request_count = 0;
7388 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7389 }
7390
7391 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7392 asession->request_count++;
7393 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7394}
7395
7396
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7397/*
7398 * Check if response is cacheable or not. Updates t->flags.
7399 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7400void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7401{
7402 struct http_txn *txn = &t->txn;
7403 char *p1, *p2;
7404
7405 char *cur_ptr, *cur_end, *cur_next;
7406 int cur_idx;
7407
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7408 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7409 return;
7410
7411 /* Iterate through the headers.
7412 * we start with the start line.
7413 */
7414 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7415 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7416
7417 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7418 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7419 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7420
7421 cur_hdr = &txn->hdr_idx.v[cur_idx];
7422 cur_ptr = cur_next;
7423 cur_end = cur_ptr + cur_hdr->len;
7424 cur_next = cur_end + cur_hdr->cr + 1;
7425
7426 /* We have one full header between cur_ptr and cur_end, and the
7427 * next header starts at cur_next. We're only interested in
7428 * "Cookie:" headers.
7429 */
7430
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7431 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7432 if (val) {
7433 if ((cur_end - (cur_ptr + val) >= 8) &&
7434 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7435 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7436 return;
7437 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7438 }
7439
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7440 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7441 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7442 continue;
7443
7444 /* OK, right now we know we have a cache-control header at cur_ptr */
7445
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7446 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7447
7448 if (p1 >= cur_end) /* no more info */
7449 continue;
7450
7451 /* p1 is at the beginning of the value */
7452 p2 = p1;
7453
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7454 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7455 p2++;
7456
7457 /* we have a complete value between p1 and p2 */
7458 if (p2 < cur_end && *p2 == '=') {
7459 /* we have something of the form no-cache="set-cookie" */
7460 if ((cur_end - p1 >= 21) &&
7461 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7462 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7463 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7464 continue;
7465 }
7466
7467 /* OK, so we know that either p2 points to the end of string or to a comma */
7468 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7469 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7470 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7471 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7472 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7473 return;
7474 }
7475
7476 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7477 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7478 continue;
7479 }
7480 }
7481}
7482
7483
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7484/*
7485 * Try to retrieve a known appsession in the URI, then the associated server.
7486 * If the server is found, it's assigned to the session.
7487 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7488void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7489{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7490 char *end_params, *first_param, *cur_param, *next_param;
7491 char separator;
7492 int value_len;
7493
7494 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7495
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7496 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7497 (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]7498 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7499 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7500
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7501 first_param = NULL;
7502 switch (mode) {
7503 case PR_O2_AS_M_PP:
7504 first_param = memchr(begin, ';', len);
7505 break;
7506 case PR_O2_AS_M_QS:
7507 first_param = memchr(begin, '?', len);
7508 break;
7509 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7510
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7511 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7512 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7513 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7514
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7515 switch (mode) {
7516 case PR_O2_AS_M_PP:
7517 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7518 end_params = (char *) begin + len;
7519 }
7520 separator = ';';
7521 break;
7522 case PR_O2_AS_M_QS:
7523 end_params = (char *) begin + len;
7524 separator = '&';
7525 break;
7526 default:
7527 /* unknown mode, shouldn't happen */
7528 return;
7529 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7530
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7531 cur_param = next_param = end_params;
7532 while (cur_param > first_param) {
7533 cur_param--;
7534 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7535 /* let's see if this is the appsession parameter */
7536 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7537 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7538 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7539 /* Cool... it's the right one */
7540 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7541 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7542 if (value_len > 0) {
7543 manage_client_side_appsession(t, cur_param, value_len);
7544 }
7545 break;
7546 }
7547 next_param = cur_param;
7548 }
7549 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7550#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7551 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7552 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7553#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7554}
7555
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7556/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7557 * 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]7558 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7559 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7560 * 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]7561 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7562 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7563 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7564 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7565int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7566{
7567 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7568 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7569 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7570 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7571
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7572 if (!uri_auth)
7573 return 0;
7574
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7575 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]7576 return 0;
7577
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7578 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7579 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7581 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7582 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7583 return 0;
7584
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7585 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7586 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7587 return 0;
7588
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7589 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7590 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7591 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7592 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7593 break;
7594 }
7595 h++;
7596 }
7597
7598 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7599 h = uri + uri_auth->uri_len;
7600 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7601 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7602 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7603 break;
7604 }
7605 h++;
7606 }
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 - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7611 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7612 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7613 break;
7614 }
7615 h++;
7616 }
7617
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7618 h = uri + uri_auth->uri_len;
7619 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7620 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7621 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7622 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7623 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7624 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7625 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7626 si->applet.ctx.stats.st_code = i;
7627 break;
7628 }
7629 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7630 break;
7631 }
7632 h++;
7633 }
7634
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7635 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7636
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7637 return 1;
7638}
7639
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7640/*
7641 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7642 * By default it tries to report the error position as msg->err_pos. However if
7643 * this one is not set, it will then report msg->next, which is the last known
7644 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7645 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7646 */
7647void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7648 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7649 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7650{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7651 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7652 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7653
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7654 es->len = MIN(chn->buf->i, sizeof(es->buf));
7655 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7656 len1 = MIN(len1, es->len);
7657 len2 = es->len - len1; /* remaining data if buffer wraps */
7658
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7659 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7660 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7661 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7662
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7663 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7664 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7665 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7666 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7667
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7668 es->when = date; // user-visible date
7669 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7670 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7671 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7672 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7673 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7674 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7675 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7676 es->s_flags = s->flags;
7677 es->t_flags = s->txn.flags;
7678 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7679 es->b_out = chn->buf->o;
7680 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7681 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7682 es->m_clen = msg->chunk_len;
7683 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7684}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7685
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7686/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7687 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7688 * performed over the whole headers. Otherwise it must contain a valid header
7689 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7690 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7691 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7692 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7693 * -1.
7694 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7695 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7696unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7697 struct hdr_idx *idx, int occ,
7698 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7699{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7700 struct hdr_ctx local_ctx;
7701 char *ptr_hist[MAX_HDR_HISTORY];
7702 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7703 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7704 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7705
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7706 if (!ctx) {
7707 local_ctx.idx = 0;
7708 ctx = &local_ctx;
7709 }
7710
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7711 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7712 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7713 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7714 occ--;
7715 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7716 *vptr = ctx->line + ctx->val;
7717 *vlen = ctx->vlen;
7718 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7719 }
7720 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7721 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7722 }
7723
7724 /* negative occurrence, we scan all the list then walk back */
7725 if (-occ > MAX_HDR_HISTORY)
7726 return 0;
7727
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7728 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7729 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7730 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7731 len_hist[hist_ptr] = ctx->vlen;
7732 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7733 hist_ptr = 0;
7734 found++;
7735 }
7736 if (-occ > found)
7737 return 0;
7738 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7739 * find occurrence -occ, so we have to check [hist_ptr+occ].
7740 */
7741 hist_ptr += occ;
7742 if (hist_ptr >= MAX_HDR_HISTORY)
7743 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7744 *vptr = ptr_hist[hist_ptr];
7745 *vlen = len_hist[hist_ptr];
7746 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7747}
7748
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7749/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7750 * Print a debug line with a header. Always stop at the first CR or LF char,
7751 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7752 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7753 */
7754void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7755{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7756 int max;
7757 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7758 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7759 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7760
7761 for (max = 0; start + max < end; max++)
7762 if (start[max] == '\r' || start[max] == '\n')
7763 break;
7764
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7765 UBOUND(max, trash.size - trash.len - 3);
7766 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7767 trash.str[trash.len++] = '\n';
7768 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7769}
7770
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7771/*
7772 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7773 * the required fields are properly allocated and that we only need to (re)init
7774 * them. This should be used before processing any new request.
7775 */
7776void http_init_txn(struct session *s)
7777{
7778 struct http_txn *txn = &s->txn;
7779 struct proxy *fe = s->fe;
7780
7781 txn->flags = 0;
7782 txn->status = -1;
7783
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7784 global.req_count++;
7785
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7786 txn->cookie_first_date = 0;
7787 txn->cookie_last_date = 0;
7788
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7789 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7790 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7791 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7792 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7793 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7794 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7795 txn->req.chunk_len = 0LL;
7796 txn->req.body_len = 0LL;
7797 txn->rsp.chunk_len = 0LL;
7798 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7799 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7800 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7801 txn->req.chn = s->req;
7802 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7803
7804 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7805
7806 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7807 if (fe->options2 & PR_O2_REQBUG_OK)
7808 txn->req.err_pos = -1; /* let buggy requests pass */
7809
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7810 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7811 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7812
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7813 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7814 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7815
7816 if (txn->hdr_idx.v)
7817 hdr_idx_init(&txn->hdr_idx);
7818}
7819
7820/* to be used at the end of a transaction */
7821void http_end_txn(struct session *s)
7822{
7823 struct http_txn *txn = &s->txn;
7824
7825 /* these ones will have been dynamically allocated */
7826 pool_free2(pool2_requri, txn->uri);
7827 pool_free2(pool2_capture, txn->cli_cookie);
7828 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7829 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7830 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7831
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7832 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7833 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7834 txn->uri = NULL;
7835 txn->srv_cookie = NULL;
7836 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7837
7838 if (txn->req.cap) {
7839 struct cap_hdr *h;
7840 for (h = s->fe->req_cap; h; h = h->next)
7841 pool_free2(h->pool, txn->req.cap[h->index]);
7842 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7843 }
7844
7845 if (txn->rsp.cap) {
7846 struct cap_hdr *h;
7847 for (h = s->fe->rsp_cap; h; h = h->next)
7848 pool_free2(h->pool, txn->rsp.cap[h->index]);
7849 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7850 }
7851
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7852}
7853
7854/* to be used at the end of a transaction to prepare a new one */
7855void http_reset_txn(struct session *s)
7856{
7857 http_end_txn(s);
7858 http_init_txn(s);
7859
7860 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7861 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7862 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7863 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7864 /* re-init store persistence */
7865 s->store_count = 0;
7866
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7867 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7868
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7869 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7870
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7871 /* We must trim any excess data from the response buffer, because we
7872 * may have blocked an invalid response from a server that we don't
7873 * want to accidentely forward once we disable the analysers, nor do
7874 * we want those data to come along with next response. A typical
7875 * example of such data would be from a buggy server responding to
7876 * a HEAD with some data, or sending more than the advertised
7877 * content-length.
7878 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7879 if (unlikely(s->rep->buf->i))
7880 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7881
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7882 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7883 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7884
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7885 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7886 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7887
7888 s->req->rex = TICK_ETERNITY;
7889 s->req->wex = TICK_ETERNITY;
7890 s->req->analyse_exp = TICK_ETERNITY;
7891 s->rep->rex = TICK_ETERNITY;
7892 s->rep->wex = TICK_ETERNITY;
7893 s->rep->analyse_exp = TICK_ETERNITY;
7894}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7895
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7896void free_http_req_rules(struct list *r) {
7897 struct http_req_rule *tr, *pr;
7898
7899 list_for_each_entry_safe(pr, tr, r, list) {
7900 LIST_DEL(&pr->list);
7901 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7902 free(pr->http_auth.realm);
7903
7904 free(pr);
7905 }
7906}
7907
7908struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7909{
7910 struct http_req_rule *rule;
7911 int cur_arg;
7912
7913 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7914 if (!rule) {
7915 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7916 return NULL;
7917 }
7918
7919 if (!*args[0]) {
7920 goto req_error_parsing;
7921 } else if (!strcmp(args[0], "allow")) {
7922 rule->action = HTTP_REQ_ACT_ALLOW;
7923 cur_arg = 1;
7924 } else if (!strcmp(args[0], "deny")) {
7925 rule->action = HTTP_REQ_ACT_DENY;
7926 cur_arg = 1;
7927 } else if (!strcmp(args[0], "auth")) {
7928 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7929 cur_arg = 1;
7930
7931 while(*args[cur_arg]) {
7932 if (!strcmp(args[cur_arg], "realm")) {
7933 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7934 cur_arg+=2;
7935 continue;
7936 } else
7937 break;
7938 }
7939 } else {
7940req_error_parsing:
7941 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7942 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7943 return NULL;
7944 }
7945
7946 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7947 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7948 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7949
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7950 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7951 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7952 file, linenum, args[0], errmsg);
7953 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7954 return NULL;
7955 }
7956 rule->cond = cond;
7957 }
7958 else if (*args[cur_arg]) {
7959 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7960 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7961 file, linenum, args[0], args[cur_arg]);
7962 return NULL;
7963 }
7964
7965 return rule;
7966}
7967
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7968/************************************************************************/
7969/* The code below is dedicated to ACL parsing and matching */
7970/************************************************************************/
7971
7972
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7973/* This function ensures that the prerequisites for an L7 fetch are ready,
7974 * which means that a request or response is ready. If some data is missing,
7975 * 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]7976 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7977 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7978 *
7979 * The function returns :
7980 * 0 if some data is missing or if the requested data cannot be fetched
7981 * -1 if it is certain that we'll never have any HTTP message there
7982 * 1 if an HTTP message is ready
7983 */
7984static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7985acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7986 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7987{
7988 struct http_txn *txn = l7;
7989 struct http_msg *msg = &txn->req;
7990
7991 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7992 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7993 */
7994
7995 if (unlikely(!s || !txn))
7996 return 0;
7997
7998 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7999 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8000
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8001 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8002 if (unlikely(!s->req))
8003 return 0;
8004
8005 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8006 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8007 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8008 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8009 return -1;
8010 }
8011
8012 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8013 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8014 http_msg_analyzer(msg, &txn->hdr_idx);
8015
8016 /* Still no valid request ? */
8017 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8018 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8019 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8020 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8021 return -1;
8022 }
8023 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8024 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8025 return 0;
8026 }
8027
8028 /* OK we just got a valid HTTP request. We have some minor
8029 * preparation to perform so that further checks can rely
8030 * on HTTP tests.
8031 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8032 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8033 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8034 s->flags |= SN_REDIRECTABLE;
8035
8036 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8037 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8038 return -1;
8039 }
8040 }
8041
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8042 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8043 return 0; /* data might have moved and indexes changed */
8044
8045 /* otherwise everything's ready for the request */
8046 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8047 else {
8048 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8049 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8050 return 0;
8051 }
8052
8053 /* everything's OK */
8054 return 1;
8055}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8056
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8057#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8058 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]8059
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8060#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8061 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]8062
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8063
8064/* 1. Check on METHOD
8065 * We use the pre-parsed method if it is known, and store its number as an
8066 * integer. If it is unknown, we use the pointer and the length.
8067 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8068static 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]8069{
8070 int len, meth;
8071
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8072 len = strlen(*text);
8073 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8074
8075 pattern->val.i = meth;
8076 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8077 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8078 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8079 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8080 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8081 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8082 pattern->len = len;
8083 }
8084 return 1;
8085}
8086
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8087/* This function fetches the method of current HTTP request and stores
8088 * it in the global pattern struct as a chunk. There are two possibilities :
8089 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8090 * in <len> and <ptr> is NULL ;
8091 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8092 * <len> to its length.
8093 * This is intended to be used with acl_match_meth() only.
8094 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8095static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8096acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8097 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8098{
8099 int meth;
8100 struct http_txn *txn = l7;
8101
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8102 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8103
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8104 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8105 smp->type = SMP_T_UINT;
8106 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8107 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8108 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8109 /* ensure the indexes are not affected */
8110 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8111 smp->type = SMP_T_CSTR;
8112 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8113 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8114 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8115 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8116 return 1;
8117}
8118
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8119/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8120static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8121{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8122 int icase;
8123
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8124
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8125 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8126 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8127 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8128 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8129 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8130 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8131
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8132 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8133 if (pattern->val.i != HTTP_METH_OTHER)
8134 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8135
8136 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8137 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8138 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8139
8140 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8141 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8142 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8143 return ACL_PAT_FAIL;
8144 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8145}
8146
8147/* 2. Check on Request/Status Version
8148 * We simply compare strings here.
8149 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8150static 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]8151{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8152 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8153 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8154 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8155 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8156 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8157 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8158 return 1;
8159}
8160
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8161static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8162acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8163 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8164{
8165 struct http_txn *txn = l7;
8166 char *ptr;
8167 int len;
8168
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8169 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8170
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8171 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8172 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8173
8174 while ((len-- > 0) && (*ptr++ != '/'));
8175 if (len <= 0)
8176 return 0;
8177
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8178 smp->type = SMP_T_CSTR;
8179 smp->data.str.str = ptr;
8180 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8181
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8182 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8183 return 1;
8184}
8185
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8186static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8187acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8188 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8189{
8190 struct http_txn *txn = l7;
8191 char *ptr;
8192 int len;
8193
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8194 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8195
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8196 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8197 return 0;
8198
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8199 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8200 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8201
8202 while ((len-- > 0) && (*ptr++ != '/'));
8203 if (len <= 0)
8204 return 0;
8205
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8206 smp->type = SMP_T_CSTR;
8207 smp->data.str.str = ptr;
8208 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8209
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8210 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8211 return 1;
8212}
8213
8214/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8215static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8216acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8217 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8218{
8219 struct http_txn *txn = l7;
8220 char *ptr;
8221 int len;
8222
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8223 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8224
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8225 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8226 return 0;
8227
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8228 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8229 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8230
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8231 smp->type = SMP_T_UINT;
8232 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8233 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8234 return 1;
8235}
8236
8237/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8238static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8239smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8240 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[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();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8245
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8246 smp->type = SMP_T_CSTR;
8247 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8248 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8249 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8250 return 1;
8251}
8252
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8253static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8254smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8255 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8256{
8257 struct http_txn *txn = l7;
8258
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8259 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8260
8261 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8262 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8263 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8264 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8265 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8266 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8267
8268 /*
8269 * If we are parsing url in frontend space, we prepare backend stage
8270 * to not parse again the same url ! optimization lazyness...
8271 */
8272 if (px->options & PR_O_HTTP_PROXY)
8273 l4->flags |= SN_ADDR_SET;
8274
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8275 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8276 return 1;
8277}
8278
8279static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8280smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8281 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8282{
8283 struct http_txn *txn = l7;
8284
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8285 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8286
8287 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8288 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]8289 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8290 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]8291
8292 if (px->options & PR_O_HTTP_PROXY)
8293 l4->flags |= SN_ADDR_SET;
8294
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8295 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8296 return 1;
8297}
8298
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8299/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8300 * Accepts an optional argument of type string containing the header field name,
8301 * and an optional argument of type signed or unsigned integer to request an
8302 * explicit occurrence of the header. Note that in the event of a missing name,
8303 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8304 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8305static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8306smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8307 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8308{
8309 struct http_txn *txn = l7;
8310 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8311 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8312 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]8313 int occ = 0;
8314 const char *name_str = NULL;
8315 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8316
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8317 if (args) {
8318 if (args[0].type != ARGT_STR)
8319 return 0;
8320 name_str = args[0].data.str.str;
8321 name_len = args[0].data.str.len;
8322
8323 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8324 occ = args[1].data.uint;
8325 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8326
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8327 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8328
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8329 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8330 /* search for header from the beginning */
8331 ctx->idx = 0;
8332
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8333 if (!occ && !(opt & SMP_OPT_ITERATE))
8334 /* no explicit occurrence and single fetch => last header by default */
8335 occ = -1;
8336
8337 if (!occ)
8338 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8339 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8340
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8341 smp->type = SMP_T_CSTR;
8342 smp->flags |= SMP_F_VOL_HDR;
8343 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]8344 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8345
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8346 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8347 return 0;
8348}
8349
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8350/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8351 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8352 */
8353static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8354smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8355 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8356{
8357 struct http_txn *txn = l7;
8358 struct hdr_idx *idx = &txn->hdr_idx;
8359 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8360 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]8361 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8362
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8363 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8364 return 0;
8365
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8366 CHECK_HTTP_MESSAGE_FIRST();
8367
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8368 ctx.idx = 0;
8369 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8370 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]8371 cnt++;
8372
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8373 smp->type = SMP_T_UINT;
8374 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8375 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8376 return 1;
8377}
8378
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8379/* Fetch an HTTP header's integer value. The integer value is returned. It
8380 * takes a mandatory argument of type string and an optional one of type int
8381 * to designate a specific occurrence. It returns an unsigned integer, which
8382 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8383 */
8384static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8385smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8386 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8387{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8388 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8389
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8390 if (ret > 0) {
8391 smp->type = SMP_T_UINT;
8392 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8393 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8394
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8395 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8396}
8397
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8398/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8399 * and an optional one of type int to designate a specific occurrence.
8400 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8401 */
8402static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8403smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8404 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8405{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8406 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8407
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8408 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8409 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8410 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8411 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8412 } else {
8413 struct chunk *temp = sample_get_trash_chunk();
8414 if (smp->data.str.len < temp->size - 1) {
8415 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8416 temp->str[smp->data.str.len] = '\0';
8417 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8418 smp->type = SMP_T_IPV6;
8419 break;
8420 }
8421 }
8422 }
8423
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8424 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8425 if (!(smp->flags & SMP_F_NOT_LAST))
8426 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8427 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8428 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8429}
8430
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8431/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8432 * the first '/' after the possible hostname, and ends before the possible '?'.
8433 */
8434static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8435smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8436 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8437{
8438 struct http_txn *txn = l7;
8439 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8440
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8441 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8442
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8443 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]8444 ptr = http_get_path(txn);
8445 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8446 return 0;
8447
8448 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8449 smp->type = SMP_T_CSTR;
8450 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8451
8452 while (ptr < end && *ptr != '?')
8453 ptr++;
8454
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8455 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8456 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8457 return 1;
8458}
8459
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8460/* This produces a concatenation of the first occurrence of the Host header
8461 * followed by the path component if it begins with a slash ('/'). This means
8462 * that '*' will not be added, resulting in exactly the first Host entry.
8463 * If no Host header is found, then the path is returned as-is. The returned
8464 * value is stored in the trash so it does not need to be marked constant.
8465 */
8466static int
8467smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8468 const struct arg *args, struct sample *smp)
8469{
8470 struct http_txn *txn = l7;
8471 char *ptr, *end, *beg;
8472 struct hdr_ctx ctx;
8473
8474 CHECK_HTTP_MESSAGE_FIRST();
8475
8476 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8477 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]8478 !ctx.vlen)
8479 return smp_fetch_path(px, l4, l7, opt, args, smp);
8480
8481 /* 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]8482 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8483 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8484 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8485 smp->data.str.len = ctx.vlen;
8486
8487 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8488 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]8489 beg = http_get_path(txn);
8490 if (!beg)
8491 beg = end;
8492
8493 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8494
8495 if (beg < ptr && *beg == '/') {
8496 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8497 smp->data.str.len += ptr - beg;
8498 }
8499
8500 smp->flags = SMP_F_VOL_1ST;
8501 return 1;
8502}
8503
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]8504/* This produces a 32-bit hash of the concatenation of the first occurrence of
8505 * the Host header followed by the path component if it begins with a slash ('/').
8506 * This means that '*' will not be added, resulting in exactly the first Host
8507 * entry. If no Host header is found, then the path is used. The resulting value
8508 * is hashed using the url hash followed by a full avalanche hash and provides a
8509 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
8510 * high-traffic sites without having to store whole paths.
8511 */
8512static int
8513smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8514 const struct arg *args, struct sample *smp)
8515{
8516 struct http_txn *txn = l7;
8517 struct hdr_ctx ctx;
8518 unsigned int hash = 0;
8519 char *ptr, *beg, *end;
8520 int len;
8521
8522 CHECK_HTTP_MESSAGE_FIRST();
8523
8524 ctx.idx = 0;
8525 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
8526 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8527 ptr = ctx.line + ctx.val;
8528 len = ctx.vlen;
8529 while (len--)
8530 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
8531 }
8532
8533 /* now retrieve the path */
8534 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
8535 beg = http_get_path(txn);
8536 if (!beg)
8537 beg = end;
8538
8539 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8540
8541 if (beg < ptr && *beg == '/') {
8542 while (beg < ptr)
8543 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
8544 }
8545 hash = full_hash(hash);
8546
8547 smp->type = SMP_T_UINT;
8548 smp->data.uint = hash;
8549 smp->flags = SMP_F_VOL_1ST;
8550 return 1;
8551}
8552
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8553/* This concatenates the source address with the 32-bit hash of the Host and
8554 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
8555 * per-url counters. The result is a binary block from 8 to 20 bytes depending
8556 * on the source address length. The URL hash is stored before the address so
8557 * that in environments where IPv6 is insignificant, truncating the output to
8558 * 8 bytes would still work.
8559 */
8560static int
8561smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8562 const struct arg *args, struct sample *smp)
8563{
8564 struct chunk *temp = sample_get_trash_chunk();
8565
8566 if (!smp_fetch_base32(px, l4, l7, opt, args, smp))
8567 return 0;
8568
8569 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
8570 temp->len += sizeof(smp->data.uint);
8571
8572 switch (l4->si[0].conn->addr.from.ss_family) {
8573 case AF_INET:
8574 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
8575 temp->len += 4;
8576 break;
8577 case AF_INET6:
8578 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
8579 temp->len += 16;
8580 break;
8581 default:
8582 return 0;
8583 }
8584
8585 smp->data.str = *temp;
8586 smp->type = SMP_T_BIN;
8587 return 1;
8588}
8589
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8590static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8591acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8592 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8593{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8594 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8595 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8596 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8597
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8598 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8599
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8600 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8601 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8602 return 1;
8603}
8604
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8605/* return a valid test if the current request is the first one on the connection */
8606static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8607acl_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]8608 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8609{
8610 if (!s)
8611 return 0;
8612
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8613 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8614 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8615 return 1;
8616}
8617
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8618/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8619static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8620acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8621 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8622{
8623
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8624 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8625 return 0;
8626
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8627 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8628
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8629 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8630 return 0;
8631
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8632 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8633 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]8634 return 1;
8635}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8636
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8637/* Accepts exactly 1 argument of type userlist */
8638static int
8639acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8640 const struct arg *args, struct sample *smp)
8641{
8642
8643 if (!args || args->type != ARGT_USR)
8644 return 0;
8645
8646 CHECK_HTTP_MESSAGE_FIRST();
8647
8648 if (!get_http_auth(l4))
8649 return 0;
8650
8651 /* acl_match_auth() will need several information at once */
8652 smp->ctx.a[0] = args->data.usr; /* user list */
8653 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8654 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8655
8656 /* if the user does not belong to the userlist or has a wrong password,
8657 * report that it unconditionally does not match. Otherwise we return
8658 * a non-zero integer which will be ignored anyway since all the params
8659 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8660 */
8661 smp->type = SMP_T_BOOL;
8662 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8663 if (smp->data.uint)
8664 smp->type = SMP_T_UINT;
8665
8666 return 1;
8667}
8668
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8669/* Try to find the next occurrence of a cookie name in a cookie header value.
8670 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8671 * the cookie value is returned into *value and *value_l, and the function
8672 * returns a pointer to the next pointer to search from if the value was found.
8673 * Otherwise if the cookie was not found, NULL is returned and neither value
8674 * nor value_l are touched. The input <hdr> string should first point to the
8675 * header's value, and the <hdr_end> pointer must point to the first character
8676 * not part of the value. <list> must be non-zero if value may represent a list
8677 * of values (cookie headers). This makes it faster to abort parsing when no
8678 * list is expected.
8679 */
8680static char *
8681extract_cookie_value(char *hdr, const char *hdr_end,
8682 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8683 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8684{
8685 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8686 char *next;
8687
8688 /* we search at least a cookie name followed by an equal, and more
8689 * generally something like this :
8690 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8691 */
8692 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8693 /* Iterate through all cookies on this line */
8694
8695 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8696 att_beg++;
8697
8698 /* find att_end : this is the first character after the last non
8699 * space before the equal. It may be equal to hdr_end.
8700 */
8701 equal = att_end = att_beg;
8702
8703 while (equal < hdr_end) {
8704 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8705 break;
8706 if (http_is_spht[(unsigned char)*equal++])
8707 continue;
8708 att_end = equal;
8709 }
8710
8711 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8712 * is between <att_beg> and <equal>, both may be identical.
8713 */
8714
8715 /* look for end of cookie if there is an equal sign */
8716 if (equal < hdr_end && *equal == '=') {
8717 /* look for the beginning of the value */
8718 val_beg = equal + 1;
8719 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8720 val_beg++;
8721
8722 /* find the end of the value, respecting quotes */
8723 next = find_cookie_value_end(val_beg, hdr_end);
8724
8725 /* make val_end point to the first white space or delimitor after the value */
8726 val_end = next;
8727 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8728 val_end--;
8729 } else {
8730 val_beg = val_end = next = equal;
8731 }
8732
8733 /* We have nothing to do with attributes beginning with '$'. However,
8734 * they will automatically be removed if a header before them is removed,
8735 * since they're supposed to be linked together.
8736 */
8737 if (*att_beg == '$')
8738 continue;
8739
8740 /* Ignore cookies with no equal sign */
8741 if (equal == next)
8742 continue;
8743
8744 /* Now we have the cookie name between att_beg and att_end, and
8745 * its value between val_beg and val_end.
8746 */
8747
8748 if (att_end - att_beg == cookie_name_l &&
8749 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8750 /* let's return this value and indicate where to go on from */
8751 *value = val_beg;
8752 *value_l = val_end - val_beg;
8753 return next + 1;
8754 }
8755
8756 /* Set-Cookie headers only have the name in the first attr=value part */
8757 if (!list)
8758 break;
8759 }
8760
8761 return NULL;
8762}
8763
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8764/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8765 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8766 * 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]8767 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8768 * 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]8769 * Accepts exactly 1 argument of type string. If the input options indicate
8770 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8771 */
8772static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8773smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8774 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8775{
8776 struct http_txn *txn = l7;
8777 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8778 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8779 const struct http_msg *msg;
8780 const char *hdr_name;
8781 int hdr_name_len;
8782 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8783 int occ = 0;
8784 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8785
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8786 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8787 return 0;
8788
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8789 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8790
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8791 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8792 msg = &txn->req;
8793 hdr_name = "Cookie";
8794 hdr_name_len = 6;
8795 } else {
8796 msg = &txn->rsp;
8797 hdr_name = "Set-Cookie";
8798 hdr_name_len = 10;
8799 }
8800
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8801 if (!occ && !(opt & SMP_OPT_ITERATE))
8802 /* no explicit occurrence and single fetch => last cookie by default */
8803 occ = -1;
8804
8805 /* OK so basically here, either we want only one value and it's the
8806 * last one, or we want to iterate over all of them and we fetch the
8807 * next one.
8808 */
8809
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8810 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8811 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8812 /* search for the header from the beginning, we must first initialize
8813 * the search parameters.
8814 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8815 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8816 ctx->idx = 0;
8817 }
8818
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8819 smp->flags |= SMP_F_VOL_HDR;
8820
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8821 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8822 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8823 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8824 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8825 goto out;
8826
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8827 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8828 continue;
8829
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8830 smp->ctx.a[0] = ctx->line + ctx->val;
8831 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8832 }
8833
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8834 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8835 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]8836 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8837 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8838 &smp->data.str.str,
8839 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8840 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8841 found = 1;
8842 if (occ >= 0) {
8843 /* one value was returned into smp->data.str.{str,len} */
8844 smp->flags |= SMP_F_NOT_LAST;
8845 return 1;
8846 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8847 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8848 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8849 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8850 /* all cookie headers and values were scanned. If we're looking for the
8851 * last occurrence, we may return it now.
8852 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8853 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8854 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8855 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8856}
8857
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8858/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8859 * 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]8860 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8861 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8862 */
8863static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8864acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8865 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8866{
8867 struct http_txn *txn = l7;
8868 struct hdr_idx *idx = &txn->hdr_idx;
8869 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8870 const struct http_msg *msg;
8871 const char *hdr_name;
8872 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8873 int cnt;
8874 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8875 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8876
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8877 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8878 return 0;
8879
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8880 CHECK_HTTP_MESSAGE_FIRST();
8881
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8882 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8883 msg = &txn->req;
8884 hdr_name = "Cookie";
8885 hdr_name_len = 6;
8886 } else {
8887 msg = &txn->rsp;
8888 hdr_name = "Set-Cookie";
8889 hdr_name_len = 10;
8890 }
8891
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8892 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8893 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8894 ctx.idx = 0;
8895 cnt = 0;
8896
8897 while (1) {
8898 /* Note: val_beg == NULL every time we need to fetch a new header */
8899 if (!val_beg) {
8900 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8901 break;
8902
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8903 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8904 continue;
8905
8906 val_beg = ctx.line + ctx.val;
8907 val_end = val_beg + ctx.vlen;
8908 }
8909
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8910 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8911 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8912 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8913 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8914 &smp->data.str.str,
8915 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8916 cnt++;
8917 }
8918 }
8919
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8920 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8921 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8922 return 1;
8923}
8924
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8925/* Fetch an cookie's integer value. The integer value is returned. It
8926 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8927 */
8928static int
8929smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8930 const struct arg *args, struct sample *smp)
8931{
8932 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8933
8934 if (ret > 0) {
8935 smp->type = SMP_T_UINT;
8936 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8937 }
8938
8939 return ret;
8940}
8941
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8942/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8943/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8944/************************************************************************/
8945
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8946/*
8947 * Given a path string and its length, find the position of beginning of the
8948 * query string. Returns NULL if no query string is found in the path.
8949 *
8950 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8951 *
8952 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8953 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8954static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8955{
8956 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8957
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8958 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8959 return p ? p + 1 : NULL;
8960}
8961
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8962static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8963{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8964 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8965}
8966
8967/*
8968 * Given a url parameter, find the starting position of the first occurence,
8969 * or NULL if the parameter is not found.
8970 *
8971 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8972 * the function will return query_string+8.
8973 */
8974static char*
8975find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8976 char* url_param_name, size_t url_param_name_l,
8977 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8978{
8979 char *pos, *last;
8980
8981 pos = query_string;
8982 last = query_string + query_string_l - url_param_name_l - 1;
8983
8984 while (pos <= last) {
8985 if (pos[url_param_name_l] == '=') {
8986 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8987 return pos;
8988 pos += url_param_name_l + 1;
8989 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8990 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8991 pos++;
8992 pos++;
8993 }
8994 return NULL;
8995}
8996
8997/*
8998 * Given a url parameter name, returns its value and size into *value and
8999 * *value_l respectively, and returns non-zero. If the parameter is not found,
9000 * zero is returned and value/value_l are not touched.
9001 */
9002static int
9003find_url_param_value(char* path, size_t path_l,
9004 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9005 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9006{
9007 char *query_string, *qs_end;
9008 char *arg_start;
9009 char *value_start, *value_end;
9010
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9011 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9012 if (!query_string)
9013 return 0;
9014
9015 qs_end = path + path_l;
9016 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9017 url_param_name, url_param_name_l,
9018 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9019 if (!arg_start)
9020 return 0;
9021
9022 value_start = arg_start + url_param_name_l + 1;
9023 value_end = value_start;
9024
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9025 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9026 value_end++;
9027
9028 *value = value_start;
9029 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9030 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9031}
9032
9033static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9034smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9035 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9036{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9037 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9038 struct http_txn *txn = l7;
9039 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9040
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9041 if (!args || args[0].type != ARGT_STR ||
9042 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9043 return 0;
9044
9045 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9046
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9047 if (args[1].type)
9048 delim = *args[1].data.str.str;
9049
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9050 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]9051 args->data.str.str, args->data.str.len,
9052 &smp->data.str.str, &smp->data.str.len,
9053 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9054 return 0;
9055
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9056 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9057 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9058 return 1;
9059}
9060
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9061/* Return the signed integer value for the specified url parameter (see url_param
9062 * above).
9063 */
9064static int
9065smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9066 const struct arg *args, struct sample *smp)
9067{
9068 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
9069
9070 if (ret > 0) {
9071 smp->type = SMP_T_UINT;
9072 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9073 }
9074
9075 return ret;
9076}
9077
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9078/* This function is used to validate the arguments passed to any "hdr" fetch
9079 * keyword. These keywords support an optional positive or negative occurrence
9080 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9081 * is assumed that the types are already the correct ones. Returns 0 on error,
9082 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9083 * error message in case of error, that the caller is responsible for freeing.
9084 * The initial location must either be freeable or NULL.
9085 */
9086static int val_hdr(struct arg *arg, char **err_msg)
9087{
9088 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9089 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9090 return 0;
9091 }
9092 return 1;
9093}
9094
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9095/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9096/* All supported ACL keywords must be declared here. */
9097/************************************************************************/
9098
9099/* Note: must not be declared <const> as its list will be overwritten.
9100 * Please take care of keeping this list alphabetically sorted.
9101 */
9102static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9103 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9104 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9105 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9106 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9107 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9108 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9109 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9110 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
9111
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9112 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9113 { "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]9114 { "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]9115 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9116 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9117 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9118 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9119 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9120 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9121 { "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]9122
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9123 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9124 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9125 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9126 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9127 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9128 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9129 { "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 },
9130 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9131 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9132 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9133 { "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]9134
9135 { "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]9136 { "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]9137 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9138
9139 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
9140
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9141 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9142 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9143 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9144 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9145 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9146 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9147 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9148 { "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]9149
9150 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9151 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9152 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
9153
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9154 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9155 { "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]9156 { "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]9157 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9158 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9159 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9160 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9161 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9162 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9163 { "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]9164
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9165 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9166 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9167 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9168 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9169 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9170 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9171 { "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 },
9172 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9173 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9174 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9175 { "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]9176
9177 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9178
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9179 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9180 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9181 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9182 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9183 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9184 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9185 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9186 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9187 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9188 { "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]9189
9190 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9191 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9192 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9193 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9194 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9195 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9196 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9197 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9198 { "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]9199 { "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]9200
9201 { NULL, NULL, NULL, NULL },
9202}};
9203
9204/************************************************************************/
9205/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9206/************************************************************************/
9207/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9208static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9209 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9210 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9211 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9212 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9213 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9214 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9215 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9216 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9217 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9218 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9219 { "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]9220 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9221}};
9222
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9223
9224__attribute__((constructor))
9225static void __http_protocol_init(void)
9226{
9227 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9228 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9229}
9230
9231
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9232/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9233 * Local variables:
9234 * c-indent-level: 8
9235 * c-basic-offset: 8
9236 * End:
9237 */