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git01.mediatek.com / haproxy / 4baae248fc77eaaad308fb5fbdf5d0bd71081f5b / . / src / proto_http.c
blob: 13a72c45fe58b3236547223ce2ce979aa0413721 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]95/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
96const char *HTTP_401_fmt =
97 "HTTP/1.0 401 Unauthorized\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]100 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
102 "\r\n"
103 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
104
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]105const char *HTTP_407_fmt =
106 "HTTP/1.0 407 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
109 "Content-Type: text/html\r\n"
110 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]116 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117 [HTTP_ERR_400] = 400,
118 [HTTP_ERR_403] = 403,
119 [HTTP_ERR_408] = 408,
120 [HTTP_ERR_500] = 500,
121 [HTTP_ERR_502] = 502,
122 [HTTP_ERR_503] = 503,
123 [HTTP_ERR_504] = 504,
124};
125
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]126static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]127 [HTTP_ERR_200] =
128 "HTTP/1.0 200 OK\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "\r\n"
133 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]136 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 "Cache-Control: no-cache\r\n"
138 "Connection: close\r\n"
139 "Content-Type: text/html\r\n"
140 "\r\n"
141 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
142
143 [HTTP_ERR_403] =
144 "HTTP/1.0 403 Forbidden\r\n"
145 "Cache-Control: no-cache\r\n"
146 "Connection: close\r\n"
147 "Content-Type: text/html\r\n"
148 "\r\n"
149 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
150
151 [HTTP_ERR_408] =
152 "HTTP/1.0 408 Request Time-out\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
158
159 [HTTP_ERR_500] =
160 "HTTP/1.0 500 Server Error\r\n"
161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
166
167 [HTTP_ERR_502] =
168 "HTTP/1.0 502 Bad Gateway\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
174
175 [HTTP_ERR_503] =
176 "HTTP/1.0 503 Service Unavailable\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
182
183 [HTTP_ERR_504] =
184 "HTTP/1.0 504 Gateway Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
190
191};
192
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]193/* status codes available for the stats admin page (strictly 4 chars length) */
194const char *stat_status_codes[STAT_STATUS_SIZE] = {
195 [STAT_STATUS_DENY] = "DENY",
196 [STAT_STATUS_DONE] = "DONE",
197 [STAT_STATUS_ERRP] = "ERRP",
198 [STAT_STATUS_EXCD] = "EXCD",
199 [STAT_STATUS_NONE] = "NONE",
200 [STAT_STATUS_PART] = "PART",
201 [STAT_STATUS_UNKN] = "UNKN",
202};
203
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205/* We must put the messages here since GCC cannot initialize consts depending
206 * on strlen().
207 */
208struct chunk http_err_chunks[HTTP_ERR_SIZE];
209
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210#define FD_SETS_ARE_BITFIELDS
211#ifdef FD_SETS_ARE_BITFIELDS
212/*
213 * This map is used with all the FD_* macros to check whether a particular bit
214 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
215 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
216 * byte should be encoded. Be careful to always pass bytes from 0 to 255
217 * exclusively to the macros.
218 */
219fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
221
222#else
223#error "Check if your OS uses bitfields for fd_sets"
224#endif
225
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]226void init_proto_http()
227{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]228 int i;
229 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]231
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]232 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
233 if (!http_err_msgs[msg]) {
234 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
235 abort();
236 }
237
238 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
239 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
240 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]241
242 /* initialize the log header encoding map : '{|}"#' should be encoded with
243 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
244 * URL encoding only requires '"', '#' to be encoded as well as non-
245 * printable characters above.
246 */
247 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
248 memset(url_encode_map, 0, sizeof(url_encode_map));
249 for (i = 0; i < 32; i++) {
250 FD_SET(i, hdr_encode_map);
251 FD_SET(i, url_encode_map);
252 }
253 for (i = 127; i < 256; i++) {
254 FD_SET(i, hdr_encode_map);
255 FD_SET(i, url_encode_map);
256 }
257
258 tmp = "\"#{|}";
259 while (*tmp) {
260 FD_SET(*tmp, hdr_encode_map);
261 tmp++;
262 }
263
264 tmp = "\"#";
265 while (*tmp) {
266 FD_SET(*tmp, url_encode_map);
267 tmp++;
268 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]269
270 /* memory allocations */
271 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]272 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]273}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]274
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]275/*
276 * We have 26 list of methods (1 per first letter), each of which can have
277 * up to 3 entries (2 valid, 1 null).
278 */
279struct http_method_desc {
280 http_meth_t meth;
281 int len;
282 const char text[8];
283};
284
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]285const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]286 ['C' - 'A'] = {
287 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
288 },
289 ['D' - 'A'] = {
290 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
291 },
292 ['G' - 'A'] = {
293 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
294 },
295 ['H' - 'A'] = {
296 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
297 },
298 ['P' - 'A'] = {
299 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
300 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
301 },
302 ['T' - 'A'] = {
303 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
304 },
305 /* rest is empty like this :
306 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
307 */
308};
309
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]310/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]311 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]312 * RFC2616 for those chars.
313 */
314
315const char http_is_spht[256] = {
316 [' '] = 1, ['\t'] = 1,
317};
318
319const char http_is_crlf[256] = {
320 ['\r'] = 1, ['\n'] = 1,
321};
322
323const char http_is_lws[256] = {
324 [' '] = 1, ['\t'] = 1,
325 ['\r'] = 1, ['\n'] = 1,
326};
327
328const char http_is_sep[256] = {
329 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
330 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
331 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
332 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
333 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
334};
335
336const char http_is_ctl[256] = {
337 [0 ... 31] = 1,
338 [127] = 1,
339};
340
341/*
342 * A token is any ASCII char that is neither a separator nor a CTL char.
343 * Do not overwrite values in assignment since gcc-2.95 will not handle
344 * them correctly. Instead, define every non-CTL char's status.
345 */
346const char http_is_token[256] = {
347 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
348 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
349 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
350 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
351 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
352 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
353 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
354 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
355 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
356 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
357 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
358 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
359 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
360 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
361 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
362 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
363 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
364 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
365 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
366 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
367 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
368 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
369 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
370 ['|'] = 1, ['}'] = 0, ['~'] = 1,
371};
372
373
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]374/*
375 * An http ver_token is any ASCII which can be found in an HTTP version,
376 * which includes 'H', 'T', 'P', '/', '.' and any digit.
377 */
378const char http_is_ver_token[256] = {
379 ['.'] = 1, ['/'] = 1,
380 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
381 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
382 ['H'] = 1, ['P'] = 1, ['T'] = 1,
383};
384
385
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]386/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]387 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
388 */
389#if defined(DEBUG_FSM)
390static void http_silent_debug(int line, struct session *s)
391{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]392 chunk_printf(&trash,
393 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
394 line,
395 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
396 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
397 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]398
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]399 chunk_printf(&trash,
400 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
401 line,
402 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
403 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
404 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]405}
406#else
407#define http_silent_debug(l,s) do { } while (0)
408#endif
409
410/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]411 * Adds a header and its CRLF at the tail of the message's buffer, just before
412 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]413 * The header is also automatically added to the index <hdr_idx>, and the end
414 * of headers is automatically adjusted. The number of bytes added is returned
415 * on success, otherwise <0 is returned indicating an error.
416 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]417int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]418{
419 int bytes, len;
420
421 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]422 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]423 if (!bytes)
424 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]425 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]426 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
427}
428
429/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]430 * Adds a header and its CRLF at the tail of the message's buffer, just before
431 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]432 * the buffer is only opened and the space reserved, but nothing is copied.
433 * The header is also automatically added to the index <hdr_idx>, and the end
434 * of headers is automatically adjusted. The number of bytes added is returned
435 * on success, otherwise <0 is returned indicating an error.
436 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]437int http_header_add_tail2(struct http_msg *msg,
438 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]439{
440 int bytes;
441
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]442 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]443 if (!bytes)
444 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]445 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]446 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
447}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]448
449/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]450 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
451 * If so, returns the position of the first non-space character relative to
452 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
453 * to return a pointer to the place after the first space. Returns 0 if the
454 * header name does not match. Checks are case-insensitive.
455 */
456int http_header_match2(const char *hdr, const char *end,
457 const char *name, int len)
458{
459 const char *val;
460
461 if (hdr + len >= end)
462 return 0;
463 if (hdr[len] != ':')
464 return 0;
465 if (strncasecmp(hdr, name, len) != 0)
466 return 0;
467 val = hdr + len + 1;
468 while (val < end && HTTP_IS_SPHT(*val))
469 val++;
470 if ((val >= end) && (len + 2 <= end - hdr))
471 return len + 2; /* we may replace starting from second space */
472 return val - hdr;
473}
474
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]475/* Find the end of the header value contained between <s> and <e>. See RFC2616,
476 * par 2.2 for more information. Note that it requires a valid header to return
477 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]478 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]479char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]480{
481 int quoted, qdpair;
482
483 quoted = qdpair = 0;
484 for (; s < e; s++) {
485 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]486 else if (quoted) {
487 if (*s == '\\') qdpair = 1;
488 else if (*s == '"') quoted = 0;
489 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]490 else if (*s == '"') quoted = 1;
491 else if (*s == ',') return s;
492 }
493 return s;
494}
495
496/* Find the first or next occurrence of header <name> in message buffer <sol>
497 * using headers index <idx>, and return it in the <ctx> structure. This
498 * structure holds everything necessary to use the header and find next
499 * occurrence. If its <idx> member is 0, the header is searched from the
500 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]501 * 1 when it finds a value, and 0 when there is no more. It is designed to work
502 * with headers defined as comma-separated lists. As a special case, if ctx->val
503 * is NULL when searching for a new values of a header, the current header is
504 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]505 */
506int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]507 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 struct hdr_ctx *ctx)
509{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]510 char *eol, *sov;
511 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]512
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]513 cur_idx = ctx->idx;
514 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]515 /* We have previously returned a value, let's search
516 * another one on the same line.
517 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]518 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]519 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]520 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]521 eol = sol + idx->v[cur_idx].len;
522
523 if (sov >= eol)
524 /* no more values in this header */
525 goto next_hdr;
526
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]527 /* values remaining for this header, skip the comma but save it
528 * for later use (eg: for header deletion).
529 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]530 sov++;
531 while (sov < eol && http_is_lws[(unsigned char)*sov])
532 sov++;
533
534 goto return_hdr;
535 }
536
537 /* first request for this header */
538 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]539 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]540 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]541 while (cur_idx) {
542 eol = sol + idx->v[cur_idx].len;
543
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]544 if (len == 0) {
545 /* No argument was passed, we want any header.
546 * To achieve this, we simply build a fake request. */
547 while (sol + len < eol && sol[len] != ':')
548 len++;
549 name = sol;
550 }
551
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]552 if ((len < eol - sol) &&
553 (sol[len] == ':') &&
554 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]555 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]556 sov = sol + len + 1;
557 while (sov < eol && http_is_lws[(unsigned char)*sov])
558 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]559
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]560 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561 ctx->prev = old_idx;
562 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]563 ctx->idx = cur_idx;
564 ctx->val = sov - sol;
565
566 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]567 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]568 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]569 eol--;
570 ctx->tws++;
571 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]572 ctx->vlen = eol - sov;
573 return 1;
574 }
575 next_hdr:
576 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]577 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]578 cur_idx = idx->v[cur_idx].next;
579 }
580 return 0;
581}
582
583int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]584 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]585 struct hdr_ctx *ctx)
586{
587 return http_find_header2(name, strlen(name), sol, idx, ctx);
588}
589
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]590/* Remove one value of a header. This only works on a <ctx> returned by one of
591 * the http_find_header functions. The value is removed, as well as surrounding
592 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]593 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]594 * message <msg>. The new index is returned. If it is zero, it means there is
595 * no more header, so any processing may stop. The ctx is always left in a form
596 * that can be handled by http_find_header2() to find next occurrence.
597 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]598int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]599{
600 int cur_idx = ctx->idx;
601 char *sol = ctx->line;
602 struct hdr_idx_elem *hdr;
603 int delta, skip_comma;
604
605 if (!cur_idx)
606 return 0;
607
608 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]609 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]610 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]611 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]612 http_msg_move_end(msg, delta);
613 idx->used--;
614 hdr->len = 0; /* unused entry */
615 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]616 if (idx->tail == ctx->idx)
617 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]618 ctx->idx = ctx->prev; /* walk back to the end of previous header */
619 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
620 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]621 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]622 return ctx->idx;
623 }
624
625 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]626 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
627 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]628 */
629
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]630 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]631 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]632 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]633 NULL, 0);
634 hdr->len += delta;
635 http_msg_move_end(msg, delta);
636 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]637 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]638 return ctx->idx;
639}
640
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]641/* This function handles a server error at the stream interface level. The
642 * stream interface is assumed to be already in a closed state. An optional
643 * message is copied into the input buffer, and an HTTP status code stored.
644 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]645 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]646 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]647static void http_server_error(struct session *t, struct stream_interface *si,
648 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]649{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]650 channel_auto_read(si->ob);
651 channel_abort(si->ob);
652 channel_auto_close(si->ob);
653 channel_erase(si->ob);
654 channel_auto_close(si->ib);
655 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]656 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]657 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]658 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]659 }
660 if (!(t->flags & SN_ERR_MASK))
661 t->flags |= err;
662 if (!(t->flags & SN_FINST_MASK))
663 t->flags |= finst;
664}
665
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]666/* This function returns the appropriate error location for the given session
667 * and message.
668 */
669
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]670struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]671{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]672 if (s->be->errmsg[msgnum].str)
673 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]674 else if (s->fe->errmsg[msgnum].str)
675 return &s->fe->errmsg[msgnum];
676 else
677 return &http_err_chunks[msgnum];
678}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]679
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]680/*
681 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
682 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
683 */
684static http_meth_t find_http_meth(const char *str, const int len)
685{
686 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]687 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]688
689 m = ((unsigned)*str - 'A');
690
691 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]692 for (h = http_methods[m]; h->len > 0; h++) {
693 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]694 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]695 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 };
698 return HTTP_METH_OTHER;
699 }
700 return HTTP_METH_NONE;
701
702}
703
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]704/* Parse the URI from the given transaction (which is assumed to be in request
705 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
706 * It is returned otherwise.
707 */
708static char *
709http_get_path(struct http_txn *txn)
710{
711 char *ptr, *end;
712
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]713 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]714 end = ptr + txn->req.sl.rq.u_l;
715
716 if (ptr >= end)
717 return NULL;
718
719 /* RFC2616, par. 5.1.2 :
720 * Request-URI = "*" | absuri | abspath | authority
721 */
722
723 if (*ptr == '*')
724 return NULL;
725
726 if (isalpha((unsigned char)*ptr)) {
727 /* this is a scheme as described by RFC3986, par. 3.1 */
728 ptr++;
729 while (ptr < end &&
730 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
731 ptr++;
732 /* skip '://' */
733 if (ptr == end || *ptr++ != ':')
734 return NULL;
735 if (ptr == end || *ptr++ != '/')
736 return NULL;
737 if (ptr == end || *ptr++ != '/')
738 return NULL;
739 }
740 /* skip [user[:passwd]@]host[:[port]] */
741
742 while (ptr < end && *ptr != '/')
743 ptr++;
744
745 if (ptr == end)
746 return NULL;
747
748 /* OK, we got the '/' ! */
749 return ptr;
750}
751
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]752/* Returns a 302 for a redirectable request that reaches a server working in
753 * in redirect mode. This may only be called just after the stream interface
754 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
755 * follow normal proxy processing. NOTE: this function is designed to support
756 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]757 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]758void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759{
760 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]761 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]762 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]763 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]764
765 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]766 trash.len = strlen(HTTP_302);
767 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]768
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]769 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]770
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]771 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]772 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]773 return;
774
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]775 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]776 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]777 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
778 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]779 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]780
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]781 /* 3: add the request URI. Since it was already forwarded, we need
782 * to temporarily rewind the buffer.
783 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]784 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]785 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]786
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]787 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]788 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]789
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]790 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]791
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 if (!path)
793 return;
794
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]795 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]796 return;
797
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]798 memcpy(trash.str + trash.len, path, len);
799 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]800
801 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]802 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
803 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]804 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]805 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
806 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]807 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]808
809 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]810 si_shutr(si);
811 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]812 si->err_type = SI_ET_NONE;
813 si->err_loc = NULL;
814 si->state = SI_ST_CLO;
815
816 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]817 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]818
819 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy 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 Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2548 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]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
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2555 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
2556 s->unique_id = pool_alloc2(pool2_uniqueid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2557
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2558 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2559 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2560 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2561
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2562 /* ... and check if the request is HTTP/1.1 or above */
2563 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2564 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2565 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2566 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2567 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2568
2569 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2570 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]2571
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2572 /* if the frontend has "option http-use-proxy-header", we'll check if
2573 * we have what looks like a proxied connection instead of a connection,
2574 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2575 * Note that this is *not* RFC-compliant, however browsers and proxies
2576 * happen to do that despite being non-standard :-(
2577 * We consider that a request not beginning with either '/' or '*' is
2578 * a proxied connection, which covers both "scheme://location" and
2579 * CONNECT ip:port.
2580 */
2581 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2582 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2583 txn->flags |= TX_USE_PX_CONN;
2584
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2585 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2586 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2587
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2588 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2589 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2590 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2591 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2592
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2593 /* 6: determine the transfer-length.
2594 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2595 * the presence of a message-body in a REQUEST and its transfer length
2596 * must be determined that way (in order of precedence) :
2597 * 1. The presence of a message-body in a request is signaled by the
2598 * inclusion of a Content-Length or Transfer-Encoding header field
2599 * in the request's header fields. When a request message contains
2600 * both a message-body of non-zero length and a method that does
2601 * not define any semantics for that request message-body, then an
2602 * origin server SHOULD either ignore the message-body or respond
2603 * with an appropriate error message (e.g., 413). A proxy or
2604 * gateway, when presented the same request, SHOULD either forward
2605 * the request inbound with the message- body or ignore the
2606 * message-body when determining a response.
2607 *
2608 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2609 * and the "chunked" transfer-coding (Section 6.2) is used, the
2610 * transfer-length is defined by the use of this transfer-coding.
2611 * If a Transfer-Encoding header field is present and the "chunked"
2612 * transfer-coding is not present, the transfer-length is defined
2613 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2614 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2615 * 3. If a Content-Length header field is present, its decimal value in
2616 * OCTETs represents both the entity-length and the transfer-length.
2617 * If a message is received with both a Transfer-Encoding header
2618 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2619 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2620 * 4. By the server closing the connection. (Closing the connection
2621 * cannot be used to indicate the end of a request body, since that
2622 * would leave no possibility for the server to send back a response.)
2623 *
2624 * Whenever a transfer-coding is applied to a message-body, the set of
2625 * transfer-codings MUST include "chunked", unless the message indicates
2626 * it is terminated by closing the connection. When the "chunked"
2627 * transfer-coding is used, it MUST be the last transfer-coding applied
2628 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2629 */
2630
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2631 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2632 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2633 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2634 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2635 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2636 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2637 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2638 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2639 /* bad transfer-encoding (chunked followed by something else) */
2640 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2641 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2642 break;
2643 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2644 }
2645
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2646 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2647 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2648 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2649 signed long long cl;
2650
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2651 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2652 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2653 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2654 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2655
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2656 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2657 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2658 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2659 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2660
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2661 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2662 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2663 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2664 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2665
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2666 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2667 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2668 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2669 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2670
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2671 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2672 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2673 }
2674
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2675 /* bodyless requests have a known length */
2676 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2677 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2678
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2679 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2680 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2681 req->analyse_exp = TICK_ETERNITY;
2682 return 1;
2683
2684 return_bad_req:
2685 /* We centralize bad requests processing here */
2686 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2687 /* we detected a parsing error. We want to archive this request
2688 * in the dedicated proxy area for later troubleshooting.
2689 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2690 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]2691 }
2692
2693 txn->req.msg_state = HTTP_MSG_ERROR;
2694 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2695 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2696
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2697 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2698 if (s->listener->counters)
2699 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2700
2701 return_prx_cond:
2702 if (!(s->flags & SN_ERR_MASK))
2703 s->flags |= SN_ERR_PRXCOND;
2704 if (!(s->flags & SN_FINST_MASK))
2705 s->flags |= SN_FINST_R;
2706
2707 req->analysers = 0;
2708 req->analyse_exp = TICK_ETERNITY;
2709 return 0;
2710}
2711
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2712/* We reached the stats page through a POST request.
2713 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2714 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2715 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2716int 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]2717{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2718 struct proxy *px = NULL;
2719 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2720
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2721 char key[LINESIZE];
2722 int action = ST_ADM_ACTION_NONE;
2723 int reprocess = 0;
2724
2725 int total_servers = 0;
2726 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2727
2728 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2729 char *st_cur_param = NULL;
2730 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2731
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2732 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2733 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2734
2735 cur_param = next_param = end_params;
2736
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2737 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2738 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2739 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2740 return 1;
2741 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2742 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2743 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2744 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2745 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2746 }
2747
2748 *end_params = '\0';
2749
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2750 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2751
2752 /*
2753 * Parse the parameters in reverse order to only store the last value.
2754 * From the html form, the backend and the action are at the end.
2755 */
2756 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2757 char *value;
2758 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2759
2760 cur_param--;
2761 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2762 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2763 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2764 poffset = (cur_param != first_param ? 1 : 0);
2765 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2766 if ((plen > 0) && (plen <= sizeof(key))) {
2767 strncpy(key, cur_param + poffset, plen);
2768 key[plen - 1] = '\0';
2769 } else {
2770 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2771 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2772 }
2773
2774 /* Parse the value */
2775 value = key;
2776 while (*value != '\0' && *value != '=') {
2777 value++;
2778 }
2779 if (*value == '=') {
2780 /* Ok, a value is found, we can mark the end of the key */
2781 *value++ = '\0';
2782 }
2783
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2784 if (!url_decode(key) || !url_decode(value))
2785 break;
2786
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2787 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2788 if (!px && (strcmp(key, "b") == 0)) {
2789 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2790 /* the backend name is unknown or ambiguous (duplicate names) */
2791 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2792 goto out;
2793 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2794 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2795 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2796 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2797 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2798 }
2799 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2800 action = ST_ADM_ACTION_ENABLE;
2801 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2802 else if (strcmp(value, "stop") == 0) {
2803 action = ST_ADM_ACTION_STOP;
2804 }
2805 else if (strcmp(value, "start") == 0) {
2806 action = ST_ADM_ACTION_START;
2807 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2808 else if (strcmp(value, "shutdown") == 0) {
2809 action = ST_ADM_ACTION_SHUTDOWN;
2810 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2811 else {
2812 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2813 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2814 }
2815 }
2816 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2817 if (!(px && action)) {
2818 /*
2819 * Indicates that we'll need to reprocess the parameters
2820 * as soon as backend and action are known
2821 */
2822 if (!reprocess) {
2823 st_cur_param = cur_param;
2824 st_next_param = next_param;
2825 }
2826 reprocess = 1;
2827 }
2828 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2829 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2830 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2831 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2832 /* Not already in maintenance, we can change the server state */
2833 sv->state |= SRV_MAINTAIN;
2834 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2835 altered_servers++;
2836 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2837 }
2838 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2839 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2840 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2841 /* Already in maintenance, we can change the server state */
2842 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2843 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2844 altered_servers++;
2845 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2846 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2847 break;
2848 case ST_ADM_ACTION_STOP:
2849 case ST_ADM_ACTION_START:
2850 if (action == ST_ADM_ACTION_START)
2851 sv->uweight = sv->iweight;
2852 else
2853 sv->uweight = 0;
2854
2855 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2856 /* we must take care of not pushing the server to full throttle during slow starts */
2857 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2858 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2859 else
2860 sv->eweight = BE_WEIGHT_SCALE;
2861 sv->eweight *= sv->uweight;
2862 } else {
2863 sv->eweight = sv->uweight;
2864 }
2865
2866 /* static LB algorithms are a bit harder to update */
2867 if (px->lbprm.update_server_eweight)
2868 px->lbprm.update_server_eweight(sv);
2869 else if (sv->eweight) {
2870 if (px->lbprm.set_server_status_up)
2871 px->lbprm.set_server_status_up(sv);
2872 }
2873 else {
2874 if (px->lbprm.set_server_status_down)
2875 px->lbprm.set_server_status_down(sv);
2876 }
2877 altered_servers++;
2878 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2879 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2880 case ST_ADM_ACTION_SHUTDOWN:
2881 if (px->state != PR_STSTOPPED) {
2882 struct session *sess, *sess_bck;
2883
2884 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2885 if (sess->srv_conn == sv)
2886 session_shutdown(sess, SN_ERR_KILLED);
2887
2888 altered_servers++;
2889 total_servers++;
2890 }
2891 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2892 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2893 } else {
2894 /* the server name is unknown or ambiguous (duplicate names) */
2895 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2896 }
2897 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2898 if (reprocess && px && action) {
2899 /* Now, we know the backend and the action chosen by the user.
2900 * We can safely restart from the first server parameter
2901 * to reprocess them
2902 */
2903 cur_param = st_cur_param;
2904 next_param = st_next_param;
2905 reprocess = 0;
2906 goto reprocess_servers;
2907 }
2908
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2909 next_param = cur_param;
2910 }
2911 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2912
2913 if (total_servers == 0) {
2914 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2915 }
2916 else if (altered_servers == 0) {
2917 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2918 }
2919 else if (altered_servers == total_servers) {
2920 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2921 }
2922 else {
2923 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2924 }
2925 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2926 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2927}
2928
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2929/* This function checks whether we need to enable a POST analyser to parse a
2930 * stats request, and also registers the stats I/O handler. It returns zero
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]2931 * if it needs to come back again, otherwise non-zero if it finishes. In the
2932 * latter case, it also clears the request analysers.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2933 */
2934int http_handle_stats(struct session *s, struct channel *req)
2935{
2936 struct stats_admin_rule *stats_admin_rule;
2937 struct stream_interface *si = s->rep->prod;
2938 struct http_txn *txn = &s->txn;
2939 struct http_msg *msg = &txn->req;
2940 struct uri_auth *uri = s->be->uri_auth;
2941
2942 /* now check whether we have some admin rules for this request */
2943 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2944 int ret = 1;
2945
2946 if (stats_admin_rule->cond) {
2947 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2948 ret = acl_pass(ret);
2949 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2950 ret = !ret;
2951 }
2952
2953 if (ret) {
2954 /* no rule, or the rule matches */
2955 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
2956 break;
2957 }
2958 }
2959
2960 /* Was the status page requested with a POST ? */
2961 if (unlikely(txn->meth == HTTP_METH_POST)) {
2962 if (si->applet.ctx.stats.flags & STAT_ADMIN) {
2963 if (msg->msg_state < HTTP_MSG_100_SENT) {
2964 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2965 * send an HTTP/1.1 100 Continue intermediate response.
2966 */
2967 if (msg->flags & HTTP_MSGF_VER_11) {
2968 struct hdr_ctx ctx;
2969 ctx.idx = 0;
2970 /* Expect is allowed in 1.1, look for it */
2971 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2972 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2973 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2974 }
2975 }
2976 msg->msg_state = HTTP_MSG_100_SENT;
2977 s->logs.tv_request = now; /* update the request timer to reflect full request */
2978 }
2979 if (!http_process_req_stat_post(si, txn, req))
2980 return 0; /* we need more data */
2981 }
2982 else
2983 si->applet.ctx.stats.st_code = STAT_STATUS_DENY;
2984
2985 /* We don't want to land on the posted stats page because a refresh will
2986 * repost the data. We don't want this to happen on accident so we redirect
2987 * the browse to the stats page with a GET.
2988 */
2989 chunk_printf(&trash,
2990 "HTTP/1.0 303 See Other\r\n"
2991 "Cache-Control: no-cache\r\n"
2992 "Content-Type: text/plain\r\n"
2993 "Connection: close\r\n"
2994 "Location: %s;st=%s\r\n"
2995 "\r\n",
2996 uri->uri_prefix,
2997 ((si->applet.ctx.stats.st_code > STAT_STATUS_INIT) &&
2998 (si->applet.ctx.stats.st_code < STAT_STATUS_SIZE) &&
2999 stat_status_codes[si->applet.ctx.stats.st_code]) ?
3000 stat_status_codes[si->applet.ctx.stats.st_code] :
3001 stat_status_codes[STAT_STATUS_UNKN]);
3002
3003 s->txn.status = 303;
3004 s->logs.tv_request = now;
3005 stream_int_retnclose(req->prod, &trash);
3006 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
3007
3008 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3009 s->fe->fe_counters.intercepted_req++;
3010
3011 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3012 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3013 if (!(s->flags & SN_FINST_MASK))
3014 s->flags |= SN_FINST_R;
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3015 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3016 return 1;
3017 }
3018
3019 /* OK, let's go on now */
3020
3021 chunk_printf(&trash,
3022 "HTTP/1.0 200 OK\r\n"
3023 "Cache-Control: no-cache\r\n"
3024 "Connection: close\r\n"
3025 "Content-Type: %s\r\n",
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]3026 (si->applet.ctx.stats.flags & STAT_FMT_HTML) ? "text/html" : "text/plain");
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3027
3028 if (uri->refresh > 0 && !(si->applet.ctx.stats.flags & STAT_NO_REFRESH))
3029 chunk_appendf(&trash, "Refresh: %d\r\n",
3030 uri->refresh);
3031
3032 chunk_appendf(&trash, "\r\n");
3033
3034 s->txn.status = 200;
3035 s->logs.tv_request = now;
3036
3037 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3038 s->fe->fe_counters.intercepted_req++;
3039
3040 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3041 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3042 if (!(s->flags & SN_FINST_MASK))
3043 s->flags |= SN_FINST_R;
3044
3045 if (s->txn.meth == HTTP_METH_HEAD) {
3046 /* that's all we return in case of HEAD request, so let's immediately close. */
3047 stream_int_retnclose(req->prod, &trash);
3048 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
Willy Tarreaucbc743e2012-12-28 08:36:50 +0100[diff] [blame]3049 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3050 return 1;
3051 }
3052
3053 /* OK, push the response and hand over to the stats I/O handler */
3054 bi_putchk(s->rep, &trash);
3055
3056 s->task->nice = -32; /* small boost for HTTP statistics */
3057 stream_int_register_handler(s->rep->prod, &http_stats_applet);
3058 s->target = s->rep->prod->conn->target; // for logging only
3059 s->rep->prod->conn->xprt_ctx = s;
3060 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
3061 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3062 return 1;
3063}
3064
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3065/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3066 * transaction <txn>. Returns the first rule that prevents further processing
3067 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
3068 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
3069 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3070 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3071static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3072http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3073{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3074 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3075 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3076
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3077 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3078 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3079 continue;
3080
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3081 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3082 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3083 int ret;
3084
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3085 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]3086 ret = acl_pass(ret);
3087
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3088 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3089 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3090
3091 if (!ret) /* condition not matched */
3092 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3093 }
3094
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3095
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3096 switch (rule->action) {
3097 case HTTP_REQ_ACT_ALLOW:
3098 return NULL; /* "allow" rules are OK */
3099
3100 case HTTP_REQ_ACT_DENY:
3101 txn->flags |= TX_CLDENY;
3102 return rule;
3103
3104 case HTTP_REQ_ACT_AUTH:
3105 return rule;
3106
3107 case HTTP_REQ_ACT_SET_HDR:
3108 ctx.idx = 0;
3109 /* remove all occurrences of the header */
3110 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3111 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3112 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3113 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3114 /* now fall through to header addition */
3115
3116 case HTTP_REQ_ACT_ADD_HDR:
3117 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3118 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3119 trash.len = rule->arg.hdr_add.name_len;
3120 trash.str[trash.len++] = ':';
3121 trash.str[trash.len++] = ' ';
3122 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3123 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3124 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3125 }
3126 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3127
3128 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3129 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3130}
3131
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3132
3133/* Perform an HTTP redirect based on the information in <rule>. The function
3134 * returns non-zero on success, or zero in case of a, irrecoverable error such
3135 * as too large a request to build a valid response.
3136 */
3137static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3138{
3139 struct http_msg *msg = &txn->req;
3140 const char *msg_fmt;
3141
3142 /* build redirect message */
3143 switch(rule->code) {
3144 case 303:
3145 msg_fmt = HTTP_303;
3146 break;
3147 case 301:
3148 msg_fmt = HTTP_301;
3149 break;
3150 case 302:
3151 default:
3152 msg_fmt = HTTP_302;
3153 break;
3154 }
3155
3156 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3157 return 0;
3158
3159 switch(rule->type) {
3160 case REDIRECT_TYPE_SCHEME: {
3161 const char *path;
3162 const char *host;
3163 struct hdr_ctx ctx;
3164 int pathlen;
3165 int hostlen;
3166
3167 host = "";
3168 hostlen = 0;
3169 ctx.idx = 0;
3170 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3171 host = ctx.line + ctx.val;
3172 hostlen = ctx.vlen;
3173 }
3174
3175 path = http_get_path(txn);
3176 /* build message using path */
3177 if (path) {
3178 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3179 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3180 int qs = 0;
3181 while (qs < pathlen) {
3182 if (path[qs] == '?') {
3183 pathlen = qs;
3184 break;
3185 }
3186 qs++;
3187 }
3188 }
3189 } else {
3190 path = "/";
3191 pathlen = 1;
3192 }
3193
3194 /* check if we can add scheme + "://" + host + path */
3195 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3196 return 0;
3197
3198 /* add scheme */
3199 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3200 trash.len += rule->rdr_len;
3201
3202 /* add "://" */
3203 memcpy(trash.str + trash.len, "://", 3);
3204 trash.len += 3;
3205
3206 /* add host */
3207 memcpy(trash.str + trash.len, host, hostlen);
3208 trash.len += hostlen;
3209
3210 /* add path */
3211 memcpy(trash.str + trash.len, path, pathlen);
3212 trash.len += pathlen;
3213
3214 /* append a slash at the end of the location is needed and missing */
3215 if (trash.len && trash.str[trash.len - 1] != '/' &&
3216 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3217 if (trash.len > trash.size - 5)
3218 return 0;
3219 trash.str[trash.len] = '/';
3220 trash.len++;
3221 }
3222
3223 break;
3224 }
3225 case REDIRECT_TYPE_PREFIX: {
3226 const char *path;
3227 int pathlen;
3228
3229 path = http_get_path(txn);
3230 /* build message using path */
3231 if (path) {
3232 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3233 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3234 int qs = 0;
3235 while (qs < pathlen) {
3236 if (path[qs] == '?') {
3237 pathlen = qs;
3238 break;
3239 }
3240 qs++;
3241 }
3242 }
3243 } else {
3244 path = "/";
3245 pathlen = 1;
3246 }
3247
3248 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3249 return 0;
3250
3251 /* add prefix. Note that if prefix == "/", we don't want to
3252 * add anything, otherwise it makes it hard for the user to
3253 * configure a self-redirection.
3254 */
3255 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3256 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3257 trash.len += rule->rdr_len;
3258 }
3259
3260 /* add path */
3261 memcpy(trash.str + trash.len, path, pathlen);
3262 trash.len += pathlen;
3263
3264 /* append a slash at the end of the location is needed and missing */
3265 if (trash.len && trash.str[trash.len - 1] != '/' &&
3266 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3267 if (trash.len > trash.size - 5)
3268 return 0;
3269 trash.str[trash.len] = '/';
3270 trash.len++;
3271 }
3272
3273 break;
3274 }
3275 case REDIRECT_TYPE_LOCATION:
3276 default:
3277 if (trash.len + rule->rdr_len > trash.size - 4)
3278 return 0;
3279
3280 /* add location */
3281 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3282 trash.len += rule->rdr_len;
3283 break;
3284 }
3285
3286 if (rule->cookie_len) {
3287 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3288 trash.len += 14;
3289 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3290 trash.len += rule->cookie_len;
3291 memcpy(trash.str + trash.len, "\r\n", 2);
3292 trash.len += 2;
3293 }
3294
3295 /* add end of headers and the keep-alive/close status.
3296 * We may choose to set keep-alive if the Location begins
3297 * with a slash, because the client will come back to the
3298 * same server.
3299 */
3300 txn->status = rule->code;
3301 /* let's log the request time */
3302 s->logs.tv_request = now;
3303
3304 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
3305 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3306 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3307 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3308 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3309 /* keep-alive possible */
3310 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3311 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3312 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3313 trash.len += 30;
3314 } else {
3315 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3316 trash.len += 24;
3317 }
3318 }
3319 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3320 trash.len += 4;
3321 bo_inject(txn->rsp.chn, trash.str, trash.len);
3322 /* "eat" the request */
3323 bi_fast_delete(txn->req.chn->buf, msg->sov);
3324 msg->sov = 0;
3325 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3326 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3327 txn->req.msg_state = HTTP_MSG_CLOSED;
3328 txn->rsp.msg_state = HTTP_MSG_DONE;
3329 } else {
3330 /* keep-alive not possible */
3331 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3332 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3333 trash.len += 29;
3334 } else {
3335 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3336 trash.len += 23;
3337 }
3338 stream_int_retnclose(txn->req.chn->prod, &trash);
3339 txn->req.chn->analysers = 0;
3340 }
3341
3342 if (!(s->flags & SN_ERR_MASK))
3343 s->flags |= SN_ERR_PRXCOND;
3344 if (!(s->flags & SN_FINST_MASK))
3345 s->flags |= SN_FINST_R;
3346
3347 return 1;
3348}
3349
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3350/* This stream analyser runs all HTTP request processing which is common to
3351 * frontends and backends, which means blocking ACLs, filters, connection-close,
3352 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3353 * 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]3354 * either needs more data or wants to immediately abort the request (eg: deny,
3355 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3356 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3357int 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]3358{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3359 struct http_txn *txn = &s->txn;
3360 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3361 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3362 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3363 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3364 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]3365 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3366
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3367 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3368 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3369 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3370 return 0;
3371 }
3372
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3373 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3374 req->analyse_exp = TICK_ETERNITY;
3375
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3376 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]3377 now_ms, __FUNCTION__,
3378 s,
3379 req,
3380 req->rex, req->wex,
3381 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3382 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3383 req->analysers);
3384
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3385 /* first check whether we have some ACLs set to block this request */
3386 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3387 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]3388
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3389 ret = acl_pass(ret);
3390 if (cond->pol == ACL_COND_UNLESS)
3391 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3392
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3393 if (ret) {
3394 txn->status = 403;
3395 /* let's log the request time */
3396 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3397 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3398 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3399 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3400 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3401 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3402
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3403 /* just in case we have some per-backend tracking */
3404 session_inc_be_http_req_ctr(s);
3405
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3406 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3407 http_req_last_rule = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3408
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3409 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3410 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3411 do_stats = stats_check_uri(s->rep->prod, txn, px);
3412 if (do_stats)
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3413 http_req_last_rule = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3414 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3415 else
3416 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3417
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3418 /* return a 403 if either rule has blocked */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3419 if (txn->flags & TX_CLDENY) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3420 txn->status = 403;
3421 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3422 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3423 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3424 s->fe->fe_counters.denied_req++;
3425 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3426 s->be->be_counters.denied_req++;
3427 if (s->listener->counters)
3428 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3429 goto return_prx_cond;
3430 }
3431
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3432 /* try headers filters */
3433 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3434 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3435 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3436
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3437 /* has the request been denied ? */
3438 if (txn->flags & TX_CLDENY) {
3439 /* no need to go further */
3440 txn->status = 403;
3441 /* let's log the request time */
3442 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3443 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3444 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3445 goto return_prx_cond;
3446 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3447
3448 /* When a connection is tarpitted, we use the tarpit timeout,
3449 * which may be the same as the connect timeout if unspecified.
3450 * If unset, then set it to zero because we really want it to
3451 * eventually expire. We build the tarpit as an analyser.
3452 */
3453 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3454 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3455 /* wipe the request out so that we can drop the connection early
3456 * if the client closes first.
3457 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3458 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3459 req->analysers = 0; /* remove switching rules etc... */
3460 req->analysers |= AN_REQ_HTTP_TARPIT;
3461 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3462 if (!req->analyse_exp)
3463 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3464 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3465 return 1;
3466 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3467 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3468
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3469 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3470 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3471 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3472 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3473 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3474 * avoid to redo the same work if FE and BE have the same settings (common).
3475 * The method consists in checking if options changed between the two calls
3476 * (implying that either one is non-null, or one of them is non-null and we
3477 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3478 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3479
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3480 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3481 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3482 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3483 (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]3484 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3485
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3486 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3487 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3488 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3489 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3490 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3491 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3492 tmp = TX_CON_WANT_CLO;
3493
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3494 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3495 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3496
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3497 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3498 /* parse the Connection header and possibly clean it */
3499 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3500 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3501 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3502 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3503 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3504 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3505 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3506 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3507 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3508
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3509 /* check if client or config asks for explicit close in KAL/SCL */
3510 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3511 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3512 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3513 (!(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]3514 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3515 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3516 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3517 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3518 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3519
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3520 /* we can be blocked here because the request needs to be authenticated,
3521 * either to pass or to access stats.
3522 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3523 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3524 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3525
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3526 if (!realm)
3527 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3528
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3529 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]3530 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3531 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3532 /* on 401 we still count one error, because normal browsing
3533 * won't significantly increase the counter but brute force
3534 * attempts will.
3535 */
3536 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3537 goto return_prx_cond;
3538 }
3539
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3540 /* add request headers from the rule sets in the same order */
3541 list_for_each_entry(wl, &px->req_add, list) {
3542 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3543 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]3544 ret = acl_pass(ret);
3545 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3546 ret = !ret;
3547 if (!ret)
3548 continue;
3549 }
3550
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3551 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3552 goto return_bad_req;
3553 }
3554
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3555 if (unlikely(do_stats)) {
3556 /* process the stats request now */
3557 if (!http_handle_stats(s, req)) {
3558 /* we need more data, let's come back here later */
3559 req->analysers |= an_bit;
3560 channel_dont_connect(req);
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3561 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3562 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3563 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3564
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3565 /* check whether we have some ACLs set to redirect this request */
3566 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3567 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3568 int ret;
3569
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3570 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]3571 ret = acl_pass(ret);
3572 if (rule->cond->pol == ACL_COND_UNLESS)
3573 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3574 if (!ret)
3575 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3576 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3577 if (!http_apply_redirect_rule(rule, s, txn))
3578 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3579
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3580 req->analyse_exp = TICK_ETERNITY;
3581 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3582 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3583
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3584 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3585 * If this happens, then the data will not come immediately, so we must
3586 * send all what we have without waiting. Note that due to the small gain
3587 * 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]3588 * 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]3589 * itself once used.
3590 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3591 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3592
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3593 /* that's OK for us now, let's move on to next analysers */
3594 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3595
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3596 return_bad_req:
3597 /* We centralize bad requests processing here */
3598 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3599 /* we detected a parsing error. We want to archive this request
3600 * in the dedicated proxy area for later troubleshooting.
3601 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3602 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]3603 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3604
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3605 txn->req.msg_state = HTTP_MSG_ERROR;
3606 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3607 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3608
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3609 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3610 if (s->listener->counters)
3611 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3612
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3613 return_prx_cond:
3614 if (!(s->flags & SN_ERR_MASK))
3615 s->flags |= SN_ERR_PRXCOND;
3616 if (!(s->flags & SN_FINST_MASK))
3617 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3618
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3619 req->analysers = 0;
3620 req->analyse_exp = TICK_ETERNITY;
3621 return 0;
3622}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3623
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3624/* This function performs all the processing enabled for the current request.
3625 * It returns 1 if the processing can continue on next analysers, or zero if it
3626 * needs more data, encounters an error, or wants to immediately abort the
3627 * request. It relies on buffers flags, and updates s->req->analysers.
3628 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3629int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3630{
3631 struct http_txn *txn = &s->txn;
3632 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3633
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3634 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3635 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3636 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3637 return 0;
3638 }
3639
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3640 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]3641 now_ms, __FUNCTION__,
3642 s,
3643 req,
3644 req->rex, req->wex,
3645 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3646 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3647 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3648
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3649 if (s->fe->comp || s->be->comp)
3650 select_compression_request_header(s, req->buf);
3651
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3652 /*
3653 * Right now, we know that we have processed the entire headers
3654 * and that unwanted requests have been filtered out. We can do
3655 * whatever we want with the remaining request. Also, now we
3656 * may have separate values for ->fe, ->be.
3657 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3658
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3659 /*
3660 * If HTTP PROXY is set we simply get remote server address
3661 * parsing incoming request.
3662 */
3663 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3664 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]3665 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3666
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3667 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3668 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3669 * Note that doing so might move headers in the request, but
3670 * the fields will stay coherent and the URI will not move.
3671 * This should only be performed in the backend.
3672 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3673 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3674 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3675 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3676
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3677 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3678 * 8: the appsession cookie was looked up very early in 1.2,
3679 * so let's do the same now.
3680 */
3681
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3682 /* It needs to look into the URI unless persistence must be ignored */
3683 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3684 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]3685 }
3686
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3687 /* add unique-id if "header-unique-id" is specified */
3688
3689 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3690 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3691
3692 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3693 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3694 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3695 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3696 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]3697 goto return_bad_req;
3698 }
3699
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3700 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3701 * 9: add X-Forwarded-For if either the frontend or the backend
3702 * asks for it.
3703 */
3704 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3705 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3706 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3707 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3708 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]3709 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3710 /* The header is set to be added only if none is present
3711 * and we found it, so don't do anything.
3712 */
3713 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3714 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3715 /* Add an X-Forwarded-For header unless the source IP is
3716 * in the 'except' network range.
3717 */
3718 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3719 (((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]3720 != s->fe->except_net.s_addr) &&
3721 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3722 (((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]3723 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3724 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3725 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3726 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3727
3728 /* Note: we rely on the backend to get the header name to be used for
3729 * x-forwarded-for, because the header is really meant for the backends.
3730 * However, if the backend did not specify any option, we have to rely
3731 * on the frontend's header name.
3732 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3733 if (s->be->fwdfor_hdr_len) {
3734 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3735 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3736 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3737 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3738 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3739 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3740 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]3741
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3742 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]3743 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3744 }
3745 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3746 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3747 /* FIXME: for the sake of completeness, we should also support
3748 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3749 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3750 int len;
3751 char pn[INET6_ADDRSTRLEN];
3752 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3753 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3754 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3755
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3756 /* Note: we rely on the backend to get the header name to be used for
3757 * x-forwarded-for, because the header is really meant for the backends.
3758 * However, if the backend did not specify any option, we have to rely
3759 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3760 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3761 if (s->be->fwdfor_hdr_len) {
3762 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3763 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3764 } else {
3765 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3766 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3767 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3768 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3769
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3770 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]3771 goto return_bad_req;
3772 }
3773 }
3774
3775 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3776 * 10: add X-Original-To if either the frontend or the backend
3777 * asks for it.
3778 */
3779 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3780
3781 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3782 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3783 /* Add an X-Original-To header unless the destination IP is
3784 * in the 'except' network range.
3785 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3786 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3787
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3788 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3789 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3790 (((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]3791 != s->fe->except_to.s_addr) &&
3792 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3793 (((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]3794 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3795 int len;
3796 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3797 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3798
3799 /* Note: we rely on the backend to get the header name to be used for
3800 * x-original-to, because the header is really meant for the backends.
3801 * However, if the backend did not specify any option, we have to rely
3802 * on the frontend's header name.
3803 */
3804 if (s->be->orgto_hdr_len) {
3805 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3806 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3807 } else {
3808 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3809 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3810 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3811 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]3812
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3813 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]3814 goto return_bad_req;
3815 }
3816 }
3817 }
3818
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3819 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3820 * If an "Upgrade" token is found, the header is left untouched in order not to have
3821 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3822 * "Upgrade" is present in the Connection header.
3823 */
3824 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3825 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3826 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3827 unsigned int want_flags = 0;
3828
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3829 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3830 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3831 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3832 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3833 want_flags |= TX_CON_CLO_SET;
3834 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3835 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3836 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3837 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3838 want_flags |= TX_CON_KAL_SET;
3839 }
3840
3841 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3842 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3843 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3844
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3845
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3846 /* If we have no server assigned yet and we're balancing on url_param
3847 * with a POST request, we may be interested in checking the body for
3848 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3849 */
3850 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3851 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3852 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3853 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3854 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3855 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3856 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3857
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3858 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3859 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3860#ifdef TCP_QUICKACK
3861 /* We expect some data from the client. Unless we know for sure
3862 * we already have a full request, we have to re-enable quick-ack
3863 * in case we previously disabled it, otherwise we might cause
3864 * the client to delay further data.
3865 */
3866 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3867 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3868 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3869 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]3870#endif
3871 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3872
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3873 /*************************************************************
3874 * OK, that's finished for the headers. We have done what we *
3875 * could. Let's switch to the DATA state. *
3876 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3877 req->analyse_exp = TICK_ETERNITY;
3878 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3879
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3880 /* if the server closes the connection, we want to immediately react
3881 * and close the socket to save packets and syscalls.
3882 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]3883 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
3884 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3885
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3886 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3887 /* OK let's go on with the BODY now */
3888 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3889
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3890 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3891 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3892 /* we detected a parsing error. We want to archive this request
3893 * in the dedicated proxy area for later troubleshooting.
3894 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3895 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]3896 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3897
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3898 txn->req.msg_state = HTTP_MSG_ERROR;
3899 txn->status = 400;
3900 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3901 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3902
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3903 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3904 if (s->listener->counters)
3905 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3906
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3907 if (!(s->flags & SN_ERR_MASK))
3908 s->flags |= SN_ERR_PRXCOND;
3909 if (!(s->flags & SN_FINST_MASK))
3910 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3911 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3912}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3913
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3914/* This function is an analyser which processes the HTTP tarpit. It always
3915 * returns zero, at the beginning because it prevents any other processing
3916 * from occurring, and at the end because it terminates the request.
3917 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3918int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3919{
3920 struct http_txn *txn = &s->txn;
3921
3922 /* This connection is being tarpitted. The CLIENT side has
3923 * already set the connect expiration date to the right
3924 * timeout. We just have to check that the client is still
3925 * there and that the timeout has not expired.
3926 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3927 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3928 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3929 !tick_is_expired(req->analyse_exp, now_ms))
3930 return 0;
3931
3932 /* We will set the queue timer to the time spent, just for
3933 * logging purposes. We fake a 500 server error, so that the
3934 * attacker will not suspect his connection has been tarpitted.
3935 * It will not cause trouble to the logs because we can exclude
3936 * the tarpitted connections by filtering on the 'PT' status flags.
3937 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3938 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3939
3940 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3941 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3942 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3943
3944 req->analysers = 0;
3945 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3946
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3947 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3948 if (s->listener->counters)
3949 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3950
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3951 if (!(s->flags & SN_ERR_MASK))
3952 s->flags |= SN_ERR_PRXCOND;
3953 if (!(s->flags & SN_FINST_MASK))
3954 s->flags |= SN_FINST_T;
3955 return 0;
3956}
3957
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3958/* This function is an analyser which processes the HTTP request body. It looks
3959 * for parameters to be used for the load balancing algorithm (url_param). It
3960 * must only be called after the standard HTTP request processing has occurred,
3961 * because it expects the request to be parsed. It returns zero if it needs to
3962 * read more data, or 1 once it has completed its analysis.
3963 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3964int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3965{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3966 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3967 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3968 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3969
3970 /* We have to parse the HTTP request body to find any required data.
3971 * "balance url_param check_post" should have been the only way to get
3972 * into this. We were brought here after HTTP header analysis, so all
3973 * related structures are ready.
3974 */
3975
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3976 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3977 goto missing_data;
3978
3979 if (msg->msg_state < HTTP_MSG_100_SENT) {
3980 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3981 * send an HTTP/1.1 100 Continue intermediate response.
3982 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3983 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3984 struct hdr_ctx ctx;
3985 ctx.idx = 0;
3986 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3987 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3988 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3989 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3990 }
3991 }
3992 msg->msg_state = HTTP_MSG_100_SENT;
3993 }
3994
3995 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3996 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3997 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3998 * is still null. We must save the body in msg->next because it
3999 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4000 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4001 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4002
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4003 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4004 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4005 else
4006 msg->msg_state = HTTP_MSG_DATA;
4007 }
4008
4009 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4010 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4011 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4012 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4013 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4014 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4015
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4016 if (!ret)
4017 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4018 else if (ret < 0) {
4019 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4020 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4021 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4022 }
4023
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4024 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4025 * We have the first data byte is in msg->sov. We're waiting for at
4026 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4027 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4028
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4029 if (msg->body_len < limit)
4030 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4031
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4032 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4033 goto http_end;
4034
4035 missing_data:
4036 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4037 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4038 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4039 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4040 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4041
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4042 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4043 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4044 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4045
4046 if (!(s->flags & SN_ERR_MASK))
4047 s->flags |= SN_ERR_CLITO;
4048 if (!(s->flags & SN_FINST_MASK))
4049 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4050 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4051 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4052
4053 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4054 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]4055 /* Not enough data. We'll re-use the http-request
4056 * timeout here. Ideally, we should set the timeout
4057 * relative to the accept() date. We just set the
4058 * request timeout once at the beginning of the
4059 * request.
4060 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4061 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4062 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4063 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4064 return 0;
4065 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4066
4067 http_end:
4068 /* The situation will not evolve, so let's give up on the analysis. */
4069 s->logs.tv_request = now; /* update the request timer to reflect full request */
4070 req->analysers &= ~an_bit;
4071 req->analyse_exp = TICK_ETERNITY;
4072 return 1;
4073
4074 return_bad_req: /* let's centralize all bad requests */
4075 txn->req.msg_state = HTTP_MSG_ERROR;
4076 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4077 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4078
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4079 if (!(s->flags & SN_ERR_MASK))
4080 s->flags |= SN_ERR_PRXCOND;
4081 if (!(s->flags & SN_FINST_MASK))
4082 s->flags |= SN_FINST_R;
4083
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4084 return_err_msg:
4085 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4086 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4087 if (s->listener->counters)
4088 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4089 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4090}
4091
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4092/* send a server's name with an outgoing request over an established connection.
4093 * Note: this function is designed to be called once the request has been scheduled
4094 * for being forwarded. This is the reason why it rewinds the buffer before
4095 * proceeding.
4096 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4097int 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]4098
4099 struct hdr_ctx ctx;
4100
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4101 char *hdr_name = be->server_id_hdr_name;
4102 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4103 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4104 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4105 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4106
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4107 ctx.idx = 0;
4108
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4109 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4110 if (old_o) {
4111 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4112 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4113 }
4114
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4115 old_i = chn->buf->i;
4116 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]4117 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4118 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4119 }
4120
4121 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4122 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4123 memcpy(hdr_val, hdr_name, hdr_name_len);
4124 hdr_val += hdr_name_len;
4125 *hdr_val++ = ':';
4126 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4127 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4128 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]4129
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4130 if (old_o) {
4131 /* If this was a forwarded request, we must readjust the amount of
4132 * data to be forwarded in order to take into account the size
4133 * variations.
4134 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4135 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4136 }
4137
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4138 return 0;
4139}
4140
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4141/* Terminate current transaction and prepare a new one. This is very tricky
4142 * right now but it works.
4143 */
4144void http_end_txn_clean_session(struct session *s)
4145{
4146 /* FIXME: We need a more portable way of releasing a backend's and a
4147 * server's connections. We need a safer way to reinitialize buffer
4148 * flags. We also need a more accurate method for computing per-request
4149 * data.
4150 */
4151 http_silent_debug(__LINE__, s);
4152
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4153 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4154 si_shutr(s->req->cons);
4155 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4156
4157 http_silent_debug(__LINE__, s);
4158
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4159 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4160 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4161 if (unlikely(s->srv_conn))
4162 sess_change_server(s, NULL);
4163 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4164
4165 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4166 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4167 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4168
4169 if (s->txn.status) {
4170 int n;
4171
4172 n = s->txn.status / 100;
4173 if (n < 1 || n > 5)
4174 n = 0;
4175
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4176 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4177 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4178 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4179 s->fe->fe_counters.p.http.comp_rsp++;
4180 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4181 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4182 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4183 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4184 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4185 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4186 s->be->be_counters.p.http.comp_rsp++;
4187 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4188 }
4189
4190 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4191 s->logs.bytes_in -= s->req->buf->i;
4192 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4193
4194 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4195 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4196 !(s->flags & SN_MONITOR) &&
4197 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4198 s->do_log(s);
4199 }
4200
4201 s->logs.accept_date = date; /* user-visible date for logging */
4202 s->logs.tv_accept = now; /* corrected date for internal use */
4203 tv_zero(&s->logs.tv_request);
4204 s->logs.t_queue = -1;
4205 s->logs.t_connect = -1;
4206 s->logs.t_data = -1;
4207 s->logs.t_close = 0;
4208 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4209 s->logs.srv_queue_size = 0; /* we will get this number soon */
4210
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4211 s->logs.bytes_in = s->req->total = s->req->buf->i;
4212 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4213
4214 if (s->pend_pos)
4215 pendconn_free(s->pend_pos);
4216
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4217 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4218 if (s->flags & SN_CURR_SESS) {
4219 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4220 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4221 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4222 if (may_dequeue_tasks(objt_server(s->target), s->be))
4223 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4224 }
4225
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4226 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4227
4228 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4229 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4230 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4231 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4232 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4233 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4234 s->req->cons->err_loc = NULL;
4235 s->req->cons->exp = TICK_ETERNITY;
4236 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4237 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4238 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]4239 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]4240 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4241
4242 if (s->flags & SN_COMP_READY)
4243 s->comp_algo->end(&s->comp_ctx);
4244 s->comp_algo = NULL;
4245 s->flags &= ~SN_COMP_READY;
4246
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4247 s->txn.meth = 0;
4248 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4249 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4250 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4251 s->req->cons->flags |= SI_FL_INDEP_STR;
4252
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4253 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4254 s->req->flags |= CF_NEVER_WAIT;
4255 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4256 }
4257
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4258 /* if the request buffer is not empty, it means we're
4259 * about to process another request, so send pending
4260 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4261 * Just don't do this if the buffer is close to be full,
4262 * because the request will wait for it to flush a little
4263 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4264 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4265 if (s->req->buf->i) {
4266 if (s->rep->buf->o &&
4267 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4268 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]4269 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4270 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4271
4272 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4273 channel_auto_read(s->req);
4274 channel_auto_close(s->req);
4275 channel_auto_read(s->rep);
4276 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4277
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4278 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4279 s->rep->analysers = 0;
4280
4281 http_silent_debug(__LINE__, s);
4282}
4283
4284
4285/* This function updates the request state machine according to the response
4286 * state machine and buffer flags. It returns 1 if it changes anything (flag
4287 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4288 * it is only used to find when a request/response couple is complete. Both
4289 * this function and its equivalent should loop until both return zero. It
4290 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4291 */
4292int http_sync_req_state(struct session *s)
4293{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4294 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4295 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4296 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4297 unsigned int old_state = txn->req.msg_state;
4298
4299 http_silent_debug(__LINE__, s);
4300 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4301 return 0;
4302
4303 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4304 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4305 * We can shut the read side unless we want to abort_on_close,
4306 * or we have a POST request. The issue with POST requests is
4307 * that some browsers still send a CRLF after the request, and
4308 * this CRLF must be read so that it does not remain in the kernel
4309 * buffers, otherwise a close could cause an RST on some systems
4310 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4311 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4312 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4313 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4314
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4315 /* if the server closes the connection, we want to immediately react
4316 * and close the socket to save packets and syscalls.
4317 */
4318 chn->cons->flags |= SI_FL_NOHALF;
4319
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4320 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4321 goto wait_other_side;
4322
4323 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4324 /* The server has not finished to respond, so we
4325 * don't want to move in order not to upset it.
4326 */
4327 goto wait_other_side;
4328 }
4329
4330 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4331 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4332 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4333 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4334 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4335 goto wait_other_side;
4336 }
4337
4338 /* When we get here, it means that both the request and the
4339 * response have finished receiving. Depending on the connection
4340 * mode, we'll have to wait for the last bytes to leave in either
4341 * direction, and sometimes for a close to be effective.
4342 */
4343
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4344 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4345 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4346 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4347 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4348 }
4349 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4350 /* Option forceclose is set, or either side wants to close,
4351 * let's enforce it now that we're not expecting any new
4352 * data to come. The caller knows the session is complete
4353 * once both states are CLOSED.
4354 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4355 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4356 channel_shutr_now(chn);
4357 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4358 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4359 }
4360 else {
4361 /* The last possible modes are keep-alive and tunnel. Since tunnel
4362 * mode does not set the body analyser, we can't reach this place
4363 * in tunnel mode, so we're left with keep-alive only.
4364 * This mode is currently not implemented, we switch to tunnel mode.
4365 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4366 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4367 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4368 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4369 }
4370
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4371 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4372 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4373 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4374
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4375 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4376 txn->req.msg_state = HTTP_MSG_CLOSING;
4377 goto http_msg_closing;
4378 }
4379 else {
4380 txn->req.msg_state = HTTP_MSG_CLOSED;
4381 goto http_msg_closed;
4382 }
4383 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4384 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4385 }
4386
4387 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4388 http_msg_closing:
4389 /* nothing else to forward, just waiting for the output buffer
4390 * to be empty and for the shutw_now to take effect.
4391 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4392 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4393 txn->req.msg_state = HTTP_MSG_CLOSED;
4394 goto http_msg_closed;
4395 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4396 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4397 txn->req.msg_state = HTTP_MSG_ERROR;
4398 goto wait_other_side;
4399 }
4400 }
4401
4402 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4403 http_msg_closed:
4404 goto wait_other_side;
4405 }
4406
4407 wait_other_side:
4408 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4409 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4410}
4411
4412
4413/* This function updates the response state machine according to the request
4414 * state machine and buffer flags. It returns 1 if it changes anything (flag
4415 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4416 * it is only used to find when a request/response couple is complete. Both
4417 * this function and its equivalent should loop until both return zero. It
4418 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4419 */
4420int http_sync_res_state(struct session *s)
4421{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4422 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4423 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4424 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4425 unsigned int old_state = txn->rsp.msg_state;
4426
4427 http_silent_debug(__LINE__, s);
4428 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4429 return 0;
4430
4431 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4432 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4433 * still monitor the server connection for a possible close
4434 * while the request is being uploaded, so we don't disable
4435 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4436 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4437 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4438
4439 if (txn->req.msg_state == HTTP_MSG_ERROR)
4440 goto wait_other_side;
4441
4442 if (txn->req.msg_state < HTTP_MSG_DONE) {
4443 /* The client seems to still be sending data, probably
4444 * because we got an error response during an upload.
4445 * We have the choice of either breaking the connection
4446 * or letting it pass through. Let's do the later.
4447 */
4448 goto wait_other_side;
4449 }
4450
4451 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4452 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4453 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4454 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4455 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4456 goto wait_other_side;
4457 }
4458
4459 /* When we get here, it means that both the request and the
4460 * response have finished receiving. Depending on the connection
4461 * mode, we'll have to wait for the last bytes to leave in either
4462 * direction, and sometimes for a close to be effective.
4463 */
4464
4465 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4466 /* Server-close mode : shut read and wait for the request
4467 * side to close its output buffer. The caller will detect
4468 * when we're in DONE and the other is in CLOSED and will
4469 * catch that for the final cleanup.
4470 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4471 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4472 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4473 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4474 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4475 /* Option forceclose is set, or either side wants to close,
4476 * let's enforce it now that we're not expecting any new
4477 * data to come. The caller knows the session is complete
4478 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4479 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4480 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4481 channel_shutr_now(chn);
4482 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4483 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4484 }
4485 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4486 /* The last possible modes are keep-alive and tunnel. Since tunnel
4487 * mode does not set the body analyser, we can't reach this place
4488 * in tunnel mode, so we're left with keep-alive only.
4489 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4490 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4491 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4492 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4493 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4494 }
4495
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4496 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4497 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4498 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4499 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4500 goto http_msg_closing;
4501 }
4502 else {
4503 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4504 goto http_msg_closed;
4505 }
4506 }
4507 goto wait_other_side;
4508 }
4509
4510 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4511 http_msg_closing:
4512 /* nothing else to forward, just waiting for the output buffer
4513 * to be empty and for the shutw_now to take effect.
4514 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4515 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4516 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4517 goto http_msg_closed;
4518 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4519 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4520 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4521 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4522 if (objt_server(s->target))
4523 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4524 goto wait_other_side;
4525 }
4526 }
4527
4528 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4529 http_msg_closed:
4530 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4531 bi_erase(chn);
4532 channel_auto_close(chn);
4533 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4534 goto wait_other_side;
4535 }
4536
4537 wait_other_side:
4538 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4539 /* We force the response to leave immediately if we're waiting for the
4540 * other side, since there is no pending shutdown to push it out.
4541 */
4542 if (!channel_is_empty(chn))
4543 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4544 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4545}
4546
4547
4548/* Resync the request and response state machines. Return 1 if either state
4549 * changes.
4550 */
4551int http_resync_states(struct session *s)
4552{
4553 struct http_txn *txn = &s->txn;
4554 int old_req_state = txn->req.msg_state;
4555 int old_res_state = txn->rsp.msg_state;
4556
4557 http_silent_debug(__LINE__, s);
4558 http_sync_req_state(s);
4559 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4560 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4561 if (!http_sync_res_state(s))
4562 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4563 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4564 if (!http_sync_req_state(s))
4565 break;
4566 }
4567 http_silent_debug(__LINE__, s);
4568 /* OK, both state machines agree on a compatible state.
4569 * There are a few cases we're interested in :
4570 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4571 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4572 * directions, so let's simply disable both analysers.
4573 * - HTTP_MSG_CLOSED on the response only means we must abort the
4574 * request.
4575 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4576 * with server-close mode means we've completed one request and we
4577 * must re-initialize the server connection.
4578 */
4579
4580 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4581 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4582 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4583 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4584 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4585 channel_auto_close(s->req);
4586 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4587 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4588 channel_auto_close(s->rep);
4589 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4590 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4591 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4592 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4593 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4594 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4595 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4596 channel_auto_close(s->rep);
4597 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4598 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4599 channel_abort(s->req);
4600 channel_auto_close(s->req);
4601 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4602 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4603 }
4604 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4605 txn->rsp.msg_state == HTTP_MSG_DONE &&
4606 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4607 /* server-close: terminate this server connection and
4608 * reinitialize a fresh-new transaction.
4609 */
4610 http_end_txn_clean_session(s);
4611 }
4612
4613 http_silent_debug(__LINE__, s);
4614 return txn->req.msg_state != old_req_state ||
4615 txn->rsp.msg_state != old_res_state;
4616}
4617
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4618/* This function is an analyser which forwards request body (including chunk
4619 * sizes if any). It is called as soon as we must forward, even if we forward
4620 * zero byte. The only situation where it must not be called is when we're in
4621 * tunnel mode and we want to forward till the close. It's used both to forward
4622 * remaining data and to resync after end of body. It expects the msg_state to
4623 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4624 * 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]4625 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4626 * bytes of pending data + the headers if not already done (between sol and sov).
4627 * 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]4628 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4629int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4630{
4631 struct http_txn *txn = &s->txn;
4632 struct http_msg *msg = &s->txn.req;
4633
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4634 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4635 return 0;
4636
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4637 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]4638 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4639 /* Output closed while we were sending data. We must abort and
4640 * wake the other side up.
4641 */
4642 msg->msg_state = HTTP_MSG_ERROR;
4643 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4644 return 1;
4645 }
4646
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4647 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4648 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4649
4650 /* Note that we don't have to send 100-continue back because we don't
4651 * need the data to complete our job, and it's up to the server to
4652 * decide whether to return 100, 417 or anything else in return of
4653 * an "Expect: 100-continue" header.
4654 */
4655
4656 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4657 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4658 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4659 * is still null. We must save the body in msg->next because it
4660 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4661 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4662 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4663
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4664 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4665 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4666 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4667 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4668 }
4669
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4670 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4671 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4672
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4673 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4674 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4675 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4676 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4677 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4678 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4679 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4680 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4681 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4682
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4683 if (msg->msg_state == HTTP_MSG_DATA) {
4684 /* must still forward */
4685 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4686 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4687
4688 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4689 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4690 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4691 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4692 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4693 }
4694 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4695 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4696 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4697 * TRAILERS state.
4698 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4699 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4700
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4701 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4702 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4703 else if (ret < 0) {
4704 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4705 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4706 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]4707 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4708 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4709 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4710 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4711 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4712 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4713 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4714
4715 if (ret == 0)
4716 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4717 else if (ret < 0) {
4718 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4719 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4720 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]4721 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4722 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4723 /* we're in MSG_CHUNK_SIZE now */
4724 }
4725 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4726 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4727
4728 if (ret == 0)
4729 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4730 else if (ret < 0) {
4731 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4732 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4733 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]4734 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4735 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4736 /* we're in HTTP_MSG_DONE now */
4737 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4738 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4739 int old_state = msg->msg_state;
4740
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4741 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4742 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4743 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4744 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4745 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4746 if (http_resync_states(s)) {
4747 /* some state changes occurred, maybe the analyser
4748 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4749 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4750 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4751 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4752 /* request errors are most likely due to
4753 * the server aborting the transfer.
4754 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4755 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4756 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4757 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4758 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4759 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4760 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4761 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4762 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4763
4764 /* If "option abortonclose" is set on the backend, we
4765 * want to monitor the client's connection and forward
4766 * any shutdown notification to the server, which will
4767 * decide whether to close or to go on processing the
4768 * request.
4769 */
4770 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4771 channel_auto_read(req);
4772 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4773 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4774 else if (s->txn.meth == HTTP_METH_POST) {
4775 /* POST requests may require to read extra CRLF
4776 * sent by broken browsers and which could cause
4777 * an RST to be sent upon close on some systems
4778 * (eg: Linux).
4779 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4780 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4781 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4782
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4783 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4784 }
4785 }
4786
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4787 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4788 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4789 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4790 if (!(s->flags & SN_ERR_MASK))
4791 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4792 if (!(s->flags & SN_FINST_MASK)) {
4793 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4794 s->flags |= SN_FINST_H;
4795 else
4796 s->flags |= SN_FINST_D;
4797 }
4798
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4799 s->fe->fe_counters.cli_aborts++;
4800 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4801 if (objt_server(s->target))
4802 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4803
4804 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4805 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4806
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4807 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4808 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4809 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4810
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4811 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4812 * 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]4813 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4814 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4815 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4816
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4817 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4818 * 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]4819 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4820 * modes are already handled by the stream sock layer. We must not do
4821 * this in content-length mode because it could present the MSG_MORE
4822 * flag with the last block of forwarded data, which would cause an
4823 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4824 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4825 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4826 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4827
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4828 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4829 return 0;
4830
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4831 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4832 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4833 if (s->listener->counters)
4834 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4835 return_bad_req_stats_ok:
4836 txn->req.msg_state = HTTP_MSG_ERROR;
4837 if (txn->status) {
4838 /* Note: we don't send any error if some data were already sent */
4839 stream_int_retnclose(req->prod, NULL);
4840 } else {
4841 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4842 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4843 }
4844 req->analysers = 0;
4845 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]4846
4847 if (!(s->flags & SN_ERR_MASK))
4848 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4849 if (!(s->flags & SN_FINST_MASK)) {
4850 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4851 s->flags |= SN_FINST_H;
4852 else
4853 s->flags |= SN_FINST_D;
4854 }
4855 return 0;
4856
4857 aborted_xfer:
4858 txn->req.msg_state = HTTP_MSG_ERROR;
4859 if (txn->status) {
4860 /* Note: we don't send any error if some data were already sent */
4861 stream_int_retnclose(req->prod, NULL);
4862 } else {
4863 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4864 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4865 }
4866 req->analysers = 0;
4867 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4868
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4869 s->fe->fe_counters.srv_aborts++;
4870 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4871 if (objt_server(s->target))
4872 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4873
4874 if (!(s->flags & SN_ERR_MASK))
4875 s->flags |= SN_ERR_SRVCL;
4876 if (!(s->flags & SN_FINST_MASK)) {
4877 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4878 s->flags |= SN_FINST_H;
4879 else
4880 s->flags |= SN_FINST_D;
4881 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4882 return 0;
4883}
4884
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4885/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4886 * processing can continue on next analysers, or zero if it either needs more
4887 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4888 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4889 * when it has nothing left to do, and may remove any analyser when it wants to
4890 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4891 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4892int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4893{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4894 struct http_txn *txn = &s->txn;
4895 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4896 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4897 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4898 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4899 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4900
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4901 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]4902 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4903 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4904 rep,
4905 rep->rex, rep->wex,
4906 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4907 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4908 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4909
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4910 /*
4911 * Now parse the partial (or complete) lines.
4912 * We will check the response syntax, and also join multi-line
4913 * headers. An index of all the lines will be elaborated while
4914 * parsing.
4915 *
4916 * For the parsing, we use a 28 states FSM.
4917 *
4918 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4919 * rep->buf->p = beginning of response
4920 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4921 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4922 * msg->eol = end of current header or line (LF or CRLF)
4923 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4924 */
4925
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4926 /* There's a protected area at the end of the buffer for rewriting
4927 * purposes. We don't want to start to parse the request if the
4928 * protected area is affected, because we may have to move processed
4929 * data later, which is much more complicated.
4930 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4931 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4932 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4933 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4934 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4935 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4936 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4937 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4938 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4939 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4940 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4941 return 0;
4942 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4943 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4944 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4945 }
4946
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4947 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4948 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4949 }
4950
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4951 /* 1: we might have to print this header in debug mode */
4952 if (unlikely((global.mode & MODE_DEBUG) &&
4953 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4954 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4955 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4956
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4957 sol = rep->buf->p;
4958 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4959 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4960
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4961 sol += hdr_idx_first_pos(&txn->hdr_idx);
4962 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4963
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4964 while (cur_idx) {
4965 eol = sol + txn->hdr_idx.v[cur_idx].len;
4966 debug_hdr("srvhdr", s, sol, eol);
4967 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4968 cur_idx = txn->hdr_idx.v[cur_idx].next;
4969 }
4970 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4971
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4972 /*
4973 * Now we quickly check if we have found a full valid response.
4974 * If not so, we check the FD and buffer states before leaving.
4975 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4976 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4977 * responses are checked first.
4978 *
4979 * Depending on whether the client is still there or not, we
4980 * may send an error response back or not. Note that normally
4981 * we should only check for HTTP status there, and check I/O
4982 * errors somewhere else.
4983 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4984
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4985 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4986 /* Invalid response */
4987 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4988 /* we detected a parsing error. We want to archive this response
4989 * in the dedicated proxy area for later troubleshooting.
4990 */
4991 hdr_response_bad:
4992 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4993 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]4994
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4995 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4996 if (objt_server(s->target)) {
4997 objt_server(s->target)->counters.failed_resp++;
4998 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4999 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5000 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5001 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5002 rep->analysers = 0;
5003 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5004 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5005 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5006 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5007
5008 if (!(s->flags & SN_ERR_MASK))
5009 s->flags |= SN_ERR_PRXCOND;
5010 if (!(s->flags & SN_FINST_MASK))
5011 s->flags |= SN_FINST_H;
5012
5013 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5014 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5015
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5016 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5017 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5018 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5019 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5020 goto hdr_response_bad;
5021 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5022
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5023 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5024 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5025 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5026 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]5027
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5028 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5029 if (objt_server(s->target)) {
5030 objt_server(s->target)->counters.failed_resp++;
5031 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5032 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5033
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5034 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5035 rep->analysers = 0;
5036 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5037 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5038 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5039 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5040
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5041 if (!(s->flags & SN_ERR_MASK))
5042 s->flags |= SN_ERR_SRVCL;
5043 if (!(s->flags & SN_FINST_MASK))
5044 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5045 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5046 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5047
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5048 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5049 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5050 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5051 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]5052
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5053 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5054 if (objt_server(s->target)) {
5055 objt_server(s->target)->counters.failed_resp++;
5056 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5057 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5058
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5059 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5060 rep->analysers = 0;
5061 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5062 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5063 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5064 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5065
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5066 if (!(s->flags & SN_ERR_MASK))
5067 s->flags |= SN_ERR_SRVTO;
5068 if (!(s->flags & SN_FINST_MASK))
5069 s->flags |= SN_FINST_H;
5070 return 0;
5071 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5072
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5073 /* client abort with an abortonclose */
5074 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5075 s->fe->fe_counters.cli_aborts++;
5076 s->be->be_counters.cli_aborts++;
5077 if (objt_server(s->target))
5078 objt_server(s->target)->counters.cli_aborts++;
5079
5080 rep->analysers = 0;
5081 channel_auto_close(rep);
5082
5083 txn->status = 400;
5084 bi_erase(rep);
5085 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5086
5087 if (!(s->flags & SN_ERR_MASK))
5088 s->flags |= SN_ERR_CLICL;
5089 if (!(s->flags & SN_FINST_MASK))
5090 s->flags |= SN_FINST_H;
5091
5092 /* process_session() will take care of the error */
5093 return 0;
5094 }
5095
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5096 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5097 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5098 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5099 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]5100
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5101 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5102 if (objt_server(s->target)) {
5103 objt_server(s->target)->counters.failed_resp++;
5104 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5105 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5106
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5107 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5108 rep->analysers = 0;
5109 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5110 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5111 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5112 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5113
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5114 if (!(s->flags & SN_ERR_MASK))
5115 s->flags |= SN_ERR_SRVCL;
5116 if (!(s->flags & SN_FINST_MASK))
5117 s->flags |= SN_FINST_H;
5118 return 0;
5119 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5120
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5121 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5122 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5123 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5124 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]5125
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5126 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5127 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5128 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5129
5130 if (!(s->flags & SN_ERR_MASK))
5131 s->flags |= SN_ERR_CLICL;
5132 if (!(s->flags & SN_FINST_MASK))
5133 s->flags |= SN_FINST_H;
5134
5135 /* process_session() will take care of the error */
5136 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5137 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5138
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5139 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5140 return 0;
5141 }
5142
5143 /* More interesting part now : we know that we have a complete
5144 * response which at least looks like HTTP. We have an indicator
5145 * of each header's length, so we can parse them quickly.
5146 */
5147
5148 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5149 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]5150
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5151 /*
5152 * 1: get the status code
5153 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5154 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5155 if (n < 1 || n > 5)
5156 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5157 /* when the client triggers a 4xx from the server, it's most often due
5158 * to a missing object or permission. These events should be tracked
5159 * because if they happen often, it may indicate a brute force or a
5160 * vulnerability scan.
5161 */
5162 if (n == 4)
5163 session_inc_http_err_ctr(s);
5164
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5165 if (objt_server(s->target))
5166 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5167
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5168 /* check if the response is HTTP/1.1 or above */
5169 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5170 ((rep->buf->p[5] > '1') ||
5171 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5172 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5173
5174 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5175 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]5176
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5177 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5178 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5179
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5180 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]5181
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5182 /* Adjust server's health based on status code. Note: status codes 501
5183 * and 505 are triggered on demand by client request, so we must not
5184 * count them as server failures.
5185 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5186 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5187 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5188 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5189 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5190 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5191 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5192
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5193 /*
5194 * 2: check for cacheability.
5195 */
5196
5197 switch (txn->status) {
5198 case 200:
5199 case 203:
5200 case 206:
5201 case 300:
5202 case 301:
5203 case 410:
5204 /* RFC2616 @13.4:
5205 * "A response received with a status code of
5206 * 200, 203, 206, 300, 301 or 410 MAY be stored
5207 * by a cache (...) unless a cache-control
5208 * directive prohibits caching."
5209 *
5210 * RFC2616 @9.5: POST method :
5211 * "Responses to this method are not cacheable,
5212 * unless the response includes appropriate
5213 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5214 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5215 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5216 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5217 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5218 break;
5219 default:
5220 break;
5221 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5222
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5223 /*
5224 * 3: we may need to capture headers
5225 */
5226 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5227 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5228 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5229 txn->rsp.cap, s->fe->rsp_cap);
5230
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5231 /* 4: determine the transfer-length.
5232 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5233 * the presence of a message-body in a RESPONSE and its transfer length
5234 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5235 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5236 * All responses to the HEAD request method MUST NOT include a
5237 * message-body, even though the presence of entity-header fields
5238 * might lead one to believe they do. All 1xx (informational), 204
5239 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5240 * message-body. All other responses do include a message-body,
5241 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5242 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5243 * 1. Any response which "MUST NOT" include a message-body (such as the
5244 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5245 * always terminated by the first empty line after the header fields,
5246 * regardless of the entity-header fields present in the message.
5247 *
5248 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5249 * the "chunked" transfer-coding (Section 6.2) is used, the
5250 * transfer-length is defined by the use of this transfer-coding.
5251 * If a Transfer-Encoding header field is present and the "chunked"
5252 * transfer-coding is not present, the transfer-length is defined by
5253 * the sender closing the connection.
5254 *
5255 * 3. If a Content-Length header field is present, its decimal value in
5256 * OCTETs represents both the entity-length and the transfer-length.
5257 * If a message is received with both a Transfer-Encoding header
5258 * field and a Content-Length header field, the latter MUST be ignored.
5259 *
5260 * 4. If the message uses the media type "multipart/byteranges", and
5261 * the transfer-length is not otherwise specified, then this self-
5262 * delimiting media type defines the transfer-length. This media
5263 * type MUST NOT be used unless the sender knows that the recipient
5264 * can parse it; the presence in a request of a Range header with
5265 * multiple byte-range specifiers from a 1.1 client implies that the
5266 * client can parse multipart/byteranges responses.
5267 *
5268 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5269 */
5270
5271 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5272 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5273 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5274 * FIXME: should we parse anyway and return an error on chunked encoding ?
5275 */
5276 if (txn->meth == HTTP_METH_HEAD ||
5277 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5278 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5279 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5280 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5281 goto skip_content_length;
5282 }
5283
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5284 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5285 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5286 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5287 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5288 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5289 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5290 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5291 /* bad transfer-encoding (chunked followed by something else) */
5292 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5293 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5294 break;
5295 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5296 }
5297
5298 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5299 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5300 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5301 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5302 signed long long cl;
5303
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5304 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5305 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5306 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5307 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5308
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5309 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5310 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5311 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5312 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5313
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5314 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5315 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5316 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5317 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5318
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5319 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5320 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5321 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5322 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5323
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5324 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5325 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5326 }
5327
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5328 if (s->fe->comp || s->be->comp)
5329 select_compression_response_header(s, rep->buf);
5330
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5331 /* FIXME: we should also implement the multipart/byterange method.
5332 * For now on, we resort to close mode in this case (unknown length).
5333 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5334skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5335
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5336 /* end of job, return OK */
5337 rep->analysers &= ~an_bit;
5338 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5339 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5340 return 1;
5341}
5342
5343/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5344 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5345 * and updates t->rep->analysers. It might make sense to explode it into several
5346 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5347 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5348int 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]5349{
5350 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5351 struct http_msg *msg = &txn->rsp;
5352 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5353 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5354
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5355 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]5356 now_ms, __FUNCTION__,
5357 t,
5358 rep,
5359 rep->rex, rep->wex,
5360 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5361 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5362 rep->analysers);
5363
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5364 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5365 return 0;
5366
5367 rep->analysers &= ~an_bit;
5368 rep->analyse_exp = TICK_ETERNITY;
5369
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5370 /* Now we have to check if we need to modify the Connection header.
5371 * This is more difficult on the response than it is on the request,
5372 * because we can have two different HTTP versions and we don't know
5373 * how the client will interprete a response. For instance, let's say
5374 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5375 * HTTP/1.1 response without any header. Maybe it will bound itself to
5376 * HTTP/1.0 because it only knows about it, and will consider the lack
5377 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5378 * the lack of header as a keep-alive. Thus we will use two flags
5379 * indicating how a request MAY be understood by the client. In case
5380 * of multiple possibilities, we'll fix the header to be explicit. If
5381 * ambiguous cases such as both close and keepalive are seen, then we
5382 * will fall back to explicit close. Note that we won't take risks with
5383 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5384 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5385 */
5386
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5387 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5388 txn->status == 101)) {
5389 /* Either we've established an explicit tunnel, or we're
5390 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5391 * to understand the next protocols. We have to switch to tunnel
5392 * mode, so that we transfer the request and responses then let
5393 * this protocol pass unmodified. When we later implement specific
5394 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5395 * header which contains information about that protocol for
5396 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5397 */
5398 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5399 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5400 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5401 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5402 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5403 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5404
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5405 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5406 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5407 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5408 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5409
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5410 /* now adjust header transformations depending on current state */
5411 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5412 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5413 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5414 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5415 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5416 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5417 else { /* SCL / KAL */
5418 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5419 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5420 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5421 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5422
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5423 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5424 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5425
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5426 /* Some keep-alive responses are converted to Server-close if
5427 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5428 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5429 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5430 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5431 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5432 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5433 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5434 }
5435
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5436 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5437 /*
5438 * 3: we will have to evaluate the filters.
5439 * As opposed to version 1.2, now they will be evaluated in the
5440 * filters order and not in the header order. This means that
5441 * each filter has to be validated among all headers.
5442 *
5443 * Filters are tried with ->be first, then with ->fe if it is
5444 * different from ->be.
5445 */
5446
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5447 cur_proxy = t->be;
5448 while (1) {
5449 struct proxy *rule_set = cur_proxy;
5450
5451 /* try headers filters */
5452 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5453 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5454 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5455 if (objt_server(t->target)) {
5456 objt_server(t->target)->counters.failed_resp++;
5457 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5458 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5459 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5460 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5461 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5462 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5463 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5464 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5465 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5466 if (!(t->flags & SN_ERR_MASK))
5467 t->flags |= SN_ERR_PRXCOND;
5468 if (!(t->flags & SN_FINST_MASK))
5469 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5470 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5471 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5472 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5473
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5474 /* has the response been denied ? */
5475 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5476 if (objt_server(t->target))
5477 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5478
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5479 t->be->be_counters.denied_resp++;
5480 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5481 if (t->listener->counters)
5482 t->listener->counters->denied_resp++;
5483
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5484 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5485 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5486
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5487 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5488 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5489 if (txn->status < 200)
5490 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5491 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5492 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]5493 ret = acl_pass(ret);
5494 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5495 ret = !ret;
5496 if (!ret)
5497 continue;
5498 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5499 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5500 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5501 }
5502
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5503 /* check whether we're already working on the frontend */
5504 if (cur_proxy == t->fe)
5505 break;
5506 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5507 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5508
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5509 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5510 * We may be facing a 100-continue response, in which case this
5511 * is not the right response, and we're waiting for the next one.
5512 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5513 * next one.
5514 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5515 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5516 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5517 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5518 msg->msg_state = HTTP_MSG_RPBEFORE;
5519 txn->status = 0;
5520 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5521 return 1;
5522 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5523 else if (unlikely(txn->status < 200))
5524 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5525
5526 /* we don't have any 1xx status code now */
5527
5528 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5529 * 4: check for server cookie.
5530 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5531 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5532 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5533 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5534
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5535
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5536 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5537 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5538 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5539 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]5540 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5541
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5542 /*
5543 * 6: add server cookie in the response if needed
5544 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5545 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5546 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5547 (!(t->flags & SN_DIRECT) ||
5548 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5549 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5550 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5551 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5552 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5553 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5554 /* the server is known, it's not the one the client requested, or the
5555 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5556 * insert a set-cookie here, except if we want to insert only on POST
5557 * requests and this one isn't. Note that servers which don't have cookies
5558 * (eg: some backup servers) will return a full cookie removal request.
5559 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5560 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5561 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5562 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5563 t->be->cookie_name);
5564 }
5565 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5566 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]5567
5568 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5569 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5570 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5571 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5572 trash.len += 5;
5573
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5574 if (t->be->cookie_maxlife) {
5575 /* emit first_date, which is either the original one or
5576 * the current date.
5577 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5578 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5579 s30tob64(txn->cookie_first_date ?
5580 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5581 (date.tv_sec+3) >> 2, trash.str + trash.len);
5582 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5583 }
5584 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5585 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5586 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5587
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5588 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5589 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5590
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5591 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5592 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5593
5594 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5595 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5596
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5597 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]5598 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5599
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5600 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5601 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5602 /* the server did not change, only the date was updated */
5603 txn->flags |= TX_SCK_UPDATED;
5604 else
5605 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5606
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5607 /* Here, we will tell an eventual cache on the client side that we don't
5608 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5609 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5610 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5611 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5612 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5613
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5614 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5615
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5616 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5617 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5618 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5619 }
5620 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5621
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5622 /*
5623 * 7: check if result will be cacheable with a cookie.
5624 * We'll block the response if security checks have caught
5625 * nasty things such as a cacheable cookie.
5626 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5627 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5628 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5629 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5630
5631 /* we're in presence of a cacheable response containing
5632 * a set-cookie header. We'll block it as requested by
5633 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5634 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5635 if (objt_server(t->target))
5636 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5637
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5638 t->be->be_counters.denied_resp++;
5639 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5640 if (t->listener->counters)
5641 t->listener->counters->denied_resp++;
5642
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5643 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5644 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5645 send_log(t->be, LOG_ALERT,
5646 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5647 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5648 goto return_srv_prx_502;
5649 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5650
5651 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5652 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5653 * If an "Upgrade" token is found, the header is left untouched in order
5654 * not to have to deal with some client bugs : some of them fail an upgrade
5655 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5656 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5657 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5658 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5659 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5660 unsigned int want_flags = 0;
5661
5662 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5663 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5664 /* we want a keep-alive response here. Keep-alive header
5665 * required if either side is not 1.1.
5666 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5667 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5668 want_flags |= TX_CON_KAL_SET;
5669 }
5670 else {
5671 /* we want a close response here. Close header required if
5672 * the server is 1.1, regardless of the client.
5673 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5674 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5675 want_flags |= TX_CON_CLO_SET;
5676 }
5677
5678 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5679 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5680 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5681
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5682 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5683 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5684 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5685 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5686
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5687 /*************************************************************
5688 * OK, that's finished for the headers. We have done what we *
5689 * could. Let's switch to the DATA state. *
5690 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5691
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5692 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5693
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5694 /* if the user wants to log as soon as possible, without counting
5695 * bytes from the server, then this is the right moment. We have
5696 * to temporarily assign bytes_out to log what we currently have.
5697 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5698 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5699 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5700 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5701 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5702 t->logs.bytes_out = 0;
5703 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5704
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5705 /* Note: we must not try to cheat by jumping directly to DATA,
5706 * otherwise we would not let the client side wake up.
5707 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5708
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5709 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5710 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5711 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5712}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5713
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5714/* This function is an analyser which forwards response body (including chunk
5715 * sizes if any). It is called as soon as we must forward, even if we forward
5716 * zero byte. The only situation where it must not be called is when we're in
5717 * tunnel mode and we want to forward till the close. It's used both to forward
5718 * remaining data and to resync after end of body. It expects the msg_state to
5719 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5720 * 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]5721 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5722 * bytes of pending data + the headers if not already done (between sol and sov).
5723 * 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]5724 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5725int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5726{
5727 struct http_txn *txn = &s->txn;
5728 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5729 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5730 static struct buffer *tmpbuf = NULL;
5731 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5732 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5733
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5734 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5735 return 0;
5736
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5737 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]5738 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5739 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5740 /* Output closed while we were sending data. We must abort and
5741 * wake the other side up.
5742 */
5743 msg->msg_state = HTTP_MSG_ERROR;
5744 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5745 return 1;
5746 }
5747
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5748 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5749 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5750
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5751 /* this is the first time we need the compression buffer */
5752 if (s->comp_algo != NULL && tmpbuf == NULL) {
5753 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5754 goto aborted_xfer; /* no memory */
5755 }
5756
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5757 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5758 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5759 * rep->buf.p still points to the beginning of the message and msg->sol
5760 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5761 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5762 channel_forward(res, msg->sov);
5763 msg->next = 0;
5764 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5765
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5766 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5767 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5768 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5769 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5770 }
5771
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5772 if (s->comp_algo != NULL) {
5773 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5774 if (ret < 0)
5775 goto missing_data; /* not enough spaces in buffers */
5776 compressing = 1;
5777 }
5778
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5779 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5780 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5781 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5782 if (s->comp_algo == NULL) {
5783 bytes = msg->sov - msg->sol;
5784 if (msg->chunk_len || bytes) {
5785 msg->sol = msg->sov;
5786 msg->next -= bytes; /* will be forwarded */
5787 msg->chunk_len += bytes;
5788 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5789 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5790 }
5791
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5792 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5793 int ret;
5794
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5795 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5796 if (compressing) {
5797 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5798 if (ret < 0)
5799 goto aborted_xfer;
5800 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5801
5802 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5803 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5804
5805 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5806 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5807 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5808 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5809 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5810 if (compressing && consumed_data) {
5811 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5812 compressing = 0;
5813 }
5814 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5815 }
5816 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5817 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5818 * set ->sov and ->next to point to the body and switch to DATA or
5819 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5820 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5821 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5822
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5823 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5824 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5825 else if (ret < 0) {
5826 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5827 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]5828 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5829 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5830 if (compressing) {
5831 if (likely(msg->chunk_len > 0)) {
5832 /* skipping data if we are in compression mode */
5833 b_adv(res->buf, msg->next);
5834 msg->next = 0;
5835 msg->sov = 0;
5836 msg->sol = 0;
5837 } else {
5838 if (consumed_data) {
5839 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5840 compressing = 0;
5841 }
5842 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5843 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5844 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5845 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5846 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5847 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5848 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5849
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5850 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5851 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5852 else if (ret < 0) {
5853 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5854 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]5855 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5856 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5857 /* skipping data in buffer for compression */
5858 if (compressing) {
5859 b_adv(res->buf, msg->next);
5860 msg->next = 0;
5861 msg->sov = 0;
5862 msg->sol = 0;
5863 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5864 /* we're in MSG_CHUNK_SIZE now */
5865 }
5866 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5867 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5868
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5869 if (ret == 0)
5870 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5871 else if (ret < 0) {
5872 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5873 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]5874 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5875 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5876 if (s->comp_algo != NULL) {
5877 /* forwarding trailers */
5878 channel_forward(res, msg->next);
5879 msg->next = 0;
5880 }
5881 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5882 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5883 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5884 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5885 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5886 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5887 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5888 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5889 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5890 if (http_resync_states(s)) {
5891 http_silent_debug(__LINE__, s);
5892 /* some state changes occurred, maybe the analyser
5893 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5894 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5895 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5896 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5897 /* response errors are most likely due to
5898 * the client aborting the transfer.
5899 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5900 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5901 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5902 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5903 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5904 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5905 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5906 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5907 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5908 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5909 }
5910 }
5911
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5912 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5913 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5914 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5915 compressing = 0;
5916 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5917
5918 if (res->flags & CF_SHUTW)
5919 goto aborted_xfer;
5920
5921 /* stop waiting for data if the input is closed before the end. If the
5922 * client side was already closed, it means that the client has aborted,
5923 * so we don't want to count this as a server abort. Otherwise it's a
5924 * server abort.
5925 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5926 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5927 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5928 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5929 if (!(s->flags & SN_ERR_MASK))
5930 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5931 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5932 if (objt_server(s->target))
5933 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5934 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5935 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5936
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5937 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5938 if (!s->req->analysers)
5939 goto return_bad_res;
5940
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5941 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5942 if (s->comp_algo == NULL) {
5943 bytes = msg->sov - msg->sol;
5944 if (msg->chunk_len || bytes) {
5945 msg->sol = msg->sov;
5946 msg->next -= bytes; /* will be forwarded */
5947 msg->chunk_len += bytes;
5948 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5949 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5950 }
5951
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5952 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5953 * 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]5954 * Similarly, with keep-alive on the client side, we don't want to forward a
5955 * close.
5956 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5957 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5958 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5959 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5960 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5961
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5962 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5963 * 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]5964 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5965 * modes are already handled by the stream sock layer. We must not do
5966 * this in content-length mode because it could present the MSG_MORE
5967 * flag with the last block of forwarded data, which would cause an
5968 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5969 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5970 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5971 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5972
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5973 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5974 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5975 return 0;
5976
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5977 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5978 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5979 if (objt_server(s->target))
5980 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5981
5982 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5983 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5984 /* don't send any error message as we're in the body */
5985 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5986 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5987 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]5988 if (objt_server(s->target))
5989 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5990
5991 if (!(s->flags & SN_ERR_MASK))
5992 s->flags |= SN_ERR_PRXCOND;
5993 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5994 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5995 return 0;
5996
5997 aborted_xfer:
5998 txn->rsp.msg_state = HTTP_MSG_ERROR;
5999 /* don't send any error message as we're in the body */
6000 stream_int_retnclose(res->cons, NULL);
6001 res->analysers = 0;
6002 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6003
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6004 s->fe->fe_counters.cli_aborts++;
6005 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6006 if (objt_server(s->target))
6007 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6008
6009 if (!(s->flags & SN_ERR_MASK))
6010 s->flags |= SN_ERR_CLICL;
6011 if (!(s->flags & SN_FINST_MASK))
6012 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6013 return 0;
6014}
6015
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6016/* Iterate the same filter through all request headers.
6017 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6018 * Since it can manage the switch to another backend, it updates the per-proxy
6019 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6020 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6021int 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]6022{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6023 char term;
6024 char *cur_ptr, *cur_end, *cur_next;
6025 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6026 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6027 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6028 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6029
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6030 last_hdr = 0;
6031
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6032 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6033 old_idx = 0;
6034
6035 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6036 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6037 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6038 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6039 (exp->action == ACT_ALLOW ||
6040 exp->action == ACT_DENY ||
6041 exp->action == ACT_TARPIT))
6042 return 0;
6043
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6044 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6045 if (!cur_idx)
6046 break;
6047
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6048 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6049 cur_ptr = cur_next;
6050 cur_end = cur_ptr + cur_hdr->len;
6051 cur_next = cur_end + cur_hdr->cr + 1;
6052
6053 /* Now we have one header between cur_ptr and cur_end,
6054 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6055 */
6056
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6057 /* The annoying part is that pattern matching needs
6058 * that we modify the contents to null-terminate all
6059 * strings before testing them.
6060 */
6061
6062 term = *cur_end;
6063 *cur_end = '\0';
6064
6065 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6066 switch (exp->action) {
6067 case ACT_SETBE:
6068 /* It is not possible to jump a second time.
6069 * FIXME: should we return an HTTP/500 here so that
6070 * the admin knows there's a problem ?
6071 */
6072 if (t->be != t->fe)
6073 break;
6074
6075 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6076 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6077 last_hdr = 1;
6078 break;
6079
6080 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6081 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6082 last_hdr = 1;
6083 break;
6084
6085 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6086 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6087 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6088
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6089 t->fe->fe_counters.denied_req++;
6090 if (t->fe != t->be)
6091 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6092 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6093 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6094
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6095 break;
6096
6097 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6098 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6099 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6100
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6101 t->fe->fe_counters.denied_req++;
6102 if (t->fe != t->be)
6103 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6104 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6105 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6106
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6107 break;
6108
6109 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6110 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6111 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6112 /* FIXME: if the user adds a newline in the replacement, the
6113 * index will not be recalculated for now, and the new line
6114 * will not be counted as a new header.
6115 */
6116
6117 cur_end += delta;
6118 cur_next += delta;
6119 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6120 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6121 break;
6122
6123 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6124 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6125 cur_next += delta;
6126
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6127 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6128 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6129 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6130 cur_hdr->len = 0;
6131 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6132 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6133 break;
6134
6135 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6136 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6137 if (cur_end)
6138 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6139
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6140 /* keep the link from this header to next one in case of later
6141 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6142 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6143 old_idx = cur_idx;
6144 }
6145 return 0;
6146}
6147
6148
6149/* Apply the filter to the request line.
6150 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6151 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6152 * Since it can manage the switch to another backend, it updates the per-proxy
6153 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6154 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6155int 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]6156{
6157 char term;
6158 char *cur_ptr, *cur_end;
6159 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6160 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6161 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6162
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6163 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6164 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6165 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6166 (exp->action == ACT_ALLOW ||
6167 exp->action == ACT_DENY ||
6168 exp->action == ACT_TARPIT))
6169 return 0;
6170 else if (exp->action == ACT_REMOVE)
6171 return 0;
6172
6173 done = 0;
6174
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6175 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6176 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6177
6178 /* Now we have the request line between cur_ptr and cur_end */
6179
6180 /* The annoying part is that pattern matching needs
6181 * that we modify the contents to null-terminate all
6182 * strings before testing them.
6183 */
6184
6185 term = *cur_end;
6186 *cur_end = '\0';
6187
6188 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6189 switch (exp->action) {
6190 case ACT_SETBE:
6191 /* It is not possible to jump a second time.
6192 * FIXME: should we return an HTTP/500 here so that
6193 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6194 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6195 if (t->be != t->fe)
6196 break;
6197
6198 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6199 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6200 done = 1;
6201 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6202
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6203 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6204 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6205 done = 1;
6206 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6207
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6208 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6209 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6210
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6211 t->fe->fe_counters.denied_req++;
6212 if (t->fe != t->be)
6213 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6214 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6215 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6216
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6217 done = 1;
6218 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6219
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6220 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6221 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6222
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6223 t->fe->fe_counters.denied_req++;
6224 if (t->fe != t->be)
6225 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6226 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6227 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6228
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6229 done = 1;
6230 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6231
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6232 case ACT_REPLACE:
6233 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6234 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6235 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6236 /* FIXME: if the user adds a newline in the replacement, the
6237 * index will not be recalculated for now, and the new line
6238 * will not be counted as a new header.
6239 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6240
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6241 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6242 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6243 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6244 HTTP_MSG_RQMETH,
6245 cur_ptr, cur_end + 1,
6246 NULL, NULL);
6247 if (unlikely(!cur_end))
6248 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6249
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6250 /* we have a full request and we know that we have either a CR
6251 * or an LF at <ptr>.
6252 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6253 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6254 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]6255 /* there is no point trying this regex on headers */
6256 return 1;
6257 }
6258 }
6259 *cur_end = term; /* restore the string terminator */
6260 return done;
6261}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6262
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6263
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6264
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6265/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6266 * 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]6267 * 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]6268 * unparsable request. Since it can manage the switch to another backend, it
6269 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6270 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6271int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6272{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6273 struct http_txn *txn = &s->txn;
6274 struct hdr_exp *exp;
6275
6276 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6277 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6278
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6279 /*
6280 * The interleaving of transformations and verdicts
6281 * makes it difficult to decide to continue or stop
6282 * the evaluation.
6283 */
6284
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6285 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6286 break;
6287
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6288 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6289 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6290 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6291 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6292
6293 /* if this filter had a condition, evaluate it now and skip to
6294 * next filter if the condition does not match.
6295 */
6296 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6297 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]6298 ret = acl_pass(ret);
6299 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6300 ret = !ret;
6301
6302 if (!ret)
6303 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6304 }
6305
6306 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6307 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6308 if (unlikely(ret < 0))
6309 return -1;
6310
6311 if (likely(ret == 0)) {
6312 /* The filter did not match the request, it can be
6313 * iterated through all headers.
6314 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6315 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6316 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6317 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6318 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6319}
6320
6321
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6322
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6323/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6324 * Try to retrieve the server associated to the appsession.
6325 * If the server is found, it's assigned to the session.
6326 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6327void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6328 struct http_txn *txn = &t->txn;
6329 appsess *asession = NULL;
6330 char *sessid_temp = NULL;
6331
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6332 if (len > t->be->appsession_len) {
6333 len = t->be->appsession_len;
6334 }
6335
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6336 if (t->be->options2 & PR_O2_AS_REQL) {
6337 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6338 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6339 /* 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]6340 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6341 }
6342
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6343 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6344 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6345 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6346 return;
6347 }
6348
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6349 memcpy(txn->sessid, buf, len);
6350 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6351 }
6352
6353 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6354 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6355 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6356 return;
6357 }
6358
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6359 memcpy(sessid_temp, buf, len);
6360 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6361
6362 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6363 /* free previously allocated memory */
6364 pool_free2(apools.sessid, sessid_temp);
6365
6366 if (asession != NULL) {
6367 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6368 if (!(t->be->options2 & PR_O2_AS_REQL))
6369 asession->request_count++;
6370
6371 if (asession->serverid != NULL) {
6372 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6373
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6374 while (srv) {
6375 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6376 if ((srv->state & SRV_RUNNING) ||
6377 (t->be->options & PR_O_PERSIST) ||
6378 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6379 /* we found the server and it's usable */
6380 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6381 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6382 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6383 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6384
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6385 break;
6386 } else {
6387 txn->flags &= ~TX_CK_MASK;
6388 txn->flags |= TX_CK_DOWN;
6389 }
6390 }
6391 srv = srv->next;
6392 }
6393 }
6394 }
6395}
6396
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6397/* Find the end of a cookie value contained between <s> and <e>. It works the
6398 * same way as with headers above except that the semi-colon also ends a token.
6399 * See RFC2965 for more information. Note that it requires a valid header to
6400 * return a valid result.
6401 */
6402char *find_cookie_value_end(char *s, const char *e)
6403{
6404 int quoted, qdpair;
6405
6406 quoted = qdpair = 0;
6407 for (; s < e; s++) {
6408 if (qdpair) qdpair = 0;
6409 else if (quoted) {
6410 if (*s == '\\') qdpair = 1;
6411 else if (*s == '"') quoted = 0;
6412 }
6413 else if (*s == '"') quoted = 1;
6414 else if (*s == ',' || *s == ';') return s;
6415 }
6416 return s;
6417}
6418
6419/* Delete a value in a header between delimiters <from> and <next> in buffer
6420 * <buf>. The number of characters displaced is returned, and the pointer to
6421 * the first delimiter is updated if required. The function tries as much as
6422 * possible to respect the following principles :
6423 * - replace <from> delimiter by the <next> one unless <from> points to a
6424 * colon, in which case <next> is simply removed
6425 * - set exactly one space character after the new first delimiter, unless
6426 * there are not enough characters in the block being moved to do so.
6427 * - remove unneeded spaces before the previous delimiter and after the new
6428 * one.
6429 *
6430 * It is the caller's responsibility to ensure that :
6431 * - <from> points to a valid delimiter or the colon ;
6432 * - <next> points to a valid delimiter or the final CR/LF ;
6433 * - there are non-space chars before <from> ;
6434 * - there is a CR/LF at or after <next>.
6435 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6436int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6437{
6438 char *prev = *from;
6439
6440 if (*prev == ':') {
6441 /* We're removing the first value, preserve the colon and add a
6442 * space if possible.
6443 */
6444 if (!http_is_crlf[(unsigned char)*next])
6445 next++;
6446 prev++;
6447 if (prev < next)
6448 *prev++ = ' ';
6449
6450 while (http_is_spht[(unsigned char)*next])
6451 next++;
6452 } else {
6453 /* Remove useless spaces before the old delimiter. */
6454 while (http_is_spht[(unsigned char)*(prev-1)])
6455 prev--;
6456 *from = prev;
6457
6458 /* copy the delimiter and if possible a space if we're
6459 * not at the end of the line.
6460 */
6461 if (!http_is_crlf[(unsigned char)*next]) {
6462 *prev++ = *next++;
6463 if (prev + 1 < next)
6464 *prev++ = ' ';
6465 while (http_is_spht[(unsigned char)*next])
6466 next++;
6467 }
6468 }
6469 return buffer_replace2(buf, prev, next, NULL, 0);
6470}
6471
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6472/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6473 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6474 * desirable to call it only when needed. This code is quite complex because
6475 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6476 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6477 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6478void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6479{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6480 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6481 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6482 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6483 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6484 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6485
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6486 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6487 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6488 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6489
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6490 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6491 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6492 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6493
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6494 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6495 hdr_beg = hdr_next;
6496 hdr_end = hdr_beg + cur_hdr->len;
6497 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6498
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6499 /* We have one full header between hdr_beg and hdr_end, and the
6500 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6501 * "Cookie:" headers.
6502 */
6503
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6504 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6505 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6506 old_idx = cur_idx;
6507 continue;
6508 }
6509
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6510 del_from = NULL; /* nothing to be deleted */
6511 preserve_hdr = 0; /* assume we may kill the whole header */
6512
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6513 /* Now look for cookies. Conforming to RFC2109, we have to support
6514 * attributes whose name begin with a '$', and associate them with
6515 * the right cookie, if we want to delete this cookie.
6516 * So there are 3 cases for each cookie read :
6517 * 1) it's a special attribute, beginning with a '$' : ignore it.
6518 * 2) it's a server id cookie that we *MAY* want to delete : save
6519 * some pointers on it (last semi-colon, beginning of cookie...)
6520 * 3) it's an application cookie : we *MAY* have to delete a previous
6521 * "special" cookie.
6522 * At the end of loop, if a "special" cookie remains, we may have to
6523 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6524 * *MUST* delete it.
6525 *
6526 * Note: RFC2965 is unclear about the processing of spaces around
6527 * the equal sign in the ATTR=VALUE form. A careful inspection of
6528 * the RFC explicitly allows spaces before it, and not within the
6529 * tokens (attrs or values). An inspection of RFC2109 allows that
6530 * too but section 10.1.3 lets one think that spaces may be allowed
6531 * after the equal sign too, resulting in some (rare) buggy
6532 * implementations trying to do that. So let's do what servers do.
6533 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6534 * allowed quoted strings in values, with any possible character
6535 * after a backslash, including control chars and delimitors, which
6536 * causes parsing to become ambiguous. Browsers also allow spaces
6537 * within values even without quotes.
6538 *
6539 * We have to keep multiple pointers in order to support cookie
6540 * removal at the beginning, middle or end of header without
6541 * corrupting the header. All of these headers are valid :
6542 *
6543 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6544 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6545 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6546 * | | | | | | | | |
6547 * | | | | | | | | hdr_end <--+
6548 * | | | | | | | +--> next
6549 * | | | | | | +----> val_end
6550 * | | | | | +-----------> val_beg
6551 * | | | | +--------------> equal
6552 * | | | +----------------> att_end
6553 * | | +---------------------> att_beg
6554 * | +--------------------------> prev
6555 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6556 */
6557
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6558 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6559 /* Iterate through all cookies on this line */
6560
6561 /* find att_beg */
6562 att_beg = prev + 1;
6563 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6564 att_beg++;
6565
6566 /* find att_end : this is the first character after the last non
6567 * space before the equal. It may be equal to hdr_end.
6568 */
6569 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6570
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6571 while (equal < hdr_end) {
6572 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6573 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6574 if (http_is_spht[(unsigned char)*equal++])
6575 continue;
6576 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6577 }
6578
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6579 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6580 * is between <att_beg> and <equal>, both may be identical.
6581 */
6582
6583 /* look for end of cookie if there is an equal sign */
6584 if (equal < hdr_end && *equal == '=') {
6585 /* look for the beginning of the value */
6586 val_beg = equal + 1;
6587 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6588 val_beg++;
6589
6590 /* find the end of the value, respecting quotes */
6591 next = find_cookie_value_end(val_beg, hdr_end);
6592
6593 /* make val_end point to the first white space or delimitor after the value */
6594 val_end = next;
6595 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6596 val_end--;
6597 } else {
6598 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6599 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6600
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6601 /* We have nothing to do with attributes beginning with '$'. However,
6602 * they will automatically be removed if a header before them is removed,
6603 * since they're supposed to be linked together.
6604 */
6605 if (*att_beg == '$')
6606 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6607
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6608 /* Ignore cookies with no equal sign */
6609 if (equal == next) {
6610 /* This is not our cookie, so we must preserve it. But if we already
6611 * scheduled another cookie for removal, we cannot remove the
6612 * complete header, but we can remove the previous block itself.
6613 */
6614 preserve_hdr = 1;
6615 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6616 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6617 val_end += delta;
6618 next += delta;
6619 hdr_end += delta;
6620 hdr_next += delta;
6621 cur_hdr->len += delta;
6622 http_msg_move_end(&txn->req, delta);
6623 prev = del_from;
6624 del_from = NULL;
6625 }
6626 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6627 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6628
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6629 /* if there are spaces around the equal sign, we need to
6630 * strip them otherwise we'll get trouble for cookie captures,
6631 * or even for rewrites. Since this happens extremely rarely,
6632 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6633 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6634 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6635 int stripped_before = 0;
6636 int stripped_after = 0;
6637
6638 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6639 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6640 equal += stripped_before;
6641 val_beg += stripped_before;
6642 }
6643
6644 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6645 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6646 val_beg += stripped_after;
6647 stripped_before += stripped_after;
6648 }
6649
6650 val_end += stripped_before;
6651 next += stripped_before;
6652 hdr_end += stripped_before;
6653 hdr_next += stripped_before;
6654 cur_hdr->len += stripped_before;
6655 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6656 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6657 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6658
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6659 /* First, let's see if we want to capture this cookie. We check
6660 * that we don't already have a client side cookie, because we
6661 * can only capture one. Also as an optimisation, we ignore
6662 * cookies shorter than the declared name.
6663 */
6664 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6665 (val_end - att_beg >= t->fe->capture_namelen) &&
6666 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6667 int log_len = val_end - att_beg;
6668
6669 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6670 Alert("HTTP logging : out of memory.\n");
6671 } else {
6672 if (log_len > t->fe->capture_len)
6673 log_len = t->fe->capture_len;
6674 memcpy(txn->cli_cookie, att_beg, log_len);
6675 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6676 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6677 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6678
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6679 /* Persistence cookies in passive, rewrite or insert mode have the
6680 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6681 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6682 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6683 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6684 * For cookies in prefix mode, the form is :
6685 *
6686 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6687 */
6688 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6689 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6690 struct server *srv = t->be->srv;
6691 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6692
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6693 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6694 * have the server ID between val_beg and delim, and the original cookie between
6695 * delim+1 and val_end. Otherwise, delim==val_end :
6696 *
6697 * Cookie: NAME=SRV; # in all but prefix modes
6698 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6699 * | || || | |+-> next
6700 * | || || | +--> val_end
6701 * | || || +---------> delim
6702 * | || |+------------> val_beg
6703 * | || +-------------> att_end = equal
6704 * | |+-----------------> att_beg
6705 * | +------------------> prev
6706 * +-------------------------> hdr_beg
6707 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6708
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6709 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6710 for (delim = val_beg; delim < val_end; delim++)
6711 if (*delim == COOKIE_DELIM)
6712 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6713 } else {
6714 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6715 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6716 /* Now check if the cookie contains a date field, which would
6717 * appear after a vertical bar ('|') just after the server name
6718 * and before the delimiter.
6719 */
6720 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6721 if (vbar1) {
6722 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6723 * right is the last seen date. It is a base64 encoded
6724 * 30-bit value representing the UNIX date since the
6725 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6726 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6727 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6728 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6729 if (val_end - vbar1 >= 5) {
6730 val = b64tos30(vbar1);
6731 if (val > 0)
6732 txn->cookie_last_date = val << 2;
6733 }
6734 /* look for a second vertical bar */
6735 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6736 if (vbar1 && (val_end - vbar1 > 5)) {
6737 val = b64tos30(vbar1 + 1);
6738 if (val > 0)
6739 txn->cookie_first_date = val << 2;
6740 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6741 }
6742 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6743
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6744 /* if the cookie has an expiration date and the proxy wants to check
6745 * it, then we do that now. We first check if the cookie is too old,
6746 * then only if it has expired. We detect strict overflow because the
6747 * time resolution here is not great (4 seconds). Cookies with dates
6748 * in the future are ignored if their offset is beyond one day. This
6749 * allows an admin to fix timezone issues without expiring everyone
6750 * and at the same time avoids keeping unwanted side effects for too
6751 * long.
6752 */
6753 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6754 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6755 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6756 txn->flags &= ~TX_CK_MASK;
6757 txn->flags |= TX_CK_OLD;
6758 delim = val_beg; // let's pretend we have not found the cookie
6759 txn->cookie_first_date = 0;
6760 txn->cookie_last_date = 0;
6761 }
6762 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6763 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6764 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6765 txn->flags &= ~TX_CK_MASK;
6766 txn->flags |= TX_CK_EXPIRED;
6767 delim = val_beg; // let's pretend we have not found the cookie
6768 txn->cookie_first_date = 0;
6769 txn->cookie_last_date = 0;
6770 }
6771
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6772 /* Here, we'll look for the first running server which supports the cookie.
6773 * This allows to share a same cookie between several servers, for example
6774 * to dedicate backup servers to specific servers only.
6775 * However, to prevent clients from sticking to cookie-less backup server
6776 * when they have incidentely learned an empty cookie, we simply ignore
6777 * empty cookies and mark them as invalid.
6778 * The same behaviour is applied when persistence must be ignored.
6779 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6780 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6781 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6782
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6783 while (srv) {
6784 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6785 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6786 if ((srv->state & SRV_RUNNING) ||
6787 (t->be->options & PR_O_PERSIST) ||
6788 (t->flags & SN_FORCE_PRST)) {
6789 /* we found the server and we can use it */
6790 txn->flags &= ~TX_CK_MASK;
6791 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6792 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6793 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6794 break;
6795 } else {
6796 /* we found a server, but it's down,
6797 * mark it as such and go on in case
6798 * another one is available.
6799 */
6800 txn->flags &= ~TX_CK_MASK;
6801 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6802 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6803 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6804 srv = srv->next;
6805 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6806
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6807 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6808 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6809 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6810 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6811 txn->flags |= TX_CK_UNUSED;
6812 else
6813 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6814 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6815
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6816 /* depending on the cookie mode, we may have to either :
6817 * - delete the complete cookie if we're in insert+indirect mode, so that
6818 * the server never sees it ;
6819 * - remove the server id from the cookie value, and tag the cookie as an
6820 * application cookie so that it does not get accidentely removed later,
6821 * if we're in cookie prefix mode
6822 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6823 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6824 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6825
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6826 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6827 val_end += delta;
6828 next += delta;
6829 hdr_end += delta;
6830 hdr_next += delta;
6831 cur_hdr->len += delta;
6832 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6833
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6834 del_from = NULL;
6835 preserve_hdr = 1; /* we want to keep this cookie */
6836 }
6837 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6838 (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]6839 del_from = prev;
6840 }
6841 } else {
6842 /* This is not our cookie, so we must preserve it. But if we already
6843 * scheduled another cookie for removal, we cannot remove the
6844 * complete header, but we can remove the previous block itself.
6845 */
6846 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6847
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6848 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6849 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6850 if (att_beg >= del_from)
6851 att_beg += delta;
6852 if (att_end >= del_from)
6853 att_end += delta;
6854 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6855 val_end += delta;
6856 next += delta;
6857 hdr_end += delta;
6858 hdr_next += delta;
6859 cur_hdr->len += delta;
6860 http_msg_move_end(&txn->req, delta);
6861 prev = del_from;
6862 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6863 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6864 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6865
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6866 /* Look for the appsession cookie unless persistence must be ignored */
6867 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6868 int cmp_len, value_len;
6869 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6870
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6871 if (t->be->options2 & PR_O2_AS_PFX) {
6872 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6873 value_begin = att_beg + t->be->appsession_name_len;
6874 value_len = val_end - att_beg - t->be->appsession_name_len;
6875 } else {
6876 cmp_len = att_end - att_beg;
6877 value_begin = val_beg;
6878 value_len = val_end - val_beg;
6879 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6880
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6881 /* let's see if the cookie is our appcookie */
6882 if (cmp_len == t->be->appsession_name_len &&
6883 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6884 manage_client_side_appsession(t, value_begin, value_len);
6885 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6886 }
6887
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6888 /* continue with next cookie on this header line */
6889 att_beg = next;
6890 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6891
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6892 /* There are no more cookies on this line.
6893 * We may still have one (or several) marked for deletion at the
6894 * end of the line. We must do this now in two ways :
6895 * - if some cookies must be preserved, we only delete from the
6896 * mark to the end of line ;
6897 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6898 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6899 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6900 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6901 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6902 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6903 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6904 cur_hdr->len += delta;
6905 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6906 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6907
6908 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6909 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6910 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6911 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6912 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6913 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6914 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6915 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6916 }
6917
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6918 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6919 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6920 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6921}
6922
6923
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6924/* Iterate the same filter through all response headers contained in <rtr>.
6925 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6926 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6927int 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]6928{
6929 char term;
6930 char *cur_ptr, *cur_end, *cur_next;
6931 int cur_idx, old_idx, last_hdr;
6932 struct http_txn *txn = &t->txn;
6933 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6934 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6935
6936 last_hdr = 0;
6937
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6938 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6939 old_idx = 0;
6940
6941 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6942 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6943 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6944 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6945 (exp->action == ACT_ALLOW ||
6946 exp->action == ACT_DENY))
6947 return 0;
6948
6949 cur_idx = txn->hdr_idx.v[old_idx].next;
6950 if (!cur_idx)
6951 break;
6952
6953 cur_hdr = &txn->hdr_idx.v[cur_idx];
6954 cur_ptr = cur_next;
6955 cur_end = cur_ptr + cur_hdr->len;
6956 cur_next = cur_end + cur_hdr->cr + 1;
6957
6958 /* Now we have one header between cur_ptr and cur_end,
6959 * and the next header starts at cur_next.
6960 */
6961
6962 /* The annoying part is that pattern matching needs
6963 * that we modify the contents to null-terminate all
6964 * strings before testing them.
6965 */
6966
6967 term = *cur_end;
6968 *cur_end = '\0';
6969
6970 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6971 switch (exp->action) {
6972 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6973 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6974 last_hdr = 1;
6975 break;
6976
6977 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6978 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6979 last_hdr = 1;
6980 break;
6981
6982 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6983 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6984 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6985 /* FIXME: if the user adds a newline in the replacement, the
6986 * index will not be recalculated for now, and the new line
6987 * will not be counted as a new header.
6988 */
6989
6990 cur_end += delta;
6991 cur_next += delta;
6992 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6993 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6994 break;
6995
6996 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6997 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6998 cur_next += delta;
6999
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7000 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7001 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7002 txn->hdr_idx.used--;
7003 cur_hdr->len = 0;
7004 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7005 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7006 break;
7007
7008 }
7009 }
7010 if (cur_end)
7011 *cur_end = term; /* restore the string terminator */
7012
7013 /* keep the link from this header to next one in case of later
7014 * removal of next header.
7015 */
7016 old_idx = cur_idx;
7017 }
7018 return 0;
7019}
7020
7021
7022/* Apply the filter to the status line in the response buffer <rtr>.
7023 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7024 * or -1 if a replacement resulted in an invalid status line.
7025 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7026int 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]7027{
7028 char term;
7029 char *cur_ptr, *cur_end;
7030 int done;
7031 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7032 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7033
7034
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7035 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7036 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7037 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7038 (exp->action == ACT_ALLOW ||
7039 exp->action == ACT_DENY))
7040 return 0;
7041 else if (exp->action == ACT_REMOVE)
7042 return 0;
7043
7044 done = 0;
7045
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7046 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7047 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7048
7049 /* Now we have the status line between cur_ptr and cur_end */
7050
7051 /* The annoying part is that pattern matching needs
7052 * that we modify the contents to null-terminate all
7053 * strings before testing them.
7054 */
7055
7056 term = *cur_end;
7057 *cur_end = '\0';
7058
7059 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7060 switch (exp->action) {
7061 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7062 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7063 done = 1;
7064 break;
7065
7066 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7067 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7068 done = 1;
7069 break;
7070
7071 case ACT_REPLACE:
7072 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7073 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7074 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7075 /* FIXME: if the user adds a newline in the replacement, the
7076 * index will not be recalculated for now, and the new line
7077 * will not be counted as a new header.
7078 */
7079
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7080 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7081 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7082 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7083 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7084 cur_ptr, cur_end + 1,
7085 NULL, NULL);
7086 if (unlikely(!cur_end))
7087 return -1;
7088
7089 /* we have a full respnse and we know that we have either a CR
7090 * or an LF at <ptr>.
7091 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7092 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]7093 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]7094 /* there is no point trying this regex on headers */
7095 return 1;
7096 }
7097 }
7098 *cur_end = term; /* restore the string terminator */
7099 return done;
7100}
7101
7102
7103
7104/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7105 * 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]7106 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7107 * unparsable response.
7108 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7109int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7110{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7111 struct http_txn *txn = &s->txn;
7112 struct hdr_exp *exp;
7113
7114 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7115 int ret;
7116
7117 /*
7118 * The interleaving of transformations and verdicts
7119 * makes it difficult to decide to continue or stop
7120 * the evaluation.
7121 */
7122
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7123 if (txn->flags & TX_SVDENY)
7124 break;
7125
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7126 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7127 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7128 exp->action == ACT_PASS)) {
7129 exp = exp->next;
7130 continue;
7131 }
7132
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7133 /* if this filter had a condition, evaluate it now and skip to
7134 * next filter if the condition does not match.
7135 */
7136 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7137 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]7138 ret = acl_pass(ret);
7139 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7140 ret = !ret;
7141 if (!ret)
7142 continue;
7143 }
7144
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7145 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7146 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7147 if (unlikely(ret < 0))
7148 return -1;
7149
7150 if (likely(ret == 0)) {
7151 /* The filter did not match the response, it can be
7152 * iterated through all headers.
7153 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7154 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7155 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7156 }
7157 return 0;
7158}
7159
7160
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7161/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7162 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7163 * desirable to call it only when needed. This function is also used when we
7164 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7165 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7166void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7167{
7168 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7169 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7170 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7171 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7172 char *hdr_beg, *hdr_end, *hdr_next;
7173 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7174
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7175 /* Iterate through the headers.
7176 * we start with the start line.
7177 */
7178 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7179 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7180
7181 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7182 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7183 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7184
7185 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7186 hdr_beg = hdr_next;
7187 hdr_end = hdr_beg + cur_hdr->len;
7188 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7189
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7190 /* We have one full header between hdr_beg and hdr_end, and the
7191 * next header starts at hdr_next. We're only interested in
7192 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7193 */
7194
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7195 is_cookie2 = 0;
7196 prev = hdr_beg + 10;
7197 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7198 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7199 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7200 if (!val) {
7201 old_idx = cur_idx;
7202 continue;
7203 }
7204 is_cookie2 = 1;
7205 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7206 }
7207
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7208 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7209 * <prev> points to the colon.
7210 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7211 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7212
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7213 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7214 * check-cache is enabled) and we are not interested in checking
7215 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7216 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7217 if (t->be->cookie_name == NULL &&
7218 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7219 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7220 return;
7221
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7222 /* OK so now we know we have to process this response cookie.
7223 * The format of the Set-Cookie header is slightly different
7224 * from the format of the Cookie header in that it does not
7225 * support the comma as a cookie delimiter (thus the header
7226 * cannot be folded) because the Expires attribute described in
7227 * the original Netscape's spec may contain an unquoted date
7228 * with a comma inside. We have to live with this because
7229 * many browsers don't support Max-Age and some browsers don't
7230 * support quoted strings. However the Set-Cookie2 header is
7231 * clean.
7232 *
7233 * We have to keep multiple pointers in order to support cookie
7234 * removal at the beginning, middle or end of header without
7235 * corrupting the header (in case of set-cookie2). A special
7236 * pointer, <scav> points to the beginning of the set-cookie-av
7237 * fields after the first semi-colon. The <next> pointer points
7238 * either to the end of line (set-cookie) or next unquoted comma
7239 * (set-cookie2). All of these headers are valid :
7240 *
7241 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7242 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7243 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7244 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7245 * | | | | | | | | | |
7246 * | | | | | | | | +-> next hdr_end <--+
7247 * | | | | | | | +------------> scav
7248 * | | | | | | +--------------> val_end
7249 * | | | | | +--------------------> val_beg
7250 * | | | | +----------------------> equal
7251 * | | | +------------------------> att_end
7252 * | | +----------------------------> att_beg
7253 * | +------------------------------> prev
7254 * +-----------------------------------------> hdr_beg
7255 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7256
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7257 for (; prev < hdr_end; prev = next) {
7258 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7259
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7260 /* find att_beg */
7261 att_beg = prev + 1;
7262 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7263 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7264
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7265 /* find att_end : this is the first character after the last non
7266 * space before the equal. It may be equal to hdr_end.
7267 */
7268 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7269
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7270 while (equal < hdr_end) {
7271 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7272 break;
7273 if (http_is_spht[(unsigned char)*equal++])
7274 continue;
7275 att_end = equal;
7276 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7277
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7278 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7279 * is between <att_beg> and <equal>, both may be identical.
7280 */
7281
7282 /* look for end of cookie if there is an equal sign */
7283 if (equal < hdr_end && *equal == '=') {
7284 /* look for the beginning of the value */
7285 val_beg = equal + 1;
7286 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7287 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7288
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7289 /* find the end of the value, respecting quotes */
7290 next = find_cookie_value_end(val_beg, hdr_end);
7291
7292 /* make val_end point to the first white space or delimitor after the value */
7293 val_end = next;
7294 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7295 val_end--;
7296 } else {
7297 /* <equal> points to next comma, semi-colon or EOL */
7298 val_beg = val_end = next = equal;
7299 }
7300
7301 if (next < hdr_end) {
7302 /* Set-Cookie2 supports multiple cookies, and <next> points to
7303 * a colon or semi-colon before the end. So skip all attr-value
7304 * pairs and look for the next comma. For Set-Cookie, since
7305 * commas are permitted in values, skip to the end.
7306 */
7307 if (is_cookie2)
7308 next = find_hdr_value_end(next, hdr_end);
7309 else
7310 next = hdr_end;
7311 }
7312
7313 /* Now everything is as on the diagram above */
7314
7315 /* Ignore cookies with no equal sign */
7316 if (equal == val_end)
7317 continue;
7318
7319 /* If there are spaces around the equal sign, we need to
7320 * strip them otherwise we'll get trouble for cookie captures,
7321 * or even for rewrites. Since this happens extremely rarely,
7322 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7323 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7324 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7325 int stripped_before = 0;
7326 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7327
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7328 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7329 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7330 equal += stripped_before;
7331 val_beg += stripped_before;
7332 }
7333
7334 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7335 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7336 val_beg += stripped_after;
7337 stripped_before += stripped_after;
7338 }
7339
7340 val_end += stripped_before;
7341 next += stripped_before;
7342 hdr_end += stripped_before;
7343 hdr_next += stripped_before;
7344 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7345 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7346 }
7347
7348 /* First, let's see if we want to capture this cookie. We check
7349 * that we don't already have a server side cookie, because we
7350 * can only capture one. Also as an optimisation, we ignore
7351 * cookies shorter than the declared name.
7352 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7353 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7354 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7355 (val_end - att_beg >= t->fe->capture_namelen) &&
7356 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7357 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7358 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7359 Alert("HTTP logging : out of memory.\n");
7360 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7361 else {
7362 if (log_len > t->fe->capture_len)
7363 log_len = t->fe->capture_len;
7364 memcpy(txn->srv_cookie, att_beg, log_len);
7365 txn->srv_cookie[log_len] = 0;
7366 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7367 }
7368
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7369 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7370 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7371 if (!(t->flags & SN_IGNORE_PRST) &&
7372 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7373 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7374 /* assume passive cookie by default */
7375 txn->flags &= ~TX_SCK_MASK;
7376 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7377
7378 /* If the cookie is in insert mode on a known server, we'll delete
7379 * this occurrence because we'll insert another one later.
7380 * 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]7381 * a direct access.
7382 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7383 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7384 /* The "preserve" flag was set, we don't want to touch the
7385 * server's cookie.
7386 */
7387 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7388 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7389 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7390 /* this cookie must be deleted */
7391 if (*prev == ':' && next == hdr_end) {
7392 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7393 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7394 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7395 txn->hdr_idx.used--;
7396 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7397 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7398 hdr_next += delta;
7399 http_msg_move_end(&txn->rsp, delta);
7400 /* note: while both invalid now, <next> and <hdr_end>
7401 * are still equal, so the for() will stop as expected.
7402 */
7403 } else {
7404 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7405 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7406 next = prev;
7407 hdr_end += delta;
7408 hdr_next += delta;
7409 cur_hdr->len += delta;
7410 http_msg_move_end(&txn->rsp, delta);
7411 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7412 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7413 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7414 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7415 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7416 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7417 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7418 * with this server since we know it.
7419 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7420 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7421 next += delta;
7422 hdr_end += delta;
7423 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7424 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7425 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7426
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7427 txn->flags &= ~TX_SCK_MASK;
7428 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7429 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7430 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7431 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7432 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7433 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7434 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7435 next += delta;
7436 hdr_end += delta;
7437 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7438 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7439 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7440
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7441 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7442 txn->flags &= ~TX_SCK_MASK;
7443 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7444 }
7445 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7446 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7447 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7448 int cmp_len, value_len;
7449 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7450
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7451 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7452 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7453 value_begin = att_beg + t->be->appsession_name_len;
7454 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]7455 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7456 cmp_len = att_end - att_beg;
7457 value_begin = val_beg;
7458 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7459 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7460
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7461 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7462 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7463 /* free a possibly previously allocated memory */
7464 pool_free2(apools.sessid, txn->sessid);
7465
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7466 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7467 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7468 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7469 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7470 return;
7471 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7472 memcpy(txn->sessid, value_begin, value_len);
7473 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7474 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7475 }
7476 /* that's done for this cookie, check the next one on the same
7477 * line when next != hdr_end (only if is_cookie2).
7478 */
7479 }
7480 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7481 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7482 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7483
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7484 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7485 appsess *asession = NULL;
7486 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7487 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7488 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7489 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7490 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7491 Alert("Not enough Memory process_srv():asession:calloc().\n");
7492 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7493 return;
7494 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7495 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7496
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7497 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7498 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7499 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]7500 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7501 return;
7502 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7503 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7504 asession->sessid[t->be->appsession_len] = 0;
7505
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7506 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7507 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7508 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7509 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]7510 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7511 return;
7512 }
7513 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7514 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7515
7516 asession->request_count = 0;
7517 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7518 }
7519
7520 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7521 asession->request_count++;
7522 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7523}
7524
7525
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7526/*
7527 * Check if response is cacheable or not. Updates t->flags.
7528 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7529void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7530{
7531 struct http_txn *txn = &t->txn;
7532 char *p1, *p2;
7533
7534 char *cur_ptr, *cur_end, *cur_next;
7535 int cur_idx;
7536
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7537 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7538 return;
7539
7540 /* Iterate through the headers.
7541 * we start with the start line.
7542 */
7543 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7544 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7545
7546 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7547 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7548 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7549
7550 cur_hdr = &txn->hdr_idx.v[cur_idx];
7551 cur_ptr = cur_next;
7552 cur_end = cur_ptr + cur_hdr->len;
7553 cur_next = cur_end + cur_hdr->cr + 1;
7554
7555 /* We have one full header between cur_ptr and cur_end, and the
7556 * next header starts at cur_next. We're only interested in
7557 * "Cookie:" headers.
7558 */
7559
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7560 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7561 if (val) {
7562 if ((cur_end - (cur_ptr + val) >= 8) &&
7563 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7564 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7565 return;
7566 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7567 }
7568
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7569 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7570 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7571 continue;
7572
7573 /* OK, right now we know we have a cache-control header at cur_ptr */
7574
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7575 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7576
7577 if (p1 >= cur_end) /* no more info */
7578 continue;
7579
7580 /* p1 is at the beginning of the value */
7581 p2 = p1;
7582
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7583 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7584 p2++;
7585
7586 /* we have a complete value between p1 and p2 */
7587 if (p2 < cur_end && *p2 == '=') {
7588 /* we have something of the form no-cache="set-cookie" */
7589 if ((cur_end - p1 >= 21) &&
7590 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7591 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7592 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7593 continue;
7594 }
7595
7596 /* OK, so we know that either p2 points to the end of string or to a comma */
7597 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7598 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7599 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7600 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7601 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7602 return;
7603 }
7604
7605 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7606 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7607 continue;
7608 }
7609 }
7610}
7611
7612
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7613/*
7614 * Try to retrieve a known appsession in the URI, then the associated server.
7615 * If the server is found, it's assigned to the session.
7616 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7617void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7618{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7619 char *end_params, *first_param, *cur_param, *next_param;
7620 char separator;
7621 int value_len;
7622
7623 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7624
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7625 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7626 (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]7627 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7628 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7629
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7630 first_param = NULL;
7631 switch (mode) {
7632 case PR_O2_AS_M_PP:
7633 first_param = memchr(begin, ';', len);
7634 break;
7635 case PR_O2_AS_M_QS:
7636 first_param = memchr(begin, '?', len);
7637 break;
7638 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7639
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7640 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7641 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7642 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7643
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7644 switch (mode) {
7645 case PR_O2_AS_M_PP:
7646 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7647 end_params = (char *) begin + len;
7648 }
7649 separator = ';';
7650 break;
7651 case PR_O2_AS_M_QS:
7652 end_params = (char *) begin + len;
7653 separator = '&';
7654 break;
7655 default:
7656 /* unknown mode, shouldn't happen */
7657 return;
7658 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7659
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7660 cur_param = next_param = end_params;
7661 while (cur_param > first_param) {
7662 cur_param--;
7663 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7664 /* let's see if this is the appsession parameter */
7665 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7666 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7667 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7668 /* Cool... it's the right one */
7669 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7670 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7671 if (value_len > 0) {
7672 manage_client_side_appsession(t, cur_param, value_len);
7673 }
7674 break;
7675 }
7676 next_param = cur_param;
7677 }
7678 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7679#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7680 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7681 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7682#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7683}
7684
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7685/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7686 * 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]7687 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7688 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7689 * 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]7690 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7691 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7692 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7693 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7694int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7695{
7696 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7697 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7698 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7699 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7700
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7701 if (!uri_auth)
7702 return 0;
7703
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7704 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]7705 return 0;
7706
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7707 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7708 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]7709 si->applet.ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7710
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7711 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7712 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7713 return 0;
7714
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7715 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7716 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7717 return 0;
7718
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7719 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7720 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7721 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7722 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7723 break;
7724 }
7725 h++;
7726 }
7727
7728 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7729 h = uri + uri_auth->uri_len;
7730 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7731 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7732 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7733 break;
7734 }
7735 h++;
7736 }
7737 }
7738
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7739 h = uri + uri_auth->uri_len;
7740 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7741 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau354898b2012-12-23 18:15:23 +0100[diff] [blame]7742 si->applet.ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7743 break;
7744 }
7745 h++;
7746 }
7747
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7748 h = uri + uri_auth->uri_len;
7749 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7750 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7751 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7752 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7753 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7754 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7755 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7756 si->applet.ctx.stats.st_code = i;
7757 break;
7758 }
7759 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7760 break;
7761 }
7762 h++;
7763 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7764 return 1;
7765}
7766
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7767/*
7768 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7769 * By default it tries to report the error position as msg->err_pos. However if
7770 * this one is not set, it will then report msg->next, which is the last known
7771 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7772 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7773 */
7774void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7775 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7776 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7777{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7778 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7779 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7780
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7781 es->len = MIN(chn->buf->i, sizeof(es->buf));
7782 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7783 len1 = MIN(len1, es->len);
7784 len2 = es->len - len1; /* remaining data if buffer wraps */
7785
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7786 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7787 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7788 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7789
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7790 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7791 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7792 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7793 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7794
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7795 es->when = date; // user-visible date
7796 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7797 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7798 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7799 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7800 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7801 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7802 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7803 es->s_flags = s->flags;
7804 es->t_flags = s->txn.flags;
7805 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7806 es->b_out = chn->buf->o;
7807 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7808 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7809 es->m_clen = msg->chunk_len;
7810 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7811}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7812
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7813/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7814 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7815 * performed over the whole headers. Otherwise it must contain a valid header
7816 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7817 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7818 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7819 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7820 * -1.
7821 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7822 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7823unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7824 struct hdr_idx *idx, int occ,
7825 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7826{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7827 struct hdr_ctx local_ctx;
7828 char *ptr_hist[MAX_HDR_HISTORY];
7829 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7830 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7831 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7832
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7833 if (!ctx) {
7834 local_ctx.idx = 0;
7835 ctx = &local_ctx;
7836 }
7837
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7838 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7839 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7840 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7841 occ--;
7842 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7843 *vptr = ctx->line + ctx->val;
7844 *vlen = ctx->vlen;
7845 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7846 }
7847 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7848 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7849 }
7850
7851 /* negative occurrence, we scan all the list then walk back */
7852 if (-occ > MAX_HDR_HISTORY)
7853 return 0;
7854
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7855 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7856 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7857 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7858 len_hist[hist_ptr] = ctx->vlen;
7859 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7860 hist_ptr = 0;
7861 found++;
7862 }
7863 if (-occ > found)
7864 return 0;
7865 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7866 * find occurrence -occ, so we have to check [hist_ptr+occ].
7867 */
7868 hist_ptr += occ;
7869 if (hist_ptr >= MAX_HDR_HISTORY)
7870 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7871 *vptr = ptr_hist[hist_ptr];
7872 *vlen = len_hist[hist_ptr];
7873 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7874}
7875
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7876/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7877 * Print a debug line with a header. Always stop at the first CR or LF char,
7878 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7879 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7880 */
7881void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7882{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7883 int max;
7884 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7885 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7886 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7887
7888 for (max = 0; start + max < end; max++)
7889 if (start[max] == '\r' || start[max] == '\n')
7890 break;
7891
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7892 UBOUND(max, trash.size - trash.len - 3);
7893 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7894 trash.str[trash.len++] = '\n';
7895 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7896}
7897
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7898/*
7899 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7900 * the required fields are properly allocated and that we only need to (re)init
7901 * them. This should be used before processing any new request.
7902 */
7903void http_init_txn(struct session *s)
7904{
7905 struct http_txn *txn = &s->txn;
7906 struct proxy *fe = s->fe;
7907
7908 txn->flags = 0;
7909 txn->status = -1;
7910
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7911 global.req_count++;
7912
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7913 txn->cookie_first_date = 0;
7914 txn->cookie_last_date = 0;
7915
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7916 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7917 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7918 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7919 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7920 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7921 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7922 txn->req.chunk_len = 0LL;
7923 txn->req.body_len = 0LL;
7924 txn->rsp.chunk_len = 0LL;
7925 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7926 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7927 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7928 txn->req.chn = s->req;
7929 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7930
7931 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7932
7933 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7934 if (fe->options2 & PR_O2_REQBUG_OK)
7935 txn->req.err_pos = -1; /* let buggy requests pass */
7936
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7937 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7938 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7939
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7940 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7941 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7942
7943 if (txn->hdr_idx.v)
7944 hdr_idx_init(&txn->hdr_idx);
7945}
7946
7947/* to be used at the end of a transaction */
7948void http_end_txn(struct session *s)
7949{
7950 struct http_txn *txn = &s->txn;
7951
7952 /* these ones will have been dynamically allocated */
7953 pool_free2(pool2_requri, txn->uri);
7954 pool_free2(pool2_capture, txn->cli_cookie);
7955 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7956 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7957 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7958
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7959 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7960 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7961 txn->uri = NULL;
7962 txn->srv_cookie = NULL;
7963 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7964
7965 if (txn->req.cap) {
7966 struct cap_hdr *h;
7967 for (h = s->fe->req_cap; h; h = h->next)
7968 pool_free2(h->pool, txn->req.cap[h->index]);
7969 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7970 }
7971
7972 if (txn->rsp.cap) {
7973 struct cap_hdr *h;
7974 for (h = s->fe->rsp_cap; h; h = h->next)
7975 pool_free2(h->pool, txn->rsp.cap[h->index]);
7976 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7977 }
7978
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7979}
7980
7981/* to be used at the end of a transaction to prepare a new one */
7982void http_reset_txn(struct session *s)
7983{
7984 http_end_txn(s);
7985 http_init_txn(s);
7986
7987 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7988 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7989 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7990 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7991 /* re-init store persistence */
7992 s->store_count = 0;
7993
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7994 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7995
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7996 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7997
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7998 /* We must trim any excess data from the response buffer, because we
7999 * may have blocked an invalid response from a server that we don't
8000 * want to accidentely forward once we disable the analysers, nor do
8001 * we want those data to come along with next response. A typical
8002 * example of such data would be from a buggy server responding to
8003 * a HEAD with some data, or sending more than the advertised
8004 * content-length.
8005 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8006 if (unlikely(s->rep->buf->i))
8007 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8008
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8009 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8010 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8011
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8012 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8013 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8014
8015 s->req->rex = TICK_ETERNITY;
8016 s->req->wex = TICK_ETERNITY;
8017 s->req->analyse_exp = TICK_ETERNITY;
8018 s->rep->rex = TICK_ETERNITY;
8019 s->rep->wex = TICK_ETERNITY;
8020 s->rep->analyse_exp = TICK_ETERNITY;
8021}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8022
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8023void free_http_req_rules(struct list *r) {
8024 struct http_req_rule *tr, *pr;
8025
8026 list_for_each_entry_safe(pr, tr, r, list) {
8027 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8028 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8029 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8030
8031 free(pr);
8032 }
8033}
8034
8035struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8036{
8037 struct http_req_rule *rule;
8038 int cur_arg;
8039
8040 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8041 if (!rule) {
8042 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8043 return NULL;
8044 }
8045
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8046 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8047 rule->action = HTTP_REQ_ACT_ALLOW;
8048 cur_arg = 1;
8049 } else if (!strcmp(args[0], "deny")) {
8050 rule->action = HTTP_REQ_ACT_DENY;
8051 cur_arg = 1;
8052 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8053 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8054 cur_arg = 1;
8055
8056 while(*args[cur_arg]) {
8057 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8058 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8059 cur_arg+=2;
8060 continue;
8061 } else
8062 break;
8063 }
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8064 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8065 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8066 cur_arg = 1;
8067
8068 if (!*args[cur_arg] || !*args[cur_arg+1] || *args[cur_arg+2]) {
8069 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8070 file, linenum, args[0]);
8071 return NULL;
8072 }
8073
8074 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8075 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8076 LIST_INIT(&rule->arg.hdr_add.fmt);
8077 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, PR_MODE_HTTP);
8078 cur_arg += 2;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8079 } else {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8080 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'add-header', 'set-header', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8081 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8082 return NULL;
8083 }
8084
8085 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8086 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8087 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8088
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8089 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8090 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8091 file, linenum, args[0], errmsg);
8092 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8093 return NULL;
8094 }
8095 rule->cond = cond;
8096 }
8097 else if (*args[cur_arg]) {
8098 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8099 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8100 file, linenum, args[0], args[cur_arg]);
8101 return NULL;
8102 }
8103
8104 return rule;
8105}
8106
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame^]8107/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
8108 * with <err> filled with the error message.
8109 */
8110struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
8111 const char **args, char **errmsg)
8112{
8113 struct redirect_rule *rule;
8114 int cur_arg;
8115 int type = REDIRECT_TYPE_NONE;
8116 int code = 302;
8117 const char *destination = NULL;
8118 const char *cookie = NULL;
8119 int cookie_set = 0;
8120 unsigned int flags = REDIRECT_FLAG_NONE;
8121 struct acl_cond *cond = NULL;
8122
8123 cur_arg = 0;
8124 while (*(args[cur_arg])) {
8125 if (strcmp(args[cur_arg], "location") == 0) {
8126 if (!*args[cur_arg + 1])
8127 goto missing_arg;
8128
8129 type = REDIRECT_TYPE_LOCATION;
8130 cur_arg++;
8131 destination = args[cur_arg];
8132 }
8133 else if (strcmp(args[cur_arg], "prefix") == 0) {
8134 if (!*args[cur_arg + 1])
8135 goto missing_arg;
8136
8137 type = REDIRECT_TYPE_PREFIX;
8138 cur_arg++;
8139 destination = args[cur_arg];
8140 }
8141 else if (strcmp(args[cur_arg], "scheme") == 0) {
8142 if (!*args[cur_arg + 1])
8143 goto missing_arg;
8144
8145 type = REDIRECT_TYPE_SCHEME;
8146 cur_arg++;
8147 destination = args[cur_arg];
8148 }
8149 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8150 if (!*args[cur_arg + 1])
8151 goto missing_arg;
8152
8153 cur_arg++;
8154 cookie = args[cur_arg];
8155 cookie_set = 1;
8156 }
8157 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8158 if (!*args[cur_arg + 1])
8159 goto missing_arg;
8160
8161 cur_arg++;
8162 cookie = args[cur_arg];
8163 cookie_set = 0;
8164 }
8165 else if (strcmp(args[cur_arg], "code") == 0) {
8166 if (!*args[cur_arg + 1])
8167 goto missing_arg;
8168
8169 cur_arg++;
8170 code = atol(args[cur_arg]);
8171 if (code < 301 || code > 303) {
8172 memprintf(errmsg,
8173 "'%s': unsupported HTTP code '%s' (must be a number between 301 and 303)",
8174 args[cur_arg - 1], args[cur_arg]);
8175 return NULL;
8176 }
8177 }
8178 else if (!strcmp(args[cur_arg],"drop-query")) {
8179 flags |= REDIRECT_FLAG_DROP_QS;
8180 }
8181 else if (!strcmp(args[cur_arg],"append-slash")) {
8182 flags |= REDIRECT_FLAG_APPEND_SLASH;
8183 }
8184 else if (strcmp(args[cur_arg], "if") == 0 ||
8185 strcmp(args[cur_arg], "unless") == 0) {
8186 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8187 if (!cond) {
8188 memprintf(errmsg, "error in condition: %s", *errmsg);
8189 return NULL;
8190 }
8191 break;
8192 }
8193 else {
8194 memprintf(errmsg,
8195 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8196 args[cur_arg]);
8197 return NULL;
8198 }
8199 cur_arg++;
8200 }
8201
8202 if (type == REDIRECT_TYPE_NONE) {
8203 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8204 return NULL;
8205 }
8206
8207 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8208 rule->cond = cond;
8209 rule->rdr_str = strdup(destination);
8210 rule->rdr_len = strlen(destination);
8211 if (cookie) {
8212 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8213 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8214 */
8215 rule->cookie_len = strlen(cookie);
8216 if (cookie_set) {
8217 rule->cookie_str = malloc(rule->cookie_len + 10);
8218 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8219 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8220 rule->cookie_len += 9;
8221 } else {
8222 rule->cookie_str = malloc(rule->cookie_len + 21);
8223 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8224 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8225 rule->cookie_len += 20;
8226 }
8227 }
8228 rule->type = type;
8229 rule->code = code;
8230 rule->flags = flags;
8231 LIST_INIT(&rule->list);
8232 return rule;
8233
8234 missing_arg:
8235 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8236 return NULL;
8237}
8238
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8239/************************************************************************/
8240/* The code below is dedicated to ACL parsing and matching */
8241/************************************************************************/
8242
8243
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8244/* This function ensures that the prerequisites for an L7 fetch are ready,
8245 * which means that a request or response is ready. If some data is missing,
8246 * 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]8247 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8248 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8249 *
8250 * The function returns :
8251 * 0 if some data is missing or if the requested data cannot be fetched
8252 * -1 if it is certain that we'll never have any HTTP message there
8253 * 1 if an HTTP message is ready
8254 */
8255static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8256acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8257 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8258{
8259 struct http_txn *txn = l7;
8260 struct http_msg *msg = &txn->req;
8261
8262 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8263 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8264 */
8265
8266 if (unlikely(!s || !txn))
8267 return 0;
8268
8269 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8270 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8271
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8272 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8273 if (unlikely(!s->req))
8274 return 0;
8275
8276 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8277 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8278 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8279 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8280 return -1;
8281 }
8282
8283 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8284 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8285 http_msg_analyzer(msg, &txn->hdr_idx);
8286
8287 /* Still no valid request ? */
8288 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8289 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8290 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8291 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8292 return -1;
8293 }
8294 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8295 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8296 return 0;
8297 }
8298
8299 /* OK we just got a valid HTTP request. We have some minor
8300 * preparation to perform so that further checks can rely
8301 * on HTTP tests.
8302 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8303 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8304 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8305 s->flags |= SN_REDIRECTABLE;
8306
8307 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8308 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8309 return -1;
8310 }
8311 }
8312
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8313 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8314 return 0; /* data might have moved and indexes changed */
8315
8316 /* otherwise everything's ready for the request */
8317 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8318 else {
8319 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8320 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8321 return 0;
8322 }
8323
8324 /* everything's OK */
8325 return 1;
8326}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8327
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8328#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8329 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]8330
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8331#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8332 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]8333
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8334
8335/* 1. Check on METHOD
8336 * We use the pre-parsed method if it is known, and store its number as an
8337 * integer. If it is unknown, we use the pointer and the length.
8338 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8339static 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]8340{
8341 int len, meth;
8342
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8343 len = strlen(*text);
8344 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8345
8346 pattern->val.i = meth;
8347 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8348 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8349 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8350 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8351 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8352 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8353 pattern->len = len;
8354 }
8355 return 1;
8356}
8357
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8358/* This function fetches the method of current HTTP request and stores
8359 * it in the global pattern struct as a chunk. There are two possibilities :
8360 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8361 * in <len> and <ptr> is NULL ;
8362 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8363 * <len> to its length.
8364 * This is intended to be used with acl_match_meth() only.
8365 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8366static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8367acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8368 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8369{
8370 int meth;
8371 struct http_txn *txn = l7;
8372
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8373 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8374
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8375 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8376 smp->type = SMP_T_UINT;
8377 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8378 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8379 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8380 /* ensure the indexes are not affected */
8381 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8382 smp->type = SMP_T_CSTR;
8383 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8384 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8385 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8386 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8387 return 1;
8388}
8389
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8390/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8391static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8392{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8393 int icase;
8394
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8395
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8396 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8397 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8398 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8399 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8400 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8401 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8402
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8403 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8404 if (pattern->val.i != HTTP_METH_OTHER)
8405 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8406
8407 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8408 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8409 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8410
8411 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8412 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8413 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8414 return ACL_PAT_FAIL;
8415 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8416}
8417
8418/* 2. Check on Request/Status Version
8419 * We simply compare strings here.
8420 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8421static 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]8422{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8423 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8424 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8425 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8426 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8427 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8428 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8429 return 1;
8430}
8431
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8432static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8433acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8434 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8435{
8436 struct http_txn *txn = l7;
8437 char *ptr;
8438 int len;
8439
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8440 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8441
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8442 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8443 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8444
8445 while ((len-- > 0) && (*ptr++ != '/'));
8446 if (len <= 0)
8447 return 0;
8448
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8449 smp->type = SMP_T_CSTR;
8450 smp->data.str.str = ptr;
8451 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8452
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8453 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8454 return 1;
8455}
8456
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8457static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8458acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8459 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8460{
8461 struct http_txn *txn = l7;
8462 char *ptr;
8463 int len;
8464
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8465 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8466
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8467 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8468 return 0;
8469
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8470 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8471 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8472
8473 while ((len-- > 0) && (*ptr++ != '/'));
8474 if (len <= 0)
8475 return 0;
8476
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8477 smp->type = SMP_T_CSTR;
8478 smp->data.str.str = ptr;
8479 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8480
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8481 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8482 return 1;
8483}
8484
8485/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8486static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8487acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8488 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8489{
8490 struct http_txn *txn = l7;
8491 char *ptr;
8492 int len;
8493
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8494 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8495
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8496 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8497 return 0;
8498
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8499 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8500 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8501
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8502 smp->type = SMP_T_UINT;
8503 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8504 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8505 return 1;
8506}
8507
8508/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8509static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8510smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8511 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8512{
8513 struct http_txn *txn = l7;
8514
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8515 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8516
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8517 smp->type = SMP_T_CSTR;
8518 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8519 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8520 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8521 return 1;
8522}
8523
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8524static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8525smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8526 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8527{
8528 struct http_txn *txn = l7;
8529
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8530 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8531
8532 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8533 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8534 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8535 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8536 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8537 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8538
8539 /*
8540 * If we are parsing url in frontend space, we prepare backend stage
8541 * to not parse again the same url ! optimization lazyness...
8542 */
8543 if (px->options & PR_O_HTTP_PROXY)
8544 l4->flags |= SN_ADDR_SET;
8545
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8546 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8547 return 1;
8548}
8549
8550static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8551smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8552 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8553{
8554 struct http_txn *txn = l7;
8555
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8556 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8557
8558 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8559 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]8560 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8561 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]8562
8563 if (px->options & PR_O_HTTP_PROXY)
8564 l4->flags |= SN_ADDR_SET;
8565
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8566 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8567 return 1;
8568}
8569
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8570/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8571 * Accepts an optional argument of type string containing the header field name,
8572 * and an optional argument of type signed or unsigned integer to request an
8573 * explicit occurrence of the header. Note that in the event of a missing name,
8574 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8575 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8576static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8577smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8578 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8579{
8580 struct http_txn *txn = l7;
8581 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8582 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8583 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]8584 int occ = 0;
8585 const char *name_str = NULL;
8586 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8587
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8588 if (args) {
8589 if (args[0].type != ARGT_STR)
8590 return 0;
8591 name_str = args[0].data.str.str;
8592 name_len = args[0].data.str.len;
8593
8594 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8595 occ = args[1].data.uint;
8596 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8597
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8598 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8599
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8600 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8601 /* search for header from the beginning */
8602 ctx->idx = 0;
8603
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8604 if (!occ && !(opt & SMP_OPT_ITERATE))
8605 /* no explicit occurrence and single fetch => last header by default */
8606 occ = -1;
8607
8608 if (!occ)
8609 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8610 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8611
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8612 smp->type = SMP_T_CSTR;
8613 smp->flags |= SMP_F_VOL_HDR;
8614 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]8615 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8616
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8617 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8618 return 0;
8619}
8620
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8621/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8622 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8623 */
8624static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8625smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8626 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8627{
8628 struct http_txn *txn = l7;
8629 struct hdr_idx *idx = &txn->hdr_idx;
8630 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8631 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]8632 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8633
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8634 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8635 return 0;
8636
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8637 CHECK_HTTP_MESSAGE_FIRST();
8638
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8639 ctx.idx = 0;
8640 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8641 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]8642 cnt++;
8643
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8644 smp->type = SMP_T_UINT;
8645 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8646 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8647 return 1;
8648}
8649
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8650/* Fetch an HTTP header's integer value. The integer value is returned. It
8651 * takes a mandatory argument of type string and an optional one of type int
8652 * to designate a specific occurrence. It returns an unsigned integer, which
8653 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8654 */
8655static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8656smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8657 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8658{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8659 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8660
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8661 if (ret > 0) {
8662 smp->type = SMP_T_UINT;
8663 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8664 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8665
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8666 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8667}
8668
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8669/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8670 * and an optional one of type int to designate a specific occurrence.
8671 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8672 */
8673static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8674smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8675 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8676{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8677 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8678
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8679 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8680 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8681 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8682 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8683 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8684 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8685 if (smp->data.str.len < temp->size - 1) {
8686 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8687 temp->str[smp->data.str.len] = '\0';
8688 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8689 smp->type = SMP_T_IPV6;
8690 break;
8691 }
8692 }
8693 }
8694
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8695 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8696 if (!(smp->flags & SMP_F_NOT_LAST))
8697 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8698 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8699 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8700}
8701
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8702/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8703 * the first '/' after the possible hostname, and ends before the possible '?'.
8704 */
8705static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8706smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8707 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8708{
8709 struct http_txn *txn = l7;
8710 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8711
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8712 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8713
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8714 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]8715 ptr = http_get_path(txn);
8716 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8717 return 0;
8718
8719 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8720 smp->type = SMP_T_CSTR;
8721 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8722
8723 while (ptr < end && *ptr != '?')
8724 ptr++;
8725
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8726 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8727 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8728 return 1;
8729}
8730
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8731/* This produces a concatenation of the first occurrence of the Host header
8732 * followed by the path component if it begins with a slash ('/'). This means
8733 * that '*' will not be added, resulting in exactly the first Host entry.
8734 * If no Host header is found, then the path is returned as-is. The returned
8735 * value is stored in the trash so it does not need to be marked constant.
8736 */
8737static int
8738smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8739 const struct arg *args, struct sample *smp)
8740{
8741 struct http_txn *txn = l7;
8742 char *ptr, *end, *beg;
8743 struct hdr_ctx ctx;
8744
8745 CHECK_HTTP_MESSAGE_FIRST();
8746
8747 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8748 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]8749 !ctx.vlen)
8750 return smp_fetch_path(px, l4, l7, opt, args, smp);
8751
8752 /* 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]8753 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8754 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8755 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8756 smp->data.str.len = ctx.vlen;
8757
8758 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8759 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]8760 beg = http_get_path(txn);
8761 if (!beg)
8762 beg = end;
8763
8764 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8765
8766 if (beg < ptr && *beg == '/') {
8767 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8768 smp->data.str.len += ptr - beg;
8769 }
8770
8771 smp->flags = SMP_F_VOL_1ST;
8772 return 1;
8773}
8774
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]8775/* This produces a 32-bit hash of the concatenation of the first occurrence of
8776 * the Host header followed by the path component if it begins with a slash ('/').
8777 * This means that '*' will not be added, resulting in exactly the first Host
8778 * entry. If no Host header is found, then the path is used. The resulting value
8779 * is hashed using the url hash followed by a full avalanche hash and provides a
8780 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
8781 * high-traffic sites without having to store whole paths.
8782 */
8783static int
8784smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8785 const struct arg *args, struct sample *smp)
8786{
8787 struct http_txn *txn = l7;
8788 struct hdr_ctx ctx;
8789 unsigned int hash = 0;
8790 char *ptr, *beg, *end;
8791 int len;
8792
8793 CHECK_HTTP_MESSAGE_FIRST();
8794
8795 ctx.idx = 0;
8796 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
8797 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8798 ptr = ctx.line + ctx.val;
8799 len = ctx.vlen;
8800 while (len--)
8801 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
8802 }
8803
8804 /* now retrieve the path */
8805 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
8806 beg = http_get_path(txn);
8807 if (!beg)
8808 beg = end;
8809
8810 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8811
8812 if (beg < ptr && *beg == '/') {
8813 while (beg < ptr)
8814 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
8815 }
8816 hash = full_hash(hash);
8817
8818 smp->type = SMP_T_UINT;
8819 smp->data.uint = hash;
8820 smp->flags = SMP_F_VOL_1ST;
8821 return 1;
8822}
8823
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8824/* This concatenates the source address with the 32-bit hash of the Host and
8825 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
8826 * per-url counters. The result is a binary block from 8 to 20 bytes depending
8827 * on the source address length. The URL hash is stored before the address so
8828 * that in environments where IPv6 is insignificant, truncating the output to
8829 * 8 bytes would still work.
8830 */
8831static int
8832smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8833 const struct arg *args, struct sample *smp)
8834{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8835 struct chunk *temp;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8836
8837 if (!smp_fetch_base32(px, l4, l7, opt, args, smp))
8838 return 0;
8839
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8840 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8841 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
8842 temp->len += sizeof(smp->data.uint);
8843
8844 switch (l4->si[0].conn->addr.from.ss_family) {
8845 case AF_INET:
8846 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
8847 temp->len += 4;
8848 break;
8849 case AF_INET6:
8850 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
8851 temp->len += 16;
8852 break;
8853 default:
8854 return 0;
8855 }
8856
8857 smp->data.str = *temp;
8858 smp->type = SMP_T_BIN;
8859 return 1;
8860}
8861
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8862static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8863acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8864 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8865{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8866 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8867 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8868 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8869
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8870 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8871
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8872 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8873 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8874 return 1;
8875}
8876
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8877/* return a valid test if the current request is the first one on the connection */
8878static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8879acl_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]8880 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8881{
8882 if (!s)
8883 return 0;
8884
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8885 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8886 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8887 return 1;
8888}
8889
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8890/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8891static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8892acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8893 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8894{
8895
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8896 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8897 return 0;
8898
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8899 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8900
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8901 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8902 return 0;
8903
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8904 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8905 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]8906 return 1;
8907}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8908
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8909/* Accepts exactly 1 argument of type userlist */
8910static int
8911acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8912 const struct arg *args, struct sample *smp)
8913{
8914
8915 if (!args || args->type != ARGT_USR)
8916 return 0;
8917
8918 CHECK_HTTP_MESSAGE_FIRST();
8919
8920 if (!get_http_auth(l4))
8921 return 0;
8922
8923 /* acl_match_auth() will need several information at once */
8924 smp->ctx.a[0] = args->data.usr; /* user list */
8925 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8926 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8927
8928 /* if the user does not belong to the userlist or has a wrong password,
8929 * report that it unconditionally does not match. Otherwise we return
8930 * a non-zero integer which will be ignored anyway since all the params
8931 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8932 */
8933 smp->type = SMP_T_BOOL;
8934 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8935 if (smp->data.uint)
8936 smp->type = SMP_T_UINT;
8937
8938 return 1;
8939}
8940
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8941/* Try to find the next occurrence of a cookie name in a cookie header value.
8942 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8943 * the cookie value is returned into *value and *value_l, and the function
8944 * returns a pointer to the next pointer to search from if the value was found.
8945 * Otherwise if the cookie was not found, NULL is returned and neither value
8946 * nor value_l are touched. The input <hdr> string should first point to the
8947 * header's value, and the <hdr_end> pointer must point to the first character
8948 * not part of the value. <list> must be non-zero if value may represent a list
8949 * of values (cookie headers). This makes it faster to abort parsing when no
8950 * list is expected.
8951 */
8952static char *
8953extract_cookie_value(char *hdr, const char *hdr_end,
8954 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8955 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8956{
8957 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8958 char *next;
8959
8960 /* we search at least a cookie name followed by an equal, and more
8961 * generally something like this :
8962 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8963 */
8964 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8965 /* Iterate through all cookies on this line */
8966
8967 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8968 att_beg++;
8969
8970 /* find att_end : this is the first character after the last non
8971 * space before the equal. It may be equal to hdr_end.
8972 */
8973 equal = att_end = att_beg;
8974
8975 while (equal < hdr_end) {
8976 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8977 break;
8978 if (http_is_spht[(unsigned char)*equal++])
8979 continue;
8980 att_end = equal;
8981 }
8982
8983 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8984 * is between <att_beg> and <equal>, both may be identical.
8985 */
8986
8987 /* look for end of cookie if there is an equal sign */
8988 if (equal < hdr_end && *equal == '=') {
8989 /* look for the beginning of the value */
8990 val_beg = equal + 1;
8991 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8992 val_beg++;
8993
8994 /* find the end of the value, respecting quotes */
8995 next = find_cookie_value_end(val_beg, hdr_end);
8996
8997 /* make val_end point to the first white space or delimitor after the value */
8998 val_end = next;
8999 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9000 val_end--;
9001 } else {
9002 val_beg = val_end = next = equal;
9003 }
9004
9005 /* We have nothing to do with attributes beginning with '$'. However,
9006 * they will automatically be removed if a header before them is removed,
9007 * since they're supposed to be linked together.
9008 */
9009 if (*att_beg == '$')
9010 continue;
9011
9012 /* Ignore cookies with no equal sign */
9013 if (equal == next)
9014 continue;
9015
9016 /* Now we have the cookie name between att_beg and att_end, and
9017 * its value between val_beg and val_end.
9018 */
9019
9020 if (att_end - att_beg == cookie_name_l &&
9021 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9022 /* let's return this value and indicate where to go on from */
9023 *value = val_beg;
9024 *value_l = val_end - val_beg;
9025 return next + 1;
9026 }
9027
9028 /* Set-Cookie headers only have the name in the first attr=value part */
9029 if (!list)
9030 break;
9031 }
9032
9033 return NULL;
9034}
9035
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9036/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9037 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
9038 * 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]9039 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9040 * 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]9041 * Accepts exactly 1 argument of type string. If the input options indicate
9042 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9043 */
9044static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9045smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9046 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9047{
9048 struct http_txn *txn = l7;
9049 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9050 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9051 const struct http_msg *msg;
9052 const char *hdr_name;
9053 int hdr_name_len;
9054 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9055 int occ = 0;
9056 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9057
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9058 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9059 return 0;
9060
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9061 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9062
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9063 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9064 msg = &txn->req;
9065 hdr_name = "Cookie";
9066 hdr_name_len = 6;
9067 } else {
9068 msg = &txn->rsp;
9069 hdr_name = "Set-Cookie";
9070 hdr_name_len = 10;
9071 }
9072
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9073 if (!occ && !(opt & SMP_OPT_ITERATE))
9074 /* no explicit occurrence and single fetch => last cookie by default */
9075 occ = -1;
9076
9077 /* OK so basically here, either we want only one value and it's the
9078 * last one, or we want to iterate over all of them and we fetch the
9079 * next one.
9080 */
9081
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9082 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9083 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9084 /* search for the header from the beginning, we must first initialize
9085 * the search parameters.
9086 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9087 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9088 ctx->idx = 0;
9089 }
9090
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9091 smp->flags |= SMP_F_VOL_HDR;
9092
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9093 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9094 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9095 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9096 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9097 goto out;
9098
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9099 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9100 continue;
9101
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9102 smp->ctx.a[0] = ctx->line + ctx->val;
9103 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9104 }
9105
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9106 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9107 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]9108 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9109 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9110 &smp->data.str.str,
9111 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9112 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9113 found = 1;
9114 if (occ >= 0) {
9115 /* one value was returned into smp->data.str.{str,len} */
9116 smp->flags |= SMP_F_NOT_LAST;
9117 return 1;
9118 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9119 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9120 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9121 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9122 /* all cookie headers and values were scanned. If we're looking for the
9123 * last occurrence, we may return it now.
9124 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9125 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9126 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9127 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9128}
9129
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9130/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9131 * 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]9132 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9133 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9134 */
9135static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9136acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9137 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9138{
9139 struct http_txn *txn = l7;
9140 struct hdr_idx *idx = &txn->hdr_idx;
9141 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9142 const struct http_msg *msg;
9143 const char *hdr_name;
9144 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9145 int cnt;
9146 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9147 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9148
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9149 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9150 return 0;
9151
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9152 CHECK_HTTP_MESSAGE_FIRST();
9153
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9154 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9155 msg = &txn->req;
9156 hdr_name = "Cookie";
9157 hdr_name_len = 6;
9158 } else {
9159 msg = &txn->rsp;
9160 hdr_name = "Set-Cookie";
9161 hdr_name_len = 10;
9162 }
9163
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9164 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9165 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9166 ctx.idx = 0;
9167 cnt = 0;
9168
9169 while (1) {
9170 /* Note: val_beg == NULL every time we need to fetch a new header */
9171 if (!val_beg) {
9172 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9173 break;
9174
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9175 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9176 continue;
9177
9178 val_beg = ctx.line + ctx.val;
9179 val_end = val_beg + ctx.vlen;
9180 }
9181
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9182 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9183 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9184 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9185 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9186 &smp->data.str.str,
9187 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9188 cnt++;
9189 }
9190 }
9191
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9192 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9193 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9194 return 1;
9195}
9196
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9197/* Fetch an cookie's integer value. The integer value is returned. It
9198 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9199 */
9200static int
9201smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9202 const struct arg *args, struct sample *smp)
9203{
9204 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
9205
9206 if (ret > 0) {
9207 smp->type = SMP_T_UINT;
9208 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9209 }
9210
9211 return ret;
9212}
9213
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9214/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9215/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9216/************************************************************************/
9217
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9218/*
9219 * Given a path string and its length, find the position of beginning of the
9220 * query string. Returns NULL if no query string is found in the path.
9221 *
9222 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9223 *
9224 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9225 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9226static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9227{
9228 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9229
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9230 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9231 return p ? p + 1 : NULL;
9232}
9233
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9234static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9235{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9236 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9237}
9238
9239/*
9240 * Given a url parameter, find the starting position of the first occurence,
9241 * or NULL if the parameter is not found.
9242 *
9243 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9244 * the function will return query_string+8.
9245 */
9246static char*
9247find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9248 char* url_param_name, size_t url_param_name_l,
9249 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9250{
9251 char *pos, *last;
9252
9253 pos = query_string;
9254 last = query_string + query_string_l - url_param_name_l - 1;
9255
9256 while (pos <= last) {
9257 if (pos[url_param_name_l] == '=') {
9258 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9259 return pos;
9260 pos += url_param_name_l + 1;
9261 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9262 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9263 pos++;
9264 pos++;
9265 }
9266 return NULL;
9267}
9268
9269/*
9270 * Given a url parameter name, returns its value and size into *value and
9271 * *value_l respectively, and returns non-zero. If the parameter is not found,
9272 * zero is returned and value/value_l are not touched.
9273 */
9274static int
9275find_url_param_value(char* path, size_t path_l,
9276 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9277 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9278{
9279 char *query_string, *qs_end;
9280 char *arg_start;
9281 char *value_start, *value_end;
9282
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9283 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9284 if (!query_string)
9285 return 0;
9286
9287 qs_end = path + path_l;
9288 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9289 url_param_name, url_param_name_l,
9290 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9291 if (!arg_start)
9292 return 0;
9293
9294 value_start = arg_start + url_param_name_l + 1;
9295 value_end = value_start;
9296
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9297 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9298 value_end++;
9299
9300 *value = value_start;
9301 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9302 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9303}
9304
9305static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9306smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9307 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9308{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9309 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9310 struct http_txn *txn = l7;
9311 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9312
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9313 if (!args || args[0].type != ARGT_STR ||
9314 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9315 return 0;
9316
9317 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9318
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9319 if (args[1].type)
9320 delim = *args[1].data.str.str;
9321
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9322 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]9323 args->data.str.str, args->data.str.len,
9324 &smp->data.str.str, &smp->data.str.len,
9325 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9326 return 0;
9327
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9328 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9329 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9330 return 1;
9331}
9332
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9333/* Return the signed integer value for the specified url parameter (see url_param
9334 * above).
9335 */
9336static int
9337smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9338 const struct arg *args, struct sample *smp)
9339{
9340 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
9341
9342 if (ret > 0) {
9343 smp->type = SMP_T_UINT;
9344 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9345 }
9346
9347 return ret;
9348}
9349
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9350/* This function is used to validate the arguments passed to any "hdr" fetch
9351 * keyword. These keywords support an optional positive or negative occurrence
9352 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9353 * is assumed that the types are already the correct ones. Returns 0 on error,
9354 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9355 * error message in case of error, that the caller is responsible for freeing.
9356 * The initial location must either be freeable or NULL.
9357 */
9358static int val_hdr(struct arg *arg, char **err_msg)
9359{
9360 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9361 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9362 return 0;
9363 }
9364 return 1;
9365}
9366
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9367/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9368/* All supported ACL keywords must be declared here. */
9369/************************************************************************/
9370
9371/* Note: must not be declared <const> as its list will be overwritten.
9372 * Please take care of keeping this list alphabetically sorted.
9373 */
9374static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9375 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9376 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9377 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9378 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9379 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9380 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9381 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9382 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
9383
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9384 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9385 { "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]9386 { "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]9387 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9388 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9389 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9390 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9391 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9392 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9393 { "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]9394
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9395 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9396 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9397 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9398 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9399 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9400 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9401 { "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 },
9402 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9403 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9404 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9405 { "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]9406
9407 { "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]9408 { "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]9409 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9410
9411 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
9412
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9413 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9414 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9415 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9416 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9417 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9418 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9419 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9420 { "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]9421
9422 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9423 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9424 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
9425
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9426 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9427 { "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]9428 { "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]9429 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9430 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9431 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9432 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9433 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9434 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9435 { "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]9436
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9437 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9438 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9439 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9440 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9441 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9442 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9443 { "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 },
9444 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9445 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9446 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9447 { "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]9448
9449 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9450
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9451 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9452 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9453 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9454 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9455 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9456 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9457 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9458 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9459 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9460 { "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]9461
9462 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9463 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9464 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9465 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9466 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9467 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9468 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9469 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9470 { "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]9471 { "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]9472
9473 { NULL, NULL, NULL, NULL },
9474}};
9475
9476/************************************************************************/
9477/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9478/************************************************************************/
9479/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9480static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9481 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9482 { "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]9483 { "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]9484 { "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]9485 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9486 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9487 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9488 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9489 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9490 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9491 { "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]9492 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9493}};
9494
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9495
9496__attribute__((constructor))
9497static void __http_protocol_init(void)
9498{
9499 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9500 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9501}
9502
9503
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9504/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9505 * Local variables:
9506 * c-indent-level: 8
9507 * c-basic-offset: 8
9508 * End:
9509 */