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git01.mediatek.com / haproxy / 2a65ff014ec63e3ea5fc1b491a6ce3dabab65fd8 / . / src / proto_http.c
blob: a2030f6f354dd73c9c9234360db41bd97005c6ce [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>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]51#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]52#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]53#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]55#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]56#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]58#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]60#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]61#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]62#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]63#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/task.h>
65
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]66const char HTTP_100[] =
67 "HTTP/1.1 100 Continue\r\n\r\n";
68
69const struct chunk http_100_chunk = {
70 .str = (char *)&HTTP_100,
71 .len = sizeof(HTTP_100)-1
72};
73
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]74/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]75const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]76 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]77 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]78 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]79 "Location: "; /* not terminated since it will be concatenated with the URL */
80
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]81const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]82 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]84 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]85 "Location: "; /* not terminated since it will be concatenated with the URL */
86
87/* same as 302 except that the browser MUST retry with the GET method */
88const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]89 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]90 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]91 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]92 "Location: "; /* not terminated since it will be concatenated with the URL */
93
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]94/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
95const char *HTTP_401_fmt =
96 "HTTP/1.0 401 Unauthorized\r\n"
97 "Cache-Control: no-cache\r\n"
98 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]99 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]100 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
101 "\r\n"
102 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
103
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]104const char *HTTP_407_fmt =
105 "HTTP/1.0 407 Unauthorized\r\n"
106 "Cache-Control: no-cache\r\n"
107 "Connection: close\r\n"
108 "Content-Type: text/html\r\n"
109 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
110 "\r\n"
111 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
112
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]113
114const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]115 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]116 [HTTP_ERR_400] = 400,
117 [HTTP_ERR_403] = 403,
118 [HTTP_ERR_408] = 408,
119 [HTTP_ERR_500] = 500,
120 [HTTP_ERR_502] = 502,
121 [HTTP_ERR_503] = 503,
122 [HTTP_ERR_504] = 504,
123};
124
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]125static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]126 [HTTP_ERR_200] =
127 "HTTP/1.0 200 OK\r\n"
128 "Cache-Control: no-cache\r\n"
129 "Connection: close\r\n"
130 "Content-Type: text/html\r\n"
131 "\r\n"
132 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
133
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]134 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]135 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]136 "Cache-Control: no-cache\r\n"
137 "Connection: close\r\n"
138 "Content-Type: text/html\r\n"
139 "\r\n"
140 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
141
142 [HTTP_ERR_403] =
143 "HTTP/1.0 403 Forbidden\r\n"
144 "Cache-Control: no-cache\r\n"
145 "Connection: close\r\n"
146 "Content-Type: text/html\r\n"
147 "\r\n"
148 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
149
150 [HTTP_ERR_408] =
151 "HTTP/1.0 408 Request Time-out\r\n"
152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
157
158 [HTTP_ERR_500] =
159 "HTTP/1.0 500 Server Error\r\n"
160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
165
166 [HTTP_ERR_502] =
167 "HTTP/1.0 502 Bad Gateway\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
173
174 [HTTP_ERR_503] =
175 "HTTP/1.0 503 Service Unavailable\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
181
182 [HTTP_ERR_504] =
183 "HTTP/1.0 504 Gateway Time-out\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
189
190};
191
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]192/* status codes available for the stats admin page (strictly 4 chars length) */
193const char *stat_status_codes[STAT_STATUS_SIZE] = {
194 [STAT_STATUS_DENY] = "DENY",
195 [STAT_STATUS_DONE] = "DONE",
196 [STAT_STATUS_ERRP] = "ERRP",
197 [STAT_STATUS_EXCD] = "EXCD",
198 [STAT_STATUS_NONE] = "NONE",
199 [STAT_STATUS_PART] = "PART",
200 [STAT_STATUS_UNKN] = "UNKN",
201};
202
203
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]204/* We must put the messages here since GCC cannot initialize consts depending
205 * on strlen().
206 */
207struct chunk http_err_chunks[HTTP_ERR_SIZE];
208
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]209#define FD_SETS_ARE_BITFIELDS
210#ifdef FD_SETS_ARE_BITFIELDS
211/*
212 * This map is used with all the FD_* macros to check whether a particular bit
213 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
214 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
215 * byte should be encoded. Be careful to always pass bytes from 0 to 255
216 * exclusively to the macros.
217 */
218fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
219fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220
221#else
222#error "Check if your OS uses bitfields for fd_sets"
223#endif
224
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]225void init_proto_http()
226{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]227 int i;
228 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]229 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]230
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]231 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
232 if (!http_err_msgs[msg]) {
233 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
234 abort();
235 }
236
237 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
238 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
239 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]240
241 /* initialize the log header encoding map : '{|}"#' should be encoded with
242 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
243 * URL encoding only requires '"', '#' to be encoded as well as non-
244 * printable characters above.
245 */
246 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
247 memset(url_encode_map, 0, sizeof(url_encode_map));
248 for (i = 0; i < 32; i++) {
249 FD_SET(i, hdr_encode_map);
250 FD_SET(i, url_encode_map);
251 }
252 for (i = 127; i < 256; i++) {
253 FD_SET(i, hdr_encode_map);
254 FD_SET(i, url_encode_map);
255 }
256
257 tmp = "\"#{|}";
258 while (*tmp) {
259 FD_SET(*tmp, hdr_encode_map);
260 tmp++;
261 }
262
263 tmp = "\"#";
264 while (*tmp) {
265 FD_SET(*tmp, url_encode_map);
266 tmp++;
267 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]268
269 /* memory allocations */
270 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]271 pool2_capture = create_pool("capture", CAPTURE_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{
392 int size = 0;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]393 size += snprintf(trash + size, trashlen - size,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]394 "[%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",
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]395 line,
396 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]397 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);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]398 write(-1, trash, size);
399 size = 0;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]400 size += snprintf(trash + size, trashlen - size,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]401 " %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",
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]402 line,
403 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]404 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);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]405
406 write(-1, trash, size);
407}
408#else
409#define http_silent_debug(l,s) do { } while (0)
410#endif
411
412/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]413 * Adds a header and its CRLF at the tail of the message's buffer, just before
414 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]415 * The header is also automatically added to the index <hdr_idx>, and the end
416 * of headers is automatically adjusted. The number of bytes added is returned
417 * on success, otherwise <0 is returned indicating an error.
418 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]419int 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]420{
421 int bytes, len;
422
423 len = strlen(text);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]424 bytes = buffer_insert_line2(&msg->buf->buf, msg->buf->buf.p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]425 if (!bytes)
426 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]427 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]428 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
429}
430
431/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]432 * Adds a header and its CRLF at the tail of the message's buffer, just before
433 * 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]434 * the buffer is only opened and the space reserved, but nothing is copied.
435 * The header is also automatically added to the index <hdr_idx>, and the end
436 * of headers is automatically adjusted. The number of bytes added is returned
437 * on success, otherwise <0 is returned indicating an error.
438 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]439int http_header_add_tail2(struct http_msg *msg,
440 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]441{
442 int bytes;
443
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]444 bytes = buffer_insert_line2(&msg->buf->buf, msg->buf->buf.p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]445 if (!bytes)
446 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]447 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]448 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
449}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]450
451/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]452 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
453 * If so, returns the position of the first non-space character relative to
454 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
455 * to return a pointer to the place after the first space. Returns 0 if the
456 * header name does not match. Checks are case-insensitive.
457 */
458int http_header_match2(const char *hdr, const char *end,
459 const char *name, int len)
460{
461 const char *val;
462
463 if (hdr + len >= end)
464 return 0;
465 if (hdr[len] != ':')
466 return 0;
467 if (strncasecmp(hdr, name, len) != 0)
468 return 0;
469 val = hdr + len + 1;
470 while (val < end && HTTP_IS_SPHT(*val))
471 val++;
472 if ((val >= end) && (len + 2 <= end - hdr))
473 return len + 2; /* we may replace starting from second space */
474 return val - hdr;
475}
476
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]477/* Find the end of the header value contained between <s> and <e>. See RFC2616,
478 * par 2.2 for more information. Note that it requires a valid header to return
479 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]480 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]481char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]482{
483 int quoted, qdpair;
484
485 quoted = qdpair = 0;
486 for (; s < e; s++) {
487 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]488 else if (quoted) {
489 if (*s == '\\') qdpair = 1;
490 else if (*s == '"') quoted = 0;
491 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]492 else if (*s == '"') quoted = 1;
493 else if (*s == ',') return s;
494 }
495 return s;
496}
497
498/* Find the first or next occurrence of header <name> in message buffer <sol>
499 * using headers index <idx>, and return it in the <ctx> structure. This
500 * structure holds everything necessary to use the header and find next
501 * occurrence. If its <idx> member is 0, the header is searched from the
502 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]503 * 1 when it finds a value, and 0 when there is no more. It is designed to work
504 * with headers defined as comma-separated lists. As a special case, if ctx->val
505 * is NULL when searching for a new values of a header, the current header is
506 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]507 */
508int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]509 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]510 struct hdr_ctx *ctx)
511{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]512 char *eol, *sov;
513 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]514
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]515 cur_idx = ctx->idx;
516 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]517 /* We have previously returned a value, let's search
518 * another one on the same line.
519 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]520 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]521 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]522 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]523 eol = sol + idx->v[cur_idx].len;
524
525 if (sov >= eol)
526 /* no more values in this header */
527 goto next_hdr;
528
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]529 /* values remaining for this header, skip the comma but save it
530 * for later use (eg: for header deletion).
531 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]532 sov++;
533 while (sov < eol && http_is_lws[(unsigned char)*sov])
534 sov++;
535
536 goto return_hdr;
537 }
538
539 /* first request for this header */
540 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]541 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]542 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]543 while (cur_idx) {
544 eol = sol + idx->v[cur_idx].len;
545
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]546 if (len == 0) {
547 /* No argument was passed, we want any header.
548 * To achieve this, we simply build a fake request. */
549 while (sol + len < eol && sol[len] != ':')
550 len++;
551 name = sol;
552 }
553
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]554 if ((len < eol - sol) &&
555 (sol[len] == ':') &&
556 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]557 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]558 sov = sol + len + 1;
559 while (sov < eol && http_is_lws[(unsigned char)*sov])
560 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]562 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]563 ctx->prev = old_idx;
564 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]565 ctx->idx = cur_idx;
566 ctx->val = sov - sol;
567
568 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]569 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]570 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]571 eol--;
572 ctx->tws++;
573 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]574 ctx->vlen = eol - sov;
575 return 1;
576 }
577 next_hdr:
578 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]579 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]580 cur_idx = idx->v[cur_idx].next;
581 }
582 return 0;
583}
584
585int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]586 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]587 struct hdr_ctx *ctx)
588{
589 return http_find_header2(name, strlen(name), sol, idx, ctx);
590}
591
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]592/* Remove one value of a header. This only works on a <ctx> returned by one of
593 * the http_find_header functions. The value is removed, as well as surrounding
594 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]595 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]596 * message <msg>. The new index is returned. If it is zero, it means there is
597 * no more header, so any processing may stop. The ctx is always left in a form
598 * that can be handled by http_find_header2() to find next occurrence.
599 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]600int 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]601{
602 int cur_idx = ctx->idx;
603 char *sol = ctx->line;
604 struct hdr_idx_elem *hdr;
605 int delta, skip_comma;
606
607 if (!cur_idx)
608 return 0;
609
610 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]611 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]612 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]613 delta = buffer_replace2(&msg->buf->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]614 http_msg_move_end(msg, delta);
615 idx->used--;
616 hdr->len = 0; /* unused entry */
617 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]618 if (idx->tail == ctx->idx)
619 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]620 ctx->idx = ctx->prev; /* walk back to the end of previous header */
621 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
622 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]623 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]624 return ctx->idx;
625 }
626
627 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]628 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
629 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]630 */
631
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]632 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]633 delta = buffer_replace2(&msg->buf->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]634 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]635 NULL, 0);
636 hdr->len += delta;
637 http_msg_move_end(msg, delta);
638 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]639 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]640 return ctx->idx;
641}
642
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]643/* This function handles a server error at the stream interface level. The
644 * stream interface is assumed to be already in a closed state. An optional
645 * message is copied into the input buffer, and an HTTP status code stored.
646 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]647 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]648 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]649static void http_server_error(struct session *t, struct stream_interface *si,
650 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]651{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]652 channel_auto_read(si->ob);
653 channel_abort(si->ob);
654 channel_auto_close(si->ob);
655 channel_erase(si->ob);
656 channel_auto_close(si->ib);
657 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]658 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]659 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]660 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]661 }
662 if (!(t->flags & SN_ERR_MASK))
663 t->flags |= err;
664 if (!(t->flags & SN_FINST_MASK))
665 t->flags |= finst;
666}
667
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]668/* This function returns the appropriate error location for the given session
669 * and message.
670 */
671
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]672struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]673{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]674 if (s->be->errmsg[msgnum].str)
675 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]676 else if (s->fe->errmsg[msgnum].str)
677 return &s->fe->errmsg[msgnum];
678 else
679 return &http_err_chunks[msgnum];
680}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]681
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]682/*
683 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
684 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
685 */
686static http_meth_t find_http_meth(const char *str, const int len)
687{
688 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]689 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]690
691 m = ((unsigned)*str - 'A');
692
693 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]694 for (h = http_methods[m]; h->len > 0; h++) {
695 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]697 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]698 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]699 };
700 return HTTP_METH_OTHER;
701 }
702 return HTTP_METH_NONE;
703
704}
705
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]706/* Parse the URI from the given transaction (which is assumed to be in request
707 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
708 * It is returned otherwise.
709 */
710static char *
711http_get_path(struct http_txn *txn)
712{
713 char *ptr, *end;
714
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]715 ptr = txn->req.buf->buf.p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]716 end = ptr + txn->req.sl.rq.u_l;
717
718 if (ptr >= end)
719 return NULL;
720
721 /* RFC2616, par. 5.1.2 :
722 * Request-URI = "*" | absuri | abspath | authority
723 */
724
725 if (*ptr == '*')
726 return NULL;
727
728 if (isalpha((unsigned char)*ptr)) {
729 /* this is a scheme as described by RFC3986, par. 3.1 */
730 ptr++;
731 while (ptr < end &&
732 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
733 ptr++;
734 /* skip '://' */
735 if (ptr == end || *ptr++ != ':')
736 return NULL;
737 if (ptr == end || *ptr++ != '/')
738 return NULL;
739 if (ptr == end || *ptr++ != '/')
740 return NULL;
741 }
742 /* skip [user[:passwd]@]host[:[port]] */
743
744 while (ptr < end && *ptr != '/')
745 ptr++;
746
747 if (ptr == end)
748 return NULL;
749
750 /* OK, we got the '/' ! */
751 return ptr;
752}
753
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]754/* Returns a 302 for a redirectable request. This may only be called just after
755 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
756 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]757 * NOTE: this function is designed to support being called once data are scheduled
758 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]760void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]761{
762 struct http_txn *txn;
763 struct chunk rdr;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]764 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]765 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]766 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]767
768 /* 1: create the response header */
769 rdr.len = strlen(HTTP_302);
770 rdr.str = trash;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]771 rdr.size = trashlen;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]772 memcpy(rdr.str, HTTP_302, rdr.len);
773
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]774 srv = target_srv(&s->target);
775
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]776 /* 2: add the server's prefix */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]777 if (rdr.len + srv->rdr_len > rdr.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]778 return;
779
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]780 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]781 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
782 memcpy(rdr.str + rdr.len, srv->rdr_pfx, srv->rdr_len);
783 rdr.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]784 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]785
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]786 /* 3: add the request URI. Since it was already forwarded, we need
787 * to temporarily rewind the buffer.
788 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]789 txn = &s->txn;
Willy Tarreaua75bcef2012-08-24 22:56:11 +0200[diff] [blame]790 b_rew(&s->req->buf, rewind = s->req->buf.o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]791
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 path = http_get_path(txn);
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]793 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]794
Willy Tarreaua75bcef2012-08-24 22:56:11 +0200[diff] [blame]795 b_adv(&s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]796
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]797 if (!path)
798 return;
799
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]800 if (rdr.len + len > rdr.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]801 return;
802
803 memcpy(rdr.str + rdr.len, path, len);
804 rdr.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]805
806 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
807 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
808 rdr.len += 29;
809 } else {
810 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
811 rdr.len += 23;
812 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]813
814 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]815 si_shutr(si);
816 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]817 si->err_type = SI_ET_NONE;
818 si->err_loc = NULL;
819 si->state = SI_ST_CLO;
820
821 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]822 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]823
824 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]825 if (srv)
826 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]827}
828
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]829/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]830 * that the server side is closed. Note that err_type is actually a
831 * bitmask, where almost only aborts may be cumulated with other
832 * values. We consider that aborted operations are more important
833 * than timeouts or errors due to the fact that nobody else in the
834 * logs might explain incomplete retries. All others should avoid
835 * being cumulated. It should normally not be possible to have multiple
836 * aborts at once, but just in case, the first one in sequence is reported.
837 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]838void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]839{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]840 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]841
842 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]843 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]844 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]845 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]846 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]847 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]848 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]849 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]850 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]851 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]852 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]853 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]854 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]855 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]856 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]857 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]858 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]859 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]860 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]861 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]862 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]863}
864
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]865extern const char sess_term_cond[8];
866extern const char sess_fin_state[8];
867extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]868struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]869struct pool_head *pool2_capture;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]870struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]871
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]872/*
873 * Capture headers from message starting at <som> according to header list
874 * <cap_hdr>, and fill the <idx> structure appropriately.
875 */
876void capture_headers(char *som, struct hdr_idx *idx,
877 char **cap, struct cap_hdr *cap_hdr)
878{
879 char *eol, *sol, *col, *sov;
880 int cur_idx;
881 struct cap_hdr *h;
882 int len;
883
884 sol = som + hdr_idx_first_pos(idx);
885 cur_idx = hdr_idx_first_idx(idx);
886
887 while (cur_idx) {
888 eol = sol + idx->v[cur_idx].len;
889
890 col = sol;
891 while (col < eol && *col != ':')
892 col++;
893
894 sov = col + 1;
895 while (sov < eol && http_is_lws[(unsigned char)*sov])
896 sov++;
897
898 for (h = cap_hdr; h; h = h->next) {
899 if ((h->namelen == col - sol) &&
900 (strncasecmp(sol, h->name, h->namelen) == 0)) {
901 if (cap[h->index] == NULL)
902 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]903 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]904
905 if (cap[h->index] == NULL) {
906 Alert("HTTP capture : out of memory.\n");
907 continue;
908 }
909
910 len = eol - sov;
911 if (len > h->len)
912 len = h->len;
913
914 memcpy(cap[h->index], sov, len);
915 cap[h->index][len]=0;
916 }
917 }
918 sol = eol + idx->v[cur_idx].cr + 1;
919 cur_idx = idx->v[cur_idx].next;
920 }
921}
922
923
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]924/* either we find an LF at <ptr> or we jump to <bad>.
925 */
926#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
927
928/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
929 * otherwise to <http_msg_ood> with <state> set to <st>.
930 */
931#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
932 ptr++; \
933 if (likely(ptr < end)) \
934 goto good; \
935 else { \
936 state = (st); \
937 goto http_msg_ood; \
938 } \
939 } while (0)
940
941
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]942/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]943 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]944 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
945 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
946 * will give undefined results.
947 * Note that it is upon the caller's responsibility to ensure that ptr < end,
948 * and that msg->sol points to the beginning of the response.
949 * If a complete line is found (which implies that at least one CR or LF is
950 * found before <end>, the updated <ptr> is returned, otherwise NULL is
951 * returned indicating an incomplete line (which does not mean that parts have
952 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
953 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
954 * upon next call.
955 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]956 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]957 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
958 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]959 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]960 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]961const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]962 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]963 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]964{
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]965 const char *msg_start = msg->buf->buf.p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]966
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]967 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]968 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]969 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]970 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
972
973 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]974 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
976 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]977 state = HTTP_MSG_ERROR;
978 break;
979
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]980 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]981 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]982 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]983 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]984 goto http_msg_rpcode;
985 }
986 if (likely(HTTP_IS_SPHT(*ptr)))
987 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
988 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]989 state = HTTP_MSG_ERROR;
990 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]991
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]992 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]993 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]994 if (likely(!HTTP_IS_LWS(*ptr)))
995 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
996
997 if (likely(HTTP_IS_SPHT(*ptr))) {
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 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1000 }
1001
1002 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1003 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1004 http_msg_rsp_reason:
1005 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1006 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1007 msg->sl.st.r_l = 0;
1008 goto http_msg_rpline_eol;
1009
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1010 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1011 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1012 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1013 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1014 goto http_msg_rpreason;
1015 }
1016 if (likely(HTTP_IS_SPHT(*ptr)))
1017 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1018 /* so it's a CR/LF, so there is no reason phrase */
1019 goto http_msg_rsp_reason;
1020
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1021 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1022 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1023 if (likely(!HTTP_IS_CRLF(*ptr)))
1024 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1025 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1026 http_msg_rpline_eol:
1027 /* We have seen the end of line. Note that we do not
1028 * necessarily have the \n yet, but at least we know that we
1029 * have EITHER \r OR \n, otherwise the response would not be
1030 * complete. We can then record the response length and return
1031 * to the caller which will be able to register it.
1032 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1033 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1034 return ptr;
1035
1036#ifdef DEBUG_FULL
1037 default:
1038 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1039 exit(1);
1040#endif
1041 }
1042
1043 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1044 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045 if (ret_state)
1046 *ret_state = state;
1047 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1048 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1049 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1050}
1051
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1052/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1053 * This function parses a request line between <ptr> and <end>, starting with
1054 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1055 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1056 * will give undefined results.
1057 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1058 * and that msg->sol points to the beginning of the request.
1059 * If a complete line is found (which implies that at least one CR or LF is
1060 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1061 * returned indicating an incomplete line (which does not mean that parts have
1062 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1063 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1064 * upon next call.
1065 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1066 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1067 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1068 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1069 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1070 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1071const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1072 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1073 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1074{
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1075 const char *msg_start = msg->buf->buf.p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1077 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1079 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 if (likely(HTTP_IS_TOKEN(*ptr)))
1081 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
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_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1084 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1085 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1086 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1087
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 if (likely(HTTP_IS_CRLF(*ptr))) {
1089 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1090 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1091 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1094 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1095 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1096 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1097 msg->sl.rq.v_l = 0;
1098 goto http_msg_rqline_eol;
1099 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1100 state = HTTP_MSG_ERROR;
1101 break;
1102
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1103 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1104 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1105 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1106 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1107 goto http_msg_rquri;
1108 }
1109 if (likely(HTTP_IS_SPHT(*ptr)))
1110 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1111 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1112 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1115 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1116 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1118
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1119 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1120 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1121 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1122 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1123
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1124 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1125 /* non-ASCII chars are forbidden unless option
1126 * accept-invalid-http-request is enabled in the frontend.
1127 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1128 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1129 if (msg->err_pos < -1)
1130 goto invalid_char;
1131 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1132 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1133 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1134 }
1135
1136 if (likely(HTTP_IS_CRLF(*ptr))) {
1137 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1138 goto http_msg_req09_uri_e;
1139 }
1140
1141 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1142 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1143 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1144 state = HTTP_MSG_ERROR;
1145 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1146
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1147 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1148 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1149 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1150 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1151 goto http_msg_rqver;
1152 }
1153 if (likely(HTTP_IS_SPHT(*ptr)))
1154 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1155 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1156 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1157
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1158 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1159 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1160 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1161 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1162
1163 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1164 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1165 http_msg_rqline_eol:
1166 /* We have seen the end of line. Note that we do not
1167 * necessarily have the \n yet, but at least we know that we
1168 * have EITHER \r OR \n, otherwise the request would not be
1169 * complete. We can then record the request length and return
1170 * to the caller which will be able to register it.
1171 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1172 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1173 return ptr;
1174 }
1175
1176 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1177 state = HTTP_MSG_ERROR;
1178 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1179
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1180#ifdef DEBUG_FULL
1181 default:
1182 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1183 exit(1);
1184#endif
1185 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1186
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1187 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1188 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189 if (ret_state)
1190 *ret_state = state;
1191 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1192 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1193 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1194}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1195
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1196/*
1197 * Returns the data from Authorization header. Function may be called more
1198 * than once so data is stored in txn->auth_data. When no header is found
1199 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1200 * searching again for something we are unable to find anyway.
1201 */
1202
1203char get_http_auth_buff[BUFSIZE];
1204
1205int
1206get_http_auth(struct session *s)
1207{
1208
1209 struct http_txn *txn = &s->txn;
1210 struct chunk auth_method;
1211 struct hdr_ctx ctx;
1212 char *h, *p;
1213 int len;
1214
1215#ifdef DEBUG_AUTH
1216 printf("Auth for session %p: %d\n", s, txn->auth.method);
1217#endif
1218
1219 if (txn->auth.method == HTTP_AUTH_WRONG)
1220 return 0;
1221
1222 if (txn->auth.method)
1223 return 1;
1224
1225 txn->auth.method = HTTP_AUTH_WRONG;
1226
1227 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1228
1229 if (txn->flags & TX_USE_PX_CONN) {
1230 h = "Proxy-Authorization";
1231 len = strlen(h);
1232 } else {
1233 h = "Authorization";
1234 len = strlen(h);
1235 }
1236
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1237 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]1238 return 0;
1239
1240 h = ctx.line + ctx.val;
1241
1242 p = memchr(h, ' ', ctx.vlen);
1243 if (!p || p == h)
1244 return 0;
1245
1246 chunk_initlen(&auth_method, h, 0, p-h);
1247 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1248
1249 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1250
1251 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
1252 get_http_auth_buff, BUFSIZE - 1);
1253
1254 if (len < 0)
1255 return 0;
1256
1257
1258 get_http_auth_buff[len] = '\0';
1259
1260 p = strchr(get_http_auth_buff, ':');
1261
1262 if (!p)
1263 return 0;
1264
1265 txn->auth.user = get_http_auth_buff;
1266 *p = '\0';
1267 txn->auth.pass = p+1;
1268
1269 txn->auth.method = HTTP_AUTH_BASIC;
1270 return 1;
1271 }
1272
1273 return 0;
1274}
1275
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1276
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1277/*
1278 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1279 * depending on the initial msg->msg_state. The caller is responsible for
1280 * ensuring that the message does not wrap. The function can be preempted
1281 * everywhere when data are missing and recalled at the exact same location
1282 * with no information loss. The message may even be realigned between two
1283 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1284 * 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]1285 * fields. Note that msg->sol will be initialized after completing the first
1286 * state, so that none of the msg pointers has to be initialized prior to the
1287 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1288 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1289void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1290{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1291 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1292 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1293 struct channel *buf = msg->buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1294
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1295 state = msg->msg_state;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1296 ptr = buf->buf.p + msg->next;
1297 end = buf->buf.p + buf->buf.i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1298
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1299 if (unlikely(ptr >= end))
1300 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1301
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1302 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1303 /*
1304 * First, states that are specific to the response only.
1305 * We check them first so that request and headers are
1306 * closer to each other (accessed more often).
1307 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1308 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1309 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1310 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1311 /* we have a start of message, but we have to check
1312 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1313 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1314 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1315 if (unlikely(ptr != buf->buf.p)) {
1316 if (buf->buf.o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1317 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1318 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1319 bi_fast_delete(&buf->buf, ptr - buf->buf.p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1320 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1321 msg->sol = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1322 hdr_idx_init(idx);
1323 state = HTTP_MSG_RPVER;
1324 goto http_msg_rpver;
1325 }
1326
1327 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1328 goto http_msg_invalid;
1329
1330 if (unlikely(*ptr == '\n'))
1331 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1332 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1333 /* stop here */
1334
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1336 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1337 EXPECT_LF_HERE(ptr, http_msg_invalid);
1338 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1339 /* stop here */
1340
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1341 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1342 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1343 case HTTP_MSG_RPVER_SP:
1344 case HTTP_MSG_RPCODE:
1345 case HTTP_MSG_RPCODE_SP:
1346 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1347 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1348 state, ptr, end,
1349 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1350 if (unlikely(!ptr))
1351 return;
1352
1353 /* we have a full response and we know that we have either a CR
1354 * or an LF at <ptr>.
1355 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1357
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1358 msg->sol = ptr - buf->buf.p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1359 if (likely(*ptr == '\r'))
1360 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1361 goto http_msg_rpline_end;
1362
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1363 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1364 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1365 /* msg->sol must point to the first of CR or LF. */
1366 EXPECT_LF_HERE(ptr, http_msg_invalid);
1367 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1368 /* stop here */
1369
1370 /*
1371 * Second, states that are specific to the request only
1372 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1373 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1374 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1375 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1376 /* we have a start of message, but we have to check
1377 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1378 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1379 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1380 if (likely(ptr != buf->buf.p)) {
1381 if (buf->buf.o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1382 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1383 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1384 bi_fast_delete(&buf->buf, ptr - buf->buf.p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1385 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1386 msg->sol = 0;
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1387 /* we will need this when keep-alive will be supported
1388 hdr_idx_init(idx);
1389 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1390 state = HTTP_MSG_RQMETH;
1391 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1393
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1394 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1395 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 if (unlikely(*ptr == '\n'))
1398 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1399 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1401
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1402 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1403 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 EXPECT_LF_HERE(ptr, http_msg_invalid);
1405 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1406 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1407
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1408 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1409 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1410 case HTTP_MSG_RQMETH_SP:
1411 case HTTP_MSG_RQURI:
1412 case HTTP_MSG_RQURI_SP:
1413 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1414 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1415 state, ptr, end,
1416 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1417 if (unlikely(!ptr))
1418 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1419
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1420 /* we have a full request and we know that we have either a CR
1421 * or an LF at <ptr>.
1422 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1425 msg->sol = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1426 if (likely(*ptr == '\r'))
1427 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1428 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1431 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1432 /* check for HTTP/0.9 request : no version information available.
1433 * msg->sol must point to the first of CR or LF.
1434 */
1435 if (unlikely(msg->sl.rq.v_l == 0))
1436 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1437
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1438 EXPECT_LF_HERE(ptr, http_msg_invalid);
1439 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1441
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1442 /*
1443 * Common states below
1444 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1445 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1446 http_msg_hdr_first:
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1447 msg->sol = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1448 if (likely(!HTTP_IS_CRLF(*ptr))) {
1449 goto http_msg_hdr_name;
1450 }
1451
1452 if (likely(*ptr == '\r'))
1453 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1454 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1457 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 /* assumes msg->sol points to the first char */
1459 if (likely(HTTP_IS_TOKEN(*ptr)))
1460 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1461
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1462 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463 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]1464
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1465 if (likely(msg->err_pos < -1) || *ptr == '\n')
1466 goto http_msg_invalid;
1467
1468 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1469 msg->err_pos = ptr - buf->buf.p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1470
1471 /* and we still accept this non-token character */
1472 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1473
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1474 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1475 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1476 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 if (likely(HTTP_IS_SPHT(*ptr)))
1478 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]1479
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480 /* header value can be basically anything except CR/LF */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1481 msg->sov = ptr - buf->buf.p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1482
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 if (likely(!HTTP_IS_CRLF(*ptr))) {
1484 goto http_msg_hdr_val;
1485 }
1486
1487 if (likely(*ptr == '\r'))
1488 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1489 goto http_msg_hdr_l1_lf;
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_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1492 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 EXPECT_LF_HERE(ptr, http_msg_invalid);
1494 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]1495
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1497 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 if (likely(HTTP_IS_SPHT(*ptr))) {
1499 /* replace HT,CR,LF with spaces */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1500 for (; buf->buf.p + msg->sov < ptr; msg->sov++)
1501 buf->buf.p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 goto http_msg_hdr_l1_sp;
1503 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1504 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1505 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 goto http_msg_complete_header;
1507
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1509 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1510 /* assumes msg->sol points to the first char, and msg->sov
1511 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 */
1513 if (likely(!HTTP_IS_CRLF(*ptr)))
1514 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1515
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1516 msg->eol = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1517 /* Note: we could also copy eol into ->eoh so that we have the
1518 * real header end in case it ends with lots of LWS, but is this
1519 * really needed ?
1520 */
1521 if (likely(*ptr == '\r'))
1522 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1523 goto http_msg_hdr_l2_lf;
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_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1526 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 EXPECT_LF_HERE(ptr, http_msg_invalid);
1528 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]1529
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1531 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1533 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1534 for (; buf->buf.p + msg->eol < ptr; msg->eol++)
1535 buf->buf.p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 goto http_msg_hdr_val;
1537 }
1538 http_msg_complete_header:
1539 /*
1540 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1541 * Assumes msg->sol points to the first char, msg->sov points
1542 * to the first character of the value and msg->eol to the
1543 * first CR or LF so we know how the line ends. We insert last
1544 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1545 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1546 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->buf.p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 idx, idx->tail) < 0))
1548 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1549
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1550 msg->sol = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1551 if (likely(!HTTP_IS_CRLF(*ptr))) {
1552 goto http_msg_hdr_name;
1553 }
1554
1555 if (likely(*ptr == '\r'))
1556 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1557 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1560 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1561 /* Assumes msg->sol points to the first of either CR or LF */
1562 EXPECT_LF_HERE(ptr, http_msg_invalid);
1563 ptr++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1564 msg->sov = msg->next = ptr - buf->buf.p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1565 msg->eoh = msg->sol;
1566 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1567 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1568 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1569
1570 case HTTP_MSG_ERROR:
1571 /* this may only happen if we call http_msg_analyser() twice with an error */
1572 break;
1573
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574#ifdef DEBUG_FULL
1575 default:
1576 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1577 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1578#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 }
1580 http_msg_ood:
1581 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1582 msg->msg_state = state;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1583 msg->next = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1584 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1585
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 http_msg_invalid:
1587 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1588 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1589 msg->next = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1590 return;
1591}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1592
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1593/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1594 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1595 * nothing is done and 1 is returned.
1596 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1597static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1598{
1599 int delta;
1600 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1601 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1602
1603 if (msg->sl.rq.v_l != 0)
1604 return 1;
1605
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1606 cur_end = msg->buf->buf.p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1607 delta = 0;
1608
1609 if (msg->sl.rq.u_l == 0) {
1610 /* if no URI was set, add "/" */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]1611 delta = buffer_replace2(&msg->buf->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1612 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1613 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1614 }
1615 /* add HTTP version */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]1616 delta = buffer_replace2(&msg->buf->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1617 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1618 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1619 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1620 HTTP_MSG_RQMETH,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1621 msg->buf->buf.p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1622 NULL, NULL);
1623 if (unlikely(!cur_end))
1624 return 0;
1625
1626 /* we have a full HTTP/1.0 request now and we know that
1627 * we have either a CR or an LF at <ptr>.
1628 */
1629 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1630 return 1;
1631}
1632
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1633/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1634 * and "keep-alive" values. If we already know that some headers may safely
1635 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1636 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1637 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
1638 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1639 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1640 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1641 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1642 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1643void 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]1644{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1645 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1646 const char *hdr_val = "Connection";
1647 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1648
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1649 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1650 return;
1651
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1652 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1653 hdr_val = "Proxy-Connection";
1654 hdr_len = 16;
1655 }
1656
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1657 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1658 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1659 while (http_find_header2(hdr_val, hdr_len, msg->buf->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1660 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1661 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1662 if (to_del & 2)
1663 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1664 else
1665 txn->flags |= TX_CON_KAL_SET;
1666 }
1667 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1668 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1669 if (to_del & 1)
1670 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1671 else
1672 txn->flags |= TX_CON_CLO_SET;
1673 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1674 }
1675
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1676 txn->flags |= TX_HDR_CONN_PRS;
1677 return;
1678}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1679
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1680/* Apply desired changes on the Connection: header. Values may be removed and/or
1681 * added depending on the <wanted> flags, which are exclusively composed of
1682 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1683 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1684 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1685void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1686{
1687 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1688 const char *hdr_val = "Connection";
1689 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1690
1691 ctx.idx = 0;
1692
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1693
1694 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1695 hdr_val = "Proxy-Connection";
1696 hdr_len = 16;
1697 }
1698
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1699 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1700 while (http_find_header2(hdr_val, hdr_len, msg->buf->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1701 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1702 if (wanted & TX_CON_KAL_SET)
1703 txn->flags |= TX_CON_KAL_SET;
1704 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1705 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1706 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1707 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1708 if (wanted & TX_CON_CLO_SET)
1709 txn->flags |= TX_CON_CLO_SET;
1710 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1711 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1712 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1713 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1714
1715 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1716 return;
1717
1718 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1719 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1720 hdr_val = "Connection: close";
1721 hdr_len = 17;
1722 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1723 hdr_val = "Proxy-Connection: close";
1724 hdr_len = 23;
1725 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1726 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1727 }
1728
1729 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1730 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1731 hdr_val = "Connection: keep-alive";
1732 hdr_len = 22;
1733 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1734 hdr_val = "Proxy-Connection: keep-alive";
1735 hdr_len = 28;
1736 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1737 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 }
1739 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1740}
1741
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1742/* 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]1743 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1744 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1745 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1746 * 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]1747 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1748int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1749{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1750 const struct channel *buf = msg->buf;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1751 const char *ptr = b_ptr(&buf->buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1752 const char *ptr_old = ptr;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1753 const char *end = buf->buf.data + buf->buf.size;
1754 const char *stop = bi_end(&buf->buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1755 unsigned int chunk = 0;
1756
1757 /* The chunk size is in the following form, though we are only
1758 * interested in the size and CRLF :
1759 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1760 */
1761 while (1) {
1762 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1763 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1764 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1765 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1766 if (c < 0) /* not a hex digit anymore */
1767 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1768 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1769 ptr = buf->buf.data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1770 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1771 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1772 chunk = (chunk << 4) + c;
1773 }
1774
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1775 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1776 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1777 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1778
1779 while (http_is_spht[(unsigned char)*ptr]) {
1780 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1781 ptr = buf->buf.data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1782 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1784 }
1785
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1786 /* Up to there, we know that at least one byte is present at *ptr. Check
1787 * for the end of chunk size.
1788 */
1789 while (1) {
1790 if (likely(HTTP_IS_CRLF(*ptr))) {
1791 /* we now have a CR or an LF at ptr */
1792 if (likely(*ptr == '\r')) {
1793 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1794 ptr = buf->buf.data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1795 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1796 return 0;
1797 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1798
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1799 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1800 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1801 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1802 ptr = buf->buf.data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1803 /* done */
1804 break;
1805 }
1806 else if (*ptr == ';') {
1807 /* chunk extension, ends at next CRLF */
1808 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1809 ptr = buf->buf.data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1810 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1811 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1812
1813 while (!HTTP_IS_CRLF(*ptr)) {
1814 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1815 ptr = buf->buf.data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1816 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1817 return 0;
1818 }
1819 /* we have a CRLF now, loop above */
1820 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1821 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1822 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1823 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1824 }
1825
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1827 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1828 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1829 */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1830 msg->sov += ptr - ptr_old;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1831 msg->next = buffer_count(&buf->buf, buf->buf.p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1832 msg->chunk_len = chunk;
1833 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1834 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1835 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1836 error:
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1837 msg->err_pos = buffer_count(&buf->buf, buf->buf.p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1838 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1839}
1840
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1841/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1842 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1843 * the trailers is found, it is automatically scheduled to be forwarded,
1844 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1845 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1846 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1847 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1848 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1849 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1850 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1851 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1852 * matches the length of trailers already parsed and not forwarded. It is also
1853 * important to note that this function is designed to be able to parse wrapped
1854 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1855 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1856int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1857{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1858 const struct channel *buf = msg->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1859
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1860 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1861 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1862 const char *p1 = NULL, *p2 = NULL;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1863 const char *ptr = b_ptr(&buf->buf, msg->next);
1864 const char *stop = bi_end(&buf->buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1865 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1866
1867 /* scan current line and stop at LF or CRLF */
1868 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1869 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1870 return 0;
1871
1872 if (*ptr == '\n') {
1873 if (!p1)
1874 p1 = ptr;
1875 p2 = ptr;
1876 break;
1877 }
1878
1879 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1880 if (p1) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1881 msg->err_pos = buffer_count(&buf->buf, buf->buf.p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1882 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1883 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 p1 = ptr;
1885 }
1886
1887 ptr++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1888 if (ptr >= buf->buf.data + buf->buf.size)
1889 ptr = buf->buf.data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1890 }
1891
1892 /* after LF; point to beginning of next line */
1893 p2++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1894 if (p2 >= buf->buf.data + buf->buf.size)
1895 p2 = buf->buf.data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1896
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1897 bytes = p2 - b_ptr(&buf->buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1898 if (bytes < 0)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1899 bytes += buf->buf.size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1900
1901 /* schedule this line for forwarding */
1902 msg->sov += bytes;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1903 if (msg->sov >= buf->buf.size)
1904 msg->sov -= buf->buf.size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1905
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1906 if (p1 == b_ptr(&buf->buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1907 /* LF/CRLF at beginning of line => end of trailers at p2.
1908 * Everything was scheduled for forwarding, there's nothing
1909 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1910 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1911 msg->next = buffer_count(&buf->buf, buf->buf.p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1912 msg->msg_state = HTTP_MSG_DONE;
1913 return 1;
1914 }
1915 /* OK, next line then */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1916 msg->next = buffer_count(&buf->buf, buf->buf.p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1917 }
1918}
1919
1920/* This function may be called only in HTTP_MSG_DATA_CRLF. It reads the CRLF or
1921 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1922 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1923 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1924 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1925 * not enough data are available, the function does not change anything and
1926 * returns zero. If a parse error is encountered, the function returns < 0 and
1927 * does not change anything. Note: this function is designed to parse wrapped
1928 * CRLF at the end of the buffer.
1929 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1930int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1931{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1932 const struct channel *buf = msg->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1933 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1934 int bytes;
1935
1936 /* NB: we'll check data availabilty at the end. It's not a
1937 * problem because whatever we match first will be checked
1938 * against the correct length.
1939 */
1940 bytes = 1;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1941 ptr = buf->buf.p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1942 if (*ptr == '\r') {
1943 bytes++;
1944 ptr++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1945 if (ptr >= buf->buf.data + buf->buf.size)
1946 ptr = buf->buf.data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1947 }
1948
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1949 if (bytes > buf->buf.i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1950 return 0;
1951
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1952 if (*ptr != '\n') {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1953 msg->err_pos = buffer_count(&buf->buf, buf->buf.p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1954 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1955 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1956
1957 ptr++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1958 if (ptr >= buf->buf.data + buf->buf.size)
1959 ptr = buf->buf.data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1960 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1961 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1962 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1963 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1964 return 1;
1965}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1966
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1967/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1968 * processing can continue on next analysers, or zero if it either needs more
1969 * data or wants to immediately abort the request (eg: timeout, error, ...). It
1970 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
1971 * when it has nothing left to do, and may remove any analyser when it wants to
1972 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1973 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1974int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1975{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1976 /*
1977 * We will parse the partial (or complete) lines.
1978 * We will check the request syntax, and also join multi-line
1979 * headers. An index of all the lines will be elaborated while
1980 * parsing.
1981 *
1982 * For the parsing, we use a 28 states FSM.
1983 *
1984 * Here is the information we currently have :
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1985 * req->buf.p = beginning of request
1986 * req->buf.p + msg->eoh = end of processed headers / start of current one
1987 * req->buf.p + req->buf.i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1988 * msg->eol = end of current header or line (LF or CRLF)
1989 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1990 *
1991 * At end of parsing, we may perform a capture of the error (if any), and
1992 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
1993 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
1994 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1995 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1996
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1997 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]1998 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1999 struct http_txn *txn = &s->txn;
2000 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2001 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2002
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2003 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]2004 now_ms, __FUNCTION__,
2005 s,
2006 req,
2007 req->rex, req->wex,
2008 req->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2009 req->buf.i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2010 req->analysers);
2011
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2012 /* we're speaking HTTP here, so let's speak HTTP to the client */
2013 s->srv_error = http_return_srv_error;
2014
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2015 /* There's a protected area at the end of the buffer for rewriting
2016 * purposes. We don't want to start to parse the request if the
2017 * protected area is affected, because we may have to move processed
2018 * data later, which is much more complicated.
2019 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2020 if (buffer_not_empty(&req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2021 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2022 unlikely(channel_full(req) ||
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2023 bi_end(&req->buf) < b_ptr(&req->buf, msg->next) ||
2024 bi_end(&req->buf) > req->buf.data + req->buf.size - global.tune.maxrewrite)) {
2025 if (req->buf.o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2026 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2027 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2028 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2029 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2030 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2031 return 0;
2032 }
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2033 if (bi_end(&req->buf) < b_ptr(&req->buf, msg->next) ||
2034 bi_end(&req->buf) > req->buf.data + req->buf.size - global.tune.maxrewrite)
2035 buffer_slow_realign(&msg->buf->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2036 }
2037
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2038 /* Note that we have the same problem with the response ; we
2039 * may want to send a redirect, error or anything which requires
2040 * some spare space. So we'll ensure that we have at least
2041 * maxrewrite bytes available in the response buffer before
2042 * processing that one. This will only affect pipelined
2043 * keep-alive requests.
2044 */
2045 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2046 unlikely(channel_full(s->rep) ||
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2047 bi_end(&s->rep->buf) < b_ptr(&s->rep->buf, txn->rsp.next) ||
2048 bi_end(&s->rep->buf) > s->rep->buf.data + s->rep->buf.size - global.tune.maxrewrite)) {
2049 if (s->rep->buf.o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2050 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]2051 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2052 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2053 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2054 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2055 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2056 return 0;
2057 }
2058 }
2059
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2060 if (likely(msg->next < req->buf.i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2061 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2062 }
2063
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2064 /* 1: we might have to print this header in debug mode */
2065 if (unlikely((global.mode & MODE_DEBUG) &&
2066 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2067 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2068 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2069
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2070 sol = req->buf.p;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2071 eol = sol + msg->sl.rq.l;
2072 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2073
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2074 sol += hdr_idx_first_pos(&txn->hdr_idx);
2075 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2076
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2077 while (cur_idx) {
2078 eol = sol + txn->hdr_idx.v[cur_idx].len;
2079 debug_hdr("clihdr", s, sol, eol);
2080 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2081 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2082 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2083 }
2084
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2085
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2086 /*
2087 * Now we quickly check if we have found a full valid request.
2088 * If not so, we check the FD and buffer states before leaving.
2089 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2090 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2091 * requests are checked first. When waiting for a second request
2092 * on a keep-alive session, if we encounter and error, close, t/o,
2093 * we note the error in the session flags but don't set any state.
2094 * Since the error will be noted there, it will not be counted by
2095 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2096 * Last, we may increase some tracked counters' http request errors on
2097 * the cases that are deliberately the client's fault. For instance,
2098 * a timeout or connection reset is not counted as an error. However
2099 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2100 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2101
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2102 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2103 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2104 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2105 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2106 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2107 session_inc_http_req_ctr(s);
2108 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2109 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2110 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2111 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2112
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2113 /* 1: Since we are in header mode, if there's no space
2114 * left for headers, we won't be able to free more
2115 * later, so the session will never terminate. We
2116 * must terminate it now.
2117 */
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2118 if (unlikely(buffer_full(&req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2119 /* FIXME: check if URI is set and return Status
2120 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2121 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2122 session_inc_http_req_ctr(s);
2123 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2124 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2125 if (msg->err_pos < 0)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2126 msg->err_pos = req->buf.i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2127 goto return_bad_req;
2128 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2129
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2130 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2131 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2132 if (!(s->flags & SN_ERR_MASK))
2133 s->flags |= SN_ERR_CLICL;
2134
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2135 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2136 goto failed_keep_alive;
2137
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2138 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2139 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2140 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]2141 session_inc_http_err_ctr(s);
2142 }
2143
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2144 msg->msg_state = HTTP_MSG_ERROR;
2145 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2146
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2147 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2148 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2149 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2150 if (s->listener->counters)
2151 s->listener->counters->failed_req++;
2152
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2153 if (!(s->flags & SN_FINST_MASK))
2154 s->flags |= SN_FINST_R;
2155 return 0;
2156 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2157
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2158 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2159 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]2160 if (!(s->flags & SN_ERR_MASK))
2161 s->flags |= SN_ERR_CLITO;
2162
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2163 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2164 goto failed_keep_alive;
2165
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2166 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2167 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2168 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]2169 session_inc_http_err_ctr(s);
2170 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2171 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2172 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2173 msg->msg_state = HTTP_MSG_ERROR;
2174 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2175
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2176 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2177 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2178 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2179 if (s->listener->counters)
2180 s->listener->counters->failed_req++;
2181
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2182 if (!(s->flags & SN_FINST_MASK))
2183 s->flags |= SN_FINST_R;
2184 return 0;
2185 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2186
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2187 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2188 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2189 if (!(s->flags & SN_ERR_MASK))
2190 s->flags |= SN_ERR_CLICL;
2191
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2192 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2193 goto failed_keep_alive;
2194
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2195 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2196 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]2197 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2198 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2199 msg->msg_state = HTTP_MSG_ERROR;
2200 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2201
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2202 session_inc_http_err_ctr(s);
2203 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2204 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2205 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2206 if (s->listener->counters)
2207 s->listener->counters->failed_req++;
2208
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2209 if (!(s->flags & SN_FINST_MASK))
2210 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2211 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2212 }
2213
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2214 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2215 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2216 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2217#ifdef TCP_QUICKACK
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2218 if (s->listener->options & LI_O_NOQUICKACK && req->buf.i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2219 /* We need more data, we have to re-enable quick-ack in case we
2220 * previously disabled it, otherwise we might cause the client
2221 * to delay next data.
2222 */
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]2223 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2224 }
2225#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2226
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2227 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2228 /* If the client starts to talk, let's fall back to
2229 * request timeout processing.
2230 */
2231 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2232 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2233 }
2234
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2235 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2236 if (!tick_isset(req->analyse_exp)) {
2237 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2238 (txn->flags & TX_WAIT_NEXT_RQ) &&
2239 tick_isset(s->be->timeout.httpka))
2240 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2241 else
2242 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2243 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2244
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2245 /* we're not ready yet */
2246 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2247
2248 failed_keep_alive:
2249 /* Here we process low-level errors for keep-alive requests. In
2250 * short, if the request is not the first one and it experiences
2251 * a timeout, read error or shutdown, we just silently close so
2252 * that the client can try again.
2253 */
2254 txn->status = 0;
2255 msg->msg_state = HTTP_MSG_RQBEFORE;
2256 req->analysers = 0;
2257 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2258 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2259 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2260 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2261 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2262
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2263 /* OK now we have a complete HTTP request with indexed headers. Let's
2264 * complete the request parsing by setting a few fields we will need
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2265 * 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]2266 * 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]2267 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2268 * byte after the last LF. msg->sov points to the first byte of data.
2269 * msg->eol cannot be trusted because it may have been left uninitialized
2270 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2271 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2272
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2273 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2274 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2275
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2276 if (txn->flags & TX_WAIT_NEXT_RQ) {
2277 /* kill the pending keep-alive timeout */
2278 txn->flags &= ~TX_WAIT_NEXT_RQ;
2279 req->analyse_exp = TICK_ETERNITY;
2280 }
2281
2282
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2283 /* Maybe we found in invalid header name while we were configured not
2284 * to block on that, so we have to capture it now.
2285 */
2286 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2287 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]2288
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2289 /*
2290 * 1: identify the method
2291 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2292 txn->meth = find_http_meth(req->buf.p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2293
2294 /* we can make use of server redirect on GET and HEAD */
2295 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2296 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2297
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2298 /*
2299 * 2: check if the URI matches the monitor_uri.
2300 * We have to do this for every request which gets in, because
2301 * the monitor-uri is defined by the frontend.
2302 */
2303 if (unlikely((s->fe->monitor_uri_len != 0) &&
2304 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2305 !memcmp(req->buf.p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2306 s->fe->monitor_uri,
2307 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2308 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2309 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2310 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2311 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2312
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2313 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2314 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2315
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2316 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2317 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2318 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]2319
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 ret = acl_pass(ret);
2321 if (cond->pol == ACL_COND_UNLESS)
2322 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2323
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2324 if (ret) {
2325 /* we fail this request, let's return 503 service unavail */
2326 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2327 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2328 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2329 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2330 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2331
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2332 /* nothing to fail, let's reply normaly */
2333 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2334 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2335 goto return_prx_cond;
2336 }
2337
2338 /*
2339 * 3: Maybe we have to copy the original REQURI for the logs ?
2340 * Note: we cannot log anymore if the request has been
2341 * classified as invalid.
2342 */
2343 if (unlikely(s->logs.logwait & LW_REQ)) {
2344 /* we have a complete HTTP request that we must log */
2345 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2346 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 if (urilen >= REQURI_LEN)
2349 urilen = REQURI_LEN - 1;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2350 memcpy(txn->uri, req->buf.p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2351 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2352
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 if (!(s->logs.logwait &= ~LW_REQ))
2354 s->do_log(s);
2355 } else {
2356 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2357 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2358 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2359
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2360 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2361 s->unique_id = pool_alloc2(pool2_uniqueid);
2362 }
2363
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2364 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2365 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2366 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2367
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2368 /* ... and check if the request is HTTP/1.1 or above */
2369 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2370 ((req->buf.p[msg->sl.rq.v + 5] > '1') ||
2371 ((req->buf.p[msg->sl.rq.v + 5] == '1') &&
2372 (req->buf.p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2373 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2374
2375 /* "connection" has not been parsed yet */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2376 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2377
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2378 /* if the frontend has "option http-use-proxy-header", we'll check if
2379 * we have what looks like a proxied connection instead of a connection,
2380 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2381 * Note that this is *not* RFC-compliant, however browsers and proxies
2382 * happen to do that despite being non-standard :-(
2383 * We consider that a request not beginning with either '/' or '*' is
2384 * a proxied connection, which covers both "scheme://location" and
2385 * CONNECT ip:port.
2386 */
2387 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2388 req->buf.p[msg->sl.rq.u] != '/' && req->buf.p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2389 txn->flags |= TX_USE_PX_CONN;
2390
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2391 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2392 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2393
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2394 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2395 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2396 capture_headers(req->buf.p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2397 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2398
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2399 /* 6: determine the transfer-length.
2400 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2401 * the presence of a message-body in a REQUEST and its transfer length
2402 * must be determined that way (in order of precedence) :
2403 * 1. The presence of a message-body in a request is signaled by the
2404 * inclusion of a Content-Length or Transfer-Encoding header field
2405 * in the request's header fields. When a request message contains
2406 * both a message-body of non-zero length and a method that does
2407 * not define any semantics for that request message-body, then an
2408 * origin server SHOULD either ignore the message-body or respond
2409 * with an appropriate error message (e.g., 413). A proxy or
2410 * gateway, when presented the same request, SHOULD either forward
2411 * the request inbound with the message- body or ignore the
2412 * message-body when determining a response.
2413 *
2414 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2415 * and the "chunked" transfer-coding (Section 6.2) is used, the
2416 * transfer-length is defined by the use of this transfer-coding.
2417 * If a Transfer-Encoding header field is present and the "chunked"
2418 * transfer-coding is not present, the transfer-length is defined
2419 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2420 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2421 * 3. If a Content-Length header field is present, its decimal value in
2422 * OCTETs represents both the entity-length and the transfer-length.
2423 * If a message is received with both a Transfer-Encoding header
2424 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2425 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2426 * 4. By the server closing the connection. (Closing the connection
2427 * cannot be used to indicate the end of a request body, since that
2428 * would leave no possibility for the server to send back a response.)
2429 *
2430 * Whenever a transfer-coding is applied to a message-body, the set of
2431 * transfer-codings MUST include "chunked", unless the message indicates
2432 * it is terminated by closing the connection. When the "chunked"
2433 * transfer-coding is used, it MUST be the last transfer-coding applied
2434 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2435 */
2436
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2437 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2438 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2439 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2440 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2441 http_find_header2("Transfer-Encoding", 17, req->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2442 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2443 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2444 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2445 /* bad transfer-encoding (chunked followed by something else) */
2446 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2447 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2448 break;
2449 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2450 }
2451
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2452 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2453 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2454 http_find_header2("Content-Length", 14, req->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2455 signed long long cl;
2456
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2457 if (!ctx.vlen) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2458 msg->err_pos = ctx.line + ctx.val - req->buf.p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2459 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2460 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2461
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2462 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2463 msg->err_pos = ctx.line + ctx.val - req->buf.p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2464 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2465 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2466
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2467 if (cl < 0) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2468 msg->err_pos = ctx.line + ctx.val - req->buf.p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2469 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2470 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2471
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2472 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2473 msg->err_pos = ctx.line + ctx.val - req->buf.p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2474 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2475 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2476
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2477 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2478 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2479 }
2480
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2481 /* bodyless requests have a known length */
2482 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2483 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2484
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2485 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2486 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2487 req->analyse_exp = TICK_ETERNITY;
2488 return 1;
2489
2490 return_bad_req:
2491 /* We centralize bad requests processing here */
2492 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2493 /* we detected a parsing error. We want to archive this request
2494 * in the dedicated proxy area for later troubleshooting.
2495 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2496 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]2497 }
2498
2499 txn->req.msg_state = HTTP_MSG_ERROR;
2500 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2501 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2502
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2503 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2504 if (s->listener->counters)
2505 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2506
2507 return_prx_cond:
2508 if (!(s->flags & SN_ERR_MASK))
2509 s->flags |= SN_ERR_PRXCOND;
2510 if (!(s->flags & SN_FINST_MASK))
2511 s->flags |= SN_FINST_R;
2512
2513 req->analysers = 0;
2514 req->analyse_exp = TICK_ETERNITY;
2515 return 0;
2516}
2517
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2518/* We reached the stats page through a POST request.
2519 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2520 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2521 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2522int 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]2523{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2524 struct proxy *px = NULL;
2525 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2526
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2527 char key[LINESIZE];
2528 int action = ST_ADM_ACTION_NONE;
2529 int reprocess = 0;
2530
2531 int total_servers = 0;
2532 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2533
2534 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2535 char *st_cur_param = NULL;
2536 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2537
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2538 first_param = req->buf.p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2539 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2540
2541 cur_param = next_param = end_params;
2542
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2543 if (end_params >= req->buf.data + req->buf.size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2544 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2545 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2546 return 1;
2547 }
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2548 else if (end_params > req->buf.p + req->buf.i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2549 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2550 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2551 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2552 }
2553
2554 *end_params = '\0';
2555
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2556 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2557
2558 /*
2559 * Parse the parameters in reverse order to only store the last value.
2560 * From the html form, the backend and the action are at the end.
2561 */
2562 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2563 char *value;
2564 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2565
2566 cur_param--;
2567 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2568 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2569 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2570 poffset = (cur_param != first_param ? 1 : 0);
2571 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2572 if ((plen > 0) && (plen <= sizeof(key))) {
2573 strncpy(key, cur_param + poffset, plen);
2574 key[plen - 1] = '\0';
2575 } else {
2576 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2577 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2578 }
2579
2580 /* Parse the value */
2581 value = key;
2582 while (*value != '\0' && *value != '=') {
2583 value++;
2584 }
2585 if (*value == '=') {
2586 /* Ok, a value is found, we can mark the end of the key */
2587 *value++ = '\0';
2588 }
2589
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2590 if (!url_decode(key) || !url_decode(value))
2591 break;
2592
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2593 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2594 if (!px && (strcmp(key, "b") == 0)) {
2595 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2596 /* the backend name is unknown or ambiguous (duplicate names) */
2597 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2598 goto out;
2599 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2600 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2601 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2602 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2603 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2604 }
2605 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2606 action = ST_ADM_ACTION_ENABLE;
2607 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2608 else if (strcmp(value, "stop") == 0) {
2609 action = ST_ADM_ACTION_STOP;
2610 }
2611 else if (strcmp(value, "start") == 0) {
2612 action = ST_ADM_ACTION_START;
2613 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2614 else if (strcmp(value, "shutdown") == 0) {
2615 action = ST_ADM_ACTION_SHUTDOWN;
2616 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2617 else {
2618 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2619 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2620 }
2621 }
2622 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2623 if (!(px && action)) {
2624 /*
2625 * Indicates that we'll need to reprocess the parameters
2626 * as soon as backend and action are known
2627 */
2628 if (!reprocess) {
2629 st_cur_param = cur_param;
2630 st_next_param = next_param;
2631 }
2632 reprocess = 1;
2633 }
2634 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2635 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2636 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2637 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2638 /* Not already in maintenance, we can change the server state */
2639 sv->state |= SRV_MAINTAIN;
2640 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2641 altered_servers++;
2642 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2643 }
2644 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2645 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2646 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2647 /* Already in maintenance, we can change the server state */
2648 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2649 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2650 altered_servers++;
2651 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2652 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2653 break;
2654 case ST_ADM_ACTION_STOP:
2655 case ST_ADM_ACTION_START:
2656 if (action == ST_ADM_ACTION_START)
2657 sv->uweight = sv->iweight;
2658 else
2659 sv->uweight = 0;
2660
2661 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2662 /* we must take care of not pushing the server to full throttle during slow starts */
2663 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2664 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2665 else
2666 sv->eweight = BE_WEIGHT_SCALE;
2667 sv->eweight *= sv->uweight;
2668 } else {
2669 sv->eweight = sv->uweight;
2670 }
2671
2672 /* static LB algorithms are a bit harder to update */
2673 if (px->lbprm.update_server_eweight)
2674 px->lbprm.update_server_eweight(sv);
2675 else if (sv->eweight) {
2676 if (px->lbprm.set_server_status_up)
2677 px->lbprm.set_server_status_up(sv);
2678 }
2679 else {
2680 if (px->lbprm.set_server_status_down)
2681 px->lbprm.set_server_status_down(sv);
2682 }
2683 altered_servers++;
2684 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2685 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2686 case ST_ADM_ACTION_SHUTDOWN:
2687 if (px->state != PR_STSTOPPED) {
2688 struct session *sess, *sess_bck;
2689
2690 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2691 if (sess->srv_conn == sv)
2692 session_shutdown(sess, SN_ERR_KILLED);
2693
2694 altered_servers++;
2695 total_servers++;
2696 }
2697 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2698 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2699 } else {
2700 /* the server name is unknown or ambiguous (duplicate names) */
2701 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2702 }
2703 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2704 if (reprocess && px && action) {
2705 /* Now, we know the backend and the action chosen by the user.
2706 * We can safely restart from the first server parameter
2707 * to reprocess them
2708 */
2709 cur_param = st_cur_param;
2710 next_param = st_next_param;
2711 reprocess = 0;
2712 goto reprocess_servers;
2713 }
2714
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2715 next_param = cur_param;
2716 }
2717 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2718
2719 if (total_servers == 0) {
2720 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2721 }
2722 else if (altered_servers == 0) {
2723 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2724 }
2725 else if (altered_servers == total_servers) {
2726 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2727 }
2728 else {
2729 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2730 }
2731 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2732 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2733}
2734
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2735/* returns a pointer to the first rule which forbids access (deny or http_auth),
2736 * or NULL if everything's OK.
2737 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2738static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2739http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2740{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2741 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2742
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2743 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2744 int ret = 1;
2745
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2746 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2747 continue;
2748
2749 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2750 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2751 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]2752 ret = acl_pass(ret);
2753
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2754 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2755 ret = !ret;
2756 }
2757
2758 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2759 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2760 return NULL; /* no problem */
2761 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2762 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2763 }
2764 }
2765 return NULL;
2766}
2767
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2768/* This stream analyser runs all HTTP request processing which is common to
2769 * frontends and backends, which means blocking ACLs, filters, connection-close,
2770 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2771 * 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]2772 * either needs more data or wants to immediately abort the request (eg: deny,
2773 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2774 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2775int 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]2776{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2777 struct http_txn *txn = &s->txn;
2778 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2779 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2780 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2781 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2782 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2783 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2784
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2785 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2786 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2787 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2788 return 0;
2789 }
2790
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2791 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2792 req->analyse_exp = TICK_ETERNITY;
2793
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2794 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]2795 now_ms, __FUNCTION__,
2796 s,
2797 req,
2798 req->rex, req->wex,
2799 req->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2800 req->buf.i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2801 req->analysers);
2802
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2803 /* first check whether we have some ACLs set to block this request */
2804 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2805 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]2806
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2807 ret = acl_pass(ret);
2808 if (cond->pol == ACL_COND_UNLESS)
2809 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2810
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2811 if (ret) {
2812 txn->status = 403;
2813 /* let's log the request time */
2814 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2815 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2816 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2817 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2818 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2819 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2820
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2821 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2822 http_req_last_rule = http_check_access_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]2823
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2824 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2825 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2826 do_stats = stats_check_uri(s->rep->prod, txn, px);
2827 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2828 http_req_last_rule = http_check_access_rule(px, &px->uri_auth->http_req_rules, s, txn);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2829 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2830 else
2831 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2832
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2833 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2834 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_DENY) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2835 txn->status = 403;
2836 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2837 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2838 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]2839 s->fe->fe_counters.denied_req++;
2840 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
2841 s->be->be_counters.denied_req++;
2842 if (s->listener->counters)
2843 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2844 goto return_prx_cond;
2845 }
2846
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2847 /* try headers filters */
2848 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]2849 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2850 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2851
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2852 /* has the request been denied ? */
2853 if (txn->flags & TX_CLDENY) {
2854 /* no need to go further */
2855 txn->status = 403;
2856 /* let's log the request time */
2857 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2858 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2859 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2860 goto return_prx_cond;
2861 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2862
2863 /* When a connection is tarpitted, we use the tarpit timeout,
2864 * which may be the same as the connect timeout if unspecified.
2865 * If unset, then set it to zero because we really want it to
2866 * eventually expire. We build the tarpit as an analyser.
2867 */
2868 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2869 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2870 /* wipe the request out so that we can drop the connection early
2871 * if the client closes first.
2872 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2873 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2874 req->analysers = 0; /* remove switching rules etc... */
2875 req->analysers |= AN_REQ_HTTP_TARPIT;
2876 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2877 if (!req->analyse_exp)
2878 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2879 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2880 return 1;
2881 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2882 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2883
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2884 /* Until set to anything else, the connection mode is set as TUNNEL. It will
2885 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2886 * Option httpclose by itself does not set a mode, it remains a tunnel mode
2887 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2888 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
2889 * avoid to redo the same work if FE and BE have the same settings (common).
2890 * The method consists in checking if options changed between the two calls
2891 * (implying that either one is non-null, or one of them is non-null and we
2892 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2893 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2894
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]2895 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
2896 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
2897 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
2898 (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]2899 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2900
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]2901 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
2902 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2903 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2904 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
2905 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2906 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2907 tmp = TX_CON_WANT_CLO;
2908
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2909 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2910 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2911
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2912 if (!(txn->flags & TX_HDR_CONN_PRS)) {
2913 /* parse the Connection header and possibly clean it */
2914 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2915 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]2916 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2917 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2918 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2919 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2920 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2921 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2922 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2923
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2924 /* check if client or config asks for explicit close in KAL/SCL */
2925 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2926 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2927 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2928 (!(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]2929 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2930 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]2931 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2932 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2933 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2934
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2935 /* we can be blocked here because the request needs to be authenticated,
2936 * either to pass or to access stats.
2937 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2938 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_HTTP_AUTH) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2939 struct chunk msg;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2940 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2941
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2942 if (!realm)
2943 realm = do_stats?STATS_DEFAULT_REALM:px->id;
2944
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]2945 sprintf(trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]2946 chunk_initlen(&msg, trash, trashlen, strlen(trash));
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2947 txn->status = 401;
2948 stream_int_retnclose(req->prod, &msg);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2949 /* on 401 we still count one error, because normal browsing
2950 * won't significantly increase the counter but brute force
2951 * attempts will.
2952 */
2953 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2954 goto return_prx_cond;
2955 }
2956
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2957 /* add request headers from the rule sets in the same order */
2958 list_for_each_entry(wl, &px->req_add, list) {
2959 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2960 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]2961 ret = acl_pass(ret);
2962 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
2963 ret = !ret;
2964 if (!ret)
2965 continue;
2966 }
2967
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2968 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2969 goto return_bad_req;
2970 }
2971
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2972 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2973 struct stats_admin_rule *stats_admin_rule;
2974
2975 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2976 * FIXME!!! that one is rather dangerous, we want to
2977 * make it follow standard rules (eg: clear req->analysers).
2978 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2979
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2980 /* now check whether we have some admin rules for this request */
2981 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2982 int ret = 1;
2983
2984 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2985 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2986 ret = acl_pass(ret);
2987 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2988 ret = !ret;
2989 }
2990
2991 if (ret) {
2992 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2993 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2994 break;
2995 }
2996 }
2997
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2998 /* Was the status page requested with a POST ? */
2999 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3000 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3001 if (msg->msg_state < HTTP_MSG_100_SENT) {
3002 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3003 * send an HTTP/1.1 100 Continue intermediate response.
3004 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3005 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3006 struct hdr_ctx ctx;
3007 ctx.idx = 0;
3008 /* Expect is allowed in 1.1, look for it */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3009 if (http_find_header2("Expect", 6, req->buf.p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3010 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3011 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3012 }
3013 }
3014 msg->msg_state = HTTP_MSG_100_SENT;
3015 s->logs.tv_request = now; /* update the request timer to reflect full request */
3016 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3017 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3018 /* we need more data */
3019 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3020 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3021 return 0;
3022 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3023 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3024 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3025 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3026 }
3027
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3028 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3029 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3030 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3cefd522012-08-30 15:49:18 +0200[diff] [blame]3031 copy_target(&s->target, &s->rep->prod->conn.target); // for logging only
Willy Tarreau94981132012-05-21 17:09:48 +0200[diff] [blame]3032 s->rep->prod->conn.data_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3033 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3034 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3035 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3036 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3037
3038 return 0;
3039
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3040 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3041
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3042 /* check whether we have some ACLs set to redirect this request */
3043 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3044 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3045
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3046 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3047 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]3048 ret = acl_pass(ret);
3049 if (rule->cond->pol == ACL_COND_UNLESS)
3050 ret = !ret;
3051 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3052
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3053 if (ret) {
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]3054 struct chunk rdr = { .str = trash, .size = trashlen, .len = 0 };
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3055 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3056
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3057 /* build redirect message */
3058 switch(rule->code) {
3059 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3060 msg_fmt = HTTP_303;
3061 break;
3062 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3063 msg_fmt = HTTP_301;
3064 break;
3065 case 302:
3066 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3067 msg_fmt = HTTP_302;
3068 break;
3069 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3070
Willy Tarreau3bb9c232010-01-03 12:24:37 +0100[diff] [blame]3071 if (unlikely(!chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3072 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3073
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3074 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3075 case REDIRECT_TYPE_SCHEME: {
3076 const char *path;
3077 const char *host;
3078 struct hdr_ctx ctx;
3079 int pathlen;
3080 int hostlen;
3081
3082 host = "";
3083 hostlen = 0;
3084 ctx.idx = 0;
3085 if (http_find_header2("Host", 4, txn->req.buf->buf.p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3086 host = ctx.line + ctx.val;
3087 hostlen = ctx.vlen;
3088 }
3089
3090 path = http_get_path(txn);
3091 /* build message using path */
3092 if (path) {
3093 pathlen = txn->req.sl.rq.u_l + (req->buf.p + txn->req.sl.rq.u) - path;
3094 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3095 int qs = 0;
3096 while (qs < pathlen) {
3097 if (path[qs] == '?') {
3098 pathlen = qs;
3099 break;
3100 }
3101 qs++;
3102 }
3103 }
3104 } else {
3105 path = "/";
3106 pathlen = 1;
3107 }
3108
3109 /* check if we can add scheme + "://" + host + path */
3110 if (rdr.len + rule->rdr_len + 3 + hostlen + pathlen > rdr.size - 4)
3111 goto return_bad_req;
3112
3113 /* add scheme */
3114 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3115 rdr.len += rule->rdr_len;
3116
3117 /* add "://" */
3118 memcpy(rdr.str + rdr.len, "://", 3);
3119 rdr.len += 3;
3120
3121 /* add host */
3122 memcpy(rdr.str + rdr.len, host, hostlen);
3123 rdr.len += hostlen;
3124
3125 /* add path */
3126 memcpy(rdr.str + rdr.len, path, pathlen);
3127 rdr.len += pathlen;
3128
3129 /* append a slash at the end of the location is needed and missing */
3130 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3131 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3132 if (rdr.len > rdr.size - 5)
3133 goto return_bad_req;
3134 rdr.str[rdr.len] = '/';
3135 rdr.len++;
3136 }
3137
3138 break;
3139 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3140 case REDIRECT_TYPE_PREFIX: {
3141 const char *path;
3142 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3143
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3144 path = http_get_path(txn);
3145 /* build message using path */
3146 if (path) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3147 pathlen = txn->req.sl.rq.u_l + (req->buf.p + txn->req.sl.rq.u) - path;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3148 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3149 int qs = 0;
3150 while (qs < pathlen) {
3151 if (path[qs] == '?') {
3152 pathlen = qs;
3153 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3154 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3155 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3156 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3157 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3158 } else {
3159 path = "/";
3160 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3161 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3162
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3163 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3164 goto return_bad_req;
3165
3166 /* add prefix. Note that if prefix == "/", we don't want to
3167 * add anything, otherwise it makes it hard for the user to
3168 * configure a self-redirection.
3169 */
3170 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3171 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3172 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3173 }
3174
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3175 /* add path */
3176 memcpy(rdr.str + rdr.len, path, pathlen);
3177 rdr.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3178
3179 /* append a slash at the end of the location is needed and missing */
3180 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3181 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3182 if (rdr.len > rdr.size - 5)
3183 goto return_bad_req;
3184 rdr.str[rdr.len] = '/';
3185 rdr.len++;
3186 }
3187
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3188 break;
3189 }
3190 case REDIRECT_TYPE_LOCATION:
3191 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3192 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3193 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3194
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3195 /* add location */
3196 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3197 rdr.len += rule->rdr_len;
3198 break;
3199 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3200
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3201 if (rule->cookie_len) {
3202 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
3203 rdr.len += 14;
3204 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
3205 rdr.len += rule->cookie_len;
3206 memcpy(rdr.str + rdr.len, "\r\n", 2);
3207 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3208 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3209
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3210 /* add end of headers and the keep-alive/close status.
3211 * We may choose to set keep-alive if the Location begins
3212 * with a slash, because the client will come back to the
3213 * same server.
3214 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3215 txn->status = rule->code;
3216 /* let's log the request time */
3217 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3218
3219 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3220 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3221 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3222 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3223 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3224 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3225 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3226 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3227 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: keep-alive", 30);
3228 rdr.len += 30;
3229 } else {
3230 memcpy(rdr.str + rdr.len, "\r\nConnection: keep-alive", 24);
3231 rdr.len += 24;
3232 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3233 }
3234 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
3235 rdr.len += 4;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3236 bo_inject(req->prod->ob, rdr.str, rdr.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3237 /* "eat" the request */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3238 bi_fast_delete(&req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3239 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3240 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3241 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3242 txn->req.msg_state = HTTP_MSG_CLOSED;
3243 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3244 break;
3245 } else {
3246 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3247 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3248 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3249 rdr.len += 29;
3250 } else {
3251 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
3252 rdr.len += 23;
3253 }
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]3254 stream_int_retnclose(req->prod, &rdr);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3255 goto return_prx_cond;
3256 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3257 }
3258 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3259
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3260 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3261 * If this happens, then the data will not come immediately, so we must
3262 * send all what we have without waiting. Note that due to the small gain
3263 * 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]3264 * 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]3265 * itself once used.
3266 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3267 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3268
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3269 /* that's OK for us now, let's move on to next analysers */
3270 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3271
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3272 return_bad_req:
3273 /* We centralize bad requests processing here */
3274 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3275 /* we detected a parsing error. We want to archive this request
3276 * in the dedicated proxy area for later troubleshooting.
3277 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3278 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]3279 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3280
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3281 txn->req.msg_state = HTTP_MSG_ERROR;
3282 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3283 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3284
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3285 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3286 if (s->listener->counters)
3287 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3288
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3289 return_prx_cond:
3290 if (!(s->flags & SN_ERR_MASK))
3291 s->flags |= SN_ERR_PRXCOND;
3292 if (!(s->flags & SN_FINST_MASK))
3293 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3294
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3295 req->analysers = 0;
3296 req->analyse_exp = TICK_ETERNITY;
3297 return 0;
3298}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3299
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3300/* This function performs all the processing enabled for the current request.
3301 * It returns 1 if the processing can continue on next analysers, or zero if it
3302 * needs more data, encounters an error, or wants to immediately abort the
3303 * request. It relies on buffers flags, and updates s->req->analysers.
3304 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3305int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3306{
3307 struct http_txn *txn = &s->txn;
3308 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3309
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3310 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3311 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3312 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3313 return 0;
3314 }
3315
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3316 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]3317 now_ms, __FUNCTION__,
3318 s,
3319 req,
3320 req->rex, req->wex,
3321 req->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3322 req->buf.i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3323 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3324
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3325 /*
3326 * Right now, we know that we have processed the entire headers
3327 * and that unwanted requests have been filtered out. We can do
3328 * whatever we want with the remaining request. Also, now we
3329 * may have separate values for ->fe, ->be.
3330 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3331
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3332 /*
3333 * If HTTP PROXY is set we simply get remote server address
3334 * parsing incoming request.
3335 */
3336 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3337 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]3338 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3339
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3340 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3341 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3342 * Note that doing so might move headers in the request, but
3343 * the fields will stay coherent and the URI will not move.
3344 * This should only be performed in the backend.
3345 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3346 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3347 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3348 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3349
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3350 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3351 * 8: the appsession cookie was looked up very early in 1.2,
3352 * so let's do the same now.
3353 */
3354
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3355 /* It needs to look into the URI unless persistence must be ignored */
3356 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3357 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]3358 }
3359
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3360 /* add unique-id if "header-unique-id" is specified */
3361
3362 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3363 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3364
3365 if (s->fe->header_unique_id && s->unique_id) {
3366 int ret = snprintf(trash, global.tune.bufsize, "%s: %s", s->fe->header_unique_id, s->unique_id);
3367 if (ret < 0 || ret > global.tune.bufsize)
3368 goto return_bad_req;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3369 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, trash) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3370 goto return_bad_req;
3371 }
3372
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3373 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3374 * 9: add X-Forwarded-For if either the frontend or the backend
3375 * asks for it.
3376 */
3377 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3378 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3379 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3380 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3381 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : s->fe->fwdfor_hdr_len,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3382 req->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3383 /* The header is set to be added only if none is present
3384 * and we found it, so don't do anything.
3385 */
3386 }
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3387 else if (s->req->prod->conn.addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3388 /* Add an X-Forwarded-For header unless the source IP is
3389 * in the 'except' network range.
3390 */
3391 if ((!s->fe->except_mask.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3392 (((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]3393 != s->fe->except_net.s_addr) &&
3394 (!s->be->except_mask.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3395 (((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]3396 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3397 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3398 unsigned char *pn;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3399 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn.addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3400
3401 /* Note: we rely on the backend to get the header name to be used for
3402 * x-forwarded-for, because the header is really meant for the backends.
3403 * However, if the backend did not specify any option, we have to rely
3404 * on the frontend's header name.
3405 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3406 if (s->be->fwdfor_hdr_len) {
3407 len = s->be->fwdfor_hdr_len;
3408 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3409 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3410 len = s->fe->fwdfor_hdr_len;
3411 memcpy(trash, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3412 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3413 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3414
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3415 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3416 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3417 }
3418 }
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3419 else if (s->req->prod->conn.addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3420 /* FIXME: for the sake of completeness, we should also support
3421 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3422 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3423 int len;
3424 char pn[INET6_ADDRSTRLEN];
3425 inet_ntop(AF_INET6,
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3426 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn.addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3427 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3428
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3429 /* Note: we rely on the backend to get the header name to be used for
3430 * x-forwarded-for, because the header is really meant for the backends.
3431 * However, if the backend did not specify any option, we have to rely
3432 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3433 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3434 if (s->be->fwdfor_hdr_len) {
3435 len = s->be->fwdfor_hdr_len;
3436 memcpy(trash, s->be->fwdfor_hdr_name, len);
3437 } else {
3438 len = s->fe->fwdfor_hdr_len;
3439 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3440 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3441 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3442
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3443 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3444 goto return_bad_req;
3445 }
3446 }
3447
3448 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3449 * 10: add X-Original-To if either the frontend or the backend
3450 * asks for it.
3451 */
3452 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3453
3454 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3455 if (s->req->prod->conn.addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3456 /* Add an X-Original-To header unless the destination IP is
3457 * in the 'except' network range.
3458 */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3459 conn_get_to_addr(&s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3460
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3461 if (s->req->prod->conn.addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3462 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3463 (((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]3464 != s->fe->except_to.s_addr) &&
3465 (!s->be->except_mask_to.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3466 (((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]3467 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3468 int len;
3469 unsigned char *pn;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3470 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn.addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3471
3472 /* Note: we rely on the backend to get the header name to be used for
3473 * x-original-to, because the header is really meant for the backends.
3474 * However, if the backend did not specify any option, we have to rely
3475 * on the frontend's header name.
3476 */
3477 if (s->be->orgto_hdr_len) {
3478 len = s->be->orgto_hdr_len;
3479 memcpy(trash, s->be->orgto_hdr_name, len);
3480 } else {
3481 len = s->fe->orgto_hdr_len;
3482 memcpy(trash, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3483 }
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3484 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
3485
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3486 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3487 goto return_bad_req;
3488 }
3489 }
3490 }
3491
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3492 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set. */
3493 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3494 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3495 unsigned int want_flags = 0;
3496
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3497 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3498 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3499 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3500 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3501 want_flags |= TX_CON_CLO_SET;
3502 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3503 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3504 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3505 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3506 want_flags |= TX_CON_KAL_SET;
3507 }
3508
3509 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3510 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3511 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3512
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3513
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3514 /* If we have no server assigned yet and we're balancing on url_param
3515 * with a POST request, we may be interested in checking the body for
3516 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3517 */
3518 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3519 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3520 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3521 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3522 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3523 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3524 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3525
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3526 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3527 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3528#ifdef TCP_QUICKACK
3529 /* We expect some data from the client. Unless we know for sure
3530 * we already have a full request, we have to re-enable quick-ack
3531 * in case we previously disabled it, otherwise we might cause
3532 * the client to delay further data.
3533 */
3534 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3535 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3536 (msg->body_len > req->buf.i - txn->req.eoh - 2)))
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3537 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3538#endif
3539 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3540
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3541 /*************************************************************
3542 * OK, that's finished for the headers. We have done what we *
3543 * could. Let's switch to the DATA state. *
3544 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3545 req->analyse_exp = TICK_ETERNITY;
3546 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3547
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3548 /* if the server closes the connection, we want to immediately react
3549 * and close the socket to save packets and syscalls.
3550 */
3551 req->cons->flags |= SI_FL_NOHALF;
3552
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3553 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3554 /* OK let's go on with the BODY now */
3555 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3556
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3557 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3558 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3559 /* we detected a parsing error. We want to archive this request
3560 * in the dedicated proxy area for later troubleshooting.
3561 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3562 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]3563 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3564
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3565 txn->req.msg_state = HTTP_MSG_ERROR;
3566 txn->status = 400;
3567 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3568 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3569
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3570 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3571 if (s->listener->counters)
3572 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3573
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3574 if (!(s->flags & SN_ERR_MASK))
3575 s->flags |= SN_ERR_PRXCOND;
3576 if (!(s->flags & SN_FINST_MASK))
3577 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3578 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3579}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3580
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3581/* This function is an analyser which processes the HTTP tarpit. It always
3582 * returns zero, at the beginning because it prevents any other processing
3583 * from occurring, and at the end because it terminates the request.
3584 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3585int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3586{
3587 struct http_txn *txn = &s->txn;
3588
3589 /* This connection is being tarpitted. The CLIENT side has
3590 * already set the connect expiration date to the right
3591 * timeout. We just have to check that the client is still
3592 * there and that the timeout has not expired.
3593 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3594 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3595 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3596 !tick_is_expired(req->analyse_exp, now_ms))
3597 return 0;
3598
3599 /* We will set the queue timer to the time spent, just for
3600 * logging purposes. We fake a 500 server error, so that the
3601 * attacker will not suspect his connection has been tarpitted.
3602 * It will not cause trouble to the logs because we can exclude
3603 * the tarpitted connections by filtering on the 'PT' status flags.
3604 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3605 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3606
3607 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3608 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3609 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3610
3611 req->analysers = 0;
3612 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3613
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3614 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3615 if (s->listener->counters)
3616 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3617
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3618 if (!(s->flags & SN_ERR_MASK))
3619 s->flags |= SN_ERR_PRXCOND;
3620 if (!(s->flags & SN_FINST_MASK))
3621 s->flags |= SN_FINST_T;
3622 return 0;
3623}
3624
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3625/* This function is an analyser which processes the HTTP request body. It looks
3626 * for parameters to be used for the load balancing algorithm (url_param). It
3627 * must only be called after the standard HTTP request processing has occurred,
3628 * because it expects the request to be parsed. It returns zero if it needs to
3629 * read more data, or 1 once it has completed its analysis.
3630 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3631int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3632{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3633 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3634 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3635 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3636
3637 /* We have to parse the HTTP request body to find any required data.
3638 * "balance url_param check_post" should have been the only way to get
3639 * into this. We were brought here after HTTP header analysis, so all
3640 * related structures are ready.
3641 */
3642
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3643 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3644 goto missing_data;
3645
3646 if (msg->msg_state < HTTP_MSG_100_SENT) {
3647 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3648 * send an HTTP/1.1 100 Continue intermediate response.
3649 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3650 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3651 struct hdr_ctx ctx;
3652 ctx.idx = 0;
3653 /* Expect is allowed in 1.1, look for it */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3654 if (http_find_header2("Expect", 6, req->buf.p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3655 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3656 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3657 }
3658 }
3659 msg->msg_state = HTTP_MSG_100_SENT;
3660 }
3661
3662 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3663 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3664 * req->buf.p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3665 * is still null. We must save the body in msg->next because it
3666 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3667 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3668 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3669
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3670 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3671 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3672 else
3673 msg->msg_state = HTTP_MSG_DATA;
3674 }
3675
3676 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3677 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3678 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3679 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3680 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3681 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3682
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3683 if (!ret)
3684 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3685 else if (ret < 0) {
3686 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3687 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3688 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3689 }
3690
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3691 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3692 * We have the first data byte is in msg->sov. We're waiting for at
3693 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3694 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3695
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3696 if (msg->body_len < limit)
3697 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3698
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3699 if (req->buf.i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3700 goto http_end;
3701
3702 missing_data:
3703 /* we get here if we need to wait for more data */
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]3704 if (buffer_full(&req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3705 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3706 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3707 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3708
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3709 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3710 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3711 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3712
3713 if (!(s->flags & SN_ERR_MASK))
3714 s->flags |= SN_ERR_CLITO;
3715 if (!(s->flags & SN_FINST_MASK))
3716 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3717 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3718 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3719
3720 /* we get here if we need to wait for more data */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3721 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]3722 /* Not enough data. We'll re-use the http-request
3723 * timeout here. Ideally, we should set the timeout
3724 * relative to the accept() date. We just set the
3725 * request timeout once at the beginning of the
3726 * request.
3727 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3728 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3729 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3730 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3731 return 0;
3732 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3733
3734 http_end:
3735 /* The situation will not evolve, so let's give up on the analysis. */
3736 s->logs.tv_request = now; /* update the request timer to reflect full request */
3737 req->analysers &= ~an_bit;
3738 req->analyse_exp = TICK_ETERNITY;
3739 return 1;
3740
3741 return_bad_req: /* let's centralize all bad requests */
3742 txn->req.msg_state = HTTP_MSG_ERROR;
3743 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3744 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3745
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3746 if (!(s->flags & SN_ERR_MASK))
3747 s->flags |= SN_ERR_PRXCOND;
3748 if (!(s->flags & SN_FINST_MASK))
3749 s->flags |= SN_FINST_R;
3750
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3751 return_err_msg:
3752 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3753 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3754 if (s->listener->counters)
3755 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3756 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3757}
3758
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3759/* send a server's name with an outgoing request over an established connection.
3760 * Note: this function is designed to be called once the request has been scheduled
3761 * for being forwarded. This is the reason why it rewinds the buffer before
3762 * proceeding.
3763 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3764int 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]3765
3766 struct hdr_ctx ctx;
3767
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3768 char *hdr_name = be->server_id_hdr_name;
3769 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3770 struct channel *req = txn->req.buf;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3771 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3772 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3773
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3774 ctx.idx = 0;
3775
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3776 old_o = req->buf.o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3777 if (old_o) {
3778 /* The request was already skipped, let's restore it */
Willy Tarreaua75bcef2012-08-24 22:56:11 +0200[diff] [blame]3779 b_rew(&req->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3780 }
3781
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3782 old_i = req->buf.i;
3783 while (http_find_header2(hdr_name, hdr_name_len, txn->req.buf->buf.p, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3784 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3785 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3786 }
3787
3788 /* Add the new header requested with the server value */
3789 hdr_val = trash;
3790 memcpy(hdr_val, hdr_name, hdr_name_len);
3791 hdr_val += hdr_name_len;
3792 *hdr_val++ = ':';
3793 *hdr_val++ = ' ';
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]3794 hdr_val += strlcpy2(hdr_val, srv_name, trash + trashlen - hdr_val);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3795 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, hdr_val - trash);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3796
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3797 if (old_o) {
3798 /* If this was a forwarded request, we must readjust the amount of
3799 * data to be forwarded in order to take into account the size
3800 * variations.
3801 */
Willy Tarreaua75bcef2012-08-24 22:56:11 +0200[diff] [blame]3802 b_adv(&req->buf, old_o + req->buf.i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3803 }
3804
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3805 return 0;
3806}
3807
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3808/* Terminate current transaction and prepare a new one. This is very tricky
3809 * right now but it works.
3810 */
3811void http_end_txn_clean_session(struct session *s)
3812{
3813 /* FIXME: We need a more portable way of releasing a backend's and a
3814 * server's connections. We need a safer way to reinitialize buffer
3815 * flags. We also need a more accurate method for computing per-request
3816 * data.
3817 */
3818 http_silent_debug(__LINE__, s);
3819
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3820 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]3821 si_shutr(s->req->cons);
3822 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3823
3824 http_silent_debug(__LINE__, s);
3825
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3826 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3827 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3828 if (unlikely(s->srv_conn))
3829 sess_change_server(s, NULL);
3830 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3831
3832 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
3833 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]3834 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3835
3836 if (s->txn.status) {
3837 int n;
3838
3839 n = s->txn.status / 100;
3840 if (n < 1 || n > 5)
3841 n = 0;
3842
3843 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3844 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3845
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]3846 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3847 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3848 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3849 }
3850
3851 /* don't count other requests' data */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3852 s->logs.bytes_in -= s->req->buf.i;
3853 s->logs.bytes_out -= s->rep->buf.i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3854
3855 /* let's do a final log if we need it */
3856 if (s->logs.logwait &&
3857 !(s->flags & SN_MONITOR) &&
3858 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
3859 s->do_log(s);
3860 }
3861
3862 s->logs.accept_date = date; /* user-visible date for logging */
3863 s->logs.tv_accept = now; /* corrected date for internal use */
3864 tv_zero(&s->logs.tv_request);
3865 s->logs.t_queue = -1;
3866 s->logs.t_connect = -1;
3867 s->logs.t_data = -1;
3868 s->logs.t_close = 0;
3869 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
3870 s->logs.srv_queue_size = 0; /* we will get this number soon */
3871
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3872 s->logs.bytes_in = s->req->total = s->req->buf.i;
3873 s->logs.bytes_out = s->rep->total = s->rep->buf.i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3874
3875 if (s->pend_pos)
3876 pendconn_free(s->pend_pos);
3877
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3878 if (target_srv(&s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3879 if (s->flags & SN_CURR_SESS) {
3880 s->flags &= ~SN_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3881 target_srv(&s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3882 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3883 if (may_dequeue_tasks(target_srv(&s->target), s->be))
3884 process_srv_queue(target_srv(&s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3885 }
3886
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]3887 clear_target(&s->target);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3888
3889 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3890 s->req->cons->conn.t.sock.fd = -1; /* just to help with debugging */
Willy Tarreau505e34a2012-07-06 10:17:53 +0200[diff] [blame]3891 s->req->cons->conn.flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3892 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]3893 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3894 s->req->cons->err_loc = NULL;
3895 s->req->cons->exp = TICK_ETERNITY;
3896 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3897 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
3898 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]3899 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]3900 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
3901 s->txn.meth = 0;
3902 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]3903 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]3904 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3905 s->req->cons->flags |= SI_FL_INDEP_STR;
3906
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3907 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3908 s->req->flags |= CF_NEVER_WAIT;
3909 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3910 }
3911
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3912 /* if the request buffer is not empty, it means we're
3913 * about to process another request, so send pending
3914 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3915 * Just don't do this if the buffer is close to be full,
3916 * because the request will wait for it to flush a little
3917 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3918 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3919 if (s->req->buf.i) {
3920 if (s->rep->buf.o &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]3921 !buffer_full(&s->rep->buf, global.tune.maxrewrite) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3922 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]3923 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3924 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3925
3926 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3927 channel_auto_read(s->req);
3928 channel_auto_close(s->req);
3929 channel_auto_read(s->rep);
3930 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3931
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]3932 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3933 s->rep->analysers = 0;
3934
3935 http_silent_debug(__LINE__, s);
3936}
3937
3938
3939/* This function updates the request state machine according to the response
3940 * state machine and buffer flags. It returns 1 if it changes anything (flag
3941 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3942 * it is only used to find when a request/response couple is complete. Both
3943 * this function and its equivalent should loop until both return zero. It
3944 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3945 */
3946int http_sync_req_state(struct session *s)
3947{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3948 struct channel *buf = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3949 struct http_txn *txn = &s->txn;
3950 unsigned int old_flags = buf->flags;
3951 unsigned int old_state = txn->req.msg_state;
3952
3953 http_silent_debug(__LINE__, s);
3954 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
3955 return 0;
3956
3957 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3958 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3959 * We can shut the read side unless we want to abort_on_close,
3960 * or we have a POST request. The issue with POST requests is
3961 * that some browsers still send a CRLF after the request, and
3962 * this CRLF must be read so that it does not remain in the kernel
3963 * buffers, otherwise a close could cause an RST on some systems
3964 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3965 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3966 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3967 channel_dont_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3968
3969 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
3970 goto wait_other_side;
3971
3972 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
3973 /* The server has not finished to respond, so we
3974 * don't want to move in order not to upset it.
3975 */
3976 goto wait_other_side;
3977 }
3978
3979 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
3980 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3981 channel_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3982 txn->req.msg_state = HTTP_MSG_TUNNEL;
3983 goto wait_other_side;
3984 }
3985
3986 /* When we get here, it means that both the request and the
3987 * response have finished receiving. Depending on the connection
3988 * mode, we'll have to wait for the last bytes to leave in either
3989 * direction, and sometimes for a close to be effective.
3990 */
3991
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3992 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
3993 /* Server-close mode : queue a connection close to the server */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3994 if (!(buf->flags & (CF_SHUTW|CF_SHUTW_NOW)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3995 channel_shutw_now(buf);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3996 }
3997 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
3998 /* Option forceclose is set, or either side wants to close,
3999 * let's enforce it now that we're not expecting any new
4000 * data to come. The caller knows the session is complete
4001 * once both states are CLOSED.
4002 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4003 if (!(buf->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4004 channel_shutr_now(buf);
4005 channel_shutw_now(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4006 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4007 }
4008 else {
4009 /* The last possible modes are keep-alive and tunnel. Since tunnel
4010 * mode does not set the body analyser, we can't reach this place
4011 * in tunnel mode, so we're left with keep-alive only.
4012 * This mode is currently not implemented, we switch to tunnel mode.
4013 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4014 channel_auto_read(buf);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4015 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4016 }
4017
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4018 if (buf->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4019 /* if we've just closed an output, let's switch */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4020 buf->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
4021
Willy Tarreau8e21bb92012-08-24 22:40:29 +0200[diff] [blame]4022 if (!channel_is_empty(buf)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4023 txn->req.msg_state = HTTP_MSG_CLOSING;
4024 goto http_msg_closing;
4025 }
4026 else {
4027 txn->req.msg_state = HTTP_MSG_CLOSED;
4028 goto http_msg_closed;
4029 }
4030 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4031 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4032 }
4033
4034 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4035 http_msg_closing:
4036 /* nothing else to forward, just waiting for the output buffer
4037 * to be empty and for the shutw_now to take effect.
4038 */
Willy Tarreau8e21bb92012-08-24 22:40:29 +0200[diff] [blame]4039 if (channel_is_empty(buf)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4040 txn->req.msg_state = HTTP_MSG_CLOSED;
4041 goto http_msg_closed;
4042 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4043 else if (buf->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4044 txn->req.msg_state = HTTP_MSG_ERROR;
4045 goto wait_other_side;
4046 }
4047 }
4048
4049 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4050 http_msg_closed:
4051 goto wait_other_side;
4052 }
4053
4054 wait_other_side:
4055 http_silent_debug(__LINE__, s);
4056 return txn->req.msg_state != old_state || buf->flags != old_flags;
4057}
4058
4059
4060/* This function updates the response state machine according to the request
4061 * state machine and buffer flags. It returns 1 if it changes anything (flag
4062 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4063 * it is only used to find when a request/response couple is complete. Both
4064 * this function and its equivalent should loop until both return zero. It
4065 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4066 */
4067int http_sync_res_state(struct session *s)
4068{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4069 struct channel *buf = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4070 struct http_txn *txn = &s->txn;
4071 unsigned int old_flags = buf->flags;
4072 unsigned int old_state = txn->rsp.msg_state;
4073
4074 http_silent_debug(__LINE__, s);
4075 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4076 return 0;
4077
4078 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4079 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4080 * still monitor the server connection for a possible close
4081 * while the request is being uploaded, so we don't disable
4082 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4083 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4084 /* channel_dont_read(buf); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4085
4086 if (txn->req.msg_state == HTTP_MSG_ERROR)
4087 goto wait_other_side;
4088
4089 if (txn->req.msg_state < HTTP_MSG_DONE) {
4090 /* The client seems to still be sending data, probably
4091 * because we got an error response during an upload.
4092 * We have the choice of either breaking the connection
4093 * or letting it pass through. Let's do the later.
4094 */
4095 goto wait_other_side;
4096 }
4097
4098 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4099 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4100 channel_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4101 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
4102 goto wait_other_side;
4103 }
4104
4105 /* When we get here, it means that both the request and the
4106 * response have finished receiving. Depending on the connection
4107 * mode, we'll have to wait for the last bytes to leave in either
4108 * direction, and sometimes for a close to be effective.
4109 */
4110
4111 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4112 /* Server-close mode : shut read and wait for the request
4113 * side to close its output buffer. The caller will detect
4114 * when we're in DONE and the other is in CLOSED and will
4115 * catch that for the final cleanup.
4116 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4117 if (!(buf->flags & (CF_SHUTR|CF_SHUTR_NOW)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4118 channel_shutr_now(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4119 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4120 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4121 /* Option forceclose is set, or either side wants to close,
4122 * let's enforce it now that we're not expecting any new
4123 * data to come. The caller knows the session is complete
4124 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4125 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4126 if (!(buf->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4127 channel_shutr_now(buf);
4128 channel_shutw_now(buf);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4129 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4130 }
4131 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4132 /* The last possible modes are keep-alive and tunnel. Since tunnel
4133 * mode does not set the body analyser, we can't reach this place
4134 * in tunnel mode, so we're left with keep-alive only.
4135 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4136 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4137 channel_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4138 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4139 }
4140
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4141 if (buf->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4142 /* if we've just closed an output, let's switch */
Willy Tarreau8e21bb92012-08-24 22:40:29 +0200[diff] [blame]4143 if (!channel_is_empty(buf)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4144 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4145 goto http_msg_closing;
4146 }
4147 else {
4148 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4149 goto http_msg_closed;
4150 }
4151 }
4152 goto wait_other_side;
4153 }
4154
4155 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4156 http_msg_closing:
4157 /* nothing else to forward, just waiting for the output buffer
4158 * to be empty and for the shutw_now to take effect.
4159 */
Willy Tarreau8e21bb92012-08-24 22:40:29 +0200[diff] [blame]4160 if (channel_is_empty(buf)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4161 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4162 goto http_msg_closed;
4163 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4164 else if (buf->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4165 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4166 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4167 if (target_srv(&s->target))
4168 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4169 goto wait_other_side;
4170 }
4171 }
4172
4173 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4174 http_msg_closed:
4175 /* drop any pending data */
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4176 bi_erase(buf);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4177 channel_auto_close(buf);
4178 channel_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4179 goto wait_other_side;
4180 }
4181
4182 wait_other_side:
4183 http_silent_debug(__LINE__, s);
4184 return txn->rsp.msg_state != old_state || buf->flags != old_flags;
4185}
4186
4187
4188/* Resync the request and response state machines. Return 1 if either state
4189 * changes.
4190 */
4191int http_resync_states(struct session *s)
4192{
4193 struct http_txn *txn = &s->txn;
4194 int old_req_state = txn->req.msg_state;
4195 int old_res_state = txn->rsp.msg_state;
4196
4197 http_silent_debug(__LINE__, s);
4198 http_sync_req_state(s);
4199 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4200 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4201 if (!http_sync_res_state(s))
4202 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4203 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4204 if (!http_sync_req_state(s))
4205 break;
4206 }
4207 http_silent_debug(__LINE__, s);
4208 /* OK, both state machines agree on a compatible state.
4209 * There are a few cases we're interested in :
4210 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4211 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4212 * directions, so let's simply disable both analysers.
4213 * - HTTP_MSG_CLOSED on the response only means we must abort the
4214 * request.
4215 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4216 * with server-close mode means we've completed one request and we
4217 * must re-initialize the server connection.
4218 */
4219
4220 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4221 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4222 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4223 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4224 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4225 channel_auto_close(s->req);
4226 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4227 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4228 channel_auto_close(s->rep);
4229 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4230 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4231 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4232 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4233 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4234 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4235 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4236 channel_auto_close(s->rep);
4237 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4238 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4239 channel_abort(s->req);
4240 channel_auto_close(s->req);
4241 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4242 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4243 }
4244 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4245 txn->rsp.msg_state == HTTP_MSG_DONE &&
4246 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4247 /* server-close: terminate this server connection and
4248 * reinitialize a fresh-new transaction.
4249 */
4250 http_end_txn_clean_session(s);
4251 }
4252
4253 http_silent_debug(__LINE__, s);
4254 return txn->req.msg_state != old_req_state ||
4255 txn->rsp.msg_state != old_res_state;
4256}
4257
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4258/* This function is an analyser which forwards request body (including chunk
4259 * sizes if any). It is called as soon as we must forward, even if we forward
4260 * zero byte. The only situation where it must not be called is when we're in
4261 * tunnel mode and we want to forward till the close. It's used both to forward
4262 * remaining data and to resync after end of body. It expects the msg_state to
4263 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4264 * 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]4265 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4266 * bytes of pending data + the headers if not already done (between sol and sov).
4267 * 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]4268 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4269int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4270{
4271 struct http_txn *txn = &s->txn;
4272 struct http_msg *msg = &s->txn.req;
4273
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4274 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4275 return 0;
4276
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4277 if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
4278 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf.o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4279 /* Output closed while we were sending data. We must abort and
4280 * wake the other side up.
4281 */
4282 msg->msg_state = HTTP_MSG_ERROR;
4283 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4284 return 1;
4285 }
4286
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4287 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4288 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4289
4290 /* Note that we don't have to send 100-continue back because we don't
4291 * need the data to complete our job, and it's up to the server to
4292 * decide whether to return 100, 417 or anything else in return of
4293 * an "Expect: 100-continue" header.
4294 */
4295
4296 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4297 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4298 * req->buf.p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4299 * is still null. We must save the body in msg->next because it
4300 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4301 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4302 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4303
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4304 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4305 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4306 else {
4307 msg->msg_state = HTTP_MSG_DATA;
4308 }
4309 }
4310
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4311 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4312 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4313
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4314 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4315 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4316 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4317 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4318 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4319 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4320 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4321 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4322 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4323
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4324 if (msg->msg_state == HTTP_MSG_DATA) {
4325 /* must still forward */
4326 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4327 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4328
4329 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4330 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4331 msg->msg_state = HTTP_MSG_DATA_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4332 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4333 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4334 }
4335 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4336 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4337 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4338 * TRAILERS state.
4339 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4340 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4341
4342 if (!ret)
4343 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4344 else if (ret < 0) {
4345 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4346 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4347 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]4348 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4349 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4350 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4351 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4352 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
4353 /* we want the CRLF after the data */
4354 int ret;
4355
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4356 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4357
4358 if (ret == 0)
4359 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4360 else if (ret < 0) {
4361 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4362 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4363 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_DATA_CRLF, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4364 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4365 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4366 /* we're in MSG_CHUNK_SIZE now */
4367 }
4368 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4369 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4370
4371 if (ret == 0)
4372 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4373 else if (ret < 0) {
4374 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4375 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4376 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]4377 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4378 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4379 /* we're in HTTP_MSG_DONE now */
4380 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4381 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4382 int old_state = msg->msg_state;
4383
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4384 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4385 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4386 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4387 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4388 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4389 if (http_resync_states(s)) {
4390 /* some state changes occurred, maybe the analyser
4391 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4392 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4393 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4394 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4395 /* request errors are most likely due to
4396 * the server aborting the transfer.
4397 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4398 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4399 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4400 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4401 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4402 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4403 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4404 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4405 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4406
4407 /* If "option abortonclose" is set on the backend, we
4408 * want to monitor the client's connection and forward
4409 * any shutdown notification to the server, which will
4410 * decide whether to close or to go on processing the
4411 * request.
4412 */
4413 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4414 channel_auto_read(req);
4415 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4416 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4417 else if (s->txn.meth == HTTP_METH_POST) {
4418 /* POST requests may require to read extra CRLF
4419 * sent by broken browsers and which could cause
4420 * an RST to be sent upon close on some systems
4421 * (eg: Linux).
4422 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4423 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4424 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4425
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4426 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4427 }
4428 }
4429
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4430 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4431 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4432 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4433 if (!(s->flags & SN_ERR_MASK))
4434 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4435 if (!(s->flags & SN_FINST_MASK)) {
4436 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4437 s->flags |= SN_FINST_H;
4438 else
4439 s->flags |= SN_FINST_D;
4440 }
4441
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4442 s->fe->fe_counters.cli_aborts++;
4443 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4444 if (target_srv(&s->target))
4445 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4446
4447 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4448 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4449
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4450 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4451 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4452 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4453
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4454 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4455 * 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]4456 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4457 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4458 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4459
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4460 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4461 * 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]4462 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4463 * modes are already handled by the stream sock layer. We must not do
4464 * this in content-length mode because it could present the MSG_MORE
4465 * flag with the last block of forwarded data, which would cause an
4466 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4467 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4468 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4469 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4470
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4471 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4472 return 0;
4473
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4474 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4475 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4476 if (s->listener->counters)
4477 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4478 return_bad_req_stats_ok:
4479 txn->req.msg_state = HTTP_MSG_ERROR;
4480 if (txn->status) {
4481 /* Note: we don't send any error if some data were already sent */
4482 stream_int_retnclose(req->prod, NULL);
4483 } else {
4484 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4485 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4486 }
4487 req->analysers = 0;
4488 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]4489
4490 if (!(s->flags & SN_ERR_MASK))
4491 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4492 if (!(s->flags & SN_FINST_MASK)) {
4493 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4494 s->flags |= SN_FINST_H;
4495 else
4496 s->flags |= SN_FINST_D;
4497 }
4498 return 0;
4499
4500 aborted_xfer:
4501 txn->req.msg_state = HTTP_MSG_ERROR;
4502 if (txn->status) {
4503 /* Note: we don't send any error if some data were already sent */
4504 stream_int_retnclose(req->prod, NULL);
4505 } else {
4506 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4507 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4508 }
4509 req->analysers = 0;
4510 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4511
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4512 s->fe->fe_counters.srv_aborts++;
4513 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4514 if (target_srv(&s->target))
4515 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4516
4517 if (!(s->flags & SN_ERR_MASK))
4518 s->flags |= SN_ERR_SRVCL;
4519 if (!(s->flags & SN_FINST_MASK)) {
4520 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4521 s->flags |= SN_FINST_H;
4522 else
4523 s->flags |= SN_FINST_D;
4524 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4525 return 0;
4526}
4527
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4528/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4529 * processing can continue on next analysers, or zero if it either needs more
4530 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4531 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4532 * when it has nothing left to do, and may remove any analyser when it wants to
4533 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4534 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4535int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4536{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4537 struct http_txn *txn = &s->txn;
4538 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4539 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4540 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4541 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4542 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4543
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4544 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]4545 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4546 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4547 rep,
4548 rep->rex, rep->wex,
4549 rep->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4550 rep->buf.i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4551 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4552
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4553 /*
4554 * Now parse the partial (or complete) lines.
4555 * We will check the response syntax, and also join multi-line
4556 * headers. An index of all the lines will be elaborated while
4557 * parsing.
4558 *
4559 * For the parsing, we use a 28 states FSM.
4560 *
4561 * Here is the information we currently have :
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4562 * rep->buf.p = beginning of response
4563 * rep->buf.p + msg->eoh = end of processed headers / start of current one
4564 * rep->buf.p + rep->buf.i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4565 * msg->eol = end of current header or line (LF or CRLF)
4566 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4567 */
4568
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4569 /* There's a protected area at the end of the buffer for rewriting
4570 * purposes. We don't want to start to parse the request if the
4571 * protected area is affected, because we may have to move processed
4572 * data later, which is much more complicated.
4573 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4574 if (buffer_not_empty(&rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4575 if (unlikely(channel_full(rep) ||
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4576 bi_end(&rep->buf) < b_ptr(&rep->buf, msg->next) ||
4577 bi_end(&rep->buf) > rep->buf.data + rep->buf.size - global.tune.maxrewrite)) {
4578 if (rep->buf.o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4579 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4580 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4581 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4582 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4583 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4584 return 0;
4585 }
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4586 if (rep->buf.i <= rep->buf.size - global.tune.maxrewrite)
4587 buffer_slow_realign(&msg->buf->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4588 }
4589
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4590 if (likely(msg->next < rep->buf.i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4591 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4592 }
4593
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4594 /* 1: we might have to print this header in debug mode */
4595 if (unlikely((global.mode & MODE_DEBUG) &&
4596 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4597 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4598 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4599
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4600 sol = rep->buf.p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]4601 eol = sol + msg->sl.st.l;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4602 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4603
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4604 sol += hdr_idx_first_pos(&txn->hdr_idx);
4605 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4606
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4607 while (cur_idx) {
4608 eol = sol + txn->hdr_idx.v[cur_idx].len;
4609 debug_hdr("srvhdr", s, sol, eol);
4610 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4611 cur_idx = txn->hdr_idx.v[cur_idx].next;
4612 }
4613 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4614
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4615 /*
4616 * Now we quickly check if we have found a full valid response.
4617 * If not so, we check the FD and buffer states before leaving.
4618 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4619 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4620 * responses are checked first.
4621 *
4622 * Depending on whether the client is still there or not, we
4623 * may send an error response back or not. Note that normally
4624 * we should only check for HTTP status there, and check I/O
4625 * errors somewhere else.
4626 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4627
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4628 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4629 /* Invalid response */
4630 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4631 /* we detected a parsing error. We want to archive this response
4632 * in the dedicated proxy area for later troubleshooting.
4633 */
4634 hdr_response_bad:
4635 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4636 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]4637
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4638 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4639 if (target_srv(&s->target)) {
4640 target_srv(&s->target)->counters.failed_resp++;
4641 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4642 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4643 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4644 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4645 rep->analysers = 0;
4646 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4647 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4648 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4649 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4650
4651 if (!(s->flags & SN_ERR_MASK))
4652 s->flags |= SN_ERR_PRXCOND;
4653 if (!(s->flags & SN_FINST_MASK))
4654 s->flags |= SN_FINST_H;
4655
4656 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4657 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4658
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4659 /* too large response does not fit in buffer. */
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4660 else if (buffer_full(&rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4661 if (msg->err_pos < 0)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4662 msg->err_pos = rep->buf.i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4663 goto hdr_response_bad;
4664 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4665
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4666 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4667 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4668 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4669 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]4670
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4671 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4672 if (target_srv(&s->target)) {
4673 target_srv(&s->target)->counters.failed_resp++;
4674 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4675 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4676
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4677 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4678 rep->analysers = 0;
4679 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4680 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4681 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4682 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4683
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4684 if (!(s->flags & SN_ERR_MASK))
4685 s->flags |= SN_ERR_SRVCL;
4686 if (!(s->flags & SN_FINST_MASK))
4687 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4688 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4689 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4690
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4691 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4692 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4693 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4694 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]4695
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4696 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4697 if (target_srv(&s->target)) {
4698 target_srv(&s->target)->counters.failed_resp++;
4699 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4700 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4701
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4702 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4703 rep->analysers = 0;
4704 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4705 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4706 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4707 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4708
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4709 if (!(s->flags & SN_ERR_MASK))
4710 s->flags |= SN_ERR_SRVTO;
4711 if (!(s->flags & SN_FINST_MASK))
4712 s->flags |= SN_FINST_H;
4713 return 0;
4714 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4715
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4716 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4717 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4718 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4719 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]4720
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4721 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4722 if (target_srv(&s->target)) {
4723 target_srv(&s->target)->counters.failed_resp++;
4724 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4725 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4726
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4727 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4728 rep->analysers = 0;
4729 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4730 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4731 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4732 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4733
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4734 if (!(s->flags & SN_ERR_MASK))
4735 s->flags |= SN_ERR_SRVCL;
4736 if (!(s->flags & SN_FINST_MASK))
4737 s->flags |= SN_FINST_H;
4738 return 0;
4739 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4740
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4741 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4742 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4743 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4744 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]4745
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4746 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4747 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4748 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4749
4750 if (!(s->flags & SN_ERR_MASK))
4751 s->flags |= SN_ERR_CLICL;
4752 if (!(s->flags & SN_FINST_MASK))
4753 s->flags |= SN_FINST_H;
4754
4755 /* process_session() will take care of the error */
4756 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4757 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4758
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4759 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4760 return 0;
4761 }
4762
4763 /* More interesting part now : we know that we have a complete
4764 * response which at least looks like HTTP. We have an indicator
4765 * of each header's length, so we can parse them quickly.
4766 */
4767
4768 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4769 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]4770
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4771 /*
4772 * 1: get the status code
4773 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4774 n = rep->buf.p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4775 if (n < 1 || n > 5)
4776 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4777 /* when the client triggers a 4xx from the server, it's most often due
4778 * to a missing object or permission. These events should be tracked
4779 * because if they happen often, it may indicate a brute force or a
4780 * vulnerability scan.
4781 */
4782 if (n == 4)
4783 session_inc_http_err_ctr(s);
4784
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4785 if (target_srv(&s->target))
4786 target_srv(&s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4787
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4788 /* check if the response is HTTP/1.1 or above */
4789 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4790 ((rep->buf.p[5] > '1') ||
4791 ((rep->buf.p[5] == '1') && (rep->buf.p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4792 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4793
4794 /* "connection" has not been parsed yet */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4795 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4796
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4797 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4798 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4799
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4800 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]4801
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]4802 /* Adjust server's health based on status code. Note: status codes 501
4803 * and 505 are triggered on demand by client request, so we must not
4804 * count them as server failures.
4805 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4806 if (target_srv(&s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4807 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4808 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4809 else
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4810 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4811 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4812
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4813 /*
4814 * 2: check for cacheability.
4815 */
4816
4817 switch (txn->status) {
4818 case 200:
4819 case 203:
4820 case 206:
4821 case 300:
4822 case 301:
4823 case 410:
4824 /* RFC2616 @13.4:
4825 * "A response received with a status code of
4826 * 200, 203, 206, 300, 301 or 410 MAY be stored
4827 * by a cache (...) unless a cache-control
4828 * directive prohibits caching."
4829 *
4830 * RFC2616 @9.5: POST method :
4831 * "Responses to this method are not cacheable,
4832 * unless the response includes appropriate
4833 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4834 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4835 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]4836 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4837 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
4838 break;
4839 default:
4840 break;
4841 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4842
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4843 /*
4844 * 3: we may need to capture headers
4845 */
4846 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]4847 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4848 capture_headers(rep->buf.p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4849 txn->rsp.cap, s->fe->rsp_cap);
4850
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4851 /* 4: determine the transfer-length.
4852 * According to RFC2616 #4.4, amended by the HTTPbis working group,
4853 * the presence of a message-body in a RESPONSE and its transfer length
4854 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4855 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4856 * All responses to the HEAD request method MUST NOT include a
4857 * message-body, even though the presence of entity-header fields
4858 * might lead one to believe they do. All 1xx (informational), 204
4859 * (No Content), and 304 (Not Modified) responses MUST NOT include a
4860 * message-body. All other responses do include a message-body,
4861 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4862 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4863 * 1. Any response which "MUST NOT" include a message-body (such as the
4864 * 1xx, 204 and 304 responses and any response to a HEAD request) is
4865 * always terminated by the first empty line after the header fields,
4866 * regardless of the entity-header fields present in the message.
4867 *
4868 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
4869 * the "chunked" transfer-coding (Section 6.2) is used, the
4870 * transfer-length is defined by the use of this transfer-coding.
4871 * If a Transfer-Encoding header field is present and the "chunked"
4872 * transfer-coding is not present, the transfer-length is defined by
4873 * the sender closing the connection.
4874 *
4875 * 3. If a Content-Length header field is present, its decimal value in
4876 * OCTETs represents both the entity-length and the transfer-length.
4877 * If a message is received with both a Transfer-Encoding header
4878 * field and a Content-Length header field, the latter MUST be ignored.
4879 *
4880 * 4. If the message uses the media type "multipart/byteranges", and
4881 * the transfer-length is not otherwise specified, then this self-
4882 * delimiting media type defines the transfer-length. This media
4883 * type MUST NOT be used unless the sender knows that the recipient
4884 * can parse it; the presence in a request of a Range header with
4885 * multiple byte-range specifiers from a 1.1 client implies that the
4886 * client can parse multipart/byteranges responses.
4887 *
4888 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4889 */
4890
4891 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4892 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4893 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4894 * FIXME: should we parse anyway and return an error on chunked encoding ?
4895 */
4896 if (txn->meth == HTTP_METH_HEAD ||
4897 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4898 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4899 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4900 goto skip_content_length;
4901 }
4902
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4903 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4904 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4905 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4906 http_find_header2("Transfer-Encoding", 17, rep->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4907 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4908 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
4909 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4910 /* bad transfer-encoding (chunked followed by something else) */
4911 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4912 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4913 break;
4914 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4915 }
4916
4917 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
4918 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4919 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4920 http_find_header2("Content-Length", 14, rep->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4921 signed long long cl;
4922
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4923 if (!ctx.vlen) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4924 msg->err_pos = ctx.line + ctx.val - rep->buf.p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4925 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4926 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4927
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4928 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4929 msg->err_pos = ctx.line + ctx.val - rep->buf.p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4930 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4931 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4932
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4933 if (cl < 0) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4934 msg->err_pos = ctx.line + ctx.val - rep->buf.p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4935 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4936 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4937
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4938 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4939 msg->err_pos = ctx.line + ctx.val - rep->buf.p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4940 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4941 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4942
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4943 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4944 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4945 }
4946
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4947 /* FIXME: we should also implement the multipart/byterange method.
4948 * For now on, we resort to close mode in this case (unknown length).
4949 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4950skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4951
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4952 /* end of job, return OK */
4953 rep->analysers &= ~an_bit;
4954 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4955 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4956 return 1;
4957}
4958
4959/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]4960 * It normally returns 1 unless it wants to break. It relies on buffers flags,
4961 * and updates t->rep->analysers. It might make sense to explode it into several
4962 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4963 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4964int 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]4965{
4966 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4967 struct http_msg *msg = &txn->rsp;
4968 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4969 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4970
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4971 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]4972 now_ms, __FUNCTION__,
4973 t,
4974 rep,
4975 rep->rex, rep->wex,
4976 rep->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4977 rep->buf.i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4978 rep->analysers);
4979
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4980 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4981 return 0;
4982
4983 rep->analysers &= ~an_bit;
4984 rep->analyse_exp = TICK_ETERNITY;
4985
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4986 /* Now we have to check if we need to modify the Connection header.
4987 * This is more difficult on the response than it is on the request,
4988 * because we can have two different HTTP versions and we don't know
4989 * how the client will interprete a response. For instance, let's say
4990 * that the client sends a keep-alive request in HTTP/1.0 and gets an
4991 * HTTP/1.1 response without any header. Maybe it will bound itself to
4992 * HTTP/1.0 because it only knows about it, and will consider the lack
4993 * of header as a close, or maybe it knows HTTP/1.1 and can consider
4994 * the lack of header as a keep-alive. Thus we will use two flags
4995 * indicating how a request MAY be understood by the client. In case
4996 * of multiple possibilities, we'll fix the header to be explicit. If
4997 * ambiguous cases such as both close and keepalive are seen, then we
4998 * will fall back to explicit close. Note that we won't take risks with
4999 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5000 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5001 */
5002
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5003 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5004 txn->status == 101)) {
5005 /* Either we've established an explicit tunnel, or we're
5006 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5007 * to understand the next protocols. We have to switch to tunnel
5008 * mode, so that we transfer the request and responses then let
5009 * this protocol pass unmodified. When we later implement specific
5010 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5011 * header which contains information about that protocol for
5012 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5013 */
5014 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5015 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5016 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5017 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5018 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5019 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5020
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5021 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5022 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5023 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5024 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5025
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5026 /* now adjust header transformations depending on current state */
5027 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5028 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5029 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5030 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5031 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5032 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5033 else { /* SCL / KAL */
5034 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5035 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5036 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5037 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5038
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5039 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5040 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5041
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5042 /* Some keep-alive responses are converted to Server-close if
5043 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5044 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5045 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5046 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5047 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5048 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5049 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5050 }
5051
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5052 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5053 /*
5054 * 3: we will have to evaluate the filters.
5055 * As opposed to version 1.2, now they will be evaluated in the
5056 * filters order and not in the header order. This means that
5057 * each filter has to be validated among all headers.
5058 *
5059 * Filters are tried with ->be first, then with ->fe if it is
5060 * different from ->be.
5061 */
5062
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5063 cur_proxy = t->be;
5064 while (1) {
5065 struct proxy *rule_set = cur_proxy;
5066
5067 /* try headers filters */
5068 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5069 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5070 return_bad_resp:
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5071 if (target_srv(&t->target)) {
5072 target_srv(&t->target)->counters.failed_resp++;
5073 health_adjust(target_srv(&t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5074 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5075 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5076 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5077 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5078 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5079 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5080 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5081 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5082 if (!(t->flags & SN_ERR_MASK))
5083 t->flags |= SN_ERR_PRXCOND;
5084 if (!(t->flags & SN_FINST_MASK))
5085 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5086 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5087 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5088 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5089
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5090 /* has the response been denied ? */
5091 if (txn->flags & TX_SVDENY) {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5092 if (target_srv(&t->target))
5093 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5094
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5095 t->be->be_counters.denied_resp++;
5096 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5097 if (t->listener->counters)
5098 t->listener->counters->denied_resp++;
5099
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5100 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5101 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5102
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5103 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5104 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5105 if (txn->status < 200)
5106 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5107 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5108 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]5109 ret = acl_pass(ret);
5110 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5111 ret = !ret;
5112 if (!ret)
5113 continue;
5114 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5115 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5116 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5117 }
5118
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5119 /* check whether we're already working on the frontend */
5120 if (cur_proxy == t->fe)
5121 break;
5122 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5123 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5124
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5125 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5126 * We may be facing a 100-continue response, in which case this
5127 * is not the right response, and we're waiting for the next one.
5128 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5129 * next one.
5130 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5131 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5132 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5133 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5134 msg->msg_state = HTTP_MSG_RPBEFORE;
5135 txn->status = 0;
5136 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5137 return 1;
5138 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5139 else if (unlikely(txn->status < 200))
5140 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5141
5142 /* we don't have any 1xx status code now */
5143
5144 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5145 * 4: check for server cookie.
5146 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5147 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5148 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5149 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5150
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5151
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5152 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5153 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5154 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5155 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]5156 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5157
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5158 /*
5159 * 6: add server cookie in the response if needed
5160 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5161 if (target_srv(&t->target) && (t->be->ck_opts & PR_CK_INS) &&
5162 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5163 (!(t->flags & SN_DIRECT) ||
5164 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5165 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5166 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5167 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5168 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5169 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5170 int len;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5171 /* the server is known, it's not the one the client requested, or the
5172 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5173 * insert a set-cookie here, except if we want to insert only on POST
5174 * requests and this one isn't. Note that servers which don't have cookies
5175 * (eg: some backup servers) will return a full cookie removal request.
5176 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5177 if (!target_srv(&t->target)->cookie) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5178 len = sprintf(trash,
5179 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5180 t->be->cookie_name);
5181 }
5182 else {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5183 len = sprintf(trash, "Set-Cookie: %s=%s", t->be->cookie_name, target_srv(&t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5184
5185 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5186 /* emit last_date, which is mandatory */
5187 trash[len++] = COOKIE_DELIM_DATE;
5188 s30tob64((date.tv_sec+3) >> 2, trash + len); len += 5;
5189 if (t->be->cookie_maxlife) {
5190 /* emit first_date, which is either the original one or
5191 * the current date.
5192 */
5193 trash[len++] = COOKIE_DELIM_DATE;
5194 s30tob64(txn->cookie_first_date ?
5195 txn->cookie_first_date >> 2 :
5196 (date.tv_sec+3) >> 2, trash + len);
5197 len += 5;
5198 }
5199 }
5200 len += sprintf(trash + len, "; path=/");
5201 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5202
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5203 if (t->be->cookie_domain)
5204 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5205
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5206 if (t->be->ck_opts & PR_CK_HTTPONLY)
5207 len += sprintf(trash+len, "; HttpOnly");
5208
5209 if (t->be->ck_opts & PR_CK_SECURE)
5210 len += sprintf(trash+len, "; Secure");
5211
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5212 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash, len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5213 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5214
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5215 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5216 if (target_srv(&t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5217 /* the server did not change, only the date was updated */
5218 txn->flags |= TX_SCK_UPDATED;
5219 else
5220 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5221
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5222 /* Here, we will tell an eventual cache on the client side that we don't
5223 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5224 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5225 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5226 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5227 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5228
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5229 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5230
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5231 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5232 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5233 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5234 }
5235 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5236
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5237 /*
5238 * 7: check if result will be cacheable with a cookie.
5239 * We'll block the response if security checks have caught
5240 * nasty things such as a cacheable cookie.
5241 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5242 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5243 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5244 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5245
5246 /* we're in presence of a cacheable response containing
5247 * a set-cookie header. We'll block it as requested by
5248 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5249 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5250 if (target_srv(&t->target))
5251 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5252
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5253 t->be->be_counters.denied_resp++;
5254 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5255 if (t->listener->counters)
5256 t->listener->counters->denied_resp++;
5257
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5258 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5259 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5260 send_log(t->be, LOG_ALERT,
5261 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5262 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5263 goto return_srv_prx_502;
5264 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5265
5266 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5267 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5268 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5269 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5270 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE)) {
5271 unsigned int want_flags = 0;
5272
5273 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5274 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5275 /* we want a keep-alive response here. Keep-alive header
5276 * required if either side is not 1.1.
5277 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5278 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5279 want_flags |= TX_CON_KAL_SET;
5280 }
5281 else {
5282 /* we want a close response here. Close header required if
5283 * the server is 1.1, regardless of the client.
5284 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5285 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5286 want_flags |= TX_CON_CLO_SET;
5287 }
5288
5289 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5290 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5291 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5292
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5293 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5294 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5295 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5296 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5297
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5298 /*************************************************************
5299 * OK, that's finished for the headers. We have done what we *
5300 * could. Let's switch to the DATA state. *
5301 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5302
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5303 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5304
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5305 /* if the user wants to log as soon as possible, without counting
5306 * bytes from the server, then this is the right moment. We have
5307 * to temporarily assign bytes_out to log what we currently have.
5308 */
5309 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5310 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5311 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5312 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5313 t->logs.bytes_out = 0;
5314 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5315
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5316 /* Note: we must not try to cheat by jumping directly to DATA,
5317 * otherwise we would not let the client side wake up.
5318 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5319
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5320 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5321 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5322 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5323}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5324
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5325/* This function is an analyser which forwards response body (including chunk
5326 * sizes if any). It is called as soon as we must forward, even if we forward
5327 * zero byte. The only situation where it must not be called is when we're in
5328 * tunnel mode and we want to forward till the close. It's used both to forward
5329 * remaining data and to resync after end of body. It expects the msg_state to
5330 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5331 * 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]5332 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5333 * bytes of pending data + the headers if not already done (between sol and sov).
5334 * 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]5335 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5336int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5337{
5338 struct http_txn *txn = &s->txn;
5339 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5340 unsigned int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5341
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5342 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5343 return 0;
5344
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5345 if ((res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
5346 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf.o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5347 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5348 /* Output closed while we were sending data. We must abort and
5349 * wake the other side up.
5350 */
5351 msg->msg_state = HTTP_MSG_ERROR;
5352 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5353 return 1;
5354 }
5355
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5356 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5357 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5358
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5359 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5360 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]5361 * rep->buf.p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5362 * is still null. We must save the body in msg->next because it
5363 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5364 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]5365 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5366
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5367 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5368 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5369 else {
5370 msg->msg_state = HTTP_MSG_DATA;
5371 }
5372 }
5373
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5374 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5375 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5376 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5377 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5378 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5379 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5380 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5381 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5382 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5383 }
5384
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5385 if (msg->msg_state == HTTP_MSG_DATA) {
5386 /* must still forward */
5387 if (res->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5388 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5389
5390 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5391 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5392 msg->msg_state = HTTP_MSG_DATA_CRLF;
5393 else
5394 msg->msg_state = HTTP_MSG_DONE;
5395 }
5396 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5397 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5398 * set ->sov and ->next to point to the body and switch to DATA or
5399 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5400 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5401 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5402
5403 if (!ret)
5404 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5405 else if (ret < 0) {
5406 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5407 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]5408 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5409 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5410 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5411 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5412 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
5413 /* we want the CRLF after the data */
5414 int ret;
5415
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5416 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5417
5418 if (!ret)
5419 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5420 else if (ret < 0) {
5421 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5422 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_DATA_CRLF, s->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5423 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5424 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5425 /* we're in MSG_CHUNK_SIZE now */
5426 }
5427 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5428 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5429
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5430 if (ret == 0)
5431 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5432 else if (ret < 0) {
5433 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5434 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]5435 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5436 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5437 /* we're in HTTP_MSG_DONE now */
5438 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5439 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5440 int old_state = msg->msg_state;
5441
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5442 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5443 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5444 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5445 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5446 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5447 if (http_resync_states(s)) {
5448 http_silent_debug(__LINE__, s);
5449 /* some state changes occurred, maybe the analyser
5450 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5451 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5452 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5453 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5454 /* response errors are most likely due to
5455 * the client aborting the transfer.
5456 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5457 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5458 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5459 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5460 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5461 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5462 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5463 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5464 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5465 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5466 }
5467 }
5468
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5469 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5470 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5471 if (res->flags & CF_SHUTR) {
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5472 if (!(s->flags & SN_ERR_MASK))
5473 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5474 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5475 if (target_srv(&s->target))
5476 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5477 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5478 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5479
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5480 if (res->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5481 goto aborted_xfer;
5482
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5483 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5484 if (!s->req->analysers)
5485 goto return_bad_res;
5486
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5487 /* forward any data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5488 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5489 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5490 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5491 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5492 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5493 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5494 }
5495
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5496 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5497 * 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]5498 * Similarly, with keep-alive on the client side, we don't want to forward a
5499 * close.
5500 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5501 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5502 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5503 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5504 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5505
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5506 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5507 * 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]5508 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5509 * modes are already handled by the stream sock layer. We must not do
5510 * this in content-length mode because it could present the MSG_MORE
5511 * flag with the last block of forwarded data, which would cause an
5512 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5513 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5514 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5515 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5516
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5517 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5518 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5519 return 0;
5520
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5521 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5522 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5523 if (target_srv(&s->target))
5524 target_srv(&s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5525
5526 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5527 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5528 /* don't send any error message as we're in the body */
5529 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5530 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5531 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5532 if (target_srv(&s->target))
5533 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5534
5535 if (!(s->flags & SN_ERR_MASK))
5536 s->flags |= SN_ERR_PRXCOND;
5537 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5538 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5539 return 0;
5540
5541 aborted_xfer:
5542 txn->rsp.msg_state = HTTP_MSG_ERROR;
5543 /* don't send any error message as we're in the body */
5544 stream_int_retnclose(res->cons, NULL);
5545 res->analysers = 0;
5546 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5547
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5548 s->fe->fe_counters.cli_aborts++;
5549 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5550 if (target_srv(&s->target))
5551 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5552
5553 if (!(s->flags & SN_ERR_MASK))
5554 s->flags |= SN_ERR_CLICL;
5555 if (!(s->flags & SN_FINST_MASK))
5556 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5557 return 0;
5558}
5559
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5560/* Iterate the same filter through all request headers.
5561 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5562 * Since it can manage the switch to another backend, it updates the per-proxy
5563 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5564 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5565int 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]5566{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5567 char term;
5568 char *cur_ptr, *cur_end, *cur_next;
5569 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5570 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5571 struct hdr_idx_elem *cur_hdr;
5572 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5573
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5574 last_hdr = 0;
5575
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]5576 cur_next = req->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5577 old_idx = 0;
5578
5579 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5580 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5581 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5582 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5583 (exp->action == ACT_ALLOW ||
5584 exp->action == ACT_DENY ||
5585 exp->action == ACT_TARPIT))
5586 return 0;
5587
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5588 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5589 if (!cur_idx)
5590 break;
5591
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5592 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5593 cur_ptr = cur_next;
5594 cur_end = cur_ptr + cur_hdr->len;
5595 cur_next = cur_end + cur_hdr->cr + 1;
5596
5597 /* Now we have one header between cur_ptr and cur_end,
5598 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5599 */
5600
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5601 /* The annoying part is that pattern matching needs
5602 * that we modify the contents to null-terminate all
5603 * strings before testing them.
5604 */
5605
5606 term = *cur_end;
5607 *cur_end = '\0';
5608
5609 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5610 switch (exp->action) {
5611 case ACT_SETBE:
5612 /* It is not possible to jump a second time.
5613 * FIXME: should we return an HTTP/500 here so that
5614 * the admin knows there's a problem ?
5615 */
5616 if (t->be != t->fe)
5617 break;
5618
5619 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5620 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5621 last_hdr = 1;
5622 break;
5623
5624 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5625 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5626 last_hdr = 1;
5627 break;
5628
5629 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5630 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5631 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5632
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5633 t->fe->fe_counters.denied_req++;
5634 if (t->fe != t->be)
5635 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5636 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5637 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5638
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5639 break;
5640
5641 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5642 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5643 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5644
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5645 t->fe->fe_counters.denied_req++;
5646 if (t->fe != t->be)
5647 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5648 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5649 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5650
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5651 break;
5652
5653 case ACT_REPLACE:
5654 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5655 delta = buffer_replace2(&req->buf, cur_ptr, cur_end, trash, len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5656 /* FIXME: if the user adds a newline in the replacement, the
5657 * index will not be recalculated for now, and the new line
5658 * will not be counted as a new header.
5659 */
5660
5661 cur_end += delta;
5662 cur_next += delta;
5663 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5664 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5665 break;
5666
5667 case ACT_REMOVE:
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5668 delta = buffer_replace2(&req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5669 cur_next += delta;
5670
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5671 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5672 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5673 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5674 cur_hdr->len = 0;
5675 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5676 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5677 break;
5678
5679 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5680 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5681 if (cur_end)
5682 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5683
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5684 /* keep the link from this header to next one in case of later
5685 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5686 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5687 old_idx = cur_idx;
5688 }
5689 return 0;
5690}
5691
5692
5693/* Apply the filter to the request line.
5694 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5695 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5696 * Since it can manage the switch to another backend, it updates the per-proxy
5697 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5698 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5699int 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]5700{
5701 char term;
5702 char *cur_ptr, *cur_end;
5703 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5704 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5705 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5706
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5707
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5708 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5709 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5710 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5711 (exp->action == ACT_ALLOW ||
5712 exp->action == ACT_DENY ||
5713 exp->action == ACT_TARPIT))
5714 return 0;
5715 else if (exp->action == ACT_REMOVE)
5716 return 0;
5717
5718 done = 0;
5719
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]5720 cur_ptr = req->buf.p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5721 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5722
5723 /* Now we have the request line between cur_ptr and cur_end */
5724
5725 /* The annoying part is that pattern matching needs
5726 * that we modify the contents to null-terminate all
5727 * strings before testing them.
5728 */
5729
5730 term = *cur_end;
5731 *cur_end = '\0';
5732
5733 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5734 switch (exp->action) {
5735 case ACT_SETBE:
5736 /* It is not possible to jump a second time.
5737 * FIXME: should we return an HTTP/500 here so that
5738 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5739 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5740 if (t->be != t->fe)
5741 break;
5742
5743 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5744 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5745 done = 1;
5746 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5747
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5748 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5749 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5750 done = 1;
5751 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5752
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5753 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5754 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5755
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5756 t->fe->fe_counters.denied_req++;
5757 if (t->fe != t->be)
5758 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5759 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5760 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5761
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5762 done = 1;
5763 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5764
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5765 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5766 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5767
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5768 t->fe->fe_counters.denied_req++;
5769 if (t->fe != t->be)
5770 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5771 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5772 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5773
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5774 done = 1;
5775 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5776
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5777 case ACT_REPLACE:
5778 *cur_end = term; /* restore the string terminator */
5779 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5780 delta = buffer_replace2(&req->buf, cur_ptr, cur_end, trash, len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5781 /* FIXME: if the user adds a newline in the replacement, the
5782 * index will not be recalculated for now, and the new line
5783 * will not be counted as a new header.
5784 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5785
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5786 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5787 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]5788 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5789 HTTP_MSG_RQMETH,
5790 cur_ptr, cur_end + 1,
5791 NULL, NULL);
5792 if (unlikely(!cur_end))
5793 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5794
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5795 /* we have a full request and we know that we have either a CR
5796 * or an LF at <ptr>.
5797 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5798 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
5799 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]5800 /* there is no point trying this regex on headers */
5801 return 1;
5802 }
5803 }
5804 *cur_end = term; /* restore the string terminator */
5805 return done;
5806}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]5807
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5808
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5809
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5810/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5811 * 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]5812 * 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]5813 * unparsable request. Since it can manage the switch to another backend, it
5814 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5815 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5816int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5817{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5818 struct http_txn *txn = &s->txn;
5819 struct hdr_exp *exp;
5820
5821 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5822 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5823
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5824 /*
5825 * The interleaving of transformations and verdicts
5826 * makes it difficult to decide to continue or stop
5827 * the evaluation.
5828 */
5829
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5830 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
5831 break;
5832
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5833 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5834 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5835 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5836 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5837
5838 /* if this filter had a condition, evaluate it now and skip to
5839 * next filter if the condition does not match.
5840 */
5841 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5842 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]5843 ret = acl_pass(ret);
5844 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
5845 ret = !ret;
5846
5847 if (!ret)
5848 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5849 }
5850
5851 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5852 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5853 if (unlikely(ret < 0))
5854 return -1;
5855
5856 if (likely(ret == 0)) {
5857 /* The filter did not match the request, it can be
5858 * iterated through all headers.
5859 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5860 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5861 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5862 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5863 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5864}
5865
5866
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5867
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5868/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5869 * Try to retrieve the server associated to the appsession.
5870 * If the server is found, it's assigned to the session.
5871 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5872void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5873 struct http_txn *txn = &t->txn;
5874 appsess *asession = NULL;
5875 char *sessid_temp = NULL;
5876
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5877 if (len > t->be->appsession_len) {
5878 len = t->be->appsession_len;
5879 }
5880
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5881 if (t->be->options2 & PR_O2_AS_REQL) {
5882 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5883 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5884 /* 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]5885 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5886 }
5887
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5888 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5889 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5890 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5891 return;
5892 }
5893
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5894 memcpy(txn->sessid, buf, len);
5895 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5896 }
5897
5898 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
5899 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5900 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5901 return;
5902 }
5903
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5904 memcpy(sessid_temp, buf, len);
5905 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5906
5907 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
5908 /* free previously allocated memory */
5909 pool_free2(apools.sessid, sessid_temp);
5910
5911 if (asession != NULL) {
5912 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
5913 if (!(t->be->options2 & PR_O2_AS_REQL))
5914 asession->request_count++;
5915
5916 if (asession->serverid != NULL) {
5917 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5918
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5919 while (srv) {
5920 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]5921 if ((srv->state & SRV_RUNNING) ||
5922 (t->be->options & PR_O_PERSIST) ||
5923 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5924 /* we found the server and it's usable */
5925 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]5926 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5927 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]5928 set_target_server(&t->target, srv);
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]5929
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5930 break;
5931 } else {
5932 txn->flags &= ~TX_CK_MASK;
5933 txn->flags |= TX_CK_DOWN;
5934 }
5935 }
5936 srv = srv->next;
5937 }
5938 }
5939 }
5940}
5941
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5942/* Find the end of a cookie value contained between <s> and <e>. It works the
5943 * same way as with headers above except that the semi-colon also ends a token.
5944 * See RFC2965 for more information. Note that it requires a valid header to
5945 * return a valid result.
5946 */
5947char *find_cookie_value_end(char *s, const char *e)
5948{
5949 int quoted, qdpair;
5950
5951 quoted = qdpair = 0;
5952 for (; s < e; s++) {
5953 if (qdpair) qdpair = 0;
5954 else if (quoted) {
5955 if (*s == '\\') qdpair = 1;
5956 else if (*s == '"') quoted = 0;
5957 }
5958 else if (*s == '"') quoted = 1;
5959 else if (*s == ',' || *s == ';') return s;
5960 }
5961 return s;
5962}
5963
5964/* Delete a value in a header between delimiters <from> and <next> in buffer
5965 * <buf>. The number of characters displaced is returned, and the pointer to
5966 * the first delimiter is updated if required. The function tries as much as
5967 * possible to respect the following principles :
5968 * - replace <from> delimiter by the <next> one unless <from> points to a
5969 * colon, in which case <next> is simply removed
5970 * - set exactly one space character after the new first delimiter, unless
5971 * there are not enough characters in the block being moved to do so.
5972 * - remove unneeded spaces before the previous delimiter and after the new
5973 * one.
5974 *
5975 * It is the caller's responsibility to ensure that :
5976 * - <from> points to a valid delimiter or the colon ;
5977 * - <next> points to a valid delimiter or the final CR/LF ;
5978 * - there are non-space chars before <from> ;
5979 * - there is a CR/LF at or after <next>.
5980 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5981int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5982{
5983 char *prev = *from;
5984
5985 if (*prev == ':') {
5986 /* We're removing the first value, preserve the colon and add a
5987 * space if possible.
5988 */
5989 if (!http_is_crlf[(unsigned char)*next])
5990 next++;
5991 prev++;
5992 if (prev < next)
5993 *prev++ = ' ';
5994
5995 while (http_is_spht[(unsigned char)*next])
5996 next++;
5997 } else {
5998 /* Remove useless spaces before the old delimiter. */
5999 while (http_is_spht[(unsigned char)*(prev-1)])
6000 prev--;
6001 *from = prev;
6002
6003 /* copy the delimiter and if possible a space if we're
6004 * not at the end of the line.
6005 */
6006 if (!http_is_crlf[(unsigned char)*next]) {
6007 *prev++ = *next++;
6008 if (prev + 1 < next)
6009 *prev++ = ' ';
6010 while (http_is_spht[(unsigned char)*next])
6011 next++;
6012 }
6013 }
6014 return buffer_replace2(buf, prev, next, NULL, 0);
6015}
6016
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6017/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6018 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6019 * desirable to call it only when needed. This code is quite complex because
6020 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6021 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6022 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6023void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6024{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6025 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6026 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6027 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6028 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6029 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6030
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6031 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6032 old_idx = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6033 hdr_next = req->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6034
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6035 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6036 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6037 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6038
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6039 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6040 hdr_beg = hdr_next;
6041 hdr_end = hdr_beg + cur_hdr->len;
6042 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6043
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6044 /* We have one full header between hdr_beg and hdr_end, and the
6045 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6046 * "Cookie:" headers.
6047 */
6048
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6049 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6050 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6051 old_idx = cur_idx;
6052 continue;
6053 }
6054
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6055 del_from = NULL; /* nothing to be deleted */
6056 preserve_hdr = 0; /* assume we may kill the whole header */
6057
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6058 /* Now look for cookies. Conforming to RFC2109, we have to support
6059 * attributes whose name begin with a '$', and associate them with
6060 * the right cookie, if we want to delete this cookie.
6061 * So there are 3 cases for each cookie read :
6062 * 1) it's a special attribute, beginning with a '$' : ignore it.
6063 * 2) it's a server id cookie that we *MAY* want to delete : save
6064 * some pointers on it (last semi-colon, beginning of cookie...)
6065 * 3) it's an application cookie : we *MAY* have to delete a previous
6066 * "special" cookie.
6067 * At the end of loop, if a "special" cookie remains, we may have to
6068 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6069 * *MUST* delete it.
6070 *
6071 * Note: RFC2965 is unclear about the processing of spaces around
6072 * the equal sign in the ATTR=VALUE form. A careful inspection of
6073 * the RFC explicitly allows spaces before it, and not within the
6074 * tokens (attrs or values). An inspection of RFC2109 allows that
6075 * too but section 10.1.3 lets one think that spaces may be allowed
6076 * after the equal sign too, resulting in some (rare) buggy
6077 * implementations trying to do that. So let's do what servers do.
6078 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6079 * allowed quoted strings in values, with any possible character
6080 * after a backslash, including control chars and delimitors, which
6081 * causes parsing to become ambiguous. Browsers also allow spaces
6082 * within values even without quotes.
6083 *
6084 * We have to keep multiple pointers in order to support cookie
6085 * removal at the beginning, middle or end of header without
6086 * corrupting the header. All of these headers are valid :
6087 *
6088 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6089 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6090 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6091 * | | | | | | | | |
6092 * | | | | | | | | hdr_end <--+
6093 * | | | | | | | +--> next
6094 * | | | | | | +----> val_end
6095 * | | | | | +-----------> val_beg
6096 * | | | | +--------------> equal
6097 * | | | +----------------> att_end
6098 * | | +---------------------> att_beg
6099 * | +--------------------------> prev
6100 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6101 */
6102
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6103 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6104 /* Iterate through all cookies on this line */
6105
6106 /* find att_beg */
6107 att_beg = prev + 1;
6108 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6109 att_beg++;
6110
6111 /* find att_end : this is the first character after the last non
6112 * space before the equal. It may be equal to hdr_end.
6113 */
6114 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6115
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6116 while (equal < hdr_end) {
6117 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6118 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6119 if (http_is_spht[(unsigned char)*equal++])
6120 continue;
6121 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6122 }
6123
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6124 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6125 * is between <att_beg> and <equal>, both may be identical.
6126 */
6127
6128 /* look for end of cookie if there is an equal sign */
6129 if (equal < hdr_end && *equal == '=') {
6130 /* look for the beginning of the value */
6131 val_beg = equal + 1;
6132 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6133 val_beg++;
6134
6135 /* find the end of the value, respecting quotes */
6136 next = find_cookie_value_end(val_beg, hdr_end);
6137
6138 /* make val_end point to the first white space or delimitor after the value */
6139 val_end = next;
6140 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6141 val_end--;
6142 } else {
6143 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6144 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6145
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6146 /* We have nothing to do with attributes beginning with '$'. However,
6147 * they will automatically be removed if a header before them is removed,
6148 * since they're supposed to be linked together.
6149 */
6150 if (*att_beg == '$')
6151 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6152
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6153 /* Ignore cookies with no equal sign */
6154 if (equal == next) {
6155 /* This is not our cookie, so we must preserve it. But if we already
6156 * scheduled another cookie for removal, we cannot remove the
6157 * complete header, but we can remove the previous block itself.
6158 */
6159 preserve_hdr = 1;
6160 if (del_from != NULL) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6161 int delta = del_hdr_value(&req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6162 val_end += delta;
6163 next += delta;
6164 hdr_end += delta;
6165 hdr_next += delta;
6166 cur_hdr->len += delta;
6167 http_msg_move_end(&txn->req, delta);
6168 prev = del_from;
6169 del_from = NULL;
6170 }
6171 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6172 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6173
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6174 /* if there are spaces around the equal sign, we need to
6175 * strip them otherwise we'll get trouble for cookie captures,
6176 * or even for rewrites. Since this happens extremely rarely,
6177 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6178 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6179 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6180 int stripped_before = 0;
6181 int stripped_after = 0;
6182
6183 if (att_end != equal) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6184 stripped_before = buffer_replace2(&req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6185 equal += stripped_before;
6186 val_beg += stripped_before;
6187 }
6188
6189 if (val_beg > equal + 1) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6190 stripped_after = buffer_replace2(&req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6191 val_beg += stripped_after;
6192 stripped_before += stripped_after;
6193 }
6194
6195 val_end += stripped_before;
6196 next += stripped_before;
6197 hdr_end += stripped_before;
6198 hdr_next += stripped_before;
6199 cur_hdr->len += stripped_before;
6200 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6201 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6202 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6203
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6204 /* First, let's see if we want to capture this cookie. We check
6205 * that we don't already have a client side cookie, because we
6206 * can only capture one. Also as an optimisation, we ignore
6207 * cookies shorter than the declared name.
6208 */
6209 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6210 (val_end - att_beg >= t->fe->capture_namelen) &&
6211 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6212 int log_len = val_end - att_beg;
6213
6214 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6215 Alert("HTTP logging : out of memory.\n");
6216 } else {
6217 if (log_len > t->fe->capture_len)
6218 log_len = t->fe->capture_len;
6219 memcpy(txn->cli_cookie, att_beg, log_len);
6220 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6221 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6222 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6223
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6224 /* Persistence cookies in passive, rewrite or insert mode have the
6225 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6226 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6227 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6228 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6229 * For cookies in prefix mode, the form is :
6230 *
6231 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6232 */
6233 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6234 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6235 struct server *srv = t->be->srv;
6236 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6237
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6238 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6239 * have the server ID between val_beg and delim, and the original cookie between
6240 * delim+1 and val_end. Otherwise, delim==val_end :
6241 *
6242 * Cookie: NAME=SRV; # in all but prefix modes
6243 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6244 * | || || | |+-> next
6245 * | || || | +--> val_end
6246 * | || || +---------> delim
6247 * | || |+------------> val_beg
6248 * | || +-------------> att_end = equal
6249 * | |+-----------------> att_beg
6250 * | +------------------> prev
6251 * +-------------------------> hdr_beg
6252 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6253
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6254 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6255 for (delim = val_beg; delim < val_end; delim++)
6256 if (*delim == COOKIE_DELIM)
6257 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6258 } else {
6259 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6260 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6261 /* Now check if the cookie contains a date field, which would
6262 * appear after a vertical bar ('|') just after the server name
6263 * and before the delimiter.
6264 */
6265 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6266 if (vbar1) {
6267 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6268 * right is the last seen date. It is a base64 encoded
6269 * 30-bit value representing the UNIX date since the
6270 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6271 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6272 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6273 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6274 if (val_end - vbar1 >= 5) {
6275 val = b64tos30(vbar1);
6276 if (val > 0)
6277 txn->cookie_last_date = val << 2;
6278 }
6279 /* look for a second vertical bar */
6280 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6281 if (vbar1 && (val_end - vbar1 > 5)) {
6282 val = b64tos30(vbar1 + 1);
6283 if (val > 0)
6284 txn->cookie_first_date = val << 2;
6285 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6286 }
6287 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6288
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6289 /* if the cookie has an expiration date and the proxy wants to check
6290 * it, then we do that now. We first check if the cookie is too old,
6291 * then only if it has expired. We detect strict overflow because the
6292 * time resolution here is not great (4 seconds). Cookies with dates
6293 * in the future are ignored if their offset is beyond one day. This
6294 * allows an admin to fix timezone issues without expiring everyone
6295 * and at the same time avoids keeping unwanted side effects for too
6296 * long.
6297 */
6298 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6299 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6300 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6301 txn->flags &= ~TX_CK_MASK;
6302 txn->flags |= TX_CK_OLD;
6303 delim = val_beg; // let's pretend we have not found the cookie
6304 txn->cookie_first_date = 0;
6305 txn->cookie_last_date = 0;
6306 }
6307 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6308 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6309 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6310 txn->flags &= ~TX_CK_MASK;
6311 txn->flags |= TX_CK_EXPIRED;
6312 delim = val_beg; // let's pretend we have not found the cookie
6313 txn->cookie_first_date = 0;
6314 txn->cookie_last_date = 0;
6315 }
6316
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6317 /* Here, we'll look for the first running server which supports the cookie.
6318 * This allows to share a same cookie between several servers, for example
6319 * to dedicate backup servers to specific servers only.
6320 * However, to prevent clients from sticking to cookie-less backup server
6321 * when they have incidentely learned an empty cookie, we simply ignore
6322 * empty cookies and mark them as invalid.
6323 * The same behaviour is applied when persistence must be ignored.
6324 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6325 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6326 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6327
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6328 while (srv) {
6329 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6330 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6331 if ((srv->state & SRV_RUNNING) ||
6332 (t->be->options & PR_O_PERSIST) ||
6333 (t->flags & SN_FORCE_PRST)) {
6334 /* we found the server and we can use it */
6335 txn->flags &= ~TX_CK_MASK;
6336 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6337 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]6338 set_target_server(&t->target, srv);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6339 break;
6340 } else {
6341 /* we found a server, but it's down,
6342 * mark it as such and go on in case
6343 * another one is available.
6344 */
6345 txn->flags &= ~TX_CK_MASK;
6346 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6347 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6348 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6349 srv = srv->next;
6350 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6351
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6352 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6353 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6354 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6355 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6356 txn->flags |= TX_CK_UNUSED;
6357 else
6358 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6359 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6360
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6361 /* depending on the cookie mode, we may have to either :
6362 * - delete the complete cookie if we're in insert+indirect mode, so that
6363 * the server never sees it ;
6364 * - remove the server id from the cookie value, and tag the cookie as an
6365 * application cookie so that it does not get accidentely removed later,
6366 * if we're in cookie prefix mode
6367 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6368 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6369 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6370
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6371 delta = buffer_replace2(&req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6372 val_end += delta;
6373 next += delta;
6374 hdr_end += delta;
6375 hdr_next += delta;
6376 cur_hdr->len += delta;
6377 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6378
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6379 del_from = NULL;
6380 preserve_hdr = 1; /* we want to keep this cookie */
6381 }
6382 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6383 (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]6384 del_from = prev;
6385 }
6386 } else {
6387 /* This is not our cookie, so we must preserve it. But if we already
6388 * scheduled another cookie for removal, we cannot remove the
6389 * complete header, but we can remove the previous block itself.
6390 */
6391 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6392
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6393 if (del_from != NULL) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6394 int delta = del_hdr_value(&req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6395 if (att_beg >= del_from)
6396 att_beg += delta;
6397 if (att_end >= del_from)
6398 att_end += delta;
6399 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6400 val_end += delta;
6401 next += delta;
6402 hdr_end += delta;
6403 hdr_next += delta;
6404 cur_hdr->len += delta;
6405 http_msg_move_end(&txn->req, delta);
6406 prev = del_from;
6407 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6408 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6409 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6410
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6411 /* Look for the appsession cookie unless persistence must be ignored */
6412 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6413 int cmp_len, value_len;
6414 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6415
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6416 if (t->be->options2 & PR_O2_AS_PFX) {
6417 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6418 value_begin = att_beg + t->be->appsession_name_len;
6419 value_len = val_end - att_beg - t->be->appsession_name_len;
6420 } else {
6421 cmp_len = att_end - att_beg;
6422 value_begin = val_beg;
6423 value_len = val_end - val_beg;
6424 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6425
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6426 /* let's see if the cookie is our appcookie */
6427 if (cmp_len == t->be->appsession_name_len &&
6428 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6429 manage_client_side_appsession(t, value_begin, value_len);
6430 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6431 }
6432
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6433 /* continue with next cookie on this header line */
6434 att_beg = next;
6435 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6436
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6437 /* There are no more cookies on this line.
6438 * We may still have one (or several) marked for deletion at the
6439 * end of the line. We must do this now in two ways :
6440 * - if some cookies must be preserved, we only delete from the
6441 * mark to the end of line ;
6442 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6443 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6444 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6445 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6446 if (preserve_hdr) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6447 delta = del_hdr_value(&req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6448 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6449 cur_hdr->len += delta;
6450 } else {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6451 delta = buffer_replace2(&req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6452
6453 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6454 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6455 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6456 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6457 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6458 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6459 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6460 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6461 }
6462
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6463 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6464 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6465 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6466}
6467
6468
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6469/* Iterate the same filter through all response headers contained in <rtr>.
6470 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6471 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6472int 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]6473{
6474 char term;
6475 char *cur_ptr, *cur_end, *cur_next;
6476 int cur_idx, old_idx, last_hdr;
6477 struct http_txn *txn = &t->txn;
6478 struct hdr_idx_elem *cur_hdr;
6479 int len, delta;
6480
6481 last_hdr = 0;
6482
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6483 cur_next = rtr->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6484 old_idx = 0;
6485
6486 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6487 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6488 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6489 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6490 (exp->action == ACT_ALLOW ||
6491 exp->action == ACT_DENY))
6492 return 0;
6493
6494 cur_idx = txn->hdr_idx.v[old_idx].next;
6495 if (!cur_idx)
6496 break;
6497
6498 cur_hdr = &txn->hdr_idx.v[cur_idx];
6499 cur_ptr = cur_next;
6500 cur_end = cur_ptr + cur_hdr->len;
6501 cur_next = cur_end + cur_hdr->cr + 1;
6502
6503 /* Now we have one header between cur_ptr and cur_end,
6504 * and the next header starts at cur_next.
6505 */
6506
6507 /* The annoying part is that pattern matching needs
6508 * that we modify the contents to null-terminate all
6509 * strings before testing them.
6510 */
6511
6512 term = *cur_end;
6513 *cur_end = '\0';
6514
6515 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6516 switch (exp->action) {
6517 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6518 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6519 last_hdr = 1;
6520 break;
6521
6522 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6523 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6524 last_hdr = 1;
6525 break;
6526
6527 case ACT_REPLACE:
6528 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6529 delta = buffer_replace2(&rtr->buf, cur_ptr, cur_end, trash, len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6530 /* FIXME: if the user adds a newline in the replacement, the
6531 * index will not be recalculated for now, and the new line
6532 * will not be counted as a new header.
6533 */
6534
6535 cur_end += delta;
6536 cur_next += delta;
6537 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6538 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6539 break;
6540
6541 case ACT_REMOVE:
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6542 delta = buffer_replace2(&rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6543 cur_next += delta;
6544
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6545 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6546 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6547 txn->hdr_idx.used--;
6548 cur_hdr->len = 0;
6549 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6550 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6551 break;
6552
6553 }
6554 }
6555 if (cur_end)
6556 *cur_end = term; /* restore the string terminator */
6557
6558 /* keep the link from this header to next one in case of later
6559 * removal of next header.
6560 */
6561 old_idx = cur_idx;
6562 }
6563 return 0;
6564}
6565
6566
6567/* Apply the filter to the status line in the response buffer <rtr>.
6568 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6569 * or -1 if a replacement resulted in an invalid status line.
6570 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6571int 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]6572{
6573 char term;
6574 char *cur_ptr, *cur_end;
6575 int done;
6576 struct http_txn *txn = &t->txn;
6577 int len, delta;
6578
6579
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6580 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6581 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6582 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6583 (exp->action == ACT_ALLOW ||
6584 exp->action == ACT_DENY))
6585 return 0;
6586 else if (exp->action == ACT_REMOVE)
6587 return 0;
6588
6589 done = 0;
6590
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6591 cur_ptr = rtr->buf.p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6592 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6593
6594 /* Now we have the status line between cur_ptr and cur_end */
6595
6596 /* The annoying part is that pattern matching needs
6597 * that we modify the contents to null-terminate all
6598 * strings before testing them.
6599 */
6600
6601 term = *cur_end;
6602 *cur_end = '\0';
6603
6604 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6605 switch (exp->action) {
6606 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6607 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6608 done = 1;
6609 break;
6610
6611 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6612 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6613 done = 1;
6614 break;
6615
6616 case ACT_REPLACE:
6617 *cur_end = term; /* restore the string terminator */
6618 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6619 delta = buffer_replace2(&rtr->buf, cur_ptr, cur_end, trash, len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6620 /* FIXME: if the user adds a newline in the replacement, the
6621 * index will not be recalculated for now, and the new line
6622 * will not be counted as a new header.
6623 */
6624
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6625 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6626 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6627 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6628 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6629 cur_ptr, cur_end + 1,
6630 NULL, NULL);
6631 if (unlikely(!cur_end))
6632 return -1;
6633
6634 /* we have a full respnse and we know that we have either a CR
6635 * or an LF at <ptr>.
6636 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6637 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]6638 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]6639 /* there is no point trying this regex on headers */
6640 return 1;
6641 }
6642 }
6643 *cur_end = term; /* restore the string terminator */
6644 return done;
6645}
6646
6647
6648
6649/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6650 * 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]6651 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6652 * unparsable response.
6653 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6654int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6655{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6656 struct http_txn *txn = &s->txn;
6657 struct hdr_exp *exp;
6658
6659 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6660 int ret;
6661
6662 /*
6663 * The interleaving of transformations and verdicts
6664 * makes it difficult to decide to continue or stop
6665 * the evaluation.
6666 */
6667
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6668 if (txn->flags & TX_SVDENY)
6669 break;
6670
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6671 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6672 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6673 exp->action == ACT_PASS)) {
6674 exp = exp->next;
6675 continue;
6676 }
6677
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6678 /* if this filter had a condition, evaluate it now and skip to
6679 * next filter if the condition does not match.
6680 */
6681 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6682 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]6683 ret = acl_pass(ret);
6684 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6685 ret = !ret;
6686 if (!ret)
6687 continue;
6688 }
6689
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6690 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6691 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6692 if (unlikely(ret < 0))
6693 return -1;
6694
6695 if (likely(ret == 0)) {
6696 /* The filter did not match the response, it can be
6697 * iterated through all headers.
6698 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6699 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6700 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6701 }
6702 return 0;
6703}
6704
6705
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6706/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6707 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6708 * desirable to call it only when needed. This function is also used when we
6709 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6710 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6711void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6712{
6713 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6714 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6715 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6716 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6717 char *hdr_beg, *hdr_end, *hdr_next;
6718 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6719
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6720 /* Iterate through the headers.
6721 * we start with the start line.
6722 */
6723 old_idx = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6724 hdr_next = res->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6725
6726 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6727 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6728 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6729
6730 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6731 hdr_beg = hdr_next;
6732 hdr_end = hdr_beg + cur_hdr->len;
6733 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6734
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6735 /* We have one full header between hdr_beg and hdr_end, and the
6736 * next header starts at hdr_next. We're only interested in
6737 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6738 */
6739
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6740 is_cookie2 = 0;
6741 prev = hdr_beg + 10;
6742 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6743 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6744 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6745 if (!val) {
6746 old_idx = cur_idx;
6747 continue;
6748 }
6749 is_cookie2 = 1;
6750 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6751 }
6752
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6753 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
6754 * <prev> points to the colon.
6755 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6756 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6757
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6758 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
6759 * check-cache is enabled) and we are not interested in checking
6760 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6761 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]6762 if (t->be->cookie_name == NULL &&
6763 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6764 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6765 return;
6766
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6767 /* OK so now we know we have to process this response cookie.
6768 * The format of the Set-Cookie header is slightly different
6769 * from the format of the Cookie header in that it does not
6770 * support the comma as a cookie delimiter (thus the header
6771 * cannot be folded) because the Expires attribute described in
6772 * the original Netscape's spec may contain an unquoted date
6773 * with a comma inside. We have to live with this because
6774 * many browsers don't support Max-Age and some browsers don't
6775 * support quoted strings. However the Set-Cookie2 header is
6776 * clean.
6777 *
6778 * We have to keep multiple pointers in order to support cookie
6779 * removal at the beginning, middle or end of header without
6780 * corrupting the header (in case of set-cookie2). A special
6781 * pointer, <scav> points to the beginning of the set-cookie-av
6782 * fields after the first semi-colon. The <next> pointer points
6783 * either to the end of line (set-cookie) or next unquoted comma
6784 * (set-cookie2). All of these headers are valid :
6785 *
6786 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
6787 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6788 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6789 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
6790 * | | | | | | | | | |
6791 * | | | | | | | | +-> next hdr_end <--+
6792 * | | | | | | | +------------> scav
6793 * | | | | | | +--------------> val_end
6794 * | | | | | +--------------------> val_beg
6795 * | | | | +----------------------> equal
6796 * | | | +------------------------> att_end
6797 * | | +----------------------------> att_beg
6798 * | +------------------------------> prev
6799 * +-----------------------------------------> hdr_beg
6800 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6801
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6802 for (; prev < hdr_end; prev = next) {
6803 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6804
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6805 /* find att_beg */
6806 att_beg = prev + 1;
6807 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6808 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6809
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6810 /* find att_end : this is the first character after the last non
6811 * space before the equal. It may be equal to hdr_end.
6812 */
6813 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6814
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6815 while (equal < hdr_end) {
6816 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
6817 break;
6818 if (http_is_spht[(unsigned char)*equal++])
6819 continue;
6820 att_end = equal;
6821 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6822
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6823 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6824 * is between <att_beg> and <equal>, both may be identical.
6825 */
6826
6827 /* look for end of cookie if there is an equal sign */
6828 if (equal < hdr_end && *equal == '=') {
6829 /* look for the beginning of the value */
6830 val_beg = equal + 1;
6831 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6832 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6833
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6834 /* find the end of the value, respecting quotes */
6835 next = find_cookie_value_end(val_beg, hdr_end);
6836
6837 /* make val_end point to the first white space or delimitor after the value */
6838 val_end = next;
6839 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6840 val_end--;
6841 } else {
6842 /* <equal> points to next comma, semi-colon or EOL */
6843 val_beg = val_end = next = equal;
6844 }
6845
6846 if (next < hdr_end) {
6847 /* Set-Cookie2 supports multiple cookies, and <next> points to
6848 * a colon or semi-colon before the end. So skip all attr-value
6849 * pairs and look for the next comma. For Set-Cookie, since
6850 * commas are permitted in values, skip to the end.
6851 */
6852 if (is_cookie2)
6853 next = find_hdr_value_end(next, hdr_end);
6854 else
6855 next = hdr_end;
6856 }
6857
6858 /* Now everything is as on the diagram above */
6859
6860 /* Ignore cookies with no equal sign */
6861 if (equal == val_end)
6862 continue;
6863
6864 /* If there are spaces around the equal sign, we need to
6865 * strip them otherwise we'll get trouble for cookie captures,
6866 * or even for rewrites. Since this happens extremely rarely,
6867 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6868 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6869 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6870 int stripped_before = 0;
6871 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6872
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6873 if (att_end != equal) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6874 stripped_before = buffer_replace2(&res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6875 equal += stripped_before;
6876 val_beg += stripped_before;
6877 }
6878
6879 if (val_beg > equal + 1) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6880 stripped_after = buffer_replace2(&res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6881 val_beg += stripped_after;
6882 stripped_before += stripped_after;
6883 }
6884
6885 val_end += stripped_before;
6886 next += stripped_before;
6887 hdr_end += stripped_before;
6888 hdr_next += stripped_before;
6889 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]6890 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6891 }
6892
6893 /* First, let's see if we want to capture this cookie. We check
6894 * that we don't already have a server side cookie, because we
6895 * can only capture one. Also as an optimisation, we ignore
6896 * cookies shorter than the declared name.
6897 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6898 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]6899 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6900 (val_end - att_beg >= t->fe->capture_namelen) &&
6901 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6902 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]6903 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6904 Alert("HTTP logging : out of memory.\n");
6905 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]6906 else {
6907 if (log_len > t->fe->capture_len)
6908 log_len = t->fe->capture_len;
6909 memcpy(txn->srv_cookie, att_beg, log_len);
6910 txn->srv_cookie[log_len] = 0;
6911 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6912 }
6913
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6914 srv = target_srv(&t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6915 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6916 if (!(t->flags & SN_IGNORE_PRST) &&
6917 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6918 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6919 /* assume passive cookie by default */
6920 txn->flags &= ~TX_SCK_MASK;
6921 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6922
6923 /* If the cookie is in insert mode on a known server, we'll delete
6924 * this occurrence because we'll insert another one later.
6925 * 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]6926 * a direct access.
6927 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6928 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]6929 /* The "preserve" flag was set, we don't want to touch the
6930 * server's cookie.
6931 */
6932 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6933 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
6934 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6935 /* this cookie must be deleted */
6936 if (*prev == ':' && next == hdr_end) {
6937 /* whole header */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6938 delta = buffer_replace2(&res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6939 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6940 txn->hdr_idx.used--;
6941 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6942 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6943 hdr_next += delta;
6944 http_msg_move_end(&txn->rsp, delta);
6945 /* note: while both invalid now, <next> and <hdr_end>
6946 * are still equal, so the for() will stop as expected.
6947 */
6948 } else {
6949 /* just remove the value */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6950 int delta = del_hdr_value(&res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6951 next = prev;
6952 hdr_end += delta;
6953 hdr_next += delta;
6954 cur_hdr->len += delta;
6955 http_msg_move_end(&txn->rsp, delta);
6956 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6957 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6958 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6959 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6960 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6961 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6962 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6963 * with this server since we know it.
6964 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6965 delta = buffer_replace2(&res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6966 next += delta;
6967 hdr_end += delta;
6968 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6969 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6970 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6971
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6972 txn->flags &= ~TX_SCK_MASK;
6973 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6974 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]6975 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6976 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6977 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6978 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6979 delta = buffer_replace2(&res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6980 next += delta;
6981 hdr_end += delta;
6982 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6983 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6984 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6985
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6986 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6987 txn->flags &= ~TX_SCK_MASK;
6988 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6989 }
6990 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6991 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
6992 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6993 int cmp_len, value_len;
6994 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6995
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6996 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6997 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6998 value_begin = att_beg + t->be->appsession_name_len;
6999 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]7000 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7001 cmp_len = att_end - att_beg;
7002 value_begin = val_beg;
7003 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7004 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7005
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7006 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7007 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7008 /* free a possibly previously allocated memory */
7009 pool_free2(apools.sessid, txn->sessid);
7010
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7011 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7012 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7013 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7014 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7015 return;
7016 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7017 memcpy(txn->sessid, value_begin, value_len);
7018 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7019 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7020 }
7021 /* that's done for this cookie, check the next one on the same
7022 * line when next != hdr_end (only if is_cookie2).
7023 */
7024 }
7025 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7026 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7027 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7028
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7029 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7030 appsess *asession = NULL;
7031 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7032 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7033 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7034 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7035 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7036 Alert("Not enough Memory process_srv():asession:calloc().\n");
7037 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7038 return;
7039 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7040 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7041
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7042 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7043 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7044 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]7045 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7046 return;
7047 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7048 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7049 asession->sessid[t->be->appsession_len] = 0;
7050
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7051 server_id_len = strlen(target_srv(&t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7052 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7053 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7054 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]7055 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7056 return;
7057 }
7058 asession->serverid[0] = '\0';
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7059 memcpy(asession->serverid, target_srv(&t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7060
7061 asession->request_count = 0;
7062 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7063 }
7064
7065 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7066 asession->request_count++;
7067 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7068}
7069
7070
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7071/*
7072 * Check if response is cacheable or not. Updates t->flags.
7073 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7074void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7075{
7076 struct http_txn *txn = &t->txn;
7077 char *p1, *p2;
7078
7079 char *cur_ptr, *cur_end, *cur_next;
7080 int cur_idx;
7081
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7082 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7083 return;
7084
7085 /* Iterate through the headers.
7086 * we start with the start line.
7087 */
7088 cur_idx = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7089 cur_next = rtr->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7090
7091 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7092 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7093 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7094
7095 cur_hdr = &txn->hdr_idx.v[cur_idx];
7096 cur_ptr = cur_next;
7097 cur_end = cur_ptr + cur_hdr->len;
7098 cur_next = cur_end + cur_hdr->cr + 1;
7099
7100 /* We have one full header between cur_ptr and cur_end, and the
7101 * next header starts at cur_next. We're only interested in
7102 * "Cookie:" headers.
7103 */
7104
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7105 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7106 if (val) {
7107 if ((cur_end - (cur_ptr + val) >= 8) &&
7108 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7109 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7110 return;
7111 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7112 }
7113
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7114 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7115 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7116 continue;
7117
7118 /* OK, right now we know we have a cache-control header at cur_ptr */
7119
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7120 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7121
7122 if (p1 >= cur_end) /* no more info */
7123 continue;
7124
7125 /* p1 is at the beginning of the value */
7126 p2 = p1;
7127
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7128 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7129 p2++;
7130
7131 /* we have a complete value between p1 and p2 */
7132 if (p2 < cur_end && *p2 == '=') {
7133 /* we have something of the form no-cache="set-cookie" */
7134 if ((cur_end - p1 >= 21) &&
7135 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7136 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7137 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7138 continue;
7139 }
7140
7141 /* OK, so we know that either p2 points to the end of string or to a comma */
7142 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7143 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7144 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7145 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7146 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7147 return;
7148 }
7149
7150 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7151 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7152 continue;
7153 }
7154 }
7155}
7156
7157
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7158/*
7159 * Try to retrieve a known appsession in the URI, then the associated server.
7160 * If the server is found, it's assigned to the session.
7161 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7162void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7163{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7164 char *end_params, *first_param, *cur_param, *next_param;
7165 char separator;
7166 int value_len;
7167
7168 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7169
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7170 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7171 (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]7172 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7173 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7174
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7175 first_param = NULL;
7176 switch (mode) {
7177 case PR_O2_AS_M_PP:
7178 first_param = memchr(begin, ';', len);
7179 break;
7180 case PR_O2_AS_M_QS:
7181 first_param = memchr(begin, '?', len);
7182 break;
7183 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7184
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7185 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7186 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7187 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7188
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7189 switch (mode) {
7190 case PR_O2_AS_M_PP:
7191 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7192 end_params = (char *) begin + len;
7193 }
7194 separator = ';';
7195 break;
7196 case PR_O2_AS_M_QS:
7197 end_params = (char *) begin + len;
7198 separator = '&';
7199 break;
7200 default:
7201 /* unknown mode, shouldn't happen */
7202 return;
7203 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7204
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7205 cur_param = next_param = end_params;
7206 while (cur_param > first_param) {
7207 cur_param--;
7208 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7209 /* let's see if this is the appsession parameter */
7210 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7211 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7212 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7213 /* Cool... it's the right one */
7214 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7215 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7216 if (value_len > 0) {
7217 manage_client_side_appsession(t, cur_param, value_len);
7218 }
7219 break;
7220 }
7221 next_param = cur_param;
7222 }
7223 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7224#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7225 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7226 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7227#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7228}
7229
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7230/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7231 * 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]7232 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7233 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7234 * 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]7235 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7236 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7237 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7238 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7239int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7240{
7241 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7242 struct http_msg *msg = &txn->req;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7243 const char *uri = msg->buf->buf.p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7244 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7245
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7246 if (!uri_auth)
7247 return 0;
7248
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7249 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]7250 return 0;
7251
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7252 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7253 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7254
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7255 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7256 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7257 return 0;
7258
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7259 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7260 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7261 return 0;
7262
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7263 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7264 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7265 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7266 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7267 break;
7268 }
7269 h++;
7270 }
7271
7272 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7273 h = uri + uri_auth->uri_len;
7274 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7275 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7276 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7277 break;
7278 }
7279 h++;
7280 }
7281 }
7282
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7283 h = uri + uri_auth->uri_len;
7284 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7285 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7286 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7287 break;
7288 }
7289 h++;
7290 }
7291
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7292 h = uri + uri_auth->uri_len;
7293 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7294 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7295 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7296 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7297 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7298 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7299 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7300 si->applet.ctx.stats.st_code = i;
7301 break;
7302 }
7303 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7304 break;
7305 }
7306 h++;
7307 }
7308
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7309 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7310
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7311 return 1;
7312}
7313
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7314/*
7315 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7316 * By default it tries to report the error position as msg->err_pos. However if
7317 * this one is not set, it will then report msg->next, which is the last known
7318 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7319 * displays buffers as a contiguous area starting at buf->buf.p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7320 */
7321void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7322 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7323 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7324{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7325 struct channel *buf = msg->buf;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7326 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7327
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7328 es->len = MIN(buf->buf.i, sizeof(es->buf));
7329 len1 = buf->buf.data + buf->buf.size - buf->buf.p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7330 len1 = MIN(len1, es->len);
7331 len2 = es->len - len1; /* remaining data if buffer wraps */
7332
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7333 memcpy(es->buf, buf->buf.p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7334 if (len2)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7335 memcpy(es->buf + len1, buf->buf.data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7336
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7337 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7338 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7339 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7340 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7341
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7342 es->when = date; // user-visible date
7343 es->sid = s->uniq_id;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7344 es->srv = target_srv(&s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7345 es->oe = other_end;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7346 es->src = s->req->prod->conn.addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7347 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7348 es->ev_id = error_snapshot_id++;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7349 es->b_flags = buf->flags;
7350 es->s_flags = s->flags;
7351 es->t_flags = s->txn.flags;
7352 es->m_flags = msg->flags;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7353 es->b_out = buf->buf.o;
7354 es->b_wrap = buf->buf.data + buf->buf.size - buf->buf.p;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7355 es->b_tot = buf->total;
7356 es->m_clen = msg->chunk_len;
7357 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7358}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7359
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7360/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7361 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7362 * performed over the whole headers. Otherwise it must contain a valid header
7363 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7364 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7365 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7366 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7367 * -1.
7368 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7369 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7370unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7371 struct hdr_idx *idx, int occ,
7372 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7373{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7374 struct hdr_ctx local_ctx;
7375 char *ptr_hist[MAX_HDR_HISTORY];
7376 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7377 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7378 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7379
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7380 if (!ctx) {
7381 local_ctx.idx = 0;
7382 ctx = &local_ctx;
7383 }
7384
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7385 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7386 /* search from the beginning */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7387 while (http_find_header2(hname, hlen, msg->buf->buf.p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7388 occ--;
7389 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7390 *vptr = ctx->line + ctx->val;
7391 *vlen = ctx->vlen;
7392 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7393 }
7394 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7395 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7396 }
7397
7398 /* negative occurrence, we scan all the list then walk back */
7399 if (-occ > MAX_HDR_HISTORY)
7400 return 0;
7401
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7402 found = hist_ptr = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7403 while (http_find_header2(hname, hlen, msg->buf->buf.p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7404 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7405 len_hist[hist_ptr] = ctx->vlen;
7406 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7407 hist_ptr = 0;
7408 found++;
7409 }
7410 if (-occ > found)
7411 return 0;
7412 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7413 * find occurrence -occ, so we have to check [hist_ptr+occ].
7414 */
7415 hist_ptr += occ;
7416 if (hist_ptr >= MAX_HDR_HISTORY)
7417 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7418 *vptr = ptr_hist[hist_ptr];
7419 *vlen = len_hist[hist_ptr];
7420 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7421}
7422
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7423/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7424 * Print a debug line with a header
7425 */
7426void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7427{
7428 int len, max;
7429 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]7430 dir, (unsigned short)si_fd(t->req->prod), (unsigned short)si_fd(t->req->cons));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7431 max = end - start;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]7432 UBOUND(max, trashlen - len - 1);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7433 len += strlcpy2(trash + len, start, max + 1);
7434 trash[len++] = '\n';
Willy Tarreau21337822012-04-29 14:11:38 +0200[diff] [blame]7435 if (write(1, trash, len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7436}
7437
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7438/*
7439 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7440 * the required fields are properly allocated and that we only need to (re)init
7441 * them. This should be used before processing any new request.
7442 */
7443void http_init_txn(struct session *s)
7444{
7445 struct http_txn *txn = &s->txn;
7446 struct proxy *fe = s->fe;
7447
7448 txn->flags = 0;
7449 txn->status = -1;
7450
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7451 global.req_count++;
7452
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7453 txn->cookie_first_date = 0;
7454 txn->cookie_last_date = 0;
7455
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7456 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7457 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7458 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7459 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7460 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7461 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7462 txn->req.chunk_len = 0LL;
7463 txn->req.body_len = 0LL;
7464 txn->rsp.chunk_len = 0LL;
7465 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7466 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7467 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]7468 txn->req.buf = s->req;
7469 txn->rsp.buf = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7470
7471 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7472
7473 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7474 if (fe->options2 & PR_O2_REQBUG_OK)
7475 txn->req.err_pos = -1; /* let buggy requests pass */
7476
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7477 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7478 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7479
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7480 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7481 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7482
7483 if (txn->hdr_idx.v)
7484 hdr_idx_init(&txn->hdr_idx);
7485}
7486
7487/* to be used at the end of a transaction */
7488void http_end_txn(struct session *s)
7489{
7490 struct http_txn *txn = &s->txn;
7491
7492 /* these ones will have been dynamically allocated */
7493 pool_free2(pool2_requri, txn->uri);
7494 pool_free2(pool2_capture, txn->cli_cookie);
7495 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7496 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7497 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7498
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7499 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7500 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7501 txn->uri = NULL;
7502 txn->srv_cookie = NULL;
7503 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7504
7505 if (txn->req.cap) {
7506 struct cap_hdr *h;
7507 for (h = s->fe->req_cap; h; h = h->next)
7508 pool_free2(h->pool, txn->req.cap[h->index]);
7509 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7510 }
7511
7512 if (txn->rsp.cap) {
7513 struct cap_hdr *h;
7514 for (h = s->fe->rsp_cap; h; h = h->next)
7515 pool_free2(h->pool, txn->rsp.cap[h->index]);
7516 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7517 }
7518
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7519}
7520
7521/* to be used at the end of a transaction to prepare a new one */
7522void http_reset_txn(struct session *s)
7523{
7524 http_end_txn(s);
7525 http_init_txn(s);
7526
7527 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7528 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7529 session_del_srv_conn(s);
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]7530 clear_target(&s->target);
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7531 /* re-init store persistence */
7532 s->store_count = 0;
7533
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7534 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7535
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7536 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7537
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7538 /* We must trim any excess data from the response buffer, because we
7539 * may have blocked an invalid response from a server that we don't
7540 * want to accidentely forward once we disable the analysers, nor do
7541 * we want those data to come along with next response. A typical
7542 * example of such data would be from a buggy server responding to
7543 * a HEAD with some data, or sending more than the advertised
7544 * content-length.
7545 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7546 if (unlikely(s->rep->buf.i))
7547 s->rep->buf.i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7548
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7549 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7550 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7551
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7552 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7553 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7554
7555 s->req->rex = TICK_ETERNITY;
7556 s->req->wex = TICK_ETERNITY;
7557 s->req->analyse_exp = TICK_ETERNITY;
7558 s->rep->rex = TICK_ETERNITY;
7559 s->rep->wex = TICK_ETERNITY;
7560 s->rep->analyse_exp = TICK_ETERNITY;
7561}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7562
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7563void free_http_req_rules(struct list *r) {
7564 struct http_req_rule *tr, *pr;
7565
7566 list_for_each_entry_safe(pr, tr, r, list) {
7567 LIST_DEL(&pr->list);
7568 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7569 free(pr->http_auth.realm);
7570
7571 free(pr);
7572 }
7573}
7574
7575struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7576{
7577 struct http_req_rule *rule;
7578 int cur_arg;
7579
7580 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7581 if (!rule) {
7582 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7583 return NULL;
7584 }
7585
7586 if (!*args[0]) {
7587 goto req_error_parsing;
7588 } else if (!strcmp(args[0], "allow")) {
7589 rule->action = HTTP_REQ_ACT_ALLOW;
7590 cur_arg = 1;
7591 } else if (!strcmp(args[0], "deny")) {
7592 rule->action = HTTP_REQ_ACT_DENY;
7593 cur_arg = 1;
7594 } else if (!strcmp(args[0], "auth")) {
7595 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7596 cur_arg = 1;
7597
7598 while(*args[cur_arg]) {
7599 if (!strcmp(args[cur_arg], "realm")) {
7600 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7601 cur_arg+=2;
7602 continue;
7603 } else
7604 break;
7605 }
7606 } else {
7607req_error_parsing:
7608 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7609 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7610 return NULL;
7611 }
7612
7613 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7614 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7615 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7616
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7617 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7618 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7619 file, linenum, args[0], errmsg);
7620 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7621 return NULL;
7622 }
7623 rule->cond = cond;
7624 }
7625 else if (*args[cur_arg]) {
7626 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7627 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7628 file, linenum, args[0], args[cur_arg]);
7629 return NULL;
7630 }
7631
7632 return rule;
7633}
7634
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7635/************************************************************************/
7636/* The code below is dedicated to ACL parsing and matching */
7637/************************************************************************/
7638
7639
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7640/* This function ensures that the prerequisites for an L7 fetch are ready,
7641 * which means that a request or response is ready. If some data is missing,
7642 * 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]7643 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7644 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7645 *
7646 * The function returns :
7647 * 0 if some data is missing or if the requested data cannot be fetched
7648 * -1 if it is certain that we'll never have any HTTP message there
7649 * 1 if an HTTP message is ready
7650 */
7651static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7652acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7653 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7654{
7655 struct http_txn *txn = l7;
7656 struct http_msg *msg = &txn->req;
7657
7658 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7659 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7660 */
7661
7662 if (unlikely(!s || !txn))
7663 return 0;
7664
7665 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7666 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7667
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7668 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7669 if (unlikely(!s->req))
7670 return 0;
7671
7672 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7673 if ((msg->msg_state == HTTP_MSG_ERROR) ||
7674 buffer_full(&s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7675 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7676 return -1;
7677 }
7678
7679 /* Try to decode HTTP request */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7680 if (likely(msg->next < s->req->buf.i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7681 http_msg_analyzer(msg, &txn->hdr_idx);
7682
7683 /* Still no valid request ? */
7684 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7685 if ((msg->msg_state == HTTP_MSG_ERROR) ||
7686 buffer_full(&s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7687 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7688 return -1;
7689 }
7690 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7691 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7692 return 0;
7693 }
7694
7695 /* OK we just got a valid HTTP request. We have some minor
7696 * preparation to perform so that further checks can rely
7697 * on HTTP tests.
7698 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7699 txn->meth = find_http_meth(msg->buf->buf.p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7700 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7701 s->flags |= SN_REDIRECTABLE;
7702
7703 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7704 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7705 return -1;
7706 }
7707 }
7708
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7709 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7710 return 0; /* data might have moved and indexes changed */
7711
7712 /* otherwise everything's ready for the request */
7713 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7714 else {
7715 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7716 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7717 return 0;
7718 }
7719
7720 /* everything's OK */
7721 return 1;
7722}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7723
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7724#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7725 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]7726
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7727#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7728 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]7729
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7730
7731/* 1. Check on METHOD
7732 * We use the pre-parsed method if it is known, and store its number as an
7733 * integer. If it is unknown, we use the pointer and the length.
7734 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7735static 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]7736{
7737 int len, meth;
7738
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7739 len = strlen(*text);
7740 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7741
7742 pattern->val.i = meth;
7743 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7744 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7745 if (!pattern->ptr.str) {
7746 if (err)
7747 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7748 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7749 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7750 pattern->len = len;
7751 }
7752 return 1;
7753}
7754
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7755/* This function fetches the method of current HTTP request and stores
7756 * it in the global pattern struct as a chunk. There are two possibilities :
7757 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
7758 * in <len> and <ptr> is NULL ;
7759 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
7760 * <len> to its length.
7761 * This is intended to be used with acl_match_meth() only.
7762 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7763static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7764acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7765 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7766{
7767 int meth;
7768 struct http_txn *txn = l7;
7769
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7770 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7771
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7772 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7773 smp->type = SMP_T_UINT;
7774 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7775 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7776 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
7777 /* ensure the indexes are not affected */
7778 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7779 smp->type = SMP_T_CSTR;
7780 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7781 smp->data.str.str = txn->req.buf->buf.p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7782 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7783 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7784 return 1;
7785}
7786
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7787/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7788static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7789{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7790 int icase;
7791
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7792
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7793 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7794 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7795 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7796 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7797 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7798 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7799
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7800 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
7801 if (pattern->val.i != HTTP_METH_OTHER)
7802 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7803
7804 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7805 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7806 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7807
7808 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7809 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
7810 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7811 return ACL_PAT_FAIL;
7812 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7813}
7814
7815/* 2. Check on Request/Status Version
7816 * We simply compare strings here.
7817 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7818static 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]7819{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7820 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7821 if (!pattern->ptr.str) {
7822 if (err)
7823 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7824 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7825 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7826 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7827 return 1;
7828}
7829
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7830static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7831acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7832 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7833{
7834 struct http_txn *txn = l7;
7835 char *ptr;
7836 int len;
7837
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7838 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7839
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7840 len = txn->req.sl.rq.v_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7841 ptr = txn->req.buf->buf.p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7842
7843 while ((len-- > 0) && (*ptr++ != '/'));
7844 if (len <= 0)
7845 return 0;
7846
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7847 smp->type = SMP_T_CSTR;
7848 smp->data.str.str = ptr;
7849 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7850
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7851 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7852 return 1;
7853}
7854
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7855static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7856acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7857 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7858{
7859 struct http_txn *txn = l7;
7860 char *ptr;
7861 int len;
7862
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7863 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7864
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7865 len = txn->rsp.sl.st.v_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7866 ptr = txn->rsp.buf->buf.p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7867
7868 while ((len-- > 0) && (*ptr++ != '/'));
7869 if (len <= 0)
7870 return 0;
7871
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7872 smp->type = SMP_T_CSTR;
7873 smp->data.str.str = ptr;
7874 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7875
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7876 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7877 return 1;
7878}
7879
7880/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7881static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7882acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7883 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7884{
7885 struct http_txn *txn = l7;
7886 char *ptr;
7887 int len;
7888
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7889 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7890
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7891 len = txn->rsp.sl.st.c_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7892 ptr = txn->rsp.buf->buf.p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7893
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7894 smp->type = SMP_T_UINT;
7895 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7896 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7897 return 1;
7898}
7899
7900/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7901static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7902smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7903 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7904{
7905 struct http_txn *txn = l7;
7906
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7907 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7908
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7909 smp->type = SMP_T_CSTR;
7910 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7911 smp->data.str.str = txn->req.buf->buf.p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7912 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7913 return 1;
7914}
7915
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7916static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7917smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7918 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7919{
7920 struct http_txn *txn = l7;
7921
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7922 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7923
7924 /* Parse HTTP request */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7925 url2sa(txn->req.buf->buf.p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn.addr.to);
7926 if (((struct sockaddr_in *)&l4->req->cons->conn.addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]7927 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7928 smp->type = SMP_T_IPV4;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7929 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn.addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7930
7931 /*
7932 * If we are parsing url in frontend space, we prepare backend stage
7933 * to not parse again the same url ! optimization lazyness...
7934 */
7935 if (px->options & PR_O_HTTP_PROXY)
7936 l4->flags |= SN_ADDR_SET;
7937
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7938 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7939 return 1;
7940}
7941
7942static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7943smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7944 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7945{
7946 struct http_txn *txn = l7;
7947
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7948 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7949
7950 /* Same optimization as url_ip */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7951 url2sa(txn->req.buf->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]7952 smp->type = SMP_T_UINT;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7953 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]7954
7955 if (px->options & PR_O_HTTP_PROXY)
7956 l4->flags |= SN_ADDR_SET;
7957
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7958 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7959 return 1;
7960}
7961
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7962/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
7963 * Accepts an optional argument of type string containing the header field name,
7964 * and an optional argument of type signed or unsigned integer to request an
7965 * explicit occurrence of the header. Note that in the event of a missing name,
7966 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7967 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7968static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7969smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7970 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7971{
7972 struct http_txn *txn = l7;
7973 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7974 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7975 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]7976 int occ = 0;
7977 const char *name_str = NULL;
7978 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7979
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7980 if (args) {
7981 if (args[0].type != ARGT_STR)
7982 return 0;
7983 name_str = args[0].data.str.str;
7984 name_len = args[0].data.str.len;
7985
7986 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
7987 occ = args[1].data.uint;
7988 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7989
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7990 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7991
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7992 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7993 /* search for header from the beginning */
7994 ctx->idx = 0;
7995
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7996 if (!occ && !(opt & SMP_OPT_ITERATE))
7997 /* no explicit occurrence and single fetch => last header by default */
7998 occ = -1;
7999
8000 if (!occ)
8001 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8002 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8003
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8004 smp->type = SMP_T_CSTR;
8005 smp->flags |= SMP_F_VOL_HDR;
8006 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]8007 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8008
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8009 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8010 return 0;
8011}
8012
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8013/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8014 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8015 */
8016static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8017smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8018 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8019{
8020 struct http_txn *txn = l7;
8021 struct hdr_idx *idx = &txn->hdr_idx;
8022 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8023 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]8024 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8025
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8026 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8027 return 0;
8028
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8029 CHECK_HTTP_MESSAGE_FIRST();
8030
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8031 ctx.idx = 0;
8032 cnt = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8033 while (http_find_header2(args->data.str.str, args->data.str.len, msg->buf->buf.p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8034 cnt++;
8035
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8036 smp->type = SMP_T_UINT;
8037 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8038 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8039 return 1;
8040}
8041
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8042/* Fetch an HTTP header's integer value. The integer value is returned. It
8043 * takes a mandatory argument of type string and an optional one of type int
8044 * to designate a specific occurrence. It returns an unsigned integer, which
8045 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8046 */
8047static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8048smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8049 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8050{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8051 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8052
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8053 if (ret > 0) {
8054 smp->type = SMP_T_UINT;
8055 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8056 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8057
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8058 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8059}
8060
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8061/* Fetch an HTTP header's integer value. The integer value is returned. It
8062 * takes a mandatory argument of type string and an optional one of type int
8063 * to designate a specific occurrence. It returns an IPv4 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8064 */
8065static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8066smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8067 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8068{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8069 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8070
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8071 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8072 smp->type = SMP_T_IPV4;
8073 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4))
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8074 break;
8075 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8076 if (!(smp->flags & SMP_F_NOT_LAST))
8077 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8078 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8079 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8080}
8081
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8082/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8083 * the first '/' after the possible hostname, and ends before the possible '?'.
8084 */
8085static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8086smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8087 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8088{
8089 struct http_txn *txn = l7;
8090 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8091
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8092 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8093
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8094 end = txn->req.buf->buf.p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]8095 ptr = http_get_path(txn);
8096 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8097 return 0;
8098
8099 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8100 smp->type = SMP_T_CSTR;
8101 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8102
8103 while (ptr < end && *ptr != '?')
8104 ptr++;
8105
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8106 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8107 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8108 return 1;
8109}
8110
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8111/* This produces a concatenation of the first occurrence of the Host header
8112 * followed by the path component if it begins with a slash ('/'). This means
8113 * that '*' will not be added, resulting in exactly the first Host entry.
8114 * If no Host header is found, then the path is returned as-is. The returned
8115 * value is stored in the trash so it does not need to be marked constant.
8116 */
8117static int
8118smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8119 const struct arg *args, struct sample *smp)
8120{
8121 struct http_txn *txn = l7;
8122 char *ptr, *end, *beg;
8123 struct hdr_ctx ctx;
8124
8125 CHECK_HTTP_MESSAGE_FIRST();
8126
8127 ctx.idx = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8128 if (!http_find_header2("Host", 4, txn->req.buf->buf.p + txn->req.sol, &txn->hdr_idx, &ctx) ||
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8129 !ctx.vlen)
8130 return smp_fetch_path(px, l4, l7, opt, args, smp);
8131
8132 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8133 memcpy(trash, ctx.line + ctx.val, ctx.vlen);
8134 smp->type = SMP_T_STR;
8135 smp->data.str.str = trash;
8136 smp->data.str.len = ctx.vlen;
8137
8138 /* now retrieve the path */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8139 end = txn->req.buf->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]8140 beg = http_get_path(txn);
8141 if (!beg)
8142 beg = end;
8143
8144 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8145
8146 if (beg < ptr && *beg == '/') {
8147 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8148 smp->data.str.len += ptr - beg;
8149 }
8150
8151 smp->flags = SMP_F_VOL_1ST;
8152 return 1;
8153}
8154
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8155static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8156acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8157 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8158{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8159 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8160 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8161 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8162
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8163 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8164
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8165 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8166 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8167 return 1;
8168}
8169
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8170/* return a valid test if the current request is the first one on the connection */
8171static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8172acl_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]8173 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8174{
8175 if (!s)
8176 return 0;
8177
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8178 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8179 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8180 return 1;
8181}
8182
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8183/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8184static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8185acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8186 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8187{
8188
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8189 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8190 return 0;
8191
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8192 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8193
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8194 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8195 return 0;
8196
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8197 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8198 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]8199 return 1;
8200}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8201
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8202/* Accepts exactly 1 argument of type userlist */
8203static int
8204acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8205 const struct arg *args, struct sample *smp)
8206{
8207
8208 if (!args || args->type != ARGT_USR)
8209 return 0;
8210
8211 CHECK_HTTP_MESSAGE_FIRST();
8212
8213 if (!get_http_auth(l4))
8214 return 0;
8215
8216 /* acl_match_auth() will need several information at once */
8217 smp->ctx.a[0] = args->data.usr; /* user list */
8218 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8219 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8220
8221 /* if the user does not belong to the userlist or has a wrong password,
8222 * report that it unconditionally does not match. Otherwise we return
8223 * a non-zero integer which will be ignored anyway since all the params
8224 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8225 */
8226 smp->type = SMP_T_BOOL;
8227 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8228 if (smp->data.uint)
8229 smp->type = SMP_T_UINT;
8230
8231 return 1;
8232}
8233
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8234/* Try to find the next occurrence of a cookie name in a cookie header value.
8235 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8236 * the cookie value is returned into *value and *value_l, and the function
8237 * returns a pointer to the next pointer to search from if the value was found.
8238 * Otherwise if the cookie was not found, NULL is returned and neither value
8239 * nor value_l are touched. The input <hdr> string should first point to the
8240 * header's value, and the <hdr_end> pointer must point to the first character
8241 * not part of the value. <list> must be non-zero if value may represent a list
8242 * of values (cookie headers). This makes it faster to abort parsing when no
8243 * list is expected.
8244 */
8245static char *
8246extract_cookie_value(char *hdr, const char *hdr_end,
8247 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8248 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8249{
8250 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8251 char *next;
8252
8253 /* we search at least a cookie name followed by an equal, and more
8254 * generally something like this :
8255 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8256 */
8257 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8258 /* Iterate through all cookies on this line */
8259
8260 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8261 att_beg++;
8262
8263 /* find att_end : this is the first character after the last non
8264 * space before the equal. It may be equal to hdr_end.
8265 */
8266 equal = att_end = att_beg;
8267
8268 while (equal < hdr_end) {
8269 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8270 break;
8271 if (http_is_spht[(unsigned char)*equal++])
8272 continue;
8273 att_end = equal;
8274 }
8275
8276 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8277 * is between <att_beg> and <equal>, both may be identical.
8278 */
8279
8280 /* look for end of cookie if there is an equal sign */
8281 if (equal < hdr_end && *equal == '=') {
8282 /* look for the beginning of the value */
8283 val_beg = equal + 1;
8284 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8285 val_beg++;
8286
8287 /* find the end of the value, respecting quotes */
8288 next = find_cookie_value_end(val_beg, hdr_end);
8289
8290 /* make val_end point to the first white space or delimitor after the value */
8291 val_end = next;
8292 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8293 val_end--;
8294 } else {
8295 val_beg = val_end = next = equal;
8296 }
8297
8298 /* We have nothing to do with attributes beginning with '$'. However,
8299 * they will automatically be removed if a header before them is removed,
8300 * since they're supposed to be linked together.
8301 */
8302 if (*att_beg == '$')
8303 continue;
8304
8305 /* Ignore cookies with no equal sign */
8306 if (equal == next)
8307 continue;
8308
8309 /* Now we have the cookie name between att_beg and att_end, and
8310 * its value between val_beg and val_end.
8311 */
8312
8313 if (att_end - att_beg == cookie_name_l &&
8314 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8315 /* let's return this value and indicate where to go on from */
8316 *value = val_beg;
8317 *value_l = val_end - val_beg;
8318 return next + 1;
8319 }
8320
8321 /* Set-Cookie headers only have the name in the first attr=value part */
8322 if (!list)
8323 break;
8324 }
8325
8326 return NULL;
8327}
8328
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8329/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8330 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8331 * 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]8332 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8333 * 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]8334 * Accepts exactly 1 argument of type string. If the input options indicate
8335 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8336 */
8337static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8338smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8339 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8340{
8341 struct http_txn *txn = l7;
8342 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8343 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8344 const struct http_msg *msg;
8345 const char *hdr_name;
8346 int hdr_name_len;
8347 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8348 int occ = 0;
8349 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8350
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8351 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8352 return 0;
8353
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8354 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8355
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8356 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8357 msg = &txn->req;
8358 hdr_name = "Cookie";
8359 hdr_name_len = 6;
8360 } else {
8361 msg = &txn->rsp;
8362 hdr_name = "Set-Cookie";
8363 hdr_name_len = 10;
8364 }
8365
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8366 if (!occ && !(opt & SMP_OPT_ITERATE))
8367 /* no explicit occurrence and single fetch => last cookie by default */
8368 occ = -1;
8369
8370 /* OK so basically here, either we want only one value and it's the
8371 * last one, or we want to iterate over all of them and we fetch the
8372 * next one.
8373 */
8374
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8375 sol = msg->buf->buf.p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8376 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8377 /* search for the header from the beginning, we must first initialize
8378 * the search parameters.
8379 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8380 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8381 ctx->idx = 0;
8382 }
8383
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8384 smp->flags |= SMP_F_VOL_HDR;
8385
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8386 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8387 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8388 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8389 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8390 goto out;
8391
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8392 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8393 continue;
8394
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8395 smp->ctx.a[0] = ctx->line + ctx->val;
8396 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8397 }
8398
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8399 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8400 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]8401 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8402 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8403 &smp->data.str.str,
8404 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8405 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8406 found = 1;
8407 if (occ >= 0) {
8408 /* one value was returned into smp->data.str.{str,len} */
8409 smp->flags |= SMP_F_NOT_LAST;
8410 return 1;
8411 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8412 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8413 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8414 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8415 /* all cookie headers and values were scanned. If we're looking for the
8416 * last occurrence, we may return it now.
8417 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8418 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8419 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8420 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8421}
8422
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8423/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8424 * 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]8425 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8426 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8427 */
8428static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8429acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8430 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8431{
8432 struct http_txn *txn = l7;
8433 struct hdr_idx *idx = &txn->hdr_idx;
8434 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8435 const struct http_msg *msg;
8436 const char *hdr_name;
8437 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8438 int cnt;
8439 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8440 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8441
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8442 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8443 return 0;
8444
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8445 CHECK_HTTP_MESSAGE_FIRST();
8446
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8447 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8448 msg = &txn->req;
8449 hdr_name = "Cookie";
8450 hdr_name_len = 6;
8451 } else {
8452 msg = &txn->rsp;
8453 hdr_name = "Set-Cookie";
8454 hdr_name_len = 10;
8455 }
8456
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8457 sol = msg->buf->buf.p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8458 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8459 ctx.idx = 0;
8460 cnt = 0;
8461
8462 while (1) {
8463 /* Note: val_beg == NULL every time we need to fetch a new header */
8464 if (!val_beg) {
8465 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8466 break;
8467
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8468 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8469 continue;
8470
8471 val_beg = ctx.line + ctx.val;
8472 val_end = val_beg + ctx.vlen;
8473 }
8474
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8475 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8476 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8477 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8478 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8479 &smp->data.str.str,
8480 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8481 cnt++;
8482 }
8483 }
8484
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8485 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8486 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8487 return 1;
8488}
8489
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8490/* Fetch an cookie's integer value. The integer value is returned. It
8491 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8492 */
8493static int
8494smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8495 const struct arg *args, struct sample *smp)
8496{
8497 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8498
8499 if (ret > 0) {
8500 smp->type = SMP_T_UINT;
8501 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8502 }
8503
8504 return ret;
8505}
8506
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8507/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8508/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8509/************************************************************************/
8510
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8511/*
8512 * Given a path string and its length, find the position of beginning of the
8513 * query string. Returns NULL if no query string is found in the path.
8514 *
8515 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8516 *
8517 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8518 */
8519static inline char *find_query_string(char *path, size_t path_l)
8520{
8521 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8522
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8523 p = memchr(path, '?', path_l);
8524 return p ? p + 1 : NULL;
8525}
8526
8527static inline int is_param_delimiter(char c)
8528{
8529 return c == '&' || c == ';';
8530}
8531
8532/*
8533 * Given a url parameter, find the starting position of the first occurence,
8534 * or NULL if the parameter is not found.
8535 *
8536 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8537 * the function will return query_string+8.
8538 */
8539static char*
8540find_url_param_pos(char* query_string, size_t query_string_l,
8541 char* url_param_name, size_t url_param_name_l)
8542{
8543 char *pos, *last;
8544
8545 pos = query_string;
8546 last = query_string + query_string_l - url_param_name_l - 1;
8547
8548 while (pos <= last) {
8549 if (pos[url_param_name_l] == '=') {
8550 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8551 return pos;
8552 pos += url_param_name_l + 1;
8553 }
8554 while (pos <= last && !is_param_delimiter(*pos))
8555 pos++;
8556 pos++;
8557 }
8558 return NULL;
8559}
8560
8561/*
8562 * Given a url parameter name, returns its value and size into *value and
8563 * *value_l respectively, and returns non-zero. If the parameter is not found,
8564 * zero is returned and value/value_l are not touched.
8565 */
8566static int
8567find_url_param_value(char* path, size_t path_l,
8568 char* url_param_name, size_t url_param_name_l,
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8569 char** value, int* value_l)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8570{
8571 char *query_string, *qs_end;
8572 char *arg_start;
8573 char *value_start, *value_end;
8574
8575 query_string = find_query_string(path, path_l);
8576 if (!query_string)
8577 return 0;
8578
8579 qs_end = path + path_l;
8580 arg_start = find_url_param_pos(query_string, qs_end - query_string,
8581 url_param_name, url_param_name_l);
8582 if (!arg_start)
8583 return 0;
8584
8585 value_start = arg_start + url_param_name_l + 1;
8586 value_end = value_start;
8587
8588 while ((value_end < qs_end) && !is_param_delimiter(*value_end))
8589 value_end++;
8590
8591 *value = value_start;
8592 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8593 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8594}
8595
8596static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8597smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8598 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8599{
8600 struct http_txn *txn = l7;
8601 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8602
8603 if (!args || args->type != ARGT_STR)
8604 return 0;
8605
8606 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8607
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8608 if (!find_url_param_value(msg->buf->buf.p + msg->sl.rq.u, msg->sl.rq.u_l,
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8609 args->data.str.str, args->data.str.len,
8610 &smp->data.str.str, &smp->data.str.len))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8611 return 0;
8612
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8613 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8614 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8615 return 1;
8616}
8617
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8618/* Return the signed integer value for the specified url parameter (see url_param
8619 * above).
8620 */
8621static int
8622smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8623 const struct arg *args, struct sample *smp)
8624{
8625 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8626
8627 if (ret > 0) {
8628 smp->type = SMP_T_UINT;
8629 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8630 }
8631
8632 return ret;
8633}
8634
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8635/* This function is used to validate the arguments passed to any "hdr" fetch
8636 * keyword. These keywords support an optional positive or negative occurrence
8637 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8638 * is assumed that the types are already the correct ones. Returns 0 on error,
8639 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8640 * error message in case of error, that the caller is responsible for freeing.
8641 * The initial location must either be freeable or NULL.
8642 */
8643static int val_hdr(struct arg *arg, char **err_msg)
8644{
8645 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
8646 if (err_msg)
8647 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
8648 return 0;
8649 }
8650 return 1;
8651}
8652
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8653/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8654/* All supported ACL keywords must be declared here. */
8655/************************************************************************/
8656
8657/* Note: must not be declared <const> as its list will be overwritten.
8658 * Please take care of keeping this list alphabetically sorted.
8659 */
8660static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8661 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8662 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8663 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8664 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8665 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8666 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8667 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8668 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8669
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8670 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8671 { "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]8672 { "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]8673 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8674 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8675 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8676 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8677 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8678 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8679 { "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]8680
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8681 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8682 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8683 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8684 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8685 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8686 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8687 { "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 },
8688 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8689 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8690 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8691 { "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]8692
8693 { "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]8694 { "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]8695 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8696
8697 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8698
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8699 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8700 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8701 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8702 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8703 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8704 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8705 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8706 { "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]8707
8708 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8709 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8710 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8711
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8712 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8713 { "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]8714 { "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]8715 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8716 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8717 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8718 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8719 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8720 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8721 { "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]8722
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8723 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8724 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8725 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8726 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8727 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8728 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8729 { "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 },
8730 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8731 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8732 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8733 { "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]8734
8735 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
8736
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8737 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8738 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8739 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8740 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8741 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8742 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8743 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8744 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
8745 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8746 { "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]8747
8748 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8749 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8750 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8751 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8752 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8753 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8754 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8755 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8756 { "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]8757 { "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]8758
8759 { NULL, NULL, NULL, NULL },
8760}};
8761
8762/************************************************************************/
8763/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8764/************************************************************************/
8765/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8766static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8767 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_REQ },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8768 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_REQ },
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8769 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_REQ },
8770 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_REQ },
8771 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_REQ },
8772 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_REQ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8773 { "url_param", smp_fetch_url_param, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_REQ },
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8774 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_REQ|SMP_CAP_RES },
8775 { "set-cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_RES }, /* deprecated */
Willy Tarreau9fcb9842012-04-20 14:45:49 +0200[diff] [blame]8776 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8777}};
8778
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8779
8780__attribute__((constructor))
8781static void __http_protocol_init(void)
8782{
8783 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8784 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8785}
8786
8787
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8788/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8789 * Local variables:
8790 * c-indent-level: 8
8791 * c-basic-offset: 8
8792 * End:
8793 */