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git01.mediatek.com / haproxy / 71e451c74cc1b71576bab6f2fe329f8390d57868 / . / src / proto_http.c
blob: dfd8f3f7a1acf9c7ff25b799e9950b5a203d7bee [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 Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1322 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1323 hdr_idx_init(idx);
1324 state = HTTP_MSG_RPVER;
1325 goto http_msg_rpver;
1326 }
1327
1328 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1329 goto http_msg_invalid;
1330
1331 if (unlikely(*ptr == '\n'))
1332 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1333 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1334 /* stop here */
1335
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1336 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1337 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1338 EXPECT_LF_HERE(ptr, http_msg_invalid);
1339 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1340 /* stop here */
1341
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1342 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1343 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1344 case HTTP_MSG_RPVER_SP:
1345 case HTTP_MSG_RPCODE:
1346 case HTTP_MSG_RPCODE_SP:
1347 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1348 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1349 state, ptr, end,
1350 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1351 if (unlikely(!ptr))
1352 return;
1353
1354 /* we have a full response and we know that we have either a CR
1355 * or an LF at <ptr>.
1356 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1357 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1358
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1359 msg->sol = ptr - buf->buf.p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1360 if (likely(*ptr == '\r'))
1361 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1362 goto http_msg_rpline_end;
1363
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1364 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1365 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1366 /* msg->sol must point to the first of CR or LF. */
1367 EXPECT_LF_HERE(ptr, http_msg_invalid);
1368 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1369 /* stop here */
1370
1371 /*
1372 * Second, states that are specific to the request only
1373 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1374 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1375 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1376 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1377 /* we have a start of message, but we have to check
1378 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1379 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1380 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1381 if (likely(ptr != buf->buf.p)) {
1382 if (buf->buf.o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1383 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1384 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1385 bi_fast_delete(&buf->buf, ptr - buf->buf.p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1387 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1388 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1389 state = HTTP_MSG_RQMETH;
1390 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1391 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1392
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1394 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1395
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1396 if (unlikely(*ptr == '\n'))
1397 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1398 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1399 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1400
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1401 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1402 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1403 EXPECT_LF_HERE(ptr, http_msg_invalid);
1404 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1405 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1406
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1407 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1408 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1409 case HTTP_MSG_RQMETH_SP:
1410 case HTTP_MSG_RQURI:
1411 case HTTP_MSG_RQURI_SP:
1412 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1413 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1414 state, ptr, end,
1415 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1416 if (unlikely(!ptr))
1417 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1418
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 /* we have a full request and we know that we have either a CR
1420 * or an LF at <ptr>.
1421 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1423
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1424 msg->sol = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 if (likely(*ptr == '\r'))
1426 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1428
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1429 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1430 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1431 /* check for HTTP/0.9 request : no version information available.
1432 * msg->sol must point to the first of CR or LF.
1433 */
1434 if (unlikely(msg->sl.rq.v_l == 0))
1435 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1436
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1437 EXPECT_LF_HERE(ptr, http_msg_invalid);
1438 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1439 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1440
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1441 /*
1442 * Common states below
1443 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1444 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1445 http_msg_hdr_first:
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1446 msg->sol = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1447 if (likely(!HTTP_IS_CRLF(*ptr))) {
1448 goto http_msg_hdr_name;
1449 }
1450
1451 if (likely(*ptr == '\r'))
1452 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1453 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1454
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1455 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1456 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1457 /* assumes msg->sol points to the first char */
1458 if (likely(HTTP_IS_TOKEN(*ptr)))
1459 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1460
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1461 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1462 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]1463
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1464 if (likely(msg->err_pos < -1) || *ptr == '\n')
1465 goto http_msg_invalid;
1466
1467 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1468 msg->err_pos = ptr - buf->buf.p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1469
1470 /* and we still accept this non-token character */
1471 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1472
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1474 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1475 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 if (likely(HTTP_IS_SPHT(*ptr)))
1477 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]1478
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1479 /* header value can be basically anything except CR/LF */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1480 msg->sov = ptr - buf->buf.p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1481
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1482 if (likely(!HTTP_IS_CRLF(*ptr))) {
1483 goto http_msg_hdr_val;
1484 }
1485
1486 if (likely(*ptr == '\r'))
1487 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1488 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1489
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1490 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1491 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 EXPECT_LF_HERE(ptr, http_msg_invalid);
1493 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]1494
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1495 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1496 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 if (likely(HTTP_IS_SPHT(*ptr))) {
1498 /* replace HT,CR,LF with spaces */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1499 for (; buf->buf.p + msg->sov < ptr; msg->sov++)
1500 buf->buf.p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 goto http_msg_hdr_l1_sp;
1502 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1503 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1504 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1505 goto http_msg_complete_header;
1506
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1508 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1509 /* assumes msg->sol points to the first char, and msg->sov
1510 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1511 */
1512 if (likely(!HTTP_IS_CRLF(*ptr)))
1513 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1514
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1515 msg->eol = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 /* Note: we could also copy eol into ->eoh so that we have the
1517 * real header end in case it ends with lots of LWS, but is this
1518 * really needed ?
1519 */
1520 if (likely(*ptr == '\r'))
1521 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1522 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1523
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1525 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1526 EXPECT_LF_HERE(ptr, http_msg_invalid);
1527 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]1528
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1529 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1530 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1532 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1533 for (; buf->buf.p + msg->eol < ptr; msg->eol++)
1534 buf->buf.p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 goto http_msg_hdr_val;
1536 }
1537 http_msg_complete_header:
1538 /*
1539 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1540 * Assumes msg->sol points to the first char, msg->sov points
1541 * to the first character of the value and msg->eol to the
1542 * first CR or LF so we know how the line ends. We insert last
1543 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1544 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1545 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]1546 idx, idx->tail) < 0))
1547 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1548
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1549 msg->sol = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1550 if (likely(!HTTP_IS_CRLF(*ptr))) {
1551 goto http_msg_hdr_name;
1552 }
1553
1554 if (likely(*ptr == '\r'))
1555 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1556 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1557
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1558 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1559 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1560 /* Assumes msg->sol points to the first of either CR or LF */
1561 EXPECT_LF_HERE(ptr, http_msg_invalid);
1562 ptr++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1563 msg->sov = msg->next = ptr - buf->buf.p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1564 msg->eoh = msg->sol;
1565 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1566 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1567 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1568
1569 case HTTP_MSG_ERROR:
1570 /* this may only happen if we call http_msg_analyser() twice with an error */
1571 break;
1572
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1573#ifdef DEBUG_FULL
1574 default:
1575 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1576 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1577#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1578 }
1579 http_msg_ood:
1580 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1581 msg->msg_state = state;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1582 msg->next = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1583 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1584
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 http_msg_invalid:
1586 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1587 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1588 msg->next = ptr - buf->buf.p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1589 return;
1590}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1591
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1592/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1593 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1594 * nothing is done and 1 is returned.
1595 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1596static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1597{
1598 int delta;
1599 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1600 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1601
1602 if (msg->sl.rq.v_l != 0)
1603 return 1;
1604
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1605 cur_end = msg->buf->buf.p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1606 delta = 0;
1607
1608 if (msg->sl.rq.u_l == 0) {
1609 /* if no URI was set, add "/" */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]1610 delta = buffer_replace2(&msg->buf->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1611 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1612 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1613 }
1614 /* add HTTP version */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]1615 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]1616 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1617 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1618 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1619 HTTP_MSG_RQMETH,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1620 msg->buf->buf.p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1621 NULL, NULL);
1622 if (unlikely(!cur_end))
1623 return 0;
1624
1625 /* we have a full HTTP/1.0 request now and we know that
1626 * we have either a CR or an LF at <ptr>.
1627 */
1628 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1629 return 1;
1630}
1631
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1632/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1633 * and "keep-alive" values. If we already know that some headers may safely
1634 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1635 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1636 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
1637 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1638 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1639 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1640 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1641 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1642void 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]1643{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1644 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1645 const char *hdr_val = "Connection";
1646 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1647
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1648 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1649 return;
1650
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1651 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1652 hdr_val = "Proxy-Connection";
1653 hdr_len = 16;
1654 }
1655
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1656 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1657 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1658 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]1659 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1660 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1661 if (to_del & 2)
1662 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1663 else
1664 txn->flags |= TX_CON_KAL_SET;
1665 }
1666 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1667 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1668 if (to_del & 1)
1669 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1670 else
1671 txn->flags |= TX_CON_CLO_SET;
1672 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1673 }
1674
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1675 txn->flags |= TX_HDR_CONN_PRS;
1676 return;
1677}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1678
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1679/* Apply desired changes on the Connection: header. Values may be removed and/or
1680 * added depending on the <wanted> flags, which are exclusively composed of
1681 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1682 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1683 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1684void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1685{
1686 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1687 const char *hdr_val = "Connection";
1688 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1689
1690 ctx.idx = 0;
1691
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1692
1693 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1694 hdr_val = "Proxy-Connection";
1695 hdr_len = 16;
1696 }
1697
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1698 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1699 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]1700 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1701 if (wanted & TX_CON_KAL_SET)
1702 txn->flags |= TX_CON_KAL_SET;
1703 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1704 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1705 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1706 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1707 if (wanted & TX_CON_CLO_SET)
1708 txn->flags |= TX_CON_CLO_SET;
1709 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1710 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1711 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1712 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1713
1714 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1715 return;
1716
1717 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1718 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1719 hdr_val = "Connection: close";
1720 hdr_len = 17;
1721 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1722 hdr_val = "Proxy-Connection: close";
1723 hdr_len = 23;
1724 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1725 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1726 }
1727
1728 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1729 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1730 hdr_val = "Connection: keep-alive";
1731 hdr_len = 22;
1732 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1733 hdr_val = "Proxy-Connection: keep-alive";
1734 hdr_len = 28;
1735 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1736 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1737 }
1738 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1739}
1740
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1741/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1742 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1743 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1744 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1745 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1746 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1747int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1748{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1749 const struct channel *buf = msg->buf;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1750 const char *ptr = b_ptr(&buf->buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1751 const char *ptr_old = ptr;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1752 const char *end = buf->buf.data + buf->buf.size;
1753 const char *stop = bi_end(&buf->buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1754 unsigned int chunk = 0;
1755
1756 /* The chunk size is in the following form, though we are only
1757 * interested in the size and CRLF :
1758 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1759 */
1760 while (1) {
1761 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1762 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1763 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1764 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1765 if (c < 0) /* not a hex digit anymore */
1766 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1767 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1768 ptr = buf->buf.data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1769 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1770 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1771 chunk = (chunk << 4) + c;
1772 }
1773
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1774 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1775 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1776 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1777
1778 while (http_is_spht[(unsigned char)*ptr]) {
1779 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1780 ptr = buf->buf.data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1781 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1782 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 }
1784
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1785 /* Up to there, we know that at least one byte is present at *ptr. Check
1786 * for the end of chunk size.
1787 */
1788 while (1) {
1789 if (likely(HTTP_IS_CRLF(*ptr))) {
1790 /* we now have a CR or an LF at ptr */
1791 if (likely(*ptr == '\r')) {
1792 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1793 ptr = buf->buf.data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1794 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1795 return 0;
1796 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1797
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1798 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1799 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1800 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1801 ptr = buf->buf.data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1802 /* done */
1803 break;
1804 }
1805 else if (*ptr == ';') {
1806 /* chunk extension, ends at next CRLF */
1807 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1808 ptr = buf->buf.data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1809 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1810 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1811
1812 while (!HTTP_IS_CRLF(*ptr)) {
1813 if (++ptr >= end)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1814 ptr = buf->buf.data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1815 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1816 return 0;
1817 }
1818 /* we have a CRLF now, loop above */
1819 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1820 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1821 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1822 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1823 }
1824
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1825 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1826 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1827 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1828 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1829 if (ptr < ptr_old)
1830 msg->sov += buf->buf.size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1831 msg->sov += ptr - ptr_old;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1832 msg->next = buffer_count(&buf->buf, buf->buf.p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1833 msg->chunk_len = chunk;
1834 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1835 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1836 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1837 error:
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1838 msg->err_pos = buffer_count(&buf->buf, buf->buf.p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1839 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1840}
1841
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1842/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1843 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1844 * the trailers is found, it is automatically scheduled to be forwarded,
1845 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1846 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1847 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1848 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1849 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1850 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1851 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1852 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1853 * matches the length of trailers already parsed and not forwarded. It is also
1854 * important to note that this function is designed to be able to parse wrapped
1855 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1856 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1857int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1859 const struct channel *buf = msg->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1860
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1861 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1862 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1863 const char *p1 = NULL, *p2 = NULL;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1864 const char *ptr = b_ptr(&buf->buf, msg->next);
1865 const char *stop = bi_end(&buf->buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1866 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1867
1868 /* scan current line and stop at LF or CRLF */
1869 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1870 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1871 return 0;
1872
1873 if (*ptr == '\n') {
1874 if (!p1)
1875 p1 = ptr;
1876 p2 = ptr;
1877 break;
1878 }
1879
1880 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1881 if (p1) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1882 msg->err_pos = buffer_count(&buf->buf, buf->buf.p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1883 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1884 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1885 p1 = ptr;
1886 }
1887
1888 ptr++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1889 if (ptr >= buf->buf.data + buf->buf.size)
1890 ptr = buf->buf.data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1891 }
1892
1893 /* after LF; point to beginning of next line */
1894 p2++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1895 if (p2 >= buf->buf.data + buf->buf.size)
1896 p2 = buf->buf.data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1897
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1898 bytes = p2 - b_ptr(&buf->buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1899 if (bytes < 0)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1900 bytes += buf->buf.size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1901
1902 /* schedule this line for forwarding */
1903 msg->sov += bytes;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1904 if (msg->sov >= buf->buf.size)
1905 msg->sov -= buf->buf.size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1906
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1907 if (p1 == b_ptr(&buf->buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1908 /* LF/CRLF at beginning of line => end of trailers at p2.
1909 * Everything was scheduled for forwarding, there's nothing
1910 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1911 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1912 msg->next = buffer_count(&buf->buf, buf->buf.p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1913 msg->msg_state = HTTP_MSG_DONE;
1914 return 1;
1915 }
1916 /* OK, next line then */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1917 msg->next = buffer_count(&buf->buf, buf->buf.p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1918 }
1919}
1920
1921/* This function may be called only in HTTP_MSG_DATA_CRLF. It reads the CRLF or
1922 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1923 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1924 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1925 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1926 * not enough data are available, the function does not change anything and
1927 * returns zero. If a parse error is encountered, the function returns < 0 and
1928 * does not change anything. Note: this function is designed to parse wrapped
1929 * CRLF at the end of the buffer.
1930 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1931int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1932{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1933 const struct channel *buf = msg->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1934 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1935 int bytes;
1936
1937 /* NB: we'll check data availabilty at the end. It's not a
1938 * problem because whatever we match first will be checked
1939 * against the correct length.
1940 */
1941 bytes = 1;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1942 ptr = buf->buf.p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1943 if (*ptr == '\r') {
1944 bytes++;
1945 ptr++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1946 if (ptr >= buf->buf.data + buf->buf.size)
1947 ptr = buf->buf.data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1948 }
1949
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1950 if (bytes > buf->buf.i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951 return 0;
1952
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1953 if (*ptr != '\n') {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1954 msg->err_pos = buffer_count(&buf->buf, buf->buf.p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1956 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1957
1958 ptr++;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1959 if (ptr >= buf->buf.data + buf->buf.size)
1960 ptr = buf->buf.data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1961 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1962 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1963 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1964 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1965 return 1;
1966}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1967
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1968/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1969 * processing can continue on next analysers, or zero if it either needs more
1970 * data or wants to immediately abort the request (eg: timeout, error, ...). It
1971 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
1972 * when it has nothing left to do, and may remove any analyser when it wants to
1973 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1974 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1975int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1976{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1977 /*
1978 * We will parse the partial (or complete) lines.
1979 * We will check the request syntax, and also join multi-line
1980 * headers. An index of all the lines will be elaborated while
1981 * parsing.
1982 *
1983 * For the parsing, we use a 28 states FSM.
1984 *
1985 * Here is the information we currently have :
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]1986 * req->buf.p = beginning of request
1987 * req->buf.p + msg->eoh = end of processed headers / start of current one
1988 * req->buf.p + req->buf.i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1989 * msg->eol = end of current header or line (LF or CRLF)
1990 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1991 *
1992 * At end of parsing, we may perform a capture of the error (if any), and
1993 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
1994 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
1995 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1996 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1997
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1998 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]1999 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2000 struct http_txn *txn = &s->txn;
2001 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2002 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2003
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2004 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]2005 now_ms, __FUNCTION__,
2006 s,
2007 req,
2008 req->rex, req->wex,
2009 req->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2010 req->buf.i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2011 req->analysers);
2012
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2013 /* we're speaking HTTP here, so let's speak HTTP to the client */
2014 s->srv_error = http_return_srv_error;
2015
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2016 /* There's a protected area at the end of the buffer for rewriting
2017 * purposes. We don't want to start to parse the request if the
2018 * protected area is affected, because we may have to move processed
2019 * data later, which is much more complicated.
2020 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2021 if (buffer_not_empty(&req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2022 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2023 unlikely(channel_full(req) ||
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2024 bi_end(&req->buf) < b_ptr(&req->buf, msg->next) ||
2025 bi_end(&req->buf) > req->buf.data + req->buf.size - global.tune.maxrewrite)) {
2026 if (req->buf.o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2027 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2028 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2029 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2030 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2031 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2032 return 0;
2033 }
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2034 if (bi_end(&req->buf) < b_ptr(&req->buf, msg->next) ||
2035 bi_end(&req->buf) > req->buf.data + req->buf.size - global.tune.maxrewrite)
2036 buffer_slow_realign(&msg->buf->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2037 }
2038
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2039 /* Note that we have the same problem with the response ; we
2040 * may want to send a redirect, error or anything which requires
2041 * some spare space. So we'll ensure that we have at least
2042 * maxrewrite bytes available in the response buffer before
2043 * processing that one. This will only affect pipelined
2044 * keep-alive requests.
2045 */
2046 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2047 unlikely(channel_full(s->rep) ||
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2048 bi_end(&s->rep->buf) < b_ptr(&s->rep->buf, txn->rsp.next) ||
2049 bi_end(&s->rep->buf) > s->rep->buf.data + s->rep->buf.size - global.tune.maxrewrite)) {
2050 if (s->rep->buf.o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2051 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]2052 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2053 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2054 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2055 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2056 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2057 return 0;
2058 }
2059 }
2060
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2061 if (likely(msg->next < req->buf.i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2062 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2063 }
2064
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2065 /* 1: we might have to print this header in debug mode */
2066 if (unlikely((global.mode & MODE_DEBUG) &&
2067 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2068 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2069 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2070
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2071 sol = req->buf.p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2072 /* this is a bit complex : in case of error on the request line,
2073 * we know that rq.l is still zero, so we display only the part
2074 * up to the end of the line (truncated by debug_hdr).
2075 */
2076 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf.i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2077 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2078
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2079 sol += hdr_idx_first_pos(&txn->hdr_idx);
2080 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2081
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2082 while (cur_idx) {
2083 eol = sol + txn->hdr_idx.v[cur_idx].len;
2084 debug_hdr("clihdr", s, sol, eol);
2085 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2086 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2087 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2088 }
2089
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2090
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2091 /*
2092 * Now we quickly check if we have found a full valid request.
2093 * If not so, we check the FD and buffer states before leaving.
2094 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2095 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2096 * requests are checked first. When waiting for a second request
2097 * on a keep-alive session, if we encounter and error, close, t/o,
2098 * we note the error in the session flags but don't set any state.
2099 * Since the error will be noted there, it will not be counted by
2100 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2101 * Last, we may increase some tracked counters' http request errors on
2102 * the cases that are deliberately the client's fault. For instance,
2103 * a timeout or connection reset is not counted as an error. However
2104 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2105 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2106
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2107 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2108 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2109 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2110 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2111 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2112 session_inc_http_req_ctr(s);
2113 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2114 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2115 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2116 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2117
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2118 /* 1: Since we are in header mode, if there's no space
2119 * left for headers, we won't be able to free more
2120 * later, so the session will never terminate. We
2121 * must terminate it now.
2122 */
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2123 if (unlikely(buffer_full(&req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2124 /* FIXME: check if URI is set and return Status
2125 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2126 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2127 session_inc_http_req_ctr(s);
2128 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2129 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2130 if (msg->err_pos < 0)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2131 msg->err_pos = req->buf.i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2132 goto return_bad_req;
2133 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2134
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2135 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2136 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2137 if (!(s->flags & SN_ERR_MASK))
2138 s->flags |= SN_ERR_CLICL;
2139
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2140 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2141 goto failed_keep_alive;
2142
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2143 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2144 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2145 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]2146 session_inc_http_err_ctr(s);
2147 }
2148
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2149 msg->msg_state = HTTP_MSG_ERROR;
2150 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2151
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2152 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2153 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2154 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2155 if (s->listener->counters)
2156 s->listener->counters->failed_req++;
2157
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2158 if (!(s->flags & SN_FINST_MASK))
2159 s->flags |= SN_FINST_R;
2160 return 0;
2161 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2162
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2163 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2164 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]2165 if (!(s->flags & SN_ERR_MASK))
2166 s->flags |= SN_ERR_CLITO;
2167
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2168 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2169 goto failed_keep_alive;
2170
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2171 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2172 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2173 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]2174 session_inc_http_err_ctr(s);
2175 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2176 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2177 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2178 msg->msg_state = HTTP_MSG_ERROR;
2179 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2180
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2181 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2182 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2183 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2184 if (s->listener->counters)
2185 s->listener->counters->failed_req++;
2186
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2187 if (!(s->flags & SN_FINST_MASK))
2188 s->flags |= SN_FINST_R;
2189 return 0;
2190 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2191
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2192 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2193 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2194 if (!(s->flags & SN_ERR_MASK))
2195 s->flags |= SN_ERR_CLICL;
2196
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2197 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2198 goto failed_keep_alive;
2199
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2200 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2201 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]2202 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2203 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2204 msg->msg_state = HTTP_MSG_ERROR;
2205 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2206
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2207 session_inc_http_err_ctr(s);
2208 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2209 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2210 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2211 if (s->listener->counters)
2212 s->listener->counters->failed_req++;
2213
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2214 if (!(s->flags & SN_FINST_MASK))
2215 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2216 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2217 }
2218
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2219 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2220 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2221 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2222#ifdef TCP_QUICKACK
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2223 if (s->listener->options & LI_O_NOQUICKACK && req->buf.i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2224 /* We need more data, we have to re-enable quick-ack in case we
2225 * previously disabled it, otherwise we might cause the client
2226 * to delay next data.
2227 */
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]2228 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2229 }
2230#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2231
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2232 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2233 /* If the client starts to talk, let's fall back to
2234 * request timeout processing.
2235 */
2236 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2237 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2238 }
2239
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2240 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2241 if (!tick_isset(req->analyse_exp)) {
2242 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2243 (txn->flags & TX_WAIT_NEXT_RQ) &&
2244 tick_isset(s->be->timeout.httpka))
2245 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2246 else
2247 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2248 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2249
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2250 /* we're not ready yet */
2251 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2252
2253 failed_keep_alive:
2254 /* Here we process low-level errors for keep-alive requests. In
2255 * short, if the request is not the first one and it experiences
2256 * a timeout, read error or shutdown, we just silently close so
2257 * that the client can try again.
2258 */
2259 txn->status = 0;
2260 msg->msg_state = HTTP_MSG_RQBEFORE;
2261 req->analysers = 0;
2262 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2263 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2264 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2265 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2266 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2267
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2268 /* OK now we have a complete HTTP request with indexed headers. Let's
2269 * complete the request parsing by setting a few fields we will need
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2270 * 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]2271 * 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]2272 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2273 * byte after the last LF. msg->sov points to the first byte of data.
2274 * msg->eol cannot be trusted because it may have been left uninitialized
2275 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2276 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2277
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2278 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2279 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2280
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2281 if (txn->flags & TX_WAIT_NEXT_RQ) {
2282 /* kill the pending keep-alive timeout */
2283 txn->flags &= ~TX_WAIT_NEXT_RQ;
2284 req->analyse_exp = TICK_ETERNITY;
2285 }
2286
2287
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2288 /* Maybe we found in invalid header name while we were configured not
2289 * to block on that, so we have to capture it now.
2290 */
2291 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2292 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]2293
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2294 /*
2295 * 1: identify the method
2296 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2297 txn->meth = find_http_meth(req->buf.p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2298
2299 /* we can make use of server redirect on GET and HEAD */
2300 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2301 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2302
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2303 /*
2304 * 2: check if the URI matches the monitor_uri.
2305 * We have to do this for every request which gets in, because
2306 * the monitor-uri is defined by the frontend.
2307 */
2308 if (unlikely((s->fe->monitor_uri_len != 0) &&
2309 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2310 !memcmp(req->buf.p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2311 s->fe->monitor_uri,
2312 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2313 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2314 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2315 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2316 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2317
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2318 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2319 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2320
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2321 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2322 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2323 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]2324
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2325 ret = acl_pass(ret);
2326 if (cond->pol == ACL_COND_UNLESS)
2327 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2328
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2329 if (ret) {
2330 /* we fail this request, let's return 503 service unavail */
2331 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2332 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2333 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2334 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2335 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2336
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2337 /* nothing to fail, let's reply normaly */
2338 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2339 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2340 goto return_prx_cond;
2341 }
2342
2343 /*
2344 * 3: Maybe we have to copy the original REQURI for the logs ?
2345 * Note: we cannot log anymore if the request has been
2346 * classified as invalid.
2347 */
2348 if (unlikely(s->logs.logwait & LW_REQ)) {
2349 /* we have a complete HTTP request that we must log */
2350 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2351 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2352
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 if (urilen >= REQURI_LEN)
2354 urilen = REQURI_LEN - 1;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2355 memcpy(txn->uri, req->buf.p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2356 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2357
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2358 if (!(s->logs.logwait &= ~LW_REQ))
2359 s->do_log(s);
2360 } else {
2361 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2362 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2363 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2364
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2365 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2366 s->unique_id = pool_alloc2(pool2_uniqueid);
2367 }
2368
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2369 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2370 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2371 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2372
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2373 /* ... and check if the request is HTTP/1.1 or above */
2374 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2375 ((req->buf.p[msg->sl.rq.v + 5] > '1') ||
2376 ((req->buf.p[msg->sl.rq.v + 5] == '1') &&
2377 (req->buf.p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2378 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2379
2380 /* "connection" has not been parsed yet */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2381 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2382
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2383 /* if the frontend has "option http-use-proxy-header", we'll check if
2384 * we have what looks like a proxied connection instead of a connection,
2385 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2386 * Note that this is *not* RFC-compliant, however browsers and proxies
2387 * happen to do that despite being non-standard :-(
2388 * We consider that a request not beginning with either '/' or '*' is
2389 * a proxied connection, which covers both "scheme://location" and
2390 * CONNECT ip:port.
2391 */
2392 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2393 req->buf.p[msg->sl.rq.u] != '/' && req->buf.p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2394 txn->flags |= TX_USE_PX_CONN;
2395
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2396 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2397 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2398
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2399 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2400 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2401 capture_headers(req->buf.p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2402 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2403
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2404 /* 6: determine the transfer-length.
2405 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2406 * the presence of a message-body in a REQUEST and its transfer length
2407 * must be determined that way (in order of precedence) :
2408 * 1. The presence of a message-body in a request is signaled by the
2409 * inclusion of a Content-Length or Transfer-Encoding header field
2410 * in the request's header fields. When a request message contains
2411 * both a message-body of non-zero length and a method that does
2412 * not define any semantics for that request message-body, then an
2413 * origin server SHOULD either ignore the message-body or respond
2414 * with an appropriate error message (e.g., 413). A proxy or
2415 * gateway, when presented the same request, SHOULD either forward
2416 * the request inbound with the message- body or ignore the
2417 * message-body when determining a response.
2418 *
2419 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2420 * and the "chunked" transfer-coding (Section 6.2) is used, the
2421 * transfer-length is defined by the use of this transfer-coding.
2422 * If a Transfer-Encoding header field is present and the "chunked"
2423 * transfer-coding is not present, the transfer-length is defined
2424 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2425 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2426 * 3. If a Content-Length header field is present, its decimal value in
2427 * OCTETs represents both the entity-length and the transfer-length.
2428 * If a message is received with both a Transfer-Encoding header
2429 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2430 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2431 * 4. By the server closing the connection. (Closing the connection
2432 * cannot be used to indicate the end of a request body, since that
2433 * would leave no possibility for the server to send back a response.)
2434 *
2435 * Whenever a transfer-coding is applied to a message-body, the set of
2436 * transfer-codings MUST include "chunked", unless the message indicates
2437 * it is terminated by closing the connection. When the "chunked"
2438 * transfer-coding is used, it MUST be the last transfer-coding applied
2439 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2440 */
2441
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2442 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2443 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2444 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2445 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2446 http_find_header2("Transfer-Encoding", 17, req->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2447 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2448 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2449 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2450 /* bad transfer-encoding (chunked followed by something else) */
2451 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2452 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2453 break;
2454 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2455 }
2456
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2457 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2458 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2459 http_find_header2("Content-Length", 14, req->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2460 signed long long cl;
2461
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2462 if (!ctx.vlen) {
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;
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 (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
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; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2470 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2471
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2472 if (cl < 0) {
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;
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 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2478 msg->err_pos = ctx.line + ctx.val - req->buf.p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2479 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2480 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2481
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2482 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2483 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2484 }
2485
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2486 /* bodyless requests have a known length */
2487 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2488 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2489
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2490 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2491 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2492 req->analyse_exp = TICK_ETERNITY;
2493 return 1;
2494
2495 return_bad_req:
2496 /* We centralize bad requests processing here */
2497 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2498 /* we detected a parsing error. We want to archive this request
2499 * in the dedicated proxy area for later troubleshooting.
2500 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2501 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]2502 }
2503
2504 txn->req.msg_state = HTTP_MSG_ERROR;
2505 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2506 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2507
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2508 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2509 if (s->listener->counters)
2510 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2511
2512 return_prx_cond:
2513 if (!(s->flags & SN_ERR_MASK))
2514 s->flags |= SN_ERR_PRXCOND;
2515 if (!(s->flags & SN_FINST_MASK))
2516 s->flags |= SN_FINST_R;
2517
2518 req->analysers = 0;
2519 req->analyse_exp = TICK_ETERNITY;
2520 return 0;
2521}
2522
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2523/* We reached the stats page through a POST request.
2524 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2525 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2526 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2527int 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]2528{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2529 struct proxy *px = NULL;
2530 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2531
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2532 char key[LINESIZE];
2533 int action = ST_ADM_ACTION_NONE;
2534 int reprocess = 0;
2535
2536 int total_servers = 0;
2537 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2538
2539 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2540 char *st_cur_param = NULL;
2541 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2542
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2543 first_param = req->buf.p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2544 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2545
2546 cur_param = next_param = end_params;
2547
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2548 if (end_params >= req->buf.data + req->buf.size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2549 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2550 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2551 return 1;
2552 }
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2553 else if (end_params > req->buf.p + req->buf.i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2554 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2555 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2556 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2557 }
2558
2559 *end_params = '\0';
2560
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2561 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2562
2563 /*
2564 * Parse the parameters in reverse order to only store the last value.
2565 * From the html form, the backend and the action are at the end.
2566 */
2567 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2568 char *value;
2569 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2570
2571 cur_param--;
2572 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2573 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2574 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2575 poffset = (cur_param != first_param ? 1 : 0);
2576 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2577 if ((plen > 0) && (plen <= sizeof(key))) {
2578 strncpy(key, cur_param + poffset, plen);
2579 key[plen - 1] = '\0';
2580 } else {
2581 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2582 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2583 }
2584
2585 /* Parse the value */
2586 value = key;
2587 while (*value != '\0' && *value != '=') {
2588 value++;
2589 }
2590 if (*value == '=') {
2591 /* Ok, a value is found, we can mark the end of the key */
2592 *value++ = '\0';
2593 }
2594
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2595 if (!url_decode(key) || !url_decode(value))
2596 break;
2597
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2598 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2599 if (!px && (strcmp(key, "b") == 0)) {
2600 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2601 /* the backend name is unknown or ambiguous (duplicate names) */
2602 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2603 goto out;
2604 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2605 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2606 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2607 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2608 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2609 }
2610 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2611 action = ST_ADM_ACTION_ENABLE;
2612 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2613 else if (strcmp(value, "stop") == 0) {
2614 action = ST_ADM_ACTION_STOP;
2615 }
2616 else if (strcmp(value, "start") == 0) {
2617 action = ST_ADM_ACTION_START;
2618 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2619 else if (strcmp(value, "shutdown") == 0) {
2620 action = ST_ADM_ACTION_SHUTDOWN;
2621 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2622 else {
2623 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2624 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2625 }
2626 }
2627 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2628 if (!(px && action)) {
2629 /*
2630 * Indicates that we'll need to reprocess the parameters
2631 * as soon as backend and action are known
2632 */
2633 if (!reprocess) {
2634 st_cur_param = cur_param;
2635 st_next_param = next_param;
2636 }
2637 reprocess = 1;
2638 }
2639 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2640 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2641 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2642 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2643 /* Not already in maintenance, we can change the server state */
2644 sv->state |= SRV_MAINTAIN;
2645 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2646 altered_servers++;
2647 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2648 }
2649 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2650 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2651 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2652 /* Already in maintenance, we can change the server state */
2653 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2654 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2655 altered_servers++;
2656 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2657 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2658 break;
2659 case ST_ADM_ACTION_STOP:
2660 case ST_ADM_ACTION_START:
2661 if (action == ST_ADM_ACTION_START)
2662 sv->uweight = sv->iweight;
2663 else
2664 sv->uweight = 0;
2665
2666 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2667 /* we must take care of not pushing the server to full throttle during slow starts */
2668 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2669 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2670 else
2671 sv->eweight = BE_WEIGHT_SCALE;
2672 sv->eweight *= sv->uweight;
2673 } else {
2674 sv->eweight = sv->uweight;
2675 }
2676
2677 /* static LB algorithms are a bit harder to update */
2678 if (px->lbprm.update_server_eweight)
2679 px->lbprm.update_server_eweight(sv);
2680 else if (sv->eweight) {
2681 if (px->lbprm.set_server_status_up)
2682 px->lbprm.set_server_status_up(sv);
2683 }
2684 else {
2685 if (px->lbprm.set_server_status_down)
2686 px->lbprm.set_server_status_down(sv);
2687 }
2688 altered_servers++;
2689 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2690 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2691 case ST_ADM_ACTION_SHUTDOWN:
2692 if (px->state != PR_STSTOPPED) {
2693 struct session *sess, *sess_bck;
2694
2695 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2696 if (sess->srv_conn == sv)
2697 session_shutdown(sess, SN_ERR_KILLED);
2698
2699 altered_servers++;
2700 total_servers++;
2701 }
2702 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2703 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2704 } else {
2705 /* the server name is unknown or ambiguous (duplicate names) */
2706 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2707 }
2708 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2709 if (reprocess && px && action) {
2710 /* Now, we know the backend and the action chosen by the user.
2711 * We can safely restart from the first server parameter
2712 * to reprocess them
2713 */
2714 cur_param = st_cur_param;
2715 next_param = st_next_param;
2716 reprocess = 0;
2717 goto reprocess_servers;
2718 }
2719
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2720 next_param = cur_param;
2721 }
2722 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2723
2724 if (total_servers == 0) {
2725 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2726 }
2727 else if (altered_servers == 0) {
2728 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2729 }
2730 else if (altered_servers == total_servers) {
2731 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2732 }
2733 else {
2734 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2735 }
2736 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2737 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2738}
2739
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2740/* returns a pointer to the first rule which forbids access (deny or http_auth),
2741 * or NULL if everything's OK.
2742 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2743static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2744http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2745{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2746 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2747
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2748 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2749 int ret = 1;
2750
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2751 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2752 continue;
2753
2754 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2755 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2756 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]2757 ret = acl_pass(ret);
2758
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2759 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2760 ret = !ret;
2761 }
2762
2763 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2764 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2765 return NULL; /* no problem */
2766 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2767 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2768 }
2769 }
2770 return NULL;
2771}
2772
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2773/* This stream analyser runs all HTTP request processing which is common to
2774 * frontends and backends, which means blocking ACLs, filters, connection-close,
2775 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2776 * 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]2777 * either needs more data or wants to immediately abort the request (eg: deny,
2778 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2779 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2780int 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]2781{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2782 struct http_txn *txn = &s->txn;
2783 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2784 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2785 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2786 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2787 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2788 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2789
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2790 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2791 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2792 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2793 return 0;
2794 }
2795
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2796 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2797 req->analyse_exp = TICK_ETERNITY;
2798
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2799 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]2800 now_ms, __FUNCTION__,
2801 s,
2802 req,
2803 req->rex, req->wex,
2804 req->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]2805 req->buf.i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2806 req->analysers);
2807
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2808 /* first check whether we have some ACLs set to block this request */
2809 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2810 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]2811
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2812 ret = acl_pass(ret);
2813 if (cond->pol == ACL_COND_UNLESS)
2814 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2815
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2816 if (ret) {
2817 txn->status = 403;
2818 /* let's log the request time */
2819 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2820 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2821 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2822 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2823 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2824 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2825
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2826 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2827 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]2828
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2829 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2830 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2831 do_stats = stats_check_uri(s->rep->prod, txn, px);
2832 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2833 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]2834 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2835 else
2836 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2837
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2838 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2839 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]2840 txn->status = 403;
2841 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2842 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2843 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]2844 s->fe->fe_counters.denied_req++;
2845 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
2846 s->be->be_counters.denied_req++;
2847 if (s->listener->counters)
2848 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2849 goto return_prx_cond;
2850 }
2851
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2852 /* try headers filters */
2853 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]2854 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2855 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2856
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2857 /* has the request been denied ? */
2858 if (txn->flags & TX_CLDENY) {
2859 /* no need to go further */
2860 txn->status = 403;
2861 /* let's log the request time */
2862 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2863 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2864 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2865 goto return_prx_cond;
2866 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2867
2868 /* When a connection is tarpitted, we use the tarpit timeout,
2869 * which may be the same as the connect timeout if unspecified.
2870 * If unset, then set it to zero because we really want it to
2871 * eventually expire. We build the tarpit as an analyser.
2872 */
2873 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2874 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2875 /* wipe the request out so that we can drop the connection early
2876 * if the client closes first.
2877 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2878 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2879 req->analysers = 0; /* remove switching rules etc... */
2880 req->analysers |= AN_REQ_HTTP_TARPIT;
2881 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2882 if (!req->analyse_exp)
2883 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2884 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2885 return 1;
2886 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2887 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2888
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2889 /* Until set to anything else, the connection mode is set as TUNNEL. It will
2890 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2891 * Option httpclose by itself does not set a mode, it remains a tunnel mode
2892 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2893 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
2894 * avoid to redo the same work if FE and BE have the same settings (common).
2895 * The method consists in checking if options changed between the two calls
2896 * (implying that either one is non-null, or one of them is non-null and we
2897 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2898 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2899
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]2900 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
2901 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
2902 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
2903 (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]2904 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2905
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]2906 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
2907 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2908 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2909 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
2910 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2911 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2912 tmp = TX_CON_WANT_CLO;
2913
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2914 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2915 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2916
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2917 if (!(txn->flags & TX_HDR_CONN_PRS)) {
2918 /* parse the Connection header and possibly clean it */
2919 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2920 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]2921 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2922 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2923 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2924 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2925 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2926 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2927 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2928
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2929 /* check if client or config asks for explicit close in KAL/SCL */
2930 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2931 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2932 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2933 (!(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]2934 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2935 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]2936 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2937 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2938 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2939
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2940 /* we can be blocked here because the request needs to be authenticated,
2941 * either to pass or to access stats.
2942 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2943 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]2944 struct chunk msg;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2945 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2946
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2947 if (!realm)
2948 realm = do_stats?STATS_DEFAULT_REALM:px->id;
2949
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]2950 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]2951 chunk_initlen(&msg, trash, trashlen, strlen(trash));
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2952 txn->status = 401;
2953 stream_int_retnclose(req->prod, &msg);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2954 /* on 401 we still count one error, because normal browsing
2955 * won't significantly increase the counter but brute force
2956 * attempts will.
2957 */
2958 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2959 goto return_prx_cond;
2960 }
2961
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2962 /* add request headers from the rule sets in the same order */
2963 list_for_each_entry(wl, &px->req_add, list) {
2964 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2965 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]2966 ret = acl_pass(ret);
2967 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
2968 ret = !ret;
2969 if (!ret)
2970 continue;
2971 }
2972
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2973 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2974 goto return_bad_req;
2975 }
2976
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2977 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2978 struct stats_admin_rule *stats_admin_rule;
2979
2980 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2981 * FIXME!!! that one is rather dangerous, we want to
2982 * make it follow standard rules (eg: clear req->analysers).
2983 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2984
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2985 /* now check whether we have some admin rules for this request */
2986 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2987 int ret = 1;
2988
2989 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2990 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]2991 ret = acl_pass(ret);
2992 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2993 ret = !ret;
2994 }
2995
2996 if (ret) {
2997 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2998 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2999 break;
3000 }
3001 }
3002
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3003 /* Was the status page requested with a POST ? */
3004 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3005 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3006 if (msg->msg_state < HTTP_MSG_100_SENT) {
3007 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3008 * send an HTTP/1.1 100 Continue intermediate response.
3009 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3010 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3011 struct hdr_ctx ctx;
3012 ctx.idx = 0;
3013 /* Expect is allowed in 1.1, look for it */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3014 if (http_find_header2("Expect", 6, req->buf.p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3015 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3016 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3017 }
3018 }
3019 msg->msg_state = HTTP_MSG_100_SENT;
3020 s->logs.tv_request = now; /* update the request timer to reflect full request */
3021 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3022 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3023 /* we need more data */
3024 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3025 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3026 return 0;
3027 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3028 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3029 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3030 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3031 }
3032
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3033 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3034 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3035 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3cefd522012-08-30 15:49:18 +0200[diff] [blame]3036 copy_target(&s->target, &s->rep->prod->conn.target); // for logging only
Willy Tarreauf7bc57c2012-10-03 00:19:48 +0200[diff] [blame]3037 s->rep->prod->conn.xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3038 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3039 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3040 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3041 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3042
3043 return 0;
3044
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3045 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3046
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3047 /* check whether we have some ACLs set to redirect this request */
3048 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3049 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3050
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3051 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3052 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]3053 ret = acl_pass(ret);
3054 if (rule->cond->pol == ACL_COND_UNLESS)
3055 ret = !ret;
3056 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3057
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3058 if (ret) {
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]3059 struct chunk rdr = { .str = trash, .size = trashlen, .len = 0 };
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3060 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3061
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3062 /* build redirect message */
3063 switch(rule->code) {
3064 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3065 msg_fmt = HTTP_303;
3066 break;
3067 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3068 msg_fmt = HTTP_301;
3069 break;
3070 case 302:
3071 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3072 msg_fmt = HTTP_302;
3073 break;
3074 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3075
Willy Tarreau3bb9c232010-01-03 12:24:37 +0100[diff] [blame]3076 if (unlikely(!chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3077 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3078
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3079 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3080 case REDIRECT_TYPE_SCHEME: {
3081 const char *path;
3082 const char *host;
3083 struct hdr_ctx ctx;
3084 int pathlen;
3085 int hostlen;
3086
3087 host = "";
3088 hostlen = 0;
3089 ctx.idx = 0;
3090 if (http_find_header2("Host", 4, txn->req.buf->buf.p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3091 host = ctx.line + ctx.val;
3092 hostlen = ctx.vlen;
3093 }
3094
3095 path = http_get_path(txn);
3096 /* build message using path */
3097 if (path) {
3098 pathlen = txn->req.sl.rq.u_l + (req->buf.p + txn->req.sl.rq.u) - path;
3099 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3100 int qs = 0;
3101 while (qs < pathlen) {
3102 if (path[qs] == '?') {
3103 pathlen = qs;
3104 break;
3105 }
3106 qs++;
3107 }
3108 }
3109 } else {
3110 path = "/";
3111 pathlen = 1;
3112 }
3113
3114 /* check if we can add scheme + "://" + host + path */
3115 if (rdr.len + rule->rdr_len + 3 + hostlen + pathlen > rdr.size - 4)
3116 goto return_bad_req;
3117
3118 /* add scheme */
3119 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3120 rdr.len += rule->rdr_len;
3121
3122 /* add "://" */
3123 memcpy(rdr.str + rdr.len, "://", 3);
3124 rdr.len += 3;
3125
3126 /* add host */
3127 memcpy(rdr.str + rdr.len, host, hostlen);
3128 rdr.len += hostlen;
3129
3130 /* add path */
3131 memcpy(rdr.str + rdr.len, path, pathlen);
3132 rdr.len += pathlen;
3133
3134 /* append a slash at the end of the location is needed and missing */
3135 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3136 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3137 if (rdr.len > rdr.size - 5)
3138 goto return_bad_req;
3139 rdr.str[rdr.len] = '/';
3140 rdr.len++;
3141 }
3142
3143 break;
3144 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3145 case REDIRECT_TYPE_PREFIX: {
3146 const char *path;
3147 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3148
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3149 path = http_get_path(txn);
3150 /* build message using path */
3151 if (path) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3152 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]3153 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3154 int qs = 0;
3155 while (qs < pathlen) {
3156 if (path[qs] == '?') {
3157 pathlen = qs;
3158 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3159 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3160 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3161 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3162 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3163 } else {
3164 path = "/";
3165 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3166 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3167
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3168 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3169 goto return_bad_req;
3170
3171 /* add prefix. Note that if prefix == "/", we don't want to
3172 * add anything, otherwise it makes it hard for the user to
3173 * configure a self-redirection.
3174 */
3175 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3176 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3177 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3178 }
3179
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3180 /* add path */
3181 memcpy(rdr.str + rdr.len, path, pathlen);
3182 rdr.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3183
3184 /* append a slash at the end of the location is needed and missing */
3185 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3186 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3187 if (rdr.len > rdr.size - 5)
3188 goto return_bad_req;
3189 rdr.str[rdr.len] = '/';
3190 rdr.len++;
3191 }
3192
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3193 break;
3194 }
3195 case REDIRECT_TYPE_LOCATION:
3196 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3197 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3198 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3199
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3200 /* add location */
3201 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3202 rdr.len += rule->rdr_len;
3203 break;
3204 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3205
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3206 if (rule->cookie_len) {
3207 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
3208 rdr.len += 14;
3209 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
3210 rdr.len += rule->cookie_len;
3211 memcpy(rdr.str + rdr.len, "\r\n", 2);
3212 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3213 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3214
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3215 /* add end of headers and the keep-alive/close status.
3216 * We may choose to set keep-alive if the Location begins
3217 * with a slash, because the client will come back to the
3218 * same server.
3219 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3220 txn->status = rule->code;
3221 /* let's log the request time */
3222 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3223
3224 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3225 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3226 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3227 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3228 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3229 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3230 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3231 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3232 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: keep-alive", 30);
3233 rdr.len += 30;
3234 } else {
3235 memcpy(rdr.str + rdr.len, "\r\nConnection: keep-alive", 24);
3236 rdr.len += 24;
3237 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3238 }
3239 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
3240 rdr.len += 4;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3241 bo_inject(req->prod->ob, rdr.str, rdr.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3242 /* "eat" the request */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3243 bi_fast_delete(&req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3244 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3245 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3246 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3247 txn->req.msg_state = HTTP_MSG_CLOSED;
3248 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3249 break;
3250 } else {
3251 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3252 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3253 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3254 rdr.len += 29;
3255 } else {
3256 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
3257 rdr.len += 23;
3258 }
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]3259 stream_int_retnclose(req->prod, &rdr);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3260 goto return_prx_cond;
3261 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3262 }
3263 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3264
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3265 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3266 * If this happens, then the data will not come immediately, so we must
3267 * send all what we have without waiting. Note that due to the small gain
3268 * 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]3269 * 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]3270 * itself once used.
3271 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3272 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3273
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3274 /* that's OK for us now, let's move on to next analysers */
3275 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3276
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3277 return_bad_req:
3278 /* We centralize bad requests processing here */
3279 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3280 /* we detected a parsing error. We want to archive this request
3281 * in the dedicated proxy area for later troubleshooting.
3282 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3283 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]3284 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3285
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3286 txn->req.msg_state = HTTP_MSG_ERROR;
3287 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3288 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3289
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3290 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3291 if (s->listener->counters)
3292 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3293
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3294 return_prx_cond:
3295 if (!(s->flags & SN_ERR_MASK))
3296 s->flags |= SN_ERR_PRXCOND;
3297 if (!(s->flags & SN_FINST_MASK))
3298 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3299
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3300 req->analysers = 0;
3301 req->analyse_exp = TICK_ETERNITY;
3302 return 0;
3303}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3304
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3305/* This function performs all the processing enabled for the current request.
3306 * It returns 1 if the processing can continue on next analysers, or zero if it
3307 * needs more data, encounters an error, or wants to immediately abort the
3308 * request. It relies on buffers flags, and updates s->req->analysers.
3309 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3310int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3311{
3312 struct http_txn *txn = &s->txn;
3313 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3314
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3315 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3316 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3317 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3318 return 0;
3319 }
3320
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3321 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]3322 now_ms, __FUNCTION__,
3323 s,
3324 req,
3325 req->rex, req->wex,
3326 req->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3327 req->buf.i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3328 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3329
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3330 /*
3331 * Right now, we know that we have processed the entire headers
3332 * and that unwanted requests have been filtered out. We can do
3333 * whatever we want with the remaining request. Also, now we
3334 * may have separate values for ->fe, ->be.
3335 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3336
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3337 /*
3338 * If HTTP PROXY is set we simply get remote server address
3339 * parsing incoming request.
3340 */
3341 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3342 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]3343 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3345 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3346 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3347 * Note that doing so might move headers in the request, but
3348 * the fields will stay coherent and the URI will not move.
3349 * This should only be performed in the backend.
3350 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3351 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3352 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3353 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3354
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3355 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3356 * 8: the appsession cookie was looked up very early in 1.2,
3357 * so let's do the same now.
3358 */
3359
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3360 /* It needs to look into the URI unless persistence must be ignored */
3361 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3362 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]3363 }
3364
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3365 /* add unique-id if "header-unique-id" is specified */
3366
3367 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3368 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3369
3370 if (s->fe->header_unique_id && s->unique_id) {
3371 int ret = snprintf(trash, global.tune.bufsize, "%s: %s", s->fe->header_unique_id, s->unique_id);
3372 if (ret < 0 || ret > global.tune.bufsize)
3373 goto return_bad_req;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3374 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, trash) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3375 goto return_bad_req;
3376 }
3377
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3378 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3379 * 9: add X-Forwarded-For if either the frontend or the backend
3380 * asks for it.
3381 */
3382 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3383 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3384 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3385 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3386 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]3387 req->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3388 /* The header is set to be added only if none is present
3389 * and we found it, so don't do anything.
3390 */
3391 }
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3392 else if (s->req->prod->conn.addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3393 /* Add an X-Forwarded-For header unless the source IP is
3394 * in the 'except' network range.
3395 */
3396 if ((!s->fe->except_mask.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3397 (((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]3398 != s->fe->except_net.s_addr) &&
3399 (!s->be->except_mask.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3400 (((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]3401 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3402 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3403 unsigned char *pn;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3404 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn.addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3405
3406 /* Note: we rely on the backend to get the header name to be used for
3407 * x-forwarded-for, because the header is really meant for the backends.
3408 * However, if the backend did not specify any option, we have to rely
3409 * on the frontend's header name.
3410 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3411 if (s->be->fwdfor_hdr_len) {
3412 len = s->be->fwdfor_hdr_len;
3413 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3414 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3415 len = s->fe->fwdfor_hdr_len;
3416 memcpy(trash, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3417 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3418 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]3419
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3420 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3421 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3422 }
3423 }
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3424 else if (s->req->prod->conn.addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3425 /* FIXME: for the sake of completeness, we should also support
3426 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3427 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3428 int len;
3429 char pn[INET6_ADDRSTRLEN];
3430 inet_ntop(AF_INET6,
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3431 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn.addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3432 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3433
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3434 /* Note: we rely on the backend to get the header name to be used for
3435 * x-forwarded-for, because the header is really meant for the backends.
3436 * However, if the backend did not specify any option, we have to rely
3437 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3438 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3439 if (s->be->fwdfor_hdr_len) {
3440 len = s->be->fwdfor_hdr_len;
3441 memcpy(trash, s->be->fwdfor_hdr_name, len);
3442 } else {
3443 len = s->fe->fwdfor_hdr_len;
3444 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3445 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3446 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3447
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3448 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3449 goto return_bad_req;
3450 }
3451 }
3452
3453 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3454 * 10: add X-Original-To if either the frontend or the backend
3455 * asks for it.
3456 */
3457 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3458
3459 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3460 if (s->req->prod->conn.addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3461 /* Add an X-Original-To header unless the destination IP is
3462 * in the 'except' network range.
3463 */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3464 conn_get_to_addr(&s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3465
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3466 if (s->req->prod->conn.addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3467 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3468 (((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]3469 != s->fe->except_to.s_addr) &&
3470 (!s->be->except_mask_to.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3471 (((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]3472 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3473 int len;
3474 unsigned char *pn;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3475 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn.addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3476
3477 /* Note: we rely on the backend to get the header name to be used for
3478 * x-original-to, because the header is really meant for the backends.
3479 * However, if the backend did not specify any option, we have to rely
3480 * on the frontend's header name.
3481 */
3482 if (s->be->orgto_hdr_len) {
3483 len = s->be->orgto_hdr_len;
3484 memcpy(trash, s->be->orgto_hdr_name, len);
3485 } else {
3486 len = s->fe->orgto_hdr_len;
3487 memcpy(trash, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3488 }
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3489 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
3490
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3491 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3492 goto return_bad_req;
3493 }
3494 }
3495 }
3496
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3497 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set. */
3498 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3499 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3500 unsigned int want_flags = 0;
3501
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3502 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3503 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
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_CLO_SET;
3507 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3508 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3509 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3510 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3511 want_flags |= TX_CON_KAL_SET;
3512 }
3513
3514 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3515 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3516 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3517
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3518
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3519 /* If we have no server assigned yet and we're balancing on url_param
3520 * with a POST request, we may be interested in checking the body for
3521 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3522 */
3523 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3524 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3525 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3526 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3527 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3528 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3529 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3530
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3531 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3532 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3533#ifdef TCP_QUICKACK
3534 /* We expect some data from the client. Unless we know for sure
3535 * we already have a full request, we have to re-enable quick-ack
3536 * in case we previously disabled it, otherwise we might cause
3537 * the client to delay further data.
3538 */
3539 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3540 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3541 (msg->body_len > req->buf.i - txn->req.eoh - 2)))
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3542 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3543#endif
3544 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3545
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3546 /*************************************************************
3547 * OK, that's finished for the headers. We have done what we *
3548 * could. Let's switch to the DATA state. *
3549 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3550 req->analyse_exp = TICK_ETERNITY;
3551 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3552
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3553 /* if the server closes the connection, we want to immediately react
3554 * and close the socket to save packets and syscalls.
3555 */
3556 req->cons->flags |= SI_FL_NOHALF;
3557
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3558 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3559 /* OK let's go on with the BODY now */
3560 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3561
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3562 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3563 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3564 /* we detected a parsing error. We want to archive this request
3565 * in the dedicated proxy area for later troubleshooting.
3566 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3567 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]3568 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3569
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3570 txn->req.msg_state = HTTP_MSG_ERROR;
3571 txn->status = 400;
3572 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3573 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3574
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3575 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3576 if (s->listener->counters)
3577 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3578
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3579 if (!(s->flags & SN_ERR_MASK))
3580 s->flags |= SN_ERR_PRXCOND;
3581 if (!(s->flags & SN_FINST_MASK))
3582 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3583 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3584}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3585
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3586/* This function is an analyser which processes the HTTP tarpit. It always
3587 * returns zero, at the beginning because it prevents any other processing
3588 * from occurring, and at the end because it terminates the request.
3589 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3590int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3591{
3592 struct http_txn *txn = &s->txn;
3593
3594 /* This connection is being tarpitted. The CLIENT side has
3595 * already set the connect expiration date to the right
3596 * timeout. We just have to check that the client is still
3597 * there and that the timeout has not expired.
3598 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3599 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3600 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3601 !tick_is_expired(req->analyse_exp, now_ms))
3602 return 0;
3603
3604 /* We will set the queue timer to the time spent, just for
3605 * logging purposes. We fake a 500 server error, so that the
3606 * attacker will not suspect his connection has been tarpitted.
3607 * It will not cause trouble to the logs because we can exclude
3608 * the tarpitted connections by filtering on the 'PT' status flags.
3609 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3610 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3611
3612 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3613 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3614 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3615
3616 req->analysers = 0;
3617 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3618
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3619 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3620 if (s->listener->counters)
3621 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3622
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3623 if (!(s->flags & SN_ERR_MASK))
3624 s->flags |= SN_ERR_PRXCOND;
3625 if (!(s->flags & SN_FINST_MASK))
3626 s->flags |= SN_FINST_T;
3627 return 0;
3628}
3629
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3630/* This function is an analyser which processes the HTTP request body. It looks
3631 * for parameters to be used for the load balancing algorithm (url_param). It
3632 * must only be called after the standard HTTP request processing has occurred,
3633 * because it expects the request to be parsed. It returns zero if it needs to
3634 * read more data, or 1 once it has completed its analysis.
3635 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3636int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3637{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3638 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3639 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3640 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3641
3642 /* We have to parse the HTTP request body to find any required data.
3643 * "balance url_param check_post" should have been the only way to get
3644 * into this. We were brought here after HTTP header analysis, so all
3645 * related structures are ready.
3646 */
3647
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3648 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3649 goto missing_data;
3650
3651 if (msg->msg_state < HTTP_MSG_100_SENT) {
3652 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3653 * send an HTTP/1.1 100 Continue intermediate response.
3654 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3655 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3656 struct hdr_ctx ctx;
3657 ctx.idx = 0;
3658 /* Expect is allowed in 1.1, look for it */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3659 if (http_find_header2("Expect", 6, req->buf.p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3660 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3661 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3662 }
3663 }
3664 msg->msg_state = HTTP_MSG_100_SENT;
3665 }
3666
3667 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3668 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3669 * req->buf.p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3670 * is still null. We must save the body in msg->next because it
3671 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3672 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3673 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3674
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3675 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3676 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3677 else
3678 msg->msg_state = HTTP_MSG_DATA;
3679 }
3680
3681 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3682 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3683 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3684 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3685 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3686 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3687
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3688 if (!ret)
3689 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3690 else if (ret < 0) {
3691 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3692 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3693 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3694 }
3695
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3696 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3697 * We have the first data byte is in msg->sov. We're waiting for at
3698 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3699 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3700
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3701 if (msg->body_len < limit)
3702 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3703
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3704 if (req->buf.i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3705 goto http_end;
3706
3707 missing_data:
3708 /* we get here if we need to wait for more data */
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]3709 if (buffer_full(&req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3710 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3711 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3712 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3713
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3714 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3715 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3716 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3717
3718 if (!(s->flags & SN_ERR_MASK))
3719 s->flags |= SN_ERR_CLITO;
3720 if (!(s->flags & SN_FINST_MASK))
3721 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3722 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3723 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3724
3725 /* we get here if we need to wait for more data */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3726 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]3727 /* Not enough data. We'll re-use the http-request
3728 * timeout here. Ideally, we should set the timeout
3729 * relative to the accept() date. We just set the
3730 * request timeout once at the beginning of the
3731 * request.
3732 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3733 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3734 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3735 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3736 return 0;
3737 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3738
3739 http_end:
3740 /* The situation will not evolve, so let's give up on the analysis. */
3741 s->logs.tv_request = now; /* update the request timer to reflect full request */
3742 req->analysers &= ~an_bit;
3743 req->analyse_exp = TICK_ETERNITY;
3744 return 1;
3745
3746 return_bad_req: /* let's centralize all bad requests */
3747 txn->req.msg_state = HTTP_MSG_ERROR;
3748 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3749 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3750
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3751 if (!(s->flags & SN_ERR_MASK))
3752 s->flags |= SN_ERR_PRXCOND;
3753 if (!(s->flags & SN_FINST_MASK))
3754 s->flags |= SN_FINST_R;
3755
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3756 return_err_msg:
3757 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3758 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3759 if (s->listener->counters)
3760 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3761 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3762}
3763
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3764/* send a server's name with an outgoing request over an established connection.
3765 * Note: this function is designed to be called once the request has been scheduled
3766 * for being forwarded. This is the reason why it rewinds the buffer before
3767 * proceeding.
3768 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3769int 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]3770
3771 struct hdr_ctx ctx;
3772
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3773 char *hdr_name = be->server_id_hdr_name;
3774 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3775 struct channel *req = txn->req.buf;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3776 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3777 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3778
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3779 ctx.idx = 0;
3780
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3781 old_o = req->buf.o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3782 if (old_o) {
3783 /* The request was already skipped, let's restore it */
Willy Tarreaua75bcef2012-08-24 22:56:11 +0200[diff] [blame]3784 b_rew(&req->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3785 }
3786
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3787 old_i = req->buf.i;
3788 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]3789 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3790 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3791 }
3792
3793 /* Add the new header requested with the server value */
3794 hdr_val = trash;
3795 memcpy(hdr_val, hdr_name, hdr_name_len);
3796 hdr_val += hdr_name_len;
3797 *hdr_val++ = ':';
3798 *hdr_val++ = ' ';
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]3799 hdr_val += strlcpy2(hdr_val, srv_name, trash + trashlen - hdr_val);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3800 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, hdr_val - trash);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3801
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3802 if (old_o) {
3803 /* If this was a forwarded request, we must readjust the amount of
3804 * data to be forwarded in order to take into account the size
3805 * variations.
3806 */
Willy Tarreaua75bcef2012-08-24 22:56:11 +0200[diff] [blame]3807 b_adv(&req->buf, old_o + req->buf.i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3808 }
3809
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3810 return 0;
3811}
3812
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3813/* Terminate current transaction and prepare a new one. This is very tricky
3814 * right now but it works.
3815 */
3816void http_end_txn_clean_session(struct session *s)
3817{
3818 /* FIXME: We need a more portable way of releasing a backend's and a
3819 * server's connections. We need a safer way to reinitialize buffer
3820 * flags. We also need a more accurate method for computing per-request
3821 * data.
3822 */
3823 http_silent_debug(__LINE__, s);
3824
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3825 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]3826 si_shutr(s->req->cons);
3827 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3828
3829 http_silent_debug(__LINE__, s);
3830
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3831 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3832 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3833 if (unlikely(s->srv_conn))
3834 sess_change_server(s, NULL);
3835 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3836
3837 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
3838 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]3839 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3840
3841 if (s->txn.status) {
3842 int n;
3843
3844 n = s->txn.status / 100;
3845 if (n < 1 || n > 5)
3846 n = 0;
3847
3848 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3849 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3850
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]3851 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3852 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3853 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3854 }
3855
3856 /* don't count other requests' data */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3857 s->logs.bytes_in -= s->req->buf.i;
3858 s->logs.bytes_out -= s->rep->buf.i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3859
3860 /* let's do a final log if we need it */
3861 if (s->logs.logwait &&
3862 !(s->flags & SN_MONITOR) &&
3863 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
3864 s->do_log(s);
3865 }
3866
3867 s->logs.accept_date = date; /* user-visible date for logging */
3868 s->logs.tv_accept = now; /* corrected date for internal use */
3869 tv_zero(&s->logs.tv_request);
3870 s->logs.t_queue = -1;
3871 s->logs.t_connect = -1;
3872 s->logs.t_data = -1;
3873 s->logs.t_close = 0;
3874 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
3875 s->logs.srv_queue_size = 0; /* we will get this number soon */
3876
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3877 s->logs.bytes_in = s->req->total = s->req->buf.i;
3878 s->logs.bytes_out = s->rep->total = s->rep->buf.i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3879
3880 if (s->pend_pos)
3881 pendconn_free(s->pend_pos);
3882
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3883 if (target_srv(&s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3884 if (s->flags & SN_CURR_SESS) {
3885 s->flags &= ~SN_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3886 target_srv(&s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3887 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3888 if (may_dequeue_tasks(target_srv(&s->target), s->be))
3889 process_srv_queue(target_srv(&s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3890 }
3891
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]3892 clear_target(&s->target);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3893
3894 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3895 s->req->cons->conn.t.sock.fd = -1; /* just to help with debugging */
Willy Tarreau505e34a2012-07-06 10:17:53 +0200[diff] [blame]3896 s->req->cons->conn.flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3897 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]3898 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3899 s->req->cons->err_loc = NULL;
3900 s->req->cons->exp = TICK_ETERNITY;
3901 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3902 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
3903 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]3904 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]3905 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
3906 s->txn.meth = 0;
3907 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]3908 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]3909 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3910 s->req->cons->flags |= SI_FL_INDEP_STR;
3911
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3912 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3913 s->req->flags |= CF_NEVER_WAIT;
3914 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3915 }
3916
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3917 /* if the request buffer is not empty, it means we're
3918 * about to process another request, so send pending
3919 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3920 * Just don't do this if the buffer is close to be full,
3921 * because the request will wait for it to flush a little
3922 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3923 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3924 if (s->req->buf.i) {
3925 if (s->rep->buf.o &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]3926 !buffer_full(&s->rep->buf, global.tune.maxrewrite) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]3927 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]3928 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3929 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3930
3931 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3932 channel_auto_read(s->req);
3933 channel_auto_close(s->req);
3934 channel_auto_read(s->rep);
3935 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3936
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]3937 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3938 s->rep->analysers = 0;
3939
3940 http_silent_debug(__LINE__, s);
3941}
3942
3943
3944/* This function updates the request state machine according to the response
3945 * state machine and buffer flags. It returns 1 if it changes anything (flag
3946 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3947 * it is only used to find when a request/response couple is complete. Both
3948 * this function and its equivalent should loop until both return zero. It
3949 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3950 */
3951int http_sync_req_state(struct session *s)
3952{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3953 struct channel *buf = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3954 struct http_txn *txn = &s->txn;
3955 unsigned int old_flags = buf->flags;
3956 unsigned int old_state = txn->req.msg_state;
3957
3958 http_silent_debug(__LINE__, s);
3959 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
3960 return 0;
3961
3962 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3963 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3964 * We can shut the read side unless we want to abort_on_close,
3965 * or we have a POST request. The issue with POST requests is
3966 * that some browsers still send a CRLF after the request, and
3967 * this CRLF must be read so that it does not remain in the kernel
3968 * buffers, otherwise a close could cause an RST on some systems
3969 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3970 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3971 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3972 channel_dont_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3973
3974 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
3975 goto wait_other_side;
3976
3977 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
3978 /* The server has not finished to respond, so we
3979 * don't want to move in order not to upset it.
3980 */
3981 goto wait_other_side;
3982 }
3983
3984 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
3985 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3986 channel_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3987 txn->req.msg_state = HTTP_MSG_TUNNEL;
3988 goto wait_other_side;
3989 }
3990
3991 /* When we get here, it means that both the request and the
3992 * response have finished receiving. Depending on the connection
3993 * mode, we'll have to wait for the last bytes to leave in either
3994 * direction, and sometimes for a close to be effective.
3995 */
3996
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3997 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
3998 /* Server-close mode : queue a connection close to the server */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3999 if (!(buf->flags & (CF_SHUTW|CF_SHUTW_NOW)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4000 channel_shutw_now(buf);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4001 }
4002 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4003 /* Option forceclose is set, or either side wants to close,
4004 * let's enforce it now that we're not expecting any new
4005 * data to come. The caller knows the session is complete
4006 * once both states are CLOSED.
4007 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4008 if (!(buf->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4009 channel_shutr_now(buf);
4010 channel_shutw_now(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4011 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4012 }
4013 else {
4014 /* The last possible modes are keep-alive and tunnel. Since tunnel
4015 * mode does not set the body analyser, we can't reach this place
4016 * in tunnel mode, so we're left with keep-alive only.
4017 * This mode is currently not implemented, we switch to tunnel mode.
4018 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4019 channel_auto_read(buf);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4020 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4021 }
4022
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4023 if (buf->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4024 /* if we've just closed an output, let's switch */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4025 buf->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
4026
Willy Tarreau8e21bb92012-08-24 22:40:29 +0200[diff] [blame]4027 if (!channel_is_empty(buf)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4028 txn->req.msg_state = HTTP_MSG_CLOSING;
4029 goto http_msg_closing;
4030 }
4031 else {
4032 txn->req.msg_state = HTTP_MSG_CLOSED;
4033 goto http_msg_closed;
4034 }
4035 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4036 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4037 }
4038
4039 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4040 http_msg_closing:
4041 /* nothing else to forward, just waiting for the output buffer
4042 * to be empty and for the shutw_now to take effect.
4043 */
Willy Tarreau8e21bb92012-08-24 22:40:29 +0200[diff] [blame]4044 if (channel_is_empty(buf)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4045 txn->req.msg_state = HTTP_MSG_CLOSED;
4046 goto http_msg_closed;
4047 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4048 else if (buf->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4049 txn->req.msg_state = HTTP_MSG_ERROR;
4050 goto wait_other_side;
4051 }
4052 }
4053
4054 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4055 http_msg_closed:
4056 goto wait_other_side;
4057 }
4058
4059 wait_other_side:
4060 http_silent_debug(__LINE__, s);
4061 return txn->req.msg_state != old_state || buf->flags != old_flags;
4062}
4063
4064
4065/* This function updates the response state machine according to the request
4066 * state machine and buffer flags. It returns 1 if it changes anything (flag
4067 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4068 * it is only used to find when a request/response couple is complete. Both
4069 * this function and its equivalent should loop until both return zero. It
4070 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4071 */
4072int http_sync_res_state(struct session *s)
4073{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4074 struct channel *buf = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4075 struct http_txn *txn = &s->txn;
4076 unsigned int old_flags = buf->flags;
4077 unsigned int old_state = txn->rsp.msg_state;
4078
4079 http_silent_debug(__LINE__, s);
4080 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4081 return 0;
4082
4083 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4084 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4085 * still monitor the server connection for a possible close
4086 * while the request is being uploaded, so we don't disable
4087 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4088 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4089 /* channel_dont_read(buf); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4090
4091 if (txn->req.msg_state == HTTP_MSG_ERROR)
4092 goto wait_other_side;
4093
4094 if (txn->req.msg_state < HTTP_MSG_DONE) {
4095 /* The client seems to still be sending data, probably
4096 * because we got an error response during an upload.
4097 * We have the choice of either breaking the connection
4098 * or letting it pass through. Let's do the later.
4099 */
4100 goto wait_other_side;
4101 }
4102
4103 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4104 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4105 channel_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4106 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
4107 goto wait_other_side;
4108 }
4109
4110 /* When we get here, it means that both the request and the
4111 * response have finished receiving. Depending on the connection
4112 * mode, we'll have to wait for the last bytes to leave in either
4113 * direction, and sometimes for a close to be effective.
4114 */
4115
4116 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4117 /* Server-close mode : shut read and wait for the request
4118 * side to close its output buffer. The caller will detect
4119 * when we're in DONE and the other is in CLOSED and will
4120 * catch that for the final cleanup.
4121 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4122 if (!(buf->flags & (CF_SHUTR|CF_SHUTR_NOW)))
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4123 channel_shutr_now(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4124 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4125 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4126 /* Option forceclose is set, or either side wants to close,
4127 * let's enforce it now that we're not expecting any new
4128 * data to come. The caller knows the session is complete
4129 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4130 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4131 if (!(buf->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4132 channel_shutr_now(buf);
4133 channel_shutw_now(buf);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4134 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4135 }
4136 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4137 /* The last possible modes are keep-alive and tunnel. Since tunnel
4138 * mode does not set the body analyser, we can't reach this place
4139 * in tunnel mode, so we're left with keep-alive only.
4140 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4141 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4142 channel_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4143 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4144 }
4145
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4146 if (buf->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4147 /* if we've just closed an output, let's switch */
Willy Tarreau8e21bb92012-08-24 22:40:29 +0200[diff] [blame]4148 if (!channel_is_empty(buf)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4149 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4150 goto http_msg_closing;
4151 }
4152 else {
4153 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4154 goto http_msg_closed;
4155 }
4156 }
4157 goto wait_other_side;
4158 }
4159
4160 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4161 http_msg_closing:
4162 /* nothing else to forward, just waiting for the output buffer
4163 * to be empty and for the shutw_now to take effect.
4164 */
Willy Tarreau8e21bb92012-08-24 22:40:29 +0200[diff] [blame]4165 if (channel_is_empty(buf)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4166 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4167 goto http_msg_closed;
4168 }
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4169 else if (buf->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4170 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4171 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4172 if (target_srv(&s->target))
4173 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4174 goto wait_other_side;
4175 }
4176 }
4177
4178 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4179 http_msg_closed:
4180 /* drop any pending data */
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4181 bi_erase(buf);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4182 channel_auto_close(buf);
4183 channel_auto_read(buf);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4184 goto wait_other_side;
4185 }
4186
4187 wait_other_side:
4188 http_silent_debug(__LINE__, s);
4189 return txn->rsp.msg_state != old_state || buf->flags != old_flags;
4190}
4191
4192
4193/* Resync the request and response state machines. Return 1 if either state
4194 * changes.
4195 */
4196int http_resync_states(struct session *s)
4197{
4198 struct http_txn *txn = &s->txn;
4199 int old_req_state = txn->req.msg_state;
4200 int old_res_state = txn->rsp.msg_state;
4201
4202 http_silent_debug(__LINE__, s);
4203 http_sync_req_state(s);
4204 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4205 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4206 if (!http_sync_res_state(s))
4207 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4208 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4209 if (!http_sync_req_state(s))
4210 break;
4211 }
4212 http_silent_debug(__LINE__, s);
4213 /* OK, both state machines agree on a compatible state.
4214 * There are a few cases we're interested in :
4215 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4216 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4217 * directions, so let's simply disable both analysers.
4218 * - HTTP_MSG_CLOSED on the response only means we must abort the
4219 * request.
4220 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4221 * with server-close mode means we've completed one request and we
4222 * must re-initialize the server connection.
4223 */
4224
4225 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4226 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4227 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4228 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4229 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4230 channel_auto_close(s->req);
4231 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4232 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4233 channel_auto_close(s->rep);
4234 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4235 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4236 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4237 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4238 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4239 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4240 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4241 channel_auto_close(s->rep);
4242 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4243 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4244 channel_abort(s->req);
4245 channel_auto_close(s->req);
4246 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4247 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4248 }
4249 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4250 txn->rsp.msg_state == HTTP_MSG_DONE &&
4251 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4252 /* server-close: terminate this server connection and
4253 * reinitialize a fresh-new transaction.
4254 */
4255 http_end_txn_clean_session(s);
4256 }
4257
4258 http_silent_debug(__LINE__, s);
4259 return txn->req.msg_state != old_req_state ||
4260 txn->rsp.msg_state != old_res_state;
4261}
4262
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4263/* This function is an analyser which forwards request body (including chunk
4264 * sizes if any). It is called as soon as we must forward, even if we forward
4265 * zero byte. The only situation where it must not be called is when we're in
4266 * tunnel mode and we want to forward till the close. It's used both to forward
4267 * remaining data and to resync after end of body. It expects the msg_state to
4268 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4269 * 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]4270 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4271 * bytes of pending data + the headers if not already done (between sol and sov).
4272 * 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]4273 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4274int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4275{
4276 struct http_txn *txn = &s->txn;
4277 struct http_msg *msg = &s->txn.req;
4278
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4279 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4280 return 0;
4281
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4282 if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
4283 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf.o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4284 /* Output closed while we were sending data. We must abort and
4285 * wake the other side up.
4286 */
4287 msg->msg_state = HTTP_MSG_ERROR;
4288 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4289 return 1;
4290 }
4291
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4292 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4293 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4294
4295 /* Note that we don't have to send 100-continue back because we don't
4296 * need the data to complete our job, and it's up to the server to
4297 * decide whether to return 100, 417 or anything else in return of
4298 * an "Expect: 100-continue" header.
4299 */
4300
4301 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4302 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4303 * req->buf.p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4304 * is still null. We must save the body in msg->next because it
4305 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4306 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4307 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4308
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4309 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4310 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4311 else {
4312 msg->msg_state = HTTP_MSG_DATA;
4313 }
4314 }
4315
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4316 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4317 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4318
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4319 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4320 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4321 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4322 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4323 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4324 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4325 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4326 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4327 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4328
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4329 if (msg->msg_state == HTTP_MSG_DATA) {
4330 /* must still forward */
4331 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4332 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4333
4334 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4335 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4336 msg->msg_state = HTTP_MSG_DATA_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4337 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4338 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4339 }
4340 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4341 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4342 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4343 * TRAILERS state.
4344 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4345 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4346
4347 if (!ret)
4348 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4349 else if (ret < 0) {
4350 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4351 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4352 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]4353 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4354 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4355 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4356 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4357 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
4358 /* we want the CRLF after the data */
4359 int ret;
4360
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4361 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4362
4363 if (ret == 0)
4364 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4365 else if (ret < 0) {
4366 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4367 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4368 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]4369 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4370 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4371 /* we're in MSG_CHUNK_SIZE now */
4372 }
4373 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4374 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4375
4376 if (ret == 0)
4377 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4378 else if (ret < 0) {
4379 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4380 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4381 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]4382 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4383 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4384 /* we're in HTTP_MSG_DONE now */
4385 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4386 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4387 int old_state = msg->msg_state;
4388
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4389 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4390 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4391 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4392 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4393 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4394 if (http_resync_states(s)) {
4395 /* some state changes occurred, maybe the analyser
4396 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4397 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4398 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4399 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4400 /* request errors are most likely due to
4401 * the server aborting the transfer.
4402 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4403 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4404 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4405 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4406 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4407 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4408 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4409 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4410 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4411
4412 /* If "option abortonclose" is set on the backend, we
4413 * want to monitor the client's connection and forward
4414 * any shutdown notification to the server, which will
4415 * decide whether to close or to go on processing the
4416 * request.
4417 */
4418 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4419 channel_auto_read(req);
4420 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4421 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4422 else if (s->txn.meth == HTTP_METH_POST) {
4423 /* POST requests may require to read extra CRLF
4424 * sent by broken browsers and which could cause
4425 * an RST to be sent upon close on some systems
4426 * (eg: Linux).
4427 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4428 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4429 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4430
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4431 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4432 }
4433 }
4434
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4435 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4436 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4437 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4438 if (!(s->flags & SN_ERR_MASK))
4439 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4440 if (!(s->flags & SN_FINST_MASK)) {
4441 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4442 s->flags |= SN_FINST_H;
4443 else
4444 s->flags |= SN_FINST_D;
4445 }
4446
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4447 s->fe->fe_counters.cli_aborts++;
4448 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4449 if (target_srv(&s->target))
4450 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4451
4452 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4453 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4454
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4455 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4456 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4457 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4458
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4459 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4460 * 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]4461 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4462 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4463 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4464
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4465 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4466 * 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]4467 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4468 * modes are already handled by the stream sock layer. We must not do
4469 * this in content-length mode because it could present the MSG_MORE
4470 * flag with the last block of forwarded data, which would cause an
4471 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4472 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4473 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4474 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4475
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4476 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4477 return 0;
4478
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4479 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4480 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4481 if (s->listener->counters)
4482 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4483 return_bad_req_stats_ok:
4484 txn->req.msg_state = HTTP_MSG_ERROR;
4485 if (txn->status) {
4486 /* Note: we don't send any error if some data were already sent */
4487 stream_int_retnclose(req->prod, NULL);
4488 } else {
4489 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4490 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4491 }
4492 req->analysers = 0;
4493 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]4494
4495 if (!(s->flags & SN_ERR_MASK))
4496 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4497 if (!(s->flags & SN_FINST_MASK)) {
4498 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4499 s->flags |= SN_FINST_H;
4500 else
4501 s->flags |= SN_FINST_D;
4502 }
4503 return 0;
4504
4505 aborted_xfer:
4506 txn->req.msg_state = HTTP_MSG_ERROR;
4507 if (txn->status) {
4508 /* Note: we don't send any error if some data were already sent */
4509 stream_int_retnclose(req->prod, NULL);
4510 } else {
4511 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4512 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4513 }
4514 req->analysers = 0;
4515 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4516
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4517 s->fe->fe_counters.srv_aborts++;
4518 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4519 if (target_srv(&s->target))
4520 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4521
4522 if (!(s->flags & SN_ERR_MASK))
4523 s->flags |= SN_ERR_SRVCL;
4524 if (!(s->flags & SN_FINST_MASK)) {
4525 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4526 s->flags |= SN_FINST_H;
4527 else
4528 s->flags |= SN_FINST_D;
4529 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4530 return 0;
4531}
4532
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4533/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4534 * processing can continue on next analysers, or zero if it either needs more
4535 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4536 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4537 * when it has nothing left to do, and may remove any analyser when it wants to
4538 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4539 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4540int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4541{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4542 struct http_txn *txn = &s->txn;
4543 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4544 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4545 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4546 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4547 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4548
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4549 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]4550 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4551 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4552 rep,
4553 rep->rex, rep->wex,
4554 rep->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4555 rep->buf.i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4556 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4557
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4558 /*
4559 * Now parse the partial (or complete) lines.
4560 * We will check the response syntax, and also join multi-line
4561 * headers. An index of all the lines will be elaborated while
4562 * parsing.
4563 *
4564 * For the parsing, we use a 28 states FSM.
4565 *
4566 * Here is the information we currently have :
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4567 * rep->buf.p = beginning of response
4568 * rep->buf.p + msg->eoh = end of processed headers / start of current one
4569 * rep->buf.p + rep->buf.i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4570 * msg->eol = end of current header or line (LF or CRLF)
4571 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4572 */
4573
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4574 /* There's a protected area at the end of the buffer for rewriting
4575 * purposes. We don't want to start to parse the request if the
4576 * protected area is affected, because we may have to move processed
4577 * data later, which is much more complicated.
4578 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4579 if (buffer_not_empty(&rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4580 if (unlikely(channel_full(rep) ||
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4581 bi_end(&rep->buf) < b_ptr(&rep->buf, msg->next) ||
4582 bi_end(&rep->buf) > rep->buf.data + rep->buf.size - global.tune.maxrewrite)) {
4583 if (rep->buf.o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4584 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4585 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4586 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4587 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4588 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4589 return 0;
4590 }
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4591 if (rep->buf.i <= rep->buf.size - global.tune.maxrewrite)
4592 buffer_slow_realign(&msg->buf->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4593 }
4594
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4595 if (likely(msg->next < rep->buf.i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4596 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4597 }
4598
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4599 /* 1: we might have to print this header in debug mode */
4600 if (unlikely((global.mode & MODE_DEBUG) &&
4601 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4602 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4603 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4604
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4605 sol = rep->buf.p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]4606 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf.i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4607 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4608
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4609 sol += hdr_idx_first_pos(&txn->hdr_idx);
4610 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4611
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4612 while (cur_idx) {
4613 eol = sol + txn->hdr_idx.v[cur_idx].len;
4614 debug_hdr("srvhdr", s, sol, eol);
4615 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4616 cur_idx = txn->hdr_idx.v[cur_idx].next;
4617 }
4618 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4619
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4620 /*
4621 * Now we quickly check if we have found a full valid response.
4622 * If not so, we check the FD and buffer states before leaving.
4623 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4624 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4625 * responses are checked first.
4626 *
4627 * Depending on whether the client is still there or not, we
4628 * may send an error response back or not. Note that normally
4629 * we should only check for HTTP status there, and check I/O
4630 * errors somewhere else.
4631 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4632
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4633 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4634 /* Invalid response */
4635 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4636 /* we detected a parsing error. We want to archive this response
4637 * in the dedicated proxy area for later troubleshooting.
4638 */
4639 hdr_response_bad:
4640 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4641 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]4642
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4643 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4644 if (target_srv(&s->target)) {
4645 target_srv(&s->target)->counters.failed_resp++;
4646 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4647 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4648 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4649 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4650 rep->analysers = 0;
4651 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4652 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4653 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4654 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4655
4656 if (!(s->flags & SN_ERR_MASK))
4657 s->flags |= SN_ERR_PRXCOND;
4658 if (!(s->flags & SN_FINST_MASK))
4659 s->flags |= SN_FINST_H;
4660
4661 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4662 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4663
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4664 /* too large response does not fit in buffer. */
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4665 else if (buffer_full(&rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4666 if (msg->err_pos < 0)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4667 msg->err_pos = rep->buf.i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4668 goto hdr_response_bad;
4669 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4670
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4671 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4672 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4673 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4674 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]4675
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4676 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4677 if (target_srv(&s->target)) {
4678 target_srv(&s->target)->counters.failed_resp++;
4679 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4680 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4681
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4682 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4683 rep->analysers = 0;
4684 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4685 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4686 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4687 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4688
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4689 if (!(s->flags & SN_ERR_MASK))
4690 s->flags |= SN_ERR_SRVCL;
4691 if (!(s->flags & SN_FINST_MASK))
4692 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4693 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4694 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4695
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4696 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4697 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4698 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4699 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]4700
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4701 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4702 if (target_srv(&s->target)) {
4703 target_srv(&s->target)->counters.failed_resp++;
4704 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4705 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4706
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4707 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4708 rep->analysers = 0;
4709 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4710 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4711 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4712 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4713
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4714 if (!(s->flags & SN_ERR_MASK))
4715 s->flags |= SN_ERR_SRVTO;
4716 if (!(s->flags & SN_FINST_MASK))
4717 s->flags |= SN_FINST_H;
4718 return 0;
4719 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4720
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4721 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4722 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4723 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4724 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]4725
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4726 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4727 if (target_srv(&s->target)) {
4728 target_srv(&s->target)->counters.failed_resp++;
4729 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4730 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4731
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4732 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4733 rep->analysers = 0;
4734 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4735 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4736 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4737 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4738
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4739 if (!(s->flags & SN_ERR_MASK))
4740 s->flags |= SN_ERR_SRVCL;
4741 if (!(s->flags & SN_FINST_MASK))
4742 s->flags |= SN_FINST_H;
4743 return 0;
4744 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4745
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4746 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4747 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4748 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4749 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]4750
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4751 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4752 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4753 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4754
4755 if (!(s->flags & SN_ERR_MASK))
4756 s->flags |= SN_ERR_CLICL;
4757 if (!(s->flags & SN_FINST_MASK))
4758 s->flags |= SN_FINST_H;
4759
4760 /* process_session() will take care of the error */
4761 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4762 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4763
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4764 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4765 return 0;
4766 }
4767
4768 /* More interesting part now : we know that we have a complete
4769 * response which at least looks like HTTP. We have an indicator
4770 * of each header's length, so we can parse them quickly.
4771 */
4772
4773 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4774 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]4775
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4776 /*
4777 * 1: get the status code
4778 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4779 n = rep->buf.p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4780 if (n < 1 || n > 5)
4781 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4782 /* when the client triggers a 4xx from the server, it's most often due
4783 * to a missing object or permission. These events should be tracked
4784 * because if they happen often, it may indicate a brute force or a
4785 * vulnerability scan.
4786 */
4787 if (n == 4)
4788 session_inc_http_err_ctr(s);
4789
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4790 if (target_srv(&s->target))
4791 target_srv(&s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4792
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4793 /* check if the response is HTTP/1.1 or above */
4794 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4795 ((rep->buf.p[5] > '1') ||
4796 ((rep->buf.p[5] == '1') && (rep->buf.p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4797 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4798
4799 /* "connection" has not been parsed yet */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4800 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]4801
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4802 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4803 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4804
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4805 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]4806
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]4807 /* Adjust server's health based on status code. Note: status codes 501
4808 * and 505 are triggered on demand by client request, so we must not
4809 * count them as server failures.
4810 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4811 if (target_srv(&s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4812 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4813 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4814 else
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4815 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4816 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4817
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4818 /*
4819 * 2: check for cacheability.
4820 */
4821
4822 switch (txn->status) {
4823 case 200:
4824 case 203:
4825 case 206:
4826 case 300:
4827 case 301:
4828 case 410:
4829 /* RFC2616 @13.4:
4830 * "A response received with a status code of
4831 * 200, 203, 206, 300, 301 or 410 MAY be stored
4832 * by a cache (...) unless a cache-control
4833 * directive prohibits caching."
4834 *
4835 * RFC2616 @9.5: POST method :
4836 * "Responses to this method are not cacheable,
4837 * unless the response includes appropriate
4838 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4839 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4840 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]4841 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4842 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
4843 break;
4844 default:
4845 break;
4846 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4847
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4848 /*
4849 * 3: we may need to capture headers
4850 */
4851 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]4852 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4853 capture_headers(rep->buf.p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4854 txn->rsp.cap, s->fe->rsp_cap);
4855
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4856 /* 4: determine the transfer-length.
4857 * According to RFC2616 #4.4, amended by the HTTPbis working group,
4858 * the presence of a message-body in a RESPONSE and its transfer length
4859 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4860 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4861 * All responses to the HEAD request method MUST NOT include a
4862 * message-body, even though the presence of entity-header fields
4863 * might lead one to believe they do. All 1xx (informational), 204
4864 * (No Content), and 304 (Not Modified) responses MUST NOT include a
4865 * message-body. All other responses do include a message-body,
4866 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4867 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4868 * 1. Any response which "MUST NOT" include a message-body (such as the
4869 * 1xx, 204 and 304 responses and any response to a HEAD request) is
4870 * always terminated by the first empty line after the header fields,
4871 * regardless of the entity-header fields present in the message.
4872 *
4873 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
4874 * the "chunked" transfer-coding (Section 6.2) is used, the
4875 * transfer-length is defined by the use of this transfer-coding.
4876 * If a Transfer-Encoding header field is present and the "chunked"
4877 * transfer-coding is not present, the transfer-length is defined by
4878 * the sender closing the connection.
4879 *
4880 * 3. If a Content-Length header field is present, its decimal value in
4881 * OCTETs represents both the entity-length and the transfer-length.
4882 * If a message is received with both a Transfer-Encoding header
4883 * field and a Content-Length header field, the latter MUST be ignored.
4884 *
4885 * 4. If the message uses the media type "multipart/byteranges", and
4886 * the transfer-length is not otherwise specified, then this self-
4887 * delimiting media type defines the transfer-length. This media
4888 * type MUST NOT be used unless the sender knows that the recipient
4889 * can parse it; the presence in a request of a Range header with
4890 * multiple byte-range specifiers from a 1.1 client implies that the
4891 * client can parse multipart/byteranges responses.
4892 *
4893 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4894 */
4895
4896 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4897 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4898 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4899 * FIXME: should we parse anyway and return an error on chunked encoding ?
4900 */
4901 if (txn->meth == HTTP_METH_HEAD ||
4902 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4903 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4904 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4905 goto skip_content_length;
4906 }
4907
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4908 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4909 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4910 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4911 http_find_header2("Transfer-Encoding", 17, rep->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4912 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4913 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
4914 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4915 /* bad transfer-encoding (chunked followed by something else) */
4916 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4917 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4918 break;
4919 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4920 }
4921
4922 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
4923 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4924 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4925 http_find_header2("Content-Length", 14, rep->buf.p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4926 signed long long cl;
4927
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4928 if (!ctx.vlen) {
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;
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 (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
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; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4936 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4937
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4938 if (cl < 0) {
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;
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 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4944 msg->err_pos = ctx.line + ctx.val - rep->buf.p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4945 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4946 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4947
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4948 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4949 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4950 }
4951
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4952 /* FIXME: we should also implement the multipart/byterange method.
4953 * For now on, we resort to close mode in this case (unknown length).
4954 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4955skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4956
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4957 /* end of job, return OK */
4958 rep->analysers &= ~an_bit;
4959 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4960 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4961 return 1;
4962}
4963
4964/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]4965 * It normally returns 1 unless it wants to break. It relies on buffers flags,
4966 * and updates t->rep->analysers. It might make sense to explode it into several
4967 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4968 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4969int 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]4970{
4971 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4972 struct http_msg *msg = &txn->rsp;
4973 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4974 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4975
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4976 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]4977 now_ms, __FUNCTION__,
4978 t,
4979 rep,
4980 rep->rex, rep->wex,
4981 rep->flags,
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]4982 rep->buf.i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4983 rep->analysers);
4984
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4985 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4986 return 0;
4987
4988 rep->analysers &= ~an_bit;
4989 rep->analyse_exp = TICK_ETERNITY;
4990
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4991 /* Now we have to check if we need to modify the Connection header.
4992 * This is more difficult on the response than it is on the request,
4993 * because we can have two different HTTP versions and we don't know
4994 * how the client will interprete a response. For instance, let's say
4995 * that the client sends a keep-alive request in HTTP/1.0 and gets an
4996 * HTTP/1.1 response without any header. Maybe it will bound itself to
4997 * HTTP/1.0 because it only knows about it, and will consider the lack
4998 * of header as a close, or maybe it knows HTTP/1.1 and can consider
4999 * the lack of header as a keep-alive. Thus we will use two flags
5000 * indicating how a request MAY be understood by the client. In case
5001 * of multiple possibilities, we'll fix the header to be explicit. If
5002 * ambiguous cases such as both close and keepalive are seen, then we
5003 * will fall back to explicit close. Note that we won't take risks with
5004 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5005 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5006 */
5007
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5008 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5009 txn->status == 101)) {
5010 /* Either we've established an explicit tunnel, or we're
5011 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5012 * to understand the next protocols. We have to switch to tunnel
5013 * mode, so that we transfer the request and responses then let
5014 * this protocol pass unmodified. When we later implement specific
5015 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5016 * header which contains information about that protocol for
5017 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5018 */
5019 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5020 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5021 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5022 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5023 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5024 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5025
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5026 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5027 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5028 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5029 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5030
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5031 /* now adjust header transformations depending on current state */
5032 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5033 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5034 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5035 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5036 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5037 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5038 else { /* SCL / KAL */
5039 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5040 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5041 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5042 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5043
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5044 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5045 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5046
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5047 /* Some keep-alive responses are converted to Server-close if
5048 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5049 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5050 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5051 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5052 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5053 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5054 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5055 }
5056
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5057 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5058 /*
5059 * 3: we will have to evaluate the filters.
5060 * As opposed to version 1.2, now they will be evaluated in the
5061 * filters order and not in the header order. This means that
5062 * each filter has to be validated among all headers.
5063 *
5064 * Filters are tried with ->be first, then with ->fe if it is
5065 * different from ->be.
5066 */
5067
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5068 cur_proxy = t->be;
5069 while (1) {
5070 struct proxy *rule_set = cur_proxy;
5071
5072 /* try headers filters */
5073 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5074 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5075 return_bad_resp:
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5076 if (target_srv(&t->target)) {
5077 target_srv(&t->target)->counters.failed_resp++;
5078 health_adjust(target_srv(&t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5079 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5080 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5081 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5082 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5083 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5084 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5085 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5086 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5087 if (!(t->flags & SN_ERR_MASK))
5088 t->flags |= SN_ERR_PRXCOND;
5089 if (!(t->flags & SN_FINST_MASK))
5090 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5091 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5092 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5093 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5094
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5095 /* has the response been denied ? */
5096 if (txn->flags & TX_SVDENY) {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5097 if (target_srv(&t->target))
5098 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5099
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5100 t->be->be_counters.denied_resp++;
5101 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5102 if (t->listener->counters)
5103 t->listener->counters->denied_resp++;
5104
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5105 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5106 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5107
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5108 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5109 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5110 if (txn->status < 200)
5111 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5112 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5113 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]5114 ret = acl_pass(ret);
5115 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5116 ret = !ret;
5117 if (!ret)
5118 continue;
5119 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5120 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5121 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5122 }
5123
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5124 /* check whether we're already working on the frontend */
5125 if (cur_proxy == t->fe)
5126 break;
5127 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5128 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5129
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5130 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5131 * We may be facing a 100-continue response, in which case this
5132 * is not the right response, and we're waiting for the next one.
5133 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5134 * next one.
5135 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5136 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5137 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5138 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5139 msg->msg_state = HTTP_MSG_RPBEFORE;
5140 txn->status = 0;
5141 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5142 return 1;
5143 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5144 else if (unlikely(txn->status < 200))
5145 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5146
5147 /* we don't have any 1xx status code now */
5148
5149 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5150 * 4: check for server cookie.
5151 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5152 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5153 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5154 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5155
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5156
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5157 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5158 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5159 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5160 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]5161 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5162
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5163 /*
5164 * 6: add server cookie in the response if needed
5165 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5166 if (target_srv(&t->target) && (t->be->ck_opts & PR_CK_INS) &&
5167 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5168 (!(t->flags & SN_DIRECT) ||
5169 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5170 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5171 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5172 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5173 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5174 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5175 int len;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5176 /* the server is known, it's not the one the client requested, or the
5177 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5178 * insert a set-cookie here, except if we want to insert only on POST
5179 * requests and this one isn't. Note that servers which don't have cookies
5180 * (eg: some backup servers) will return a full cookie removal request.
5181 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5182 if (!target_srv(&t->target)->cookie) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5183 len = sprintf(trash,
5184 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5185 t->be->cookie_name);
5186 }
5187 else {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5188 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]5189
5190 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5191 /* emit last_date, which is mandatory */
5192 trash[len++] = COOKIE_DELIM_DATE;
5193 s30tob64((date.tv_sec+3) >> 2, trash + len); len += 5;
5194 if (t->be->cookie_maxlife) {
5195 /* emit first_date, which is either the original one or
5196 * the current date.
5197 */
5198 trash[len++] = COOKIE_DELIM_DATE;
5199 s30tob64(txn->cookie_first_date ?
5200 txn->cookie_first_date >> 2 :
5201 (date.tv_sec+3) >> 2, trash + len);
5202 len += 5;
5203 }
5204 }
5205 len += sprintf(trash + len, "; path=/");
5206 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5207
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5208 if (t->be->cookie_domain)
5209 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5210
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5211 if (t->be->ck_opts & PR_CK_HTTPONLY)
5212 len += sprintf(trash+len, "; HttpOnly");
5213
5214 if (t->be->ck_opts & PR_CK_SECURE)
5215 len += sprintf(trash+len, "; Secure");
5216
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5217 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash, len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5218 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5219
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5220 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5221 if (target_srv(&t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5222 /* the server did not change, only the date was updated */
5223 txn->flags |= TX_SCK_UPDATED;
5224 else
5225 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5226
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5227 /* Here, we will tell an eventual cache on the client side that we don't
5228 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5229 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5230 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5231 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5232 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5233
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5234 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5235
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5236 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5237 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5238 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5239 }
5240 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5241
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5242 /*
5243 * 7: check if result will be cacheable with a cookie.
5244 * We'll block the response if security checks have caught
5245 * nasty things such as a cacheable cookie.
5246 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5247 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5248 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5249 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5250
5251 /* we're in presence of a cacheable response containing
5252 * a set-cookie header. We'll block it as requested by
5253 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5254 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5255 if (target_srv(&t->target))
5256 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5257
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5258 t->be->be_counters.denied_resp++;
5259 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5260 if (t->listener->counters)
5261 t->listener->counters->denied_resp++;
5262
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5263 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5264 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5265 send_log(t->be, LOG_ALERT,
5266 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5267 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5268 goto return_srv_prx_502;
5269 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5270
5271 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5272 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5273 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5274 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5275 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE)) {
5276 unsigned int want_flags = 0;
5277
5278 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5279 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5280 /* we want a keep-alive response here. Keep-alive header
5281 * required if either side is not 1.1.
5282 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5283 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5284 want_flags |= TX_CON_KAL_SET;
5285 }
5286 else {
5287 /* we want a close response here. Close header required if
5288 * the server is 1.1, regardless of the client.
5289 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5290 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5291 want_flags |= TX_CON_CLO_SET;
5292 }
5293
5294 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5295 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5296 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5297
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5298 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5299 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5300 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5301 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5302
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5303 /*************************************************************
5304 * OK, that's finished for the headers. We have done what we *
5305 * could. Let's switch to the DATA state. *
5306 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5307
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5308 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5309
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5310 /* if the user wants to log as soon as possible, without counting
5311 * bytes from the server, then this is the right moment. We have
5312 * to temporarily assign bytes_out to log what we currently have.
5313 */
5314 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5315 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5316 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5317 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5318 t->logs.bytes_out = 0;
5319 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5320
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5321 /* Note: we must not try to cheat by jumping directly to DATA,
5322 * otherwise we would not let the client side wake up.
5323 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5324
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5325 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5326 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5327 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5328}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5329
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5330/* This function is an analyser which forwards response body (including chunk
5331 * sizes if any). It is called as soon as we must forward, even if we forward
5332 * zero byte. The only situation where it must not be called is when we're in
5333 * tunnel mode and we want to forward till the close. It's used both to forward
5334 * remaining data and to resync after end of body. It expects the msg_state to
5335 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5336 * 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]5337 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5338 * bytes of pending data + the headers if not already done (between sol and sov).
5339 * 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]5340 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5341int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5342{
5343 struct http_txn *txn = &s->txn;
5344 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5345 unsigned int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5346
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5347 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5348 return 0;
5349
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5350 if ((res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
5351 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf.o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5352 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5353 /* Output closed while we were sending data. We must abort and
5354 * wake the other side up.
5355 */
5356 msg->msg_state = HTTP_MSG_ERROR;
5357 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5358 return 1;
5359 }
5360
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5361 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5362 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5363
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5364 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5365 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]5366 * rep->buf.p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5367 * is still null. We must save the body in msg->next because it
5368 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5369 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]5370 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5371
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5372 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5373 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5374 else {
5375 msg->msg_state = HTTP_MSG_DATA;
5376 }
5377 }
5378
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5379 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5380 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5381 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5382 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5383 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5384 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5385 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5386 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5387 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5388 }
5389
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5390 if (msg->msg_state == HTTP_MSG_DATA) {
5391 /* must still forward */
5392 if (res->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5393 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5394
5395 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5396 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5397 msg->msg_state = HTTP_MSG_DATA_CRLF;
5398 else
5399 msg->msg_state = HTTP_MSG_DONE;
5400 }
5401 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5402 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5403 * set ->sov and ->next to point to the body and switch to DATA or
5404 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5405 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5406 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5407
5408 if (!ret)
5409 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5410 else if (ret < 0) {
5411 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5412 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]5413 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5414 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5415 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5416 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5417 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
5418 /* we want the CRLF after the data */
5419 int ret;
5420
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5421 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5422
5423 if (!ret)
5424 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5425 else if (ret < 0) {
5426 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5427 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]5428 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5429 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5430 /* we're in MSG_CHUNK_SIZE now */
5431 }
5432 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5433 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5434
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5435 if (ret == 0)
5436 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5437 else if (ret < 0) {
5438 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5439 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]5440 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5441 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5442 /* we're in HTTP_MSG_DONE now */
5443 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5444 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5445 int old_state = msg->msg_state;
5446
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5447 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5448 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5449 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5450 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5451 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5452 if (http_resync_states(s)) {
5453 http_silent_debug(__LINE__, s);
5454 /* some state changes occurred, maybe the analyser
5455 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5456 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5457 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5458 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5459 /* response errors are most likely due to
5460 * the client aborting the transfer.
5461 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5462 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5463 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5464 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5465 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5466 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5467 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5468 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5469 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5470 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5471 }
5472 }
5473
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5474 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5475 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5476 if (res->flags & CF_SHUTR) {
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5477 if (!(s->flags & SN_ERR_MASK))
5478 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5479 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5480 if (target_srv(&s->target))
5481 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5482 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5483 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5484
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5485 if (res->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5486 goto aborted_xfer;
5487
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5488 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5489 if (!s->req->analysers)
5490 goto return_bad_res;
5491
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5492 /* forward any data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5493 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5494 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5495 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5496 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5497 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5498 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5499 }
5500
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5501 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5502 * 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]5503 * Similarly, with keep-alive on the client side, we don't want to forward a
5504 * close.
5505 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5506 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5507 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5508 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5509 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5510
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5511 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5512 * 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]5513 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5514 * modes are already handled by the stream sock layer. We must not do
5515 * this in content-length mode because it could present the MSG_MORE
5516 * flag with the last block of forwarded data, which would cause an
5517 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5518 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5519 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5520 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5521
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5522 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5523 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5524 return 0;
5525
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5526 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5527 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5528 if (target_srv(&s->target))
5529 target_srv(&s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5530
5531 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5532 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5533 /* don't send any error message as we're in the body */
5534 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5535 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5536 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]5537 if (target_srv(&s->target))
5538 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5539
5540 if (!(s->flags & SN_ERR_MASK))
5541 s->flags |= SN_ERR_PRXCOND;
5542 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5543 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5544 return 0;
5545
5546 aborted_xfer:
5547 txn->rsp.msg_state = HTTP_MSG_ERROR;
5548 /* don't send any error message as we're in the body */
5549 stream_int_retnclose(res->cons, NULL);
5550 res->analysers = 0;
5551 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5552
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5553 s->fe->fe_counters.cli_aborts++;
5554 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5555 if (target_srv(&s->target))
5556 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5557
5558 if (!(s->flags & SN_ERR_MASK))
5559 s->flags |= SN_ERR_CLICL;
5560 if (!(s->flags & SN_FINST_MASK))
5561 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5562 return 0;
5563}
5564
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5565/* Iterate the same filter through all request headers.
5566 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5567 * Since it can manage the switch to another backend, it updates the per-proxy
5568 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5569 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5570int 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]5571{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5572 char term;
5573 char *cur_ptr, *cur_end, *cur_next;
5574 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5575 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5576 struct hdr_idx_elem *cur_hdr;
5577 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5578
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5579 last_hdr = 0;
5580
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]5581 cur_next = req->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5582 old_idx = 0;
5583
5584 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5585 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5586 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5587 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5588 (exp->action == ACT_ALLOW ||
5589 exp->action == ACT_DENY ||
5590 exp->action == ACT_TARPIT))
5591 return 0;
5592
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5593 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5594 if (!cur_idx)
5595 break;
5596
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5597 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5598 cur_ptr = cur_next;
5599 cur_end = cur_ptr + cur_hdr->len;
5600 cur_next = cur_end + cur_hdr->cr + 1;
5601
5602 /* Now we have one header between cur_ptr and cur_end,
5603 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5604 */
5605
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5606 /* The annoying part is that pattern matching needs
5607 * that we modify the contents to null-terminate all
5608 * strings before testing them.
5609 */
5610
5611 term = *cur_end;
5612 *cur_end = '\0';
5613
5614 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5615 switch (exp->action) {
5616 case ACT_SETBE:
5617 /* It is not possible to jump a second time.
5618 * FIXME: should we return an HTTP/500 here so that
5619 * the admin knows there's a problem ?
5620 */
5621 if (t->be != t->fe)
5622 break;
5623
5624 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5625 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5626 last_hdr = 1;
5627 break;
5628
5629 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5630 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5631 last_hdr = 1;
5632 break;
5633
5634 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5635 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5636 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5637
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5638 t->fe->fe_counters.denied_req++;
5639 if (t->fe != t->be)
5640 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5641 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5642 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5643
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5644 break;
5645
5646 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5647 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5648 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5649
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5650 t->fe->fe_counters.denied_req++;
5651 if (t->fe != t->be)
5652 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5653 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5654 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5655
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5656 break;
5657
5658 case ACT_REPLACE:
5659 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5660 delta = buffer_replace2(&req->buf, cur_ptr, cur_end, trash, len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5661 /* FIXME: if the user adds a newline in the replacement, the
5662 * index will not be recalculated for now, and the new line
5663 * will not be counted as a new header.
5664 */
5665
5666 cur_end += delta;
5667 cur_next += delta;
5668 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5669 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5670 break;
5671
5672 case ACT_REMOVE:
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5673 delta = buffer_replace2(&req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5674 cur_next += delta;
5675
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5676 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5677 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5678 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5679 cur_hdr->len = 0;
5680 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5681 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5682 break;
5683
5684 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5685 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5686 if (cur_end)
5687 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5688
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5689 /* keep the link from this header to next one in case of later
5690 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5691 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5692 old_idx = cur_idx;
5693 }
5694 return 0;
5695}
5696
5697
5698/* Apply the filter to the request line.
5699 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5700 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5701 * Since it can manage the switch to another backend, it updates the per-proxy
5702 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5703 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5704int 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]5705{
5706 char term;
5707 char *cur_ptr, *cur_end;
5708 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5709 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5710 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5711
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5712
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5713 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5714 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5715 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5716 (exp->action == ACT_ALLOW ||
5717 exp->action == ACT_DENY ||
5718 exp->action == ACT_TARPIT))
5719 return 0;
5720 else if (exp->action == ACT_REMOVE)
5721 return 0;
5722
5723 done = 0;
5724
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]5725 cur_ptr = req->buf.p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5726 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5727
5728 /* Now we have the request line between cur_ptr and cur_end */
5729
5730 /* The annoying part is that pattern matching needs
5731 * that we modify the contents to null-terminate all
5732 * strings before testing them.
5733 */
5734
5735 term = *cur_end;
5736 *cur_end = '\0';
5737
5738 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5739 switch (exp->action) {
5740 case ACT_SETBE:
5741 /* It is not possible to jump a second time.
5742 * FIXME: should we return an HTTP/500 here so that
5743 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5744 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5745 if (t->be != t->fe)
5746 break;
5747
5748 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5749 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5750 done = 1;
5751 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5752
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5753 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5754 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5755 done = 1;
5756 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5757
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5758 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5759 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5760
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5761 t->fe->fe_counters.denied_req++;
5762 if (t->fe != t->be)
5763 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5764 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5765 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5766
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5767 done = 1;
5768 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5769
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5770 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5771 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5772
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5773 t->fe->fe_counters.denied_req++;
5774 if (t->fe != t->be)
5775 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5776 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5777 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5778
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5779 done = 1;
5780 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5781
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5782 case ACT_REPLACE:
5783 *cur_end = term; /* restore the string terminator */
5784 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5785 delta = buffer_replace2(&req->buf, cur_ptr, cur_end, trash, len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5786 /* FIXME: if the user adds a newline in the replacement, the
5787 * index will not be recalculated for now, and the new line
5788 * will not be counted as a new header.
5789 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5790
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5791 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5792 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]5793 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5794 HTTP_MSG_RQMETH,
5795 cur_ptr, cur_end + 1,
5796 NULL, NULL);
5797 if (unlikely(!cur_end))
5798 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5799
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5800 /* we have a full request and we know that we have either a CR
5801 * or an LF at <ptr>.
5802 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5803 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
5804 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]5805 /* there is no point trying this regex on headers */
5806 return 1;
5807 }
5808 }
5809 *cur_end = term; /* restore the string terminator */
5810 return done;
5811}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]5812
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5813
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5814
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5815/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5816 * 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]5817 * 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]5818 * unparsable request. Since it can manage the switch to another backend, it
5819 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5820 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5821int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5822{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5823 struct http_txn *txn = &s->txn;
5824 struct hdr_exp *exp;
5825
5826 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5827 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5828
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5829 /*
5830 * The interleaving of transformations and verdicts
5831 * makes it difficult to decide to continue or stop
5832 * the evaluation.
5833 */
5834
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5835 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
5836 break;
5837
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5838 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5839 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5840 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5841 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5842
5843 /* if this filter had a condition, evaluate it now and skip to
5844 * next filter if the condition does not match.
5845 */
5846 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5847 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]5848 ret = acl_pass(ret);
5849 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
5850 ret = !ret;
5851
5852 if (!ret)
5853 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5854 }
5855
5856 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5857 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5858 if (unlikely(ret < 0))
5859 return -1;
5860
5861 if (likely(ret == 0)) {
5862 /* The filter did not match the request, it can be
5863 * iterated through all headers.
5864 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5865 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5866 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5867 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5868 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5869}
5870
5871
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5872
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5873/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5874 * Try to retrieve the server associated to the appsession.
5875 * If the server is found, it's assigned to the session.
5876 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5877void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5878 struct http_txn *txn = &t->txn;
5879 appsess *asession = NULL;
5880 char *sessid_temp = NULL;
5881
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5882 if (len > t->be->appsession_len) {
5883 len = t->be->appsession_len;
5884 }
5885
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5886 if (t->be->options2 & PR_O2_AS_REQL) {
5887 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5888 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5889 /* 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]5890 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5891 }
5892
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5893 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5894 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5895 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5896 return;
5897 }
5898
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5899 memcpy(txn->sessid, buf, len);
5900 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5901 }
5902
5903 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
5904 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5905 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5906 return;
5907 }
5908
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5909 memcpy(sessid_temp, buf, len);
5910 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5911
5912 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
5913 /* free previously allocated memory */
5914 pool_free2(apools.sessid, sessid_temp);
5915
5916 if (asession != NULL) {
5917 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
5918 if (!(t->be->options2 & PR_O2_AS_REQL))
5919 asession->request_count++;
5920
5921 if (asession->serverid != NULL) {
5922 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5923
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5924 while (srv) {
5925 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]5926 if ((srv->state & SRV_RUNNING) ||
5927 (t->be->options & PR_O_PERSIST) ||
5928 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5929 /* we found the server and it's usable */
5930 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]5931 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5932 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]5933 set_target_server(&t->target, srv);
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]5934
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5935 break;
5936 } else {
5937 txn->flags &= ~TX_CK_MASK;
5938 txn->flags |= TX_CK_DOWN;
5939 }
5940 }
5941 srv = srv->next;
5942 }
5943 }
5944 }
5945}
5946
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5947/* Find the end of a cookie value contained between <s> and <e>. It works the
5948 * same way as with headers above except that the semi-colon also ends a token.
5949 * See RFC2965 for more information. Note that it requires a valid header to
5950 * return a valid result.
5951 */
5952char *find_cookie_value_end(char *s, const char *e)
5953{
5954 int quoted, qdpair;
5955
5956 quoted = qdpair = 0;
5957 for (; s < e; s++) {
5958 if (qdpair) qdpair = 0;
5959 else if (quoted) {
5960 if (*s == '\\') qdpair = 1;
5961 else if (*s == '"') quoted = 0;
5962 }
5963 else if (*s == '"') quoted = 1;
5964 else if (*s == ',' || *s == ';') return s;
5965 }
5966 return s;
5967}
5968
5969/* Delete a value in a header between delimiters <from> and <next> in buffer
5970 * <buf>. The number of characters displaced is returned, and the pointer to
5971 * the first delimiter is updated if required. The function tries as much as
5972 * possible to respect the following principles :
5973 * - replace <from> delimiter by the <next> one unless <from> points to a
5974 * colon, in which case <next> is simply removed
5975 * - set exactly one space character after the new first delimiter, unless
5976 * there are not enough characters in the block being moved to do so.
5977 * - remove unneeded spaces before the previous delimiter and after the new
5978 * one.
5979 *
5980 * It is the caller's responsibility to ensure that :
5981 * - <from> points to a valid delimiter or the colon ;
5982 * - <next> points to a valid delimiter or the final CR/LF ;
5983 * - there are non-space chars before <from> ;
5984 * - there is a CR/LF at or after <next>.
5985 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5986int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5987{
5988 char *prev = *from;
5989
5990 if (*prev == ':') {
5991 /* We're removing the first value, preserve the colon and add a
5992 * space if possible.
5993 */
5994 if (!http_is_crlf[(unsigned char)*next])
5995 next++;
5996 prev++;
5997 if (prev < next)
5998 *prev++ = ' ';
5999
6000 while (http_is_spht[(unsigned char)*next])
6001 next++;
6002 } else {
6003 /* Remove useless spaces before the old delimiter. */
6004 while (http_is_spht[(unsigned char)*(prev-1)])
6005 prev--;
6006 *from = prev;
6007
6008 /* copy the delimiter and if possible a space if we're
6009 * not at the end of the line.
6010 */
6011 if (!http_is_crlf[(unsigned char)*next]) {
6012 *prev++ = *next++;
6013 if (prev + 1 < next)
6014 *prev++ = ' ';
6015 while (http_is_spht[(unsigned char)*next])
6016 next++;
6017 }
6018 }
6019 return buffer_replace2(buf, prev, next, NULL, 0);
6020}
6021
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6022/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6023 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6024 * desirable to call it only when needed. This code is quite complex because
6025 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6026 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6027 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6028void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6029{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6030 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6031 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6032 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6033 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6034 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6035
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6036 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6037 old_idx = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6038 hdr_next = req->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6039
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6040 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6041 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6042 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6043
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6044 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6045 hdr_beg = hdr_next;
6046 hdr_end = hdr_beg + cur_hdr->len;
6047 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6048
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6049 /* We have one full header between hdr_beg and hdr_end, and the
6050 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6051 * "Cookie:" headers.
6052 */
6053
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6054 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6055 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6056 old_idx = cur_idx;
6057 continue;
6058 }
6059
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6060 del_from = NULL; /* nothing to be deleted */
6061 preserve_hdr = 0; /* assume we may kill the whole header */
6062
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6063 /* Now look for cookies. Conforming to RFC2109, we have to support
6064 * attributes whose name begin with a '$', and associate them with
6065 * the right cookie, if we want to delete this cookie.
6066 * So there are 3 cases for each cookie read :
6067 * 1) it's a special attribute, beginning with a '$' : ignore it.
6068 * 2) it's a server id cookie that we *MAY* want to delete : save
6069 * some pointers on it (last semi-colon, beginning of cookie...)
6070 * 3) it's an application cookie : we *MAY* have to delete a previous
6071 * "special" cookie.
6072 * At the end of loop, if a "special" cookie remains, we may have to
6073 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6074 * *MUST* delete it.
6075 *
6076 * Note: RFC2965 is unclear about the processing of spaces around
6077 * the equal sign in the ATTR=VALUE form. A careful inspection of
6078 * the RFC explicitly allows spaces before it, and not within the
6079 * tokens (attrs or values). An inspection of RFC2109 allows that
6080 * too but section 10.1.3 lets one think that spaces may be allowed
6081 * after the equal sign too, resulting in some (rare) buggy
6082 * implementations trying to do that. So let's do what servers do.
6083 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6084 * allowed quoted strings in values, with any possible character
6085 * after a backslash, including control chars and delimitors, which
6086 * causes parsing to become ambiguous. Browsers also allow spaces
6087 * within values even without quotes.
6088 *
6089 * We have to keep multiple pointers in order to support cookie
6090 * removal at the beginning, middle or end of header without
6091 * corrupting the header. All of these headers are valid :
6092 *
6093 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6094 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6095 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6096 * | | | | | | | | |
6097 * | | | | | | | | hdr_end <--+
6098 * | | | | | | | +--> next
6099 * | | | | | | +----> val_end
6100 * | | | | | +-----------> val_beg
6101 * | | | | +--------------> equal
6102 * | | | +----------------> att_end
6103 * | | +---------------------> att_beg
6104 * | +--------------------------> prev
6105 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6106 */
6107
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6108 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6109 /* Iterate through all cookies on this line */
6110
6111 /* find att_beg */
6112 att_beg = prev + 1;
6113 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6114 att_beg++;
6115
6116 /* find att_end : this is the first character after the last non
6117 * space before the equal. It may be equal to hdr_end.
6118 */
6119 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6120
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6121 while (equal < hdr_end) {
6122 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6123 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6124 if (http_is_spht[(unsigned char)*equal++])
6125 continue;
6126 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6127 }
6128
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6129 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6130 * is between <att_beg> and <equal>, both may be identical.
6131 */
6132
6133 /* look for end of cookie if there is an equal sign */
6134 if (equal < hdr_end && *equal == '=') {
6135 /* look for the beginning of the value */
6136 val_beg = equal + 1;
6137 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6138 val_beg++;
6139
6140 /* find the end of the value, respecting quotes */
6141 next = find_cookie_value_end(val_beg, hdr_end);
6142
6143 /* make val_end point to the first white space or delimitor after the value */
6144 val_end = next;
6145 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6146 val_end--;
6147 } else {
6148 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6149 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6150
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6151 /* We have nothing to do with attributes beginning with '$'. However,
6152 * they will automatically be removed if a header before them is removed,
6153 * since they're supposed to be linked together.
6154 */
6155 if (*att_beg == '$')
6156 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6157
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6158 /* Ignore cookies with no equal sign */
6159 if (equal == next) {
6160 /* This is not our cookie, so we must preserve it. But if we already
6161 * scheduled another cookie for removal, we cannot remove the
6162 * complete header, but we can remove the previous block itself.
6163 */
6164 preserve_hdr = 1;
6165 if (del_from != NULL) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6166 int delta = del_hdr_value(&req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6167 val_end += delta;
6168 next += delta;
6169 hdr_end += delta;
6170 hdr_next += delta;
6171 cur_hdr->len += delta;
6172 http_msg_move_end(&txn->req, delta);
6173 prev = del_from;
6174 del_from = NULL;
6175 }
6176 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6177 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6178
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6179 /* if there are spaces around the equal sign, we need to
6180 * strip them otherwise we'll get trouble for cookie captures,
6181 * or even for rewrites. Since this happens extremely rarely,
6182 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6183 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6184 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6185 int stripped_before = 0;
6186 int stripped_after = 0;
6187
6188 if (att_end != equal) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6189 stripped_before = buffer_replace2(&req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6190 equal += stripped_before;
6191 val_beg += stripped_before;
6192 }
6193
6194 if (val_beg > equal + 1) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6195 stripped_after = buffer_replace2(&req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6196 val_beg += stripped_after;
6197 stripped_before += stripped_after;
6198 }
6199
6200 val_end += stripped_before;
6201 next += stripped_before;
6202 hdr_end += stripped_before;
6203 hdr_next += stripped_before;
6204 cur_hdr->len += stripped_before;
6205 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6206 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6207 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6208
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6209 /* First, let's see if we want to capture this cookie. We check
6210 * that we don't already have a client side cookie, because we
6211 * can only capture one. Also as an optimisation, we ignore
6212 * cookies shorter than the declared name.
6213 */
6214 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6215 (val_end - att_beg >= t->fe->capture_namelen) &&
6216 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6217 int log_len = val_end - att_beg;
6218
6219 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6220 Alert("HTTP logging : out of memory.\n");
6221 } else {
6222 if (log_len > t->fe->capture_len)
6223 log_len = t->fe->capture_len;
6224 memcpy(txn->cli_cookie, att_beg, log_len);
6225 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6226 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6227 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6228
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6229 /* Persistence cookies in passive, rewrite or insert mode have the
6230 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6231 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6232 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6233 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6234 * For cookies in prefix mode, the form is :
6235 *
6236 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6237 */
6238 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6239 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6240 struct server *srv = t->be->srv;
6241 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6242
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6243 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6244 * have the server ID between val_beg and delim, and the original cookie between
6245 * delim+1 and val_end. Otherwise, delim==val_end :
6246 *
6247 * Cookie: NAME=SRV; # in all but prefix modes
6248 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6249 * | || || | |+-> next
6250 * | || || | +--> val_end
6251 * | || || +---------> delim
6252 * | || |+------------> val_beg
6253 * | || +-------------> att_end = equal
6254 * | |+-----------------> att_beg
6255 * | +------------------> prev
6256 * +-------------------------> hdr_beg
6257 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6258
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6259 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6260 for (delim = val_beg; delim < val_end; delim++)
6261 if (*delim == COOKIE_DELIM)
6262 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6263 } else {
6264 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6265 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6266 /* Now check if the cookie contains a date field, which would
6267 * appear after a vertical bar ('|') just after the server name
6268 * and before the delimiter.
6269 */
6270 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6271 if (vbar1) {
6272 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6273 * right is the last seen date. It is a base64 encoded
6274 * 30-bit value representing the UNIX date since the
6275 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6276 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6277 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6278 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6279 if (val_end - vbar1 >= 5) {
6280 val = b64tos30(vbar1);
6281 if (val > 0)
6282 txn->cookie_last_date = val << 2;
6283 }
6284 /* look for a second vertical bar */
6285 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6286 if (vbar1 && (val_end - vbar1 > 5)) {
6287 val = b64tos30(vbar1 + 1);
6288 if (val > 0)
6289 txn->cookie_first_date = val << 2;
6290 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6291 }
6292 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6293
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6294 /* if the cookie has an expiration date and the proxy wants to check
6295 * it, then we do that now. We first check if the cookie is too old,
6296 * then only if it has expired. We detect strict overflow because the
6297 * time resolution here is not great (4 seconds). Cookies with dates
6298 * in the future are ignored if their offset is beyond one day. This
6299 * allows an admin to fix timezone issues without expiring everyone
6300 * and at the same time avoids keeping unwanted side effects for too
6301 * long.
6302 */
6303 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6304 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6305 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6306 txn->flags &= ~TX_CK_MASK;
6307 txn->flags |= TX_CK_OLD;
6308 delim = val_beg; // let's pretend we have not found the cookie
6309 txn->cookie_first_date = 0;
6310 txn->cookie_last_date = 0;
6311 }
6312 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6313 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6314 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6315 txn->flags &= ~TX_CK_MASK;
6316 txn->flags |= TX_CK_EXPIRED;
6317 delim = val_beg; // let's pretend we have not found the cookie
6318 txn->cookie_first_date = 0;
6319 txn->cookie_last_date = 0;
6320 }
6321
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6322 /* Here, we'll look for the first running server which supports the cookie.
6323 * This allows to share a same cookie between several servers, for example
6324 * to dedicate backup servers to specific servers only.
6325 * However, to prevent clients from sticking to cookie-less backup server
6326 * when they have incidentely learned an empty cookie, we simply ignore
6327 * empty cookies and mark them as invalid.
6328 * The same behaviour is applied when persistence must be ignored.
6329 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6330 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6331 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6332
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6333 while (srv) {
6334 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6335 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6336 if ((srv->state & SRV_RUNNING) ||
6337 (t->be->options & PR_O_PERSIST) ||
6338 (t->flags & SN_FORCE_PRST)) {
6339 /* we found the server and we can use it */
6340 txn->flags &= ~TX_CK_MASK;
6341 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6342 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]6343 set_target_server(&t->target, srv);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6344 break;
6345 } else {
6346 /* we found a server, but it's down,
6347 * mark it as such and go on in case
6348 * another one is available.
6349 */
6350 txn->flags &= ~TX_CK_MASK;
6351 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6352 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6353 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6354 srv = srv->next;
6355 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6356
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6357 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6358 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6359 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6360 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6361 txn->flags |= TX_CK_UNUSED;
6362 else
6363 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6364 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6365
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6366 /* depending on the cookie mode, we may have to either :
6367 * - delete the complete cookie if we're in insert+indirect mode, so that
6368 * the server never sees it ;
6369 * - remove the server id from the cookie value, and tag the cookie as an
6370 * application cookie so that it does not get accidentely removed later,
6371 * if we're in cookie prefix mode
6372 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6373 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6374 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6375
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6376 delta = buffer_replace2(&req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6377 val_end += delta;
6378 next += delta;
6379 hdr_end += delta;
6380 hdr_next += delta;
6381 cur_hdr->len += delta;
6382 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6383
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6384 del_from = NULL;
6385 preserve_hdr = 1; /* we want to keep this cookie */
6386 }
6387 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6388 (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]6389 del_from = prev;
6390 }
6391 } else {
6392 /* This is not our cookie, so we must preserve it. But if we already
6393 * scheduled another cookie for removal, we cannot remove the
6394 * complete header, but we can remove the previous block itself.
6395 */
6396 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6397
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6398 if (del_from != NULL) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6399 int delta = del_hdr_value(&req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6400 if (att_beg >= del_from)
6401 att_beg += delta;
6402 if (att_end >= del_from)
6403 att_end += delta;
6404 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6405 val_end += delta;
6406 next += delta;
6407 hdr_end += delta;
6408 hdr_next += delta;
6409 cur_hdr->len += delta;
6410 http_msg_move_end(&txn->req, delta);
6411 prev = del_from;
6412 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6413 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6414 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6415
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6416 /* Look for the appsession cookie unless persistence must be ignored */
6417 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6418 int cmp_len, value_len;
6419 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6420
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6421 if (t->be->options2 & PR_O2_AS_PFX) {
6422 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6423 value_begin = att_beg + t->be->appsession_name_len;
6424 value_len = val_end - att_beg - t->be->appsession_name_len;
6425 } else {
6426 cmp_len = att_end - att_beg;
6427 value_begin = val_beg;
6428 value_len = val_end - val_beg;
6429 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6430
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6431 /* let's see if the cookie is our appcookie */
6432 if (cmp_len == t->be->appsession_name_len &&
6433 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6434 manage_client_side_appsession(t, value_begin, value_len);
6435 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6436 }
6437
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6438 /* continue with next cookie on this header line */
6439 att_beg = next;
6440 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6441
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6442 /* There are no more cookies on this line.
6443 * We may still have one (or several) marked for deletion at the
6444 * end of the line. We must do this now in two ways :
6445 * - if some cookies must be preserved, we only delete from the
6446 * mark to the end of line ;
6447 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6448 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6449 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6450 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6451 if (preserve_hdr) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6452 delta = del_hdr_value(&req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6453 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6454 cur_hdr->len += delta;
6455 } else {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6456 delta = buffer_replace2(&req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6457
6458 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6459 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6460 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6461 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6462 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6463 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6464 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6465 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6466 }
6467
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6468 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6469 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6470 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6471}
6472
6473
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6474/* Iterate the same filter through all response headers contained in <rtr>.
6475 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6476 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6477int 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]6478{
6479 char term;
6480 char *cur_ptr, *cur_end, *cur_next;
6481 int cur_idx, old_idx, last_hdr;
6482 struct http_txn *txn = &t->txn;
6483 struct hdr_idx_elem *cur_hdr;
6484 int len, delta;
6485
6486 last_hdr = 0;
6487
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6488 cur_next = rtr->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6489 old_idx = 0;
6490
6491 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6492 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6493 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6494 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6495 (exp->action == ACT_ALLOW ||
6496 exp->action == ACT_DENY))
6497 return 0;
6498
6499 cur_idx = txn->hdr_idx.v[old_idx].next;
6500 if (!cur_idx)
6501 break;
6502
6503 cur_hdr = &txn->hdr_idx.v[cur_idx];
6504 cur_ptr = cur_next;
6505 cur_end = cur_ptr + cur_hdr->len;
6506 cur_next = cur_end + cur_hdr->cr + 1;
6507
6508 /* Now we have one header between cur_ptr and cur_end,
6509 * and the next header starts at cur_next.
6510 */
6511
6512 /* The annoying part is that pattern matching needs
6513 * that we modify the contents to null-terminate all
6514 * strings before testing them.
6515 */
6516
6517 term = *cur_end;
6518 *cur_end = '\0';
6519
6520 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6521 switch (exp->action) {
6522 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6523 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6524 last_hdr = 1;
6525 break;
6526
6527 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6528 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6529 last_hdr = 1;
6530 break;
6531
6532 case ACT_REPLACE:
6533 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6534 delta = buffer_replace2(&rtr->buf, cur_ptr, cur_end, trash, len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6535 /* FIXME: if the user adds a newline in the replacement, the
6536 * index will not be recalculated for now, and the new line
6537 * will not be counted as a new header.
6538 */
6539
6540 cur_end += delta;
6541 cur_next += delta;
6542 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6543 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6544 break;
6545
6546 case ACT_REMOVE:
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6547 delta = buffer_replace2(&rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6548 cur_next += delta;
6549
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6550 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6551 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6552 txn->hdr_idx.used--;
6553 cur_hdr->len = 0;
6554 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6555 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6556 break;
6557
6558 }
6559 }
6560 if (cur_end)
6561 *cur_end = term; /* restore the string terminator */
6562
6563 /* keep the link from this header to next one in case of later
6564 * removal of next header.
6565 */
6566 old_idx = cur_idx;
6567 }
6568 return 0;
6569}
6570
6571
6572/* Apply the filter to the status line in the response buffer <rtr>.
6573 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6574 * or -1 if a replacement resulted in an invalid status line.
6575 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6576int 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]6577{
6578 char term;
6579 char *cur_ptr, *cur_end;
6580 int done;
6581 struct http_txn *txn = &t->txn;
6582 int len, delta;
6583
6584
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6585 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6586 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6587 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6588 (exp->action == ACT_ALLOW ||
6589 exp->action == ACT_DENY))
6590 return 0;
6591 else if (exp->action == ACT_REMOVE)
6592 return 0;
6593
6594 done = 0;
6595
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6596 cur_ptr = rtr->buf.p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6597 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6598
6599 /* Now we have the status line between cur_ptr and cur_end */
6600
6601 /* The annoying part is that pattern matching needs
6602 * that we modify the contents to null-terminate all
6603 * strings before testing them.
6604 */
6605
6606 term = *cur_end;
6607 *cur_end = '\0';
6608
6609 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6610 switch (exp->action) {
6611 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6612 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6613 done = 1;
6614 break;
6615
6616 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6617 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6618 done = 1;
6619 break;
6620
6621 case ACT_REPLACE:
6622 *cur_end = term; /* restore the string terminator */
6623 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6624 delta = buffer_replace2(&rtr->buf, cur_ptr, cur_end, trash, len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6625 /* FIXME: if the user adds a newline in the replacement, the
6626 * index will not be recalculated for now, and the new line
6627 * will not be counted as a new header.
6628 */
6629
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6630 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6631 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6632 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6633 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6634 cur_ptr, cur_end + 1,
6635 NULL, NULL);
6636 if (unlikely(!cur_end))
6637 return -1;
6638
6639 /* we have a full respnse and we know that we have either a CR
6640 * or an LF at <ptr>.
6641 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6642 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]6643 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]6644 /* there is no point trying this regex on headers */
6645 return 1;
6646 }
6647 }
6648 *cur_end = term; /* restore the string terminator */
6649 return done;
6650}
6651
6652
6653
6654/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6655 * 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]6656 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6657 * unparsable response.
6658 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6659int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6660{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6661 struct http_txn *txn = &s->txn;
6662 struct hdr_exp *exp;
6663
6664 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6665 int ret;
6666
6667 /*
6668 * The interleaving of transformations and verdicts
6669 * makes it difficult to decide to continue or stop
6670 * the evaluation.
6671 */
6672
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6673 if (txn->flags & TX_SVDENY)
6674 break;
6675
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6676 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6677 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6678 exp->action == ACT_PASS)) {
6679 exp = exp->next;
6680 continue;
6681 }
6682
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6683 /* if this filter had a condition, evaluate it now and skip to
6684 * next filter if the condition does not match.
6685 */
6686 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6687 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]6688 ret = acl_pass(ret);
6689 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6690 ret = !ret;
6691 if (!ret)
6692 continue;
6693 }
6694
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6695 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6696 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6697 if (unlikely(ret < 0))
6698 return -1;
6699
6700 if (likely(ret == 0)) {
6701 /* The filter did not match the response, it can be
6702 * iterated through all headers.
6703 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6704 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6705 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6706 }
6707 return 0;
6708}
6709
6710
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6711/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6712 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6713 * desirable to call it only when needed. This function is also used when we
6714 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6715 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6716void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6717{
6718 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6719 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6720 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6721 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6722 char *hdr_beg, *hdr_end, *hdr_next;
6723 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6724
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6725 /* Iterate through the headers.
6726 * we start with the start line.
6727 */
6728 old_idx = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]6729 hdr_next = res->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6730
6731 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6732 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6733 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6734
6735 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6736 hdr_beg = hdr_next;
6737 hdr_end = hdr_beg + cur_hdr->len;
6738 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6739
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6740 /* We have one full header between hdr_beg and hdr_end, and the
6741 * next header starts at hdr_next. We're only interested in
6742 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6743 */
6744
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6745 is_cookie2 = 0;
6746 prev = hdr_beg + 10;
6747 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6748 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6749 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6750 if (!val) {
6751 old_idx = cur_idx;
6752 continue;
6753 }
6754 is_cookie2 = 1;
6755 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6756 }
6757
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6758 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
6759 * <prev> points to the colon.
6760 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6761 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6762
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6763 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
6764 * check-cache is enabled) and we are not interested in checking
6765 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6766 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]6767 if (t->be->cookie_name == NULL &&
6768 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6769 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6770 return;
6771
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6772 /* OK so now we know we have to process this response cookie.
6773 * The format of the Set-Cookie header is slightly different
6774 * from the format of the Cookie header in that it does not
6775 * support the comma as a cookie delimiter (thus the header
6776 * cannot be folded) because the Expires attribute described in
6777 * the original Netscape's spec may contain an unquoted date
6778 * with a comma inside. We have to live with this because
6779 * many browsers don't support Max-Age and some browsers don't
6780 * support quoted strings. However the Set-Cookie2 header is
6781 * clean.
6782 *
6783 * We have to keep multiple pointers in order to support cookie
6784 * removal at the beginning, middle or end of header without
6785 * corrupting the header (in case of set-cookie2). A special
6786 * pointer, <scav> points to the beginning of the set-cookie-av
6787 * fields after the first semi-colon. The <next> pointer points
6788 * either to the end of line (set-cookie) or next unquoted comma
6789 * (set-cookie2). All of these headers are valid :
6790 *
6791 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
6792 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6793 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6794 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
6795 * | | | | | | | | | |
6796 * | | | | | | | | +-> next hdr_end <--+
6797 * | | | | | | | +------------> scav
6798 * | | | | | | +--------------> val_end
6799 * | | | | | +--------------------> val_beg
6800 * | | | | +----------------------> equal
6801 * | | | +------------------------> att_end
6802 * | | +----------------------------> att_beg
6803 * | +------------------------------> prev
6804 * +-----------------------------------------> hdr_beg
6805 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6806
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6807 for (; prev < hdr_end; prev = next) {
6808 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6809
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6810 /* find att_beg */
6811 att_beg = prev + 1;
6812 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6813 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6814
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6815 /* find att_end : this is the first character after the last non
6816 * space before the equal. It may be equal to hdr_end.
6817 */
6818 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6819
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6820 while (equal < hdr_end) {
6821 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
6822 break;
6823 if (http_is_spht[(unsigned char)*equal++])
6824 continue;
6825 att_end = equal;
6826 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6827
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6828 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6829 * is between <att_beg> and <equal>, both may be identical.
6830 */
6831
6832 /* look for end of cookie if there is an equal sign */
6833 if (equal < hdr_end && *equal == '=') {
6834 /* look for the beginning of the value */
6835 val_beg = equal + 1;
6836 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6837 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6838
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6839 /* find the end of the value, respecting quotes */
6840 next = find_cookie_value_end(val_beg, hdr_end);
6841
6842 /* make val_end point to the first white space or delimitor after the value */
6843 val_end = next;
6844 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6845 val_end--;
6846 } else {
6847 /* <equal> points to next comma, semi-colon or EOL */
6848 val_beg = val_end = next = equal;
6849 }
6850
6851 if (next < hdr_end) {
6852 /* Set-Cookie2 supports multiple cookies, and <next> points to
6853 * a colon or semi-colon before the end. So skip all attr-value
6854 * pairs and look for the next comma. For Set-Cookie, since
6855 * commas are permitted in values, skip to the end.
6856 */
6857 if (is_cookie2)
6858 next = find_hdr_value_end(next, hdr_end);
6859 else
6860 next = hdr_end;
6861 }
6862
6863 /* Now everything is as on the diagram above */
6864
6865 /* Ignore cookies with no equal sign */
6866 if (equal == val_end)
6867 continue;
6868
6869 /* If there are spaces around the equal sign, we need to
6870 * strip them otherwise we'll get trouble for cookie captures,
6871 * or even for rewrites. Since this happens extremely rarely,
6872 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6873 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6874 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6875 int stripped_before = 0;
6876 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6877
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6878 if (att_end != equal) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6879 stripped_before = buffer_replace2(&res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6880 equal += stripped_before;
6881 val_beg += stripped_before;
6882 }
6883
6884 if (val_beg > equal + 1) {
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6885 stripped_after = buffer_replace2(&res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6886 val_beg += stripped_after;
6887 stripped_before += stripped_after;
6888 }
6889
6890 val_end += stripped_before;
6891 next += stripped_before;
6892 hdr_end += stripped_before;
6893 hdr_next += stripped_before;
6894 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]6895 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6896 }
6897
6898 /* First, let's see if we want to capture this cookie. We check
6899 * that we don't already have a server side cookie, because we
6900 * can only capture one. Also as an optimisation, we ignore
6901 * cookies shorter than the declared name.
6902 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6903 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]6904 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6905 (val_end - att_beg >= t->fe->capture_namelen) &&
6906 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6907 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]6908 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6909 Alert("HTTP logging : out of memory.\n");
6910 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]6911 else {
6912 if (log_len > t->fe->capture_len)
6913 log_len = t->fe->capture_len;
6914 memcpy(txn->srv_cookie, att_beg, log_len);
6915 txn->srv_cookie[log_len] = 0;
6916 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6917 }
6918
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6919 srv = target_srv(&t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6920 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6921 if (!(t->flags & SN_IGNORE_PRST) &&
6922 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6923 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6924 /* assume passive cookie by default */
6925 txn->flags &= ~TX_SCK_MASK;
6926 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6927
6928 /* If the cookie is in insert mode on a known server, we'll delete
6929 * this occurrence because we'll insert another one later.
6930 * 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]6931 * a direct access.
6932 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6933 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]6934 /* The "preserve" flag was set, we don't want to touch the
6935 * server's cookie.
6936 */
6937 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6938 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
6939 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6940 /* this cookie must be deleted */
6941 if (*prev == ':' && next == hdr_end) {
6942 /* whole header */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6943 delta = buffer_replace2(&res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6944 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6945 txn->hdr_idx.used--;
6946 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6947 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6948 hdr_next += delta;
6949 http_msg_move_end(&txn->rsp, delta);
6950 /* note: while both invalid now, <next> and <hdr_end>
6951 * are still equal, so the for() will stop as expected.
6952 */
6953 } else {
6954 /* just remove the value */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6955 int delta = del_hdr_value(&res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6956 next = prev;
6957 hdr_end += delta;
6958 hdr_next += delta;
6959 cur_hdr->len += delta;
6960 http_msg_move_end(&txn->rsp, delta);
6961 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6962 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6963 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6964 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6965 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6966 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6967 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6968 * with this server since we know it.
6969 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6970 delta = buffer_replace2(&res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6971 next += delta;
6972 hdr_end += delta;
6973 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6974 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6975 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6976
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6977 txn->flags &= ~TX_SCK_MASK;
6978 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6979 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]6980 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6981 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6982 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6983 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6984 delta = buffer_replace2(&res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6985 next += delta;
6986 hdr_end += delta;
6987 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6988 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6989 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6990
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6991 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6992 txn->flags &= ~TX_SCK_MASK;
6993 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6994 }
6995 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6996 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
6997 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6998 int cmp_len, value_len;
6999 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7000
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7001 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7002 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7003 value_begin = att_beg + t->be->appsession_name_len;
7004 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]7005 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7006 cmp_len = att_end - att_beg;
7007 value_begin = val_beg;
7008 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7009 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7010
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7011 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7012 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7013 /* free a possibly previously allocated memory */
7014 pool_free2(apools.sessid, txn->sessid);
7015
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7016 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7017 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7018 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7019 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7020 return;
7021 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7022 memcpy(txn->sessid, value_begin, value_len);
7023 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7024 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7025 }
7026 /* that's done for this cookie, check the next one on the same
7027 * line when next != hdr_end (only if is_cookie2).
7028 */
7029 }
7030 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7031 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7032 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7033
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7034 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7035 appsess *asession = NULL;
7036 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7037 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7038 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7039 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7040 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7041 Alert("Not enough Memory process_srv():asession:calloc().\n");
7042 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7043 return;
7044 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7045 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7046
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7047 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7048 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7049 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]7050 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7051 return;
7052 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7053 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7054 asession->sessid[t->be->appsession_len] = 0;
7055
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7056 server_id_len = strlen(target_srv(&t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7057 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7058 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7059 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]7060 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7061 return;
7062 }
7063 asession->serverid[0] = '\0';
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7064 memcpy(asession->serverid, target_srv(&t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7065
7066 asession->request_count = 0;
7067 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7068 }
7069
7070 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7071 asession->request_count++;
7072 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7073}
7074
7075
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7076/*
7077 * Check if response is cacheable or not. Updates t->flags.
7078 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7079void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7080{
7081 struct http_txn *txn = &t->txn;
7082 char *p1, *p2;
7083
7084 char *cur_ptr, *cur_end, *cur_next;
7085 int cur_idx;
7086
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7087 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7088 return;
7089
7090 /* Iterate through the headers.
7091 * we start with the start line.
7092 */
7093 cur_idx = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7094 cur_next = rtr->buf.p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7095
7096 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7097 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7098 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7099
7100 cur_hdr = &txn->hdr_idx.v[cur_idx];
7101 cur_ptr = cur_next;
7102 cur_end = cur_ptr + cur_hdr->len;
7103 cur_next = cur_end + cur_hdr->cr + 1;
7104
7105 /* We have one full header between cur_ptr and cur_end, and the
7106 * next header starts at cur_next. We're only interested in
7107 * "Cookie:" headers.
7108 */
7109
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7110 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7111 if (val) {
7112 if ((cur_end - (cur_ptr + val) >= 8) &&
7113 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7114 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7115 return;
7116 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7117 }
7118
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7119 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7120 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7121 continue;
7122
7123 /* OK, right now we know we have a cache-control header at cur_ptr */
7124
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7125 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7126
7127 if (p1 >= cur_end) /* no more info */
7128 continue;
7129
7130 /* p1 is at the beginning of the value */
7131 p2 = p1;
7132
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7133 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7134 p2++;
7135
7136 /* we have a complete value between p1 and p2 */
7137 if (p2 < cur_end && *p2 == '=') {
7138 /* we have something of the form no-cache="set-cookie" */
7139 if ((cur_end - p1 >= 21) &&
7140 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7141 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7142 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7143 continue;
7144 }
7145
7146 /* OK, so we know that either p2 points to the end of string or to a comma */
7147 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7148 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7149 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7150 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 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 return;
7153 }
7154
7155 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7156 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7157 continue;
7158 }
7159 }
7160}
7161
7162
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7163/*
7164 * Try to retrieve a known appsession in the URI, then the associated server.
7165 * If the server is found, it's assigned to the session.
7166 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7167void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7168{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7169 char *end_params, *first_param, *cur_param, *next_param;
7170 char separator;
7171 int value_len;
7172
7173 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7174
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7175 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7176 (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]7177 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7178 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7179
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7180 first_param = NULL;
7181 switch (mode) {
7182 case PR_O2_AS_M_PP:
7183 first_param = memchr(begin, ';', len);
7184 break;
7185 case PR_O2_AS_M_QS:
7186 first_param = memchr(begin, '?', len);
7187 break;
7188 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7189
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7190 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7191 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7192 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7193
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7194 switch (mode) {
7195 case PR_O2_AS_M_PP:
7196 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7197 end_params = (char *) begin + len;
7198 }
7199 separator = ';';
7200 break;
7201 case PR_O2_AS_M_QS:
7202 end_params = (char *) begin + len;
7203 separator = '&';
7204 break;
7205 default:
7206 /* unknown mode, shouldn't happen */
7207 return;
7208 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7209
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7210 cur_param = next_param = end_params;
7211 while (cur_param > first_param) {
7212 cur_param--;
7213 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7214 /* let's see if this is the appsession parameter */
7215 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7216 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7217 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7218 /* Cool... it's the right one */
7219 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7220 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7221 if (value_len > 0) {
7222 manage_client_side_appsession(t, cur_param, value_len);
7223 }
7224 break;
7225 }
7226 next_param = cur_param;
7227 }
7228 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7229#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7230 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7231 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7232#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7233}
7234
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7235/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7236 * 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]7237 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7238 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7239 * 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]7240 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7241 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7242 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7243 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7244int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7245{
7246 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7247 struct http_msg *msg = &txn->req;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7248 const char *uri = msg->buf->buf.p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7249 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7250
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7251 if (!uri_auth)
7252 return 0;
7253
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7254 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]7255 return 0;
7256
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7257 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7258 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7259
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7260 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7261 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7262 return 0;
7263
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7264 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7265 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7266 return 0;
7267
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7268 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7269 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7270 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7271 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7272 break;
7273 }
7274 h++;
7275 }
7276
7277 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7278 h = uri + uri_auth->uri_len;
7279 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7280 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7281 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7282 break;
7283 }
7284 h++;
7285 }
7286 }
7287
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7288 h = uri + uri_auth->uri_len;
7289 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7290 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7291 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7292 break;
7293 }
7294 h++;
7295 }
7296
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7297 h = uri + uri_auth->uri_len;
7298 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7299 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7300 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7301 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7302 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7303 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7304 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7305 si->applet.ctx.stats.st_code = i;
7306 break;
7307 }
7308 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7309 break;
7310 }
7311 h++;
7312 }
7313
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7314 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7315
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7316 return 1;
7317}
7318
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7319/*
7320 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7321 * By default it tries to report the error position as msg->err_pos. However if
7322 * this one is not set, it will then report msg->next, which is the last known
7323 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7324 * displays buffers as a contiguous area starting at buf->buf.p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7325 */
7326void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7327 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7328 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7329{
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7330 struct channel *buf = msg->buf;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7331 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7332
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7333 es->len = MIN(buf->buf.i, sizeof(es->buf));
7334 len1 = buf->buf.data + buf->buf.size - buf->buf.p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7335 len1 = MIN(len1, es->len);
7336 len2 = es->len - len1; /* remaining data if buffer wraps */
7337
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7338 memcpy(es->buf, buf->buf.p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7339 if (len2)
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7340 memcpy(es->buf + len1, buf->buf.data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7341
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7342 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7343 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7344 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7345 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7346
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7347 es->when = date; // user-visible date
7348 es->sid = s->uniq_id;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7349 es->srv = target_srv(&s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7350 es->oe = other_end;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7351 es->src = s->req->prod->conn.addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7352 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7353 es->ev_id = error_snapshot_id++;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7354 es->b_flags = buf->flags;
7355 es->s_flags = s->flags;
7356 es->t_flags = s->txn.flags;
7357 es->m_flags = msg->flags;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7358 es->b_out = buf->buf.o;
7359 es->b_wrap = buf->buf.data + buf->buf.size - buf->buf.p;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7360 es->b_tot = buf->total;
7361 es->m_clen = msg->chunk_len;
7362 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7363}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7364
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7365/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7366 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7367 * performed over the whole headers. Otherwise it must contain a valid header
7368 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7369 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7370 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7371 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7372 * -1.
7373 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7374 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7375unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7376 struct hdr_idx *idx, int occ,
7377 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7378{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7379 struct hdr_ctx local_ctx;
7380 char *ptr_hist[MAX_HDR_HISTORY];
7381 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7382 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7383 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7384
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7385 if (!ctx) {
7386 local_ctx.idx = 0;
7387 ctx = &local_ctx;
7388 }
7389
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7390 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7391 /* search from the beginning */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7392 while (http_find_header2(hname, hlen, msg->buf->buf.p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7393 occ--;
7394 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7395 *vptr = ctx->line + ctx->val;
7396 *vlen = ctx->vlen;
7397 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7398 }
7399 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7400 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7401 }
7402
7403 /* negative occurrence, we scan all the list then walk back */
7404 if (-occ > MAX_HDR_HISTORY)
7405 return 0;
7406
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7407 found = hist_ptr = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7408 while (http_find_header2(hname, hlen, msg->buf->buf.p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7409 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7410 len_hist[hist_ptr] = ctx->vlen;
7411 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7412 hist_ptr = 0;
7413 found++;
7414 }
7415 if (-occ > found)
7416 return 0;
7417 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7418 * find occurrence -occ, so we have to check [hist_ptr+occ].
7419 */
7420 hist_ptr += occ;
7421 if (hist_ptr >= MAX_HDR_HISTORY)
7422 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7423 *vptr = ptr_hist[hist_ptr];
7424 *vlen = len_hist[hist_ptr];
7425 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7426}
7427
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7428/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7429 * Print a debug line with a header. Always stop at the first CR or LF char,
7430 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7431 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7432 */
7433void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7434{
7435 int len, max;
7436 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]7437 dir, (unsigned short)si_fd(t->req->prod), (unsigned short)si_fd(t->req->cons));
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7438
7439 for (max = 0; start + max < end; max++)
7440 if (start[max] == '\r' || start[max] == '\n')
7441 break;
7442
7443 UBOUND(max, trashlen - len - 3);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7444 len += strlcpy2(trash + len, start, max + 1);
7445 trash[len++] = '\n';
Willy Tarreau21337822012-04-29 14:11:38 +0200[diff] [blame]7446 if (write(1, trash, len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7447}
7448
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7449/*
7450 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7451 * the required fields are properly allocated and that we only need to (re)init
7452 * them. This should be used before processing any new request.
7453 */
7454void http_init_txn(struct session *s)
7455{
7456 struct http_txn *txn = &s->txn;
7457 struct proxy *fe = s->fe;
7458
7459 txn->flags = 0;
7460 txn->status = -1;
7461
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7462 global.req_count++;
7463
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7464 txn->cookie_first_date = 0;
7465 txn->cookie_last_date = 0;
7466
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7467 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7468 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7469 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7470 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7471 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7472 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7473 txn->req.chunk_len = 0LL;
7474 txn->req.body_len = 0LL;
7475 txn->rsp.chunk_len = 0LL;
7476 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7477 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7478 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]7479 txn->req.buf = s->req;
7480 txn->rsp.buf = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7481
7482 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7483
7484 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7485 if (fe->options2 & PR_O2_REQBUG_OK)
7486 txn->req.err_pos = -1; /* let buggy requests pass */
7487
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7488 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7489 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7490
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7491 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7492 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7493
7494 if (txn->hdr_idx.v)
7495 hdr_idx_init(&txn->hdr_idx);
7496}
7497
7498/* to be used at the end of a transaction */
7499void http_end_txn(struct session *s)
7500{
7501 struct http_txn *txn = &s->txn;
7502
7503 /* these ones will have been dynamically allocated */
7504 pool_free2(pool2_requri, txn->uri);
7505 pool_free2(pool2_capture, txn->cli_cookie);
7506 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7507 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7508 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7509
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7510 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7511 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7512 txn->uri = NULL;
7513 txn->srv_cookie = NULL;
7514 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7515
7516 if (txn->req.cap) {
7517 struct cap_hdr *h;
7518 for (h = s->fe->req_cap; h; h = h->next)
7519 pool_free2(h->pool, txn->req.cap[h->index]);
7520 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7521 }
7522
7523 if (txn->rsp.cap) {
7524 struct cap_hdr *h;
7525 for (h = s->fe->rsp_cap; h; h = h->next)
7526 pool_free2(h->pool, txn->rsp.cap[h->index]);
7527 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7528 }
7529
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7530}
7531
7532/* to be used at the end of a transaction to prepare a new one */
7533void http_reset_txn(struct session *s)
7534{
7535 http_end_txn(s);
7536 http_init_txn(s);
7537
7538 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7539 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7540 session_del_srv_conn(s);
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]7541 clear_target(&s->target);
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7542 /* re-init store persistence */
7543 s->store_count = 0;
7544
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7545 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7546
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7547 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7548
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7549 /* We must trim any excess data from the response buffer, because we
7550 * may have blocked an invalid response from a server that we don't
7551 * want to accidentely forward once we disable the analysers, nor do
7552 * we want those data to come along with next response. A typical
7553 * example of such data would be from a buggy server responding to
7554 * a HEAD with some data, or sending more than the advertised
7555 * content-length.
7556 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7557 if (unlikely(s->rep->buf.i))
7558 s->rep->buf.i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7559
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7560 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7561 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7562
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7563 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7564 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7565
7566 s->req->rex = TICK_ETERNITY;
7567 s->req->wex = TICK_ETERNITY;
7568 s->req->analyse_exp = TICK_ETERNITY;
7569 s->rep->rex = TICK_ETERNITY;
7570 s->rep->wex = TICK_ETERNITY;
7571 s->rep->analyse_exp = TICK_ETERNITY;
7572}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7573
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7574void free_http_req_rules(struct list *r) {
7575 struct http_req_rule *tr, *pr;
7576
7577 list_for_each_entry_safe(pr, tr, r, list) {
7578 LIST_DEL(&pr->list);
7579 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7580 free(pr->http_auth.realm);
7581
7582 free(pr);
7583 }
7584}
7585
7586struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7587{
7588 struct http_req_rule *rule;
7589 int cur_arg;
7590
7591 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7592 if (!rule) {
7593 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7594 return NULL;
7595 }
7596
7597 if (!*args[0]) {
7598 goto req_error_parsing;
7599 } else if (!strcmp(args[0], "allow")) {
7600 rule->action = HTTP_REQ_ACT_ALLOW;
7601 cur_arg = 1;
7602 } else if (!strcmp(args[0], "deny")) {
7603 rule->action = HTTP_REQ_ACT_DENY;
7604 cur_arg = 1;
7605 } else if (!strcmp(args[0], "auth")) {
7606 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7607 cur_arg = 1;
7608
7609 while(*args[cur_arg]) {
7610 if (!strcmp(args[cur_arg], "realm")) {
7611 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7612 cur_arg+=2;
7613 continue;
7614 } else
7615 break;
7616 }
7617 } else {
7618req_error_parsing:
7619 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7620 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7621 return NULL;
7622 }
7623
7624 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7625 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7626 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7627
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7628 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7629 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7630 file, linenum, args[0], errmsg);
7631 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7632 return NULL;
7633 }
7634 rule->cond = cond;
7635 }
7636 else if (*args[cur_arg]) {
7637 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7638 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7639 file, linenum, args[0], args[cur_arg]);
7640 return NULL;
7641 }
7642
7643 return rule;
7644}
7645
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7646/************************************************************************/
7647/* The code below is dedicated to ACL parsing and matching */
7648/************************************************************************/
7649
7650
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7651/* This function ensures that the prerequisites for an L7 fetch are ready,
7652 * which means that a request or response is ready. If some data is missing,
7653 * 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]7654 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7655 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7656 *
7657 * The function returns :
7658 * 0 if some data is missing or if the requested data cannot be fetched
7659 * -1 if it is certain that we'll never have any HTTP message there
7660 * 1 if an HTTP message is ready
7661 */
7662static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7663acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7664 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7665{
7666 struct http_txn *txn = l7;
7667 struct http_msg *msg = &txn->req;
7668
7669 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7670 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7671 */
7672
7673 if (unlikely(!s || !txn))
7674 return 0;
7675
7676 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7677 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7678
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7679 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7680 if (unlikely(!s->req))
7681 return 0;
7682
7683 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7684 if ((msg->msg_state == HTTP_MSG_ERROR) ||
7685 buffer_full(&s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7686 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7687 return -1;
7688 }
7689
7690 /* Try to decode HTTP request */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7691 if (likely(msg->next < s->req->buf.i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7692 http_msg_analyzer(msg, &txn->hdr_idx);
7693
7694 /* Still no valid request ? */
7695 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7696 if ((msg->msg_state == HTTP_MSG_ERROR) ||
7697 buffer_full(&s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7698 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7699 return -1;
7700 }
7701 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7702 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7703 return 0;
7704 }
7705
7706 /* OK we just got a valid HTTP request. We have some minor
7707 * preparation to perform so that further checks can rely
7708 * on HTTP tests.
7709 */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7710 txn->meth = find_http_meth(msg->buf->buf.p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7711 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7712 s->flags |= SN_REDIRECTABLE;
7713
7714 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7715 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7716 return -1;
7717 }
7718 }
7719
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7720 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7721 return 0; /* data might have moved and indexes changed */
7722
7723 /* otherwise everything's ready for the request */
7724 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7725 else {
7726 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7727 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7728 return 0;
7729 }
7730
7731 /* everything's OK */
7732 return 1;
7733}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7734
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7735#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7736 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]7737
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7738#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7739 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]7740
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7741
7742/* 1. Check on METHOD
7743 * We use the pre-parsed method if it is known, and store its number as an
7744 * integer. If it is unknown, we use the pointer and the length.
7745 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7746static 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]7747{
7748 int len, meth;
7749
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7750 len = strlen(*text);
7751 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7752
7753 pattern->val.i = meth;
7754 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7755 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7756 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]7757 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7758 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7759 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7760 pattern->len = len;
7761 }
7762 return 1;
7763}
7764
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7765/* This function fetches the method of current HTTP request and stores
7766 * it in the global pattern struct as a chunk. There are two possibilities :
7767 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
7768 * in <len> and <ptr> is NULL ;
7769 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
7770 * <len> to its length.
7771 * This is intended to be used with acl_match_meth() only.
7772 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7773static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7774acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7775 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7776{
7777 int meth;
7778 struct http_txn *txn = l7;
7779
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7780 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7781
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7782 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7783 smp->type = SMP_T_UINT;
7784 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7785 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7786 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
7787 /* ensure the indexes are not affected */
7788 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7789 smp->type = SMP_T_CSTR;
7790 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7791 smp->data.str.str = txn->req.buf->buf.p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7792 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7793 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7794 return 1;
7795}
7796
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7797/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7798static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7799{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7800 int icase;
7801
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7802
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7803 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7804 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7805 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7806 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7807 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7808 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7809
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7810 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
7811 if (pattern->val.i != HTTP_METH_OTHER)
7812 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7813
7814 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7815 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7816 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7817
7818 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7819 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
7820 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7821 return ACL_PAT_FAIL;
7822 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7823}
7824
7825/* 2. Check on Request/Status Version
7826 * We simply compare strings here.
7827 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7828static 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]7829{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7830 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7831 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]7832 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7833 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7834 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7835 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7836 return 1;
7837}
7838
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7839static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7840acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7841 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7842{
7843 struct http_txn *txn = l7;
7844 char *ptr;
7845 int len;
7846
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7847 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7848
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7849 len = txn->req.sl.rq.v_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7850 ptr = txn->req.buf->buf.p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7851
7852 while ((len-- > 0) && (*ptr++ != '/'));
7853 if (len <= 0)
7854 return 0;
7855
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7856 smp->type = SMP_T_CSTR;
7857 smp->data.str.str = ptr;
7858 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7859
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7860 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7861 return 1;
7862}
7863
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7864static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7865acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7866 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7867{
7868 struct http_txn *txn = l7;
7869 char *ptr;
7870 int len;
7871
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7872 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7873
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7874 len = txn->rsp.sl.st.v_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7875 ptr = txn->rsp.buf->buf.p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7876
7877 while ((len-- > 0) && (*ptr++ != '/'));
7878 if (len <= 0)
7879 return 0;
7880
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7881 smp->type = SMP_T_CSTR;
7882 smp->data.str.str = ptr;
7883 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7884
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7885 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7886 return 1;
7887}
7888
7889/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7890static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7891acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7892 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7893{
7894 struct http_txn *txn = l7;
7895 char *ptr;
7896 int len;
7897
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7898 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7899
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7900 len = txn->rsp.sl.st.c_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7901 ptr = txn->rsp.buf->buf.p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7902
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7903 smp->type = SMP_T_UINT;
7904 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7905 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7906 return 1;
7907}
7908
7909/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7910static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7911smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7912 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7913{
7914 struct http_txn *txn = l7;
7915
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7916 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7917
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7918 smp->type = SMP_T_CSTR;
7919 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]7920 smp->data.str.str = txn->req.buf->buf.p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7921 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7922 return 1;
7923}
7924
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7925static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7926smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7927 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7928{
7929 struct http_txn *txn = l7;
7930
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7931 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7932
7933 /* Parse HTTP request */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7934 url2sa(txn->req.buf->buf.p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn.addr.to);
7935 if (((struct sockaddr_in *)&l4->req->cons->conn.addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]7936 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7937 smp->type = SMP_T_IPV4;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7938 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn.addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7939
7940 /*
7941 * If we are parsing url in frontend space, we prepare backend stage
7942 * to not parse again the same url ! optimization lazyness...
7943 */
7944 if (px->options & PR_O_HTTP_PROXY)
7945 l4->flags |= SN_ADDR_SET;
7946
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7947 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7948 return 1;
7949}
7950
7951static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7952smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7953 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7954{
7955 struct http_txn *txn = l7;
7956
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7957 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7958
7959 /* Same optimization as url_ip */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7960 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]7961 smp->type = SMP_T_UINT;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7962 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]7963
7964 if (px->options & PR_O_HTTP_PROXY)
7965 l4->flags |= SN_ADDR_SET;
7966
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7967 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7968 return 1;
7969}
7970
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7971/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
7972 * Accepts an optional argument of type string containing the header field name,
7973 * and an optional argument of type signed or unsigned integer to request an
7974 * explicit occurrence of the header. Note that in the event of a missing name,
7975 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7976 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7977static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7978smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7979 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7980{
7981 struct http_txn *txn = l7;
7982 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7983 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7984 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]7985 int occ = 0;
7986 const char *name_str = NULL;
7987 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7988
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7989 if (args) {
7990 if (args[0].type != ARGT_STR)
7991 return 0;
7992 name_str = args[0].data.str.str;
7993 name_len = args[0].data.str.len;
7994
7995 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
7996 occ = args[1].data.uint;
7997 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7998
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7999 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8000
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8001 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8002 /* search for header from the beginning */
8003 ctx->idx = 0;
8004
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8005 if (!occ && !(opt & SMP_OPT_ITERATE))
8006 /* no explicit occurrence and single fetch => last header by default */
8007 occ = -1;
8008
8009 if (!occ)
8010 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8011 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8012
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8013 smp->type = SMP_T_CSTR;
8014 smp->flags |= SMP_F_VOL_HDR;
8015 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]8016 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8017
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8018 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8019 return 0;
8020}
8021
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8022/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8023 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8024 */
8025static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8026smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8027 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8028{
8029 struct http_txn *txn = l7;
8030 struct hdr_idx *idx = &txn->hdr_idx;
8031 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8032 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]8033 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8034
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8035 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8036 return 0;
8037
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8038 CHECK_HTTP_MESSAGE_FIRST();
8039
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8040 ctx.idx = 0;
8041 cnt = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8042 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]8043 cnt++;
8044
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8045 smp->type = SMP_T_UINT;
8046 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8047 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8048 return 1;
8049}
8050
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8051/* Fetch an HTTP header's integer value. The integer value is returned. It
8052 * takes a mandatory argument of type string and an optional one of type int
8053 * to designate a specific occurrence. It returns an unsigned integer, which
8054 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8055 */
8056static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8057smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8058 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8059{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8060 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8061
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8062 if (ret > 0) {
8063 smp->type = SMP_T_UINT;
8064 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8065 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8066
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8067 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8068}
8069
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8070/* Fetch an HTTP header's integer value. The integer value is returned. It
8071 * takes a mandatory argument of type string and an optional one of type int
8072 * to designate a specific occurrence. It returns an IPv4 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8073 */
8074static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8075smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8076 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8077{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8078 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8079
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8080 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8081 smp->type = SMP_T_IPV4;
8082 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4))
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8083 break;
8084 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8085 if (!(smp->flags & SMP_F_NOT_LAST))
8086 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8087 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8088 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8089}
8090
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8091/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8092 * the first '/' after the possible hostname, and ends before the possible '?'.
8093 */
8094static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8095smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8096 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8097{
8098 struct http_txn *txn = l7;
8099 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8100
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8101 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8102
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8103 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]8104 ptr = http_get_path(txn);
8105 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8106 return 0;
8107
8108 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8109 smp->type = SMP_T_CSTR;
8110 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8111
8112 while (ptr < end && *ptr != '?')
8113 ptr++;
8114
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8115 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8116 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8117 return 1;
8118}
8119
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8120/* This produces a concatenation of the first occurrence of the Host header
8121 * followed by the path component if it begins with a slash ('/'). This means
8122 * that '*' will not be added, resulting in exactly the first Host entry.
8123 * If no Host header is found, then the path is returned as-is. The returned
8124 * value is stored in the trash so it does not need to be marked constant.
8125 */
8126static int
8127smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8128 const struct arg *args, struct sample *smp)
8129{
8130 struct http_txn *txn = l7;
8131 char *ptr, *end, *beg;
8132 struct hdr_ctx ctx;
8133
8134 CHECK_HTTP_MESSAGE_FIRST();
8135
8136 ctx.idx = 0;
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8137 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]8138 !ctx.vlen)
8139 return smp_fetch_path(px, l4, l7, opt, args, smp);
8140
8141 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8142 memcpy(trash, ctx.line + ctx.val, ctx.vlen);
8143 smp->type = SMP_T_STR;
8144 smp->data.str.str = trash;
8145 smp->data.str.len = ctx.vlen;
8146
8147 /* now retrieve the path */
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8148 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]8149 beg = http_get_path(txn);
8150 if (!beg)
8151 beg = end;
8152
8153 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8154
8155 if (beg < ptr && *beg == '/') {
8156 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8157 smp->data.str.len += ptr - beg;
8158 }
8159
8160 smp->flags = SMP_F_VOL_1ST;
8161 return 1;
8162}
8163
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8164static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8165acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8166 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8167{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8168 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8169 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8170 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8171
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8172 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8173
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8174 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8175 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8176 return 1;
8177}
8178
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8179/* return a valid test if the current request is the first one on the connection */
8180static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8181acl_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]8182 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8183{
8184 if (!s)
8185 return 0;
8186
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8187 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8188 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8189 return 1;
8190}
8191
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8192/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8193static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8194acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8195 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8196{
8197
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8198 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8199 return 0;
8200
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8201 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8202
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8203 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8204 return 0;
8205
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8206 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8207 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]8208 return 1;
8209}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8210
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8211/* Accepts exactly 1 argument of type userlist */
8212static int
8213acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8214 const struct arg *args, struct sample *smp)
8215{
8216
8217 if (!args || args->type != ARGT_USR)
8218 return 0;
8219
8220 CHECK_HTTP_MESSAGE_FIRST();
8221
8222 if (!get_http_auth(l4))
8223 return 0;
8224
8225 /* acl_match_auth() will need several information at once */
8226 smp->ctx.a[0] = args->data.usr; /* user list */
8227 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8228 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8229
8230 /* if the user does not belong to the userlist or has a wrong password,
8231 * report that it unconditionally does not match. Otherwise we return
8232 * a non-zero integer which will be ignored anyway since all the params
8233 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8234 */
8235 smp->type = SMP_T_BOOL;
8236 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8237 if (smp->data.uint)
8238 smp->type = SMP_T_UINT;
8239
8240 return 1;
8241}
8242
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8243/* Try to find the next occurrence of a cookie name in a cookie header value.
8244 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8245 * the cookie value is returned into *value and *value_l, and the function
8246 * returns a pointer to the next pointer to search from if the value was found.
8247 * Otherwise if the cookie was not found, NULL is returned and neither value
8248 * nor value_l are touched. The input <hdr> string should first point to the
8249 * header's value, and the <hdr_end> pointer must point to the first character
8250 * not part of the value. <list> must be non-zero if value may represent a list
8251 * of values (cookie headers). This makes it faster to abort parsing when no
8252 * list is expected.
8253 */
8254static char *
8255extract_cookie_value(char *hdr, const char *hdr_end,
8256 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8257 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8258{
8259 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8260 char *next;
8261
8262 /* we search at least a cookie name followed by an equal, and more
8263 * generally something like this :
8264 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8265 */
8266 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8267 /* Iterate through all cookies on this line */
8268
8269 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8270 att_beg++;
8271
8272 /* find att_end : this is the first character after the last non
8273 * space before the equal. It may be equal to hdr_end.
8274 */
8275 equal = att_end = att_beg;
8276
8277 while (equal < hdr_end) {
8278 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8279 break;
8280 if (http_is_spht[(unsigned char)*equal++])
8281 continue;
8282 att_end = equal;
8283 }
8284
8285 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8286 * is between <att_beg> and <equal>, both may be identical.
8287 */
8288
8289 /* look for end of cookie if there is an equal sign */
8290 if (equal < hdr_end && *equal == '=') {
8291 /* look for the beginning of the value */
8292 val_beg = equal + 1;
8293 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8294 val_beg++;
8295
8296 /* find the end of the value, respecting quotes */
8297 next = find_cookie_value_end(val_beg, hdr_end);
8298
8299 /* make val_end point to the first white space or delimitor after the value */
8300 val_end = next;
8301 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8302 val_end--;
8303 } else {
8304 val_beg = val_end = next = equal;
8305 }
8306
8307 /* We have nothing to do with attributes beginning with '$'. However,
8308 * they will automatically be removed if a header before them is removed,
8309 * since they're supposed to be linked together.
8310 */
8311 if (*att_beg == '$')
8312 continue;
8313
8314 /* Ignore cookies with no equal sign */
8315 if (equal == next)
8316 continue;
8317
8318 /* Now we have the cookie name between att_beg and att_end, and
8319 * its value between val_beg and val_end.
8320 */
8321
8322 if (att_end - att_beg == cookie_name_l &&
8323 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8324 /* let's return this value and indicate where to go on from */
8325 *value = val_beg;
8326 *value_l = val_end - val_beg;
8327 return next + 1;
8328 }
8329
8330 /* Set-Cookie headers only have the name in the first attr=value part */
8331 if (!list)
8332 break;
8333 }
8334
8335 return NULL;
8336}
8337
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8338/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8339 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8340 * 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]8341 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8342 * 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]8343 * Accepts exactly 1 argument of type string. If the input options indicate
8344 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8345 */
8346static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8347smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8348 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8349{
8350 struct http_txn *txn = l7;
8351 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8352 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8353 const struct http_msg *msg;
8354 const char *hdr_name;
8355 int hdr_name_len;
8356 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8357 int occ = 0;
8358 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8359
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8360 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8361 return 0;
8362
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8363 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8364
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8365 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8366 msg = &txn->req;
8367 hdr_name = "Cookie";
8368 hdr_name_len = 6;
8369 } else {
8370 msg = &txn->rsp;
8371 hdr_name = "Set-Cookie";
8372 hdr_name_len = 10;
8373 }
8374
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8375 if (!occ && !(opt & SMP_OPT_ITERATE))
8376 /* no explicit occurrence and single fetch => last cookie by default */
8377 occ = -1;
8378
8379 /* OK so basically here, either we want only one value and it's the
8380 * last one, or we want to iterate over all of them and we fetch the
8381 * next one.
8382 */
8383
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8384 sol = msg->buf->buf.p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8385 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8386 /* search for the header from the beginning, we must first initialize
8387 * the search parameters.
8388 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8389 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8390 ctx->idx = 0;
8391 }
8392
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8393 smp->flags |= SMP_F_VOL_HDR;
8394
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8395 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8396 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8397 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8398 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8399 goto out;
8400
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8401 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8402 continue;
8403
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8404 smp->ctx.a[0] = ctx->line + ctx->val;
8405 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8406 }
8407
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8408 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8409 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]8410 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8411 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8412 &smp->data.str.str,
8413 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8414 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8415 found = 1;
8416 if (occ >= 0) {
8417 /* one value was returned into smp->data.str.{str,len} */
8418 smp->flags |= SMP_F_NOT_LAST;
8419 return 1;
8420 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8421 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8422 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8423 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8424 /* all cookie headers and values were scanned. If we're looking for the
8425 * last occurrence, we may return it now.
8426 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8427 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8428 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8429 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8430}
8431
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8432/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8433 * 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]8434 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8435 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8436 */
8437static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8438acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8439 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8440{
8441 struct http_txn *txn = l7;
8442 struct hdr_idx *idx = &txn->hdr_idx;
8443 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8444 const struct http_msg *msg;
8445 const char *hdr_name;
8446 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8447 int cnt;
8448 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8449 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8450
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8451 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8452 return 0;
8453
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8454 CHECK_HTTP_MESSAGE_FIRST();
8455
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8456 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8457 msg = &txn->req;
8458 hdr_name = "Cookie";
8459 hdr_name_len = 6;
8460 } else {
8461 msg = &txn->rsp;
8462 hdr_name = "Set-Cookie";
8463 hdr_name_len = 10;
8464 }
8465
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8466 sol = msg->buf->buf.p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8467 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8468 ctx.idx = 0;
8469 cnt = 0;
8470
8471 while (1) {
8472 /* Note: val_beg == NULL every time we need to fetch a new header */
8473 if (!val_beg) {
8474 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8475 break;
8476
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8477 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8478 continue;
8479
8480 val_beg = ctx.line + ctx.val;
8481 val_end = val_beg + ctx.vlen;
8482 }
8483
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8484 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8485 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8486 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8487 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8488 &smp->data.str.str,
8489 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8490 cnt++;
8491 }
8492 }
8493
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8494 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8495 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8496 return 1;
8497}
8498
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8499/* Fetch an cookie's integer value. The integer value is returned. It
8500 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8501 */
8502static int
8503smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8504 const struct arg *args, struct sample *smp)
8505{
8506 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8507
8508 if (ret > 0) {
8509 smp->type = SMP_T_UINT;
8510 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8511 }
8512
8513 return ret;
8514}
8515
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8516/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8517/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8518/************************************************************************/
8519
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8520/*
8521 * Given a path string and its length, find the position of beginning of the
8522 * query string. Returns NULL if no query string is found in the path.
8523 *
8524 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8525 *
8526 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8527 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8528static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8529{
8530 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8531
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8532 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8533 return p ? p + 1 : NULL;
8534}
8535
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8536static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8537{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8538 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8539}
8540
8541/*
8542 * Given a url parameter, find the starting position of the first occurence,
8543 * or NULL if the parameter is not found.
8544 *
8545 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8546 * the function will return query_string+8.
8547 */
8548static char*
8549find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8550 char* url_param_name, size_t url_param_name_l,
8551 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8552{
8553 char *pos, *last;
8554
8555 pos = query_string;
8556 last = query_string + query_string_l - url_param_name_l - 1;
8557
8558 while (pos <= last) {
8559 if (pos[url_param_name_l] == '=') {
8560 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8561 return pos;
8562 pos += url_param_name_l + 1;
8563 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8564 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8565 pos++;
8566 pos++;
8567 }
8568 return NULL;
8569}
8570
8571/*
8572 * Given a url parameter name, returns its value and size into *value and
8573 * *value_l respectively, and returns non-zero. If the parameter is not found,
8574 * zero is returned and value/value_l are not touched.
8575 */
8576static int
8577find_url_param_value(char* path, size_t path_l,
8578 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8579 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8580{
8581 char *query_string, *qs_end;
8582 char *arg_start;
8583 char *value_start, *value_end;
8584
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8585 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8586 if (!query_string)
8587 return 0;
8588
8589 qs_end = path + path_l;
8590 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8591 url_param_name, url_param_name_l,
8592 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8593 if (!arg_start)
8594 return 0;
8595
8596 value_start = arg_start + url_param_name_l + 1;
8597 value_end = value_start;
8598
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8599 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8600 value_end++;
8601
8602 *value = value_start;
8603 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8604 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8605}
8606
8607static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8608smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8609 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8610{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8611 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8612 struct http_txn *txn = l7;
8613 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8614
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8615 if (!args || args[0].type != ARGT_STR ||
8616 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8617 return 0;
8618
8619 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8620
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8621 if (args[1].type)
8622 delim = *args[1].data.str.str;
8623
Willy Tarreau572bf902012-07-02 17:01:20 +0200[diff] [blame]8624 if (!find_url_param_value(msg->buf->buf.p + msg->sl.rq.u, msg->sl.rq.u_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8625 args->data.str.str, args->data.str.len,
8626 &smp->data.str.str, &smp->data.str.len,
8627 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8628 return 0;
8629
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8630 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8631 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8632 return 1;
8633}
8634
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8635/* Return the signed integer value for the specified url parameter (see url_param
8636 * above).
8637 */
8638static int
8639smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8640 const struct arg *args, struct sample *smp)
8641{
8642 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8643
8644 if (ret > 0) {
8645 smp->type = SMP_T_UINT;
8646 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8647 }
8648
8649 return ret;
8650}
8651
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8652/* This function is used to validate the arguments passed to any "hdr" fetch
8653 * keyword. These keywords support an optional positive or negative occurrence
8654 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8655 * is assumed that the types are already the correct ones. Returns 0 on error,
8656 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8657 * error message in case of error, that the caller is responsible for freeing.
8658 * The initial location must either be freeable or NULL.
8659 */
8660static int val_hdr(struct arg *arg, char **err_msg)
8661{
8662 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8663 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8664 return 0;
8665 }
8666 return 1;
8667}
8668
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8669/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8670/* All supported ACL keywords must be declared here. */
8671/************************************************************************/
8672
8673/* Note: must not be declared <const> as its list will be overwritten.
8674 * Please take care of keeping this list alphabetically sorted.
8675 */
8676static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8677 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8678 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8679 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8680 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8681 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8682 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8683 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8684 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8685
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8686 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8687 { "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]8688 { "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]8689 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8690 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8691 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8692 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8693 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8694 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8695 { "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]8696
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8697 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8698 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8699 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8700 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8701 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8702 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8703 { "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 },
8704 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8705 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8706 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8707 { "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]8708
8709 { "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]8710 { "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]8711 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8712
8713 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8714
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8715 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8716 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8717 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8718 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8719 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8720 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8721 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8722 { "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]8723
8724 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8725 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8726 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8727
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8728 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8729 { "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]8730 { "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]8731 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8732 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8733 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8734 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8735 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8736 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8737 { "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]8738
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8739 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8740 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8741 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8742 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8743 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8744 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8745 { "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 },
8746 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8747 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8748 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8749 { "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]8750
8751 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
8752
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8753 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8754 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8755 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8756 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8757 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8758 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8759 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8760 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
8761 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8762 { "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]8763
8764 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8765 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8766 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8767 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8768 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8769 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8770 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8771 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8772 { "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]8773 { "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]8774
8775 { NULL, NULL, NULL, NULL },
8776}};
8777
8778/************************************************************************/
8779/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8780/************************************************************************/
8781/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8782static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8783 { "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]8784 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_REQ },
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8785 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_REQ },
8786 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_REQ },
8787 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_REQ },
8788 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_REQ },
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8789 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_REQ },
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8790 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_REQ|SMP_CAP_RES },
8791 { "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]8792 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8793}};
8794
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8795
8796__attribute__((constructor))
8797static void __http_protocol_init(void)
8798{
8799 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8800 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8801}
8802
8803
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8804/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8805 * Local variables:
8806 * c-indent-level: 8
8807 * c-basic-offset: 8
8808 * End:
8809 */