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git01.mediatek.com / haproxy / 8b52bb387809aab73d518940a717189ddc0b6feb / . / src / proto_http.c
blob: 8588b50e5f4550a1da3b9471dc2da0369fa64d0a [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]95/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
96const char *HTTP_401_fmt =
97 "HTTP/1.0 401 Unauthorized\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]100 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
102 "\r\n"
103 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
104
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]105const char *HTTP_407_fmt =
106 "HTTP/1.0 407 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
109 "Content-Type: text/html\r\n"
110 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]116 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117 [HTTP_ERR_400] = 400,
118 [HTTP_ERR_403] = 403,
119 [HTTP_ERR_408] = 408,
120 [HTTP_ERR_500] = 500,
121 [HTTP_ERR_502] = 502,
122 [HTTP_ERR_503] = 503,
123 [HTTP_ERR_504] = 504,
124};
125
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]126static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]127 [HTTP_ERR_200] =
128 "HTTP/1.0 200 OK\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "\r\n"
133 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]136 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 "Cache-Control: no-cache\r\n"
138 "Connection: close\r\n"
139 "Content-Type: text/html\r\n"
140 "\r\n"
141 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
142
143 [HTTP_ERR_403] =
144 "HTTP/1.0 403 Forbidden\r\n"
145 "Cache-Control: no-cache\r\n"
146 "Connection: close\r\n"
147 "Content-Type: text/html\r\n"
148 "\r\n"
149 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
150
151 [HTTP_ERR_408] =
152 "HTTP/1.0 408 Request Time-out\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
158
159 [HTTP_ERR_500] =
160 "HTTP/1.0 500 Server Error\r\n"
161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
166
167 [HTTP_ERR_502] =
168 "HTTP/1.0 502 Bad Gateway\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
174
175 [HTTP_ERR_503] =
176 "HTTP/1.0 503 Service Unavailable\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
182
183 [HTTP_ERR_504] =
184 "HTTP/1.0 504 Gateway Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
190
191};
192
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]193/* status codes available for the stats admin page (strictly 4 chars length) */
194const char *stat_status_codes[STAT_STATUS_SIZE] = {
195 [STAT_STATUS_DENY] = "DENY",
196 [STAT_STATUS_DONE] = "DONE",
197 [STAT_STATUS_ERRP] = "ERRP",
198 [STAT_STATUS_EXCD] = "EXCD",
199 [STAT_STATUS_NONE] = "NONE",
200 [STAT_STATUS_PART] = "PART",
201 [STAT_STATUS_UNKN] = "UNKN",
202};
203
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205/* We must put the messages here since GCC cannot initialize consts depending
206 * on strlen().
207 */
208struct chunk http_err_chunks[HTTP_ERR_SIZE];
209
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210#define FD_SETS_ARE_BITFIELDS
211#ifdef FD_SETS_ARE_BITFIELDS
212/*
213 * This map is used with all the FD_* macros to check whether a particular bit
214 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
215 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
216 * byte should be encoded. Be careful to always pass bytes from 0 to 255
217 * exclusively to the macros.
218 */
219fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
221
222#else
223#error "Check if your OS uses bitfields for fd_sets"
224#endif
225
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]226void init_proto_http()
227{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]228 int i;
229 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]231
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]232 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
233 if (!http_err_msgs[msg]) {
234 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
235 abort();
236 }
237
238 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
239 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
240 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]241
242 /* initialize the log header encoding map : '{|}"#' should be encoded with
243 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
244 * URL encoding only requires '"', '#' to be encoded as well as non-
245 * printable characters above.
246 */
247 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
248 memset(url_encode_map, 0, sizeof(url_encode_map));
249 for (i = 0; i < 32; i++) {
250 FD_SET(i, hdr_encode_map);
251 FD_SET(i, url_encode_map);
252 }
253 for (i = 127; i < 256; i++) {
254 FD_SET(i, hdr_encode_map);
255 FD_SET(i, url_encode_map);
256 }
257
258 tmp = "\"#{|}";
259 while (*tmp) {
260 FD_SET(*tmp, hdr_encode_map);
261 tmp++;
262 }
263
264 tmp = "\"#";
265 while (*tmp) {
266 FD_SET(*tmp, url_encode_map);
267 tmp++;
268 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]269
270 /* memory allocations */
271 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]272 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]273 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]274}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]275
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]276/*
277 * We have 26 list of methods (1 per first letter), each of which can have
278 * up to 3 entries (2 valid, 1 null).
279 */
280struct http_method_desc {
281 http_meth_t meth;
282 int len;
283 const char text[8];
284};
285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]286const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]287 ['C' - 'A'] = {
288 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
289 },
290 ['D' - 'A'] = {
291 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
292 },
293 ['G' - 'A'] = {
294 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
295 },
296 ['H' - 'A'] = {
297 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
298 },
299 ['P' - 'A'] = {
300 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
301 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
302 },
303 ['T' - 'A'] = {
304 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
305 },
306 /* rest is empty like this :
307 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
308 */
309};
310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]311/* 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]312 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]313 * RFC2616 for those chars.
314 */
315
316const char http_is_spht[256] = {
317 [' '] = 1, ['\t'] = 1,
318};
319
320const char http_is_crlf[256] = {
321 ['\r'] = 1, ['\n'] = 1,
322};
323
324const char http_is_lws[256] = {
325 [' '] = 1, ['\t'] = 1,
326 ['\r'] = 1, ['\n'] = 1,
327};
328
329const char http_is_sep[256] = {
330 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
331 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
332 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
333 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
334 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
335};
336
337const char http_is_ctl[256] = {
338 [0 ... 31] = 1,
339 [127] = 1,
340};
341
342/*
343 * A token is any ASCII char that is neither a separator nor a CTL char.
344 * Do not overwrite values in assignment since gcc-2.95 will not handle
345 * them correctly. Instead, define every non-CTL char's status.
346 */
347const char http_is_token[256] = {
348 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
349 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
350 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
351 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
352 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
353 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
354 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
355 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
356 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
357 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
358 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
359 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
360 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
361 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
362 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
363 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
364 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
365 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
366 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
367 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
368 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
369 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
370 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
371 ['|'] = 1, ['}'] = 0, ['~'] = 1,
372};
373
374
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]375/*
376 * An http ver_token is any ASCII which can be found in an HTTP version,
377 * which includes 'H', 'T', 'P', '/', '.' and any digit.
378 */
379const char http_is_ver_token[256] = {
380 ['.'] = 1, ['/'] = 1,
381 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
382 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
383 ['H'] = 1, ['P'] = 1, ['T'] = 1,
384};
385
386
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]387/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]388 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
389 */
390#if defined(DEBUG_FSM)
391static void http_silent_debug(int line, struct session *s)
392{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]393 chunk_printf(&trash,
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",
395 line,
396 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
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);
398 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]399
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]400 chunk_printf(&trash,
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",
402 line,
403 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
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);
405 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]406}
407#else
408#define http_silent_debug(l,s) do { } while (0)
409#endif
410
411/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]412 * Adds a header and its CRLF at the tail of the message's buffer, just before
413 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]414 * The header is also automatically added to the index <hdr_idx>, and the end
415 * of headers is automatically adjusted. The number of bytes added is returned
416 * on success, otherwise <0 is returned indicating an error.
417 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]418int 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]419{
420 int bytes, len;
421
422 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]423 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]424 if (!bytes)
425 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]426 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]427 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
428}
429
430/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]431 * Adds a header and its CRLF at the tail of the message's buffer, just before
432 * 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]433 * the buffer is only opened and the space reserved, but nothing is copied.
434 * The header is also automatically added to the index <hdr_idx>, and the end
435 * of headers is automatically adjusted. The number of bytes added is returned
436 * on success, otherwise <0 is returned indicating an error.
437 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]438int http_header_add_tail2(struct http_msg *msg,
439 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]440{
441 int bytes;
442
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]443 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]444 if (!bytes)
445 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]446 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]447 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
448}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]449
450/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]451 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
452 * If so, returns the position of the first non-space character relative to
453 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
454 * to return a pointer to the place after the first space. Returns 0 if the
455 * header name does not match. Checks are case-insensitive.
456 */
457int http_header_match2(const char *hdr, const char *end,
458 const char *name, int len)
459{
460 const char *val;
461
462 if (hdr + len >= end)
463 return 0;
464 if (hdr[len] != ':')
465 return 0;
466 if (strncasecmp(hdr, name, len) != 0)
467 return 0;
468 val = hdr + len + 1;
469 while (val < end && HTTP_IS_SPHT(*val))
470 val++;
471 if ((val >= end) && (len + 2 <= end - hdr))
472 return len + 2; /* we may replace starting from second space */
473 return val - hdr;
474}
475
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]476/* Find the end of the header value contained between <s> and <e>. See RFC2616,
477 * par 2.2 for more information. Note that it requires a valid header to return
478 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]479 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]480char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]481{
482 int quoted, qdpair;
483
484 quoted = qdpair = 0;
485 for (; s < e; s++) {
486 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]487 else if (quoted) {
488 if (*s == '\\') qdpair = 1;
489 else if (*s == '"') quoted = 0;
490 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]491 else if (*s == '"') quoted = 1;
492 else if (*s == ',') return s;
493 }
494 return s;
495}
496
497/* Find the first or next occurrence of header <name> in message buffer <sol>
498 * using headers index <idx>, and return it in the <ctx> structure. This
499 * structure holds everything necessary to use the header and find next
500 * occurrence. If its <idx> member is 0, the header is searched from the
501 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]502 * 1 when it finds a value, and 0 when there is no more. It is designed to work
503 * with headers defined as comma-separated lists. As a special case, if ctx->val
504 * is NULL when searching for a new values of a header, the current header is
505 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]506 */
507int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]508 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]509 struct hdr_ctx *ctx)
510{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]511 char *eol, *sov;
512 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]513
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]514 cur_idx = ctx->idx;
515 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]516 /* We have previously returned a value, let's search
517 * another one on the same line.
518 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]519 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]520 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]521 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]522 eol = sol + idx->v[cur_idx].len;
523
524 if (sov >= eol)
525 /* no more values in this header */
526 goto next_hdr;
527
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]528 /* values remaining for this header, skip the comma but save it
529 * for later use (eg: for header deletion).
530 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]531 sov++;
532 while (sov < eol && http_is_lws[(unsigned char)*sov])
533 sov++;
534
535 goto return_hdr;
536 }
537
538 /* first request for this header */
539 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]540 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]541 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]542 while (cur_idx) {
543 eol = sol + idx->v[cur_idx].len;
544
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]545 if (len == 0) {
546 /* No argument was passed, we want any header.
547 * To achieve this, we simply build a fake request. */
548 while (sol + len < eol && sol[len] != ':')
549 len++;
550 name = sol;
551 }
552
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]553 if ((len < eol - sol) &&
554 (sol[len] == ':') &&
555 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]556 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]557 sov = sol + len + 1;
558 while (sov < eol && http_is_lws[(unsigned char)*sov])
559 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]560
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]561 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]562 ctx->prev = old_idx;
563 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]564 ctx->idx = cur_idx;
565 ctx->val = sov - sol;
566
567 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]568 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]569 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]570 eol--;
571 ctx->tws++;
572 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]573 ctx->vlen = eol - sov;
574 return 1;
575 }
576 next_hdr:
577 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]578 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]579 cur_idx = idx->v[cur_idx].next;
580 }
581 return 0;
582}
583
584int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]585 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]586 struct hdr_ctx *ctx)
587{
588 return http_find_header2(name, strlen(name), sol, idx, ctx);
589}
590
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]591/* Remove one value of a header. This only works on a <ctx> returned by one of
592 * the http_find_header functions. The value is removed, as well as surrounding
593 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]594 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]595 * message <msg>. The new index is returned. If it is zero, it means there is
596 * no more header, so any processing may stop. The ctx is always left in a form
597 * that can be handled by http_find_header2() to find next occurrence.
598 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]599int 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]600{
601 int cur_idx = ctx->idx;
602 char *sol = ctx->line;
603 struct hdr_idx_elem *hdr;
604 int delta, skip_comma;
605
606 if (!cur_idx)
607 return 0;
608
609 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]610 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]611 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]612 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]613 http_msg_move_end(msg, delta);
614 idx->used--;
615 hdr->len = 0; /* unused entry */
616 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]617 if (idx->tail == ctx->idx)
618 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]619 ctx->idx = ctx->prev; /* walk back to the end of previous header */
620 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
621 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]622 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]623 return ctx->idx;
624 }
625
626 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]627 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
628 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]629 */
630
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]631 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]632 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]633 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]634 NULL, 0);
635 hdr->len += delta;
636 http_msg_move_end(msg, delta);
637 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]638 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]639 return ctx->idx;
640}
641
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]642/* This function handles a server error at the stream interface level. The
643 * stream interface is assumed to be already in a closed state. An optional
644 * message is copied into the input buffer, and an HTTP status code stored.
645 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]646 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]647 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]648static void http_server_error(struct session *t, struct stream_interface *si,
649 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]650{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]651 channel_auto_read(si->ob);
652 channel_abort(si->ob);
653 channel_auto_close(si->ob);
654 channel_erase(si->ob);
655 channel_auto_close(si->ib);
656 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]657 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]658 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]659 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]660 }
661 if (!(t->flags & SN_ERR_MASK))
662 t->flags |= err;
663 if (!(t->flags & SN_FINST_MASK))
664 t->flags |= finst;
665}
666
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]667/* This function returns the appropriate error location for the given session
668 * and message.
669 */
670
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]671struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]672{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]673 if (s->be->errmsg[msgnum].str)
674 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]675 else if (s->fe->errmsg[msgnum].str)
676 return &s->fe->errmsg[msgnum];
677 else
678 return &http_err_chunks[msgnum];
679}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]680
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]681/*
682 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
683 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
684 */
685static http_meth_t find_http_meth(const char *str, const int len)
686{
687 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]688 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]689
690 m = ((unsigned)*str - 'A');
691
692 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]693 for (h = http_methods[m]; h->len > 0; h++) {
694 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]695 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]696 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]698 };
699 return HTTP_METH_OTHER;
700 }
701 return HTTP_METH_NONE;
702
703}
704
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]705/* Parse the URI from the given transaction (which is assumed to be in request
706 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
707 * It is returned otherwise.
708 */
709static char *
710http_get_path(struct http_txn *txn)
711{
712 char *ptr, *end;
713
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]714 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]715 end = ptr + txn->req.sl.rq.u_l;
716
717 if (ptr >= end)
718 return NULL;
719
720 /* RFC2616, par. 5.1.2 :
721 * Request-URI = "*" | absuri | abspath | authority
722 */
723
724 if (*ptr == '*')
725 return NULL;
726
727 if (isalpha((unsigned char)*ptr)) {
728 /* this is a scheme as described by RFC3986, par. 3.1 */
729 ptr++;
730 while (ptr < end &&
731 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
732 ptr++;
733 /* skip '://' */
734 if (ptr == end || *ptr++ != ':')
735 return NULL;
736 if (ptr == end || *ptr++ != '/')
737 return NULL;
738 if (ptr == end || *ptr++ != '/')
739 return NULL;
740 }
741 /* skip [user[:passwd]@]host[:[port]] */
742
743 while (ptr < end && *ptr != '/')
744 ptr++;
745
746 if (ptr == end)
747 return NULL;
748
749 /* OK, we got the '/' ! */
750 return ptr;
751}
752
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]753/* Returns a 302 for a redirectable request. This may only be called just after
754 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
755 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]756 * NOTE: this function is designed to support being called once data are scheduled
757 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]758 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]759void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]760{
761 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]762 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]763 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]764 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]765
766 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]767 trash.len = strlen(HTTP_302);
768 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]769
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]770 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]771
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]772 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]773 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]774 return;
775
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]776 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]777 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]778 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
779 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]780 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]781
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]782 /* 3: add the request URI. Since it was already forwarded, we need
783 * to temporarily rewind the buffer.
784 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]785 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]786 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]787
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]788 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]789 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]790
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]791 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]792
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]793 if (!path)
794 return;
795
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]796 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]797 return;
798
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]799 memcpy(trash.str + trash.len, path, len);
800 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]801
802 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]803 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
804 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]805 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]806 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
807 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]808 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]809
810 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]811 si_shutr(si);
812 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]813 si->err_type = SI_ET_NONE;
814 si->err_loc = NULL;
815 si->state = SI_ST_CLO;
816
817 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]818 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]819
820 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]821 if (srv)
822 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]823}
824
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]825/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]826 * that the server side is closed. Note that err_type is actually a
827 * bitmask, where almost only aborts may be cumulated with other
828 * values. We consider that aborted operations are more important
829 * than timeouts or errors due to the fact that nobody else in the
830 * logs might explain incomplete retries. All others should avoid
831 * being cumulated. It should normally not be possible to have multiple
832 * aborts at once, but just in case, the first one in sequence is reported.
833 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]834void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]835{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]836 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]837
838 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]839 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]840 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]841 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]842 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]843 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]844 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]845 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]846 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]847 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]848 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]849 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]850 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]851 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]852 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]853 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]854 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]855 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]856 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]857 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]858 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]859}
860
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]861extern const char sess_term_cond[8];
862extern const char sess_fin_state[8];
863extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]864struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]865struct pool_head *pool2_capture;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]866struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]867
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]868/*
869 * Capture headers from message starting at <som> according to header list
870 * <cap_hdr>, and fill the <idx> structure appropriately.
871 */
872void capture_headers(char *som, struct hdr_idx *idx,
873 char **cap, struct cap_hdr *cap_hdr)
874{
875 char *eol, *sol, *col, *sov;
876 int cur_idx;
877 struct cap_hdr *h;
878 int len;
879
880 sol = som + hdr_idx_first_pos(idx);
881 cur_idx = hdr_idx_first_idx(idx);
882
883 while (cur_idx) {
884 eol = sol + idx->v[cur_idx].len;
885
886 col = sol;
887 while (col < eol && *col != ':')
888 col++;
889
890 sov = col + 1;
891 while (sov < eol && http_is_lws[(unsigned char)*sov])
892 sov++;
893
894 for (h = cap_hdr; h; h = h->next) {
895 if ((h->namelen == col - sol) &&
896 (strncasecmp(sol, h->name, h->namelen) == 0)) {
897 if (cap[h->index] == NULL)
898 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]899 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]900
901 if (cap[h->index] == NULL) {
902 Alert("HTTP capture : out of memory.\n");
903 continue;
904 }
905
906 len = eol - sov;
907 if (len > h->len)
908 len = h->len;
909
910 memcpy(cap[h->index], sov, len);
911 cap[h->index][len]=0;
912 }
913 }
914 sol = eol + idx->v[cur_idx].cr + 1;
915 cur_idx = idx->v[cur_idx].next;
916 }
917}
918
919
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]920/* either we find an LF at <ptr> or we jump to <bad>.
921 */
922#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
923
924/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
925 * otherwise to <http_msg_ood> with <state> set to <st>.
926 */
927#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
928 ptr++; \
929 if (likely(ptr < end)) \
930 goto good; \
931 else { \
932 state = (st); \
933 goto http_msg_ood; \
934 } \
935 } while (0)
936
937
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]938/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]939 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]940 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
941 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
942 * will give undefined results.
943 * Note that it is upon the caller's responsibility to ensure that ptr < end,
944 * and that msg->sol points to the beginning of the response.
945 * If a complete line is found (which implies that at least one CR or LF is
946 * found before <end>, the updated <ptr> is returned, otherwise NULL is
947 * returned indicating an incomplete line (which does not mean that parts have
948 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
949 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
950 * upon next call.
951 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]952 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]953 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
954 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]955 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]956 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]957const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]958 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]959 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]960{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]961 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]962
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]963 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]964 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]965 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]966 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]967 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
968
969 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]970 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
972 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]973 state = HTTP_MSG_ERROR;
974 break;
975
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]976 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]977 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]978 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]979 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]980 goto http_msg_rpcode;
981 }
982 if (likely(HTTP_IS_SPHT(*ptr)))
983 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
984 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]985 state = HTTP_MSG_ERROR;
986 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]987
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]988 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]989 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]990 if (likely(!HTTP_IS_LWS(*ptr)))
991 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
992
993 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]994 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]995 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
996 }
997
998 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]999 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1000 http_msg_rsp_reason:
1001 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1002 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1003 msg->sl.st.r_l = 0;
1004 goto http_msg_rpline_eol;
1005
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1006 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1007 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1008 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1009 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1010 goto http_msg_rpreason;
1011 }
1012 if (likely(HTTP_IS_SPHT(*ptr)))
1013 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1014 /* so it's a CR/LF, so there is no reason phrase */
1015 goto http_msg_rsp_reason;
1016
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1017 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1018 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1019 if (likely(!HTTP_IS_CRLF(*ptr)))
1020 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1021 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1022 http_msg_rpline_eol:
1023 /* We have seen the end of line. Note that we do not
1024 * necessarily have the \n yet, but at least we know that we
1025 * have EITHER \r OR \n, otherwise the response would not be
1026 * complete. We can then record the response length and return
1027 * to the caller which will be able to register it.
1028 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1029 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1030 return ptr;
1031
1032#ifdef DEBUG_FULL
1033 default:
1034 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1035 exit(1);
1036#endif
1037 }
1038
1039 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1040 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1041 if (ret_state)
1042 *ret_state = state;
1043 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1044 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1046}
1047
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1048/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1049 * This function parses a request line between <ptr> and <end>, starting with
1050 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1051 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1052 * will give undefined results.
1053 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1054 * and that msg->sol points to the beginning of the request.
1055 * If a complete line is found (which implies that at least one CR or LF is
1056 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1057 * returned indicating an incomplete line (which does not mean that parts have
1058 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1059 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1060 * upon next call.
1061 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1062 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1063 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1064 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1065 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1066 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1067const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1068 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1069 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1070{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1071 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1072
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1074 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1075 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1076 if (likely(HTTP_IS_TOKEN(*ptr)))
1077 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1078
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1079 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1080 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1081 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1082 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1083
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1084 if (likely(HTTP_IS_CRLF(*ptr))) {
1085 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1086 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1087 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1088 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1089 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1090 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1091 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 msg->sl.rq.v_l = 0;
1094 goto http_msg_rqline_eol;
1095 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1096 state = HTTP_MSG_ERROR;
1097 break;
1098
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1099 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1100 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1102 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1103 goto http_msg_rquri;
1104 }
1105 if (likely(HTTP_IS_SPHT(*ptr)))
1106 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1107 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1108 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1109
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1110 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1111 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1112 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1113 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1114
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1115 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1116 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1118 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1119
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1120 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1121 /* non-ASCII chars are forbidden unless option
1122 * accept-invalid-http-request is enabled in the frontend.
1123 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1124 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1125 if (msg->err_pos < -1)
1126 goto invalid_char;
1127 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1128 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1129 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1130 }
1131
1132 if (likely(HTTP_IS_CRLF(*ptr))) {
1133 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1134 goto http_msg_req09_uri_e;
1135 }
1136
1137 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1138 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1139 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1140 state = HTTP_MSG_ERROR;
1141 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1142
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1143 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1144 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1145 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1146 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1147 goto http_msg_rqver;
1148 }
1149 if (likely(HTTP_IS_SPHT(*ptr)))
1150 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1151 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1152 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1153
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1154 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1155 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1156 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1157 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1158
1159 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1160 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1161 http_msg_rqline_eol:
1162 /* We have seen the end of line. Note that we do not
1163 * necessarily have the \n yet, but at least we know that we
1164 * have EITHER \r OR \n, otherwise the request would not be
1165 * complete. We can then record the request length and return
1166 * to the caller which will be able to register it.
1167 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1168 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1169 return ptr;
1170 }
1171
1172 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1173 state = HTTP_MSG_ERROR;
1174 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1175
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1176#ifdef DEBUG_FULL
1177 default:
1178 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1179 exit(1);
1180#endif
1181 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1182
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1183 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1184 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1185 if (ret_state)
1186 *ret_state = state;
1187 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1188 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1190}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1191
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1192/*
1193 * Returns the data from Authorization header. Function may be called more
1194 * than once so data is stored in txn->auth_data. When no header is found
1195 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1196 * searching again for something we are unable to find anyway.
1197 */
1198
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1199char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1200
1201int
1202get_http_auth(struct session *s)
1203{
1204
1205 struct http_txn *txn = &s->txn;
1206 struct chunk auth_method;
1207 struct hdr_ctx ctx;
1208 char *h, *p;
1209 int len;
1210
1211#ifdef DEBUG_AUTH
1212 printf("Auth for session %p: %d\n", s, txn->auth.method);
1213#endif
1214
1215 if (txn->auth.method == HTTP_AUTH_WRONG)
1216 return 0;
1217
1218 if (txn->auth.method)
1219 return 1;
1220
1221 txn->auth.method = HTTP_AUTH_WRONG;
1222
1223 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1224
1225 if (txn->flags & TX_USE_PX_CONN) {
1226 h = "Proxy-Authorization";
1227 len = strlen(h);
1228 } else {
1229 h = "Authorization";
1230 len = strlen(h);
1231 }
1232
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1233 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]1234 return 0;
1235
1236 h = ctx.line + ctx.val;
1237
1238 p = memchr(h, ' ', ctx.vlen);
1239 if (!p || p == h)
1240 return 0;
1241
1242 chunk_initlen(&auth_method, h, 0, p-h);
1243 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1244
1245 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1246
1247 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1248 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1249
1250 if (len < 0)
1251 return 0;
1252
1253
1254 get_http_auth_buff[len] = '\0';
1255
1256 p = strchr(get_http_auth_buff, ':');
1257
1258 if (!p)
1259 return 0;
1260
1261 txn->auth.user = get_http_auth_buff;
1262 *p = '\0';
1263 txn->auth.pass = p+1;
1264
1265 txn->auth.method = HTTP_AUTH_BASIC;
1266 return 1;
1267 }
1268
1269 return 0;
1270}
1271
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1272
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1273/*
1274 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1275 * depending on the initial msg->msg_state. The caller is responsible for
1276 * ensuring that the message does not wrap. The function can be preempted
1277 * everywhere when data are missing and recalled at the exact same location
1278 * with no information loss. The message may even be realigned between two
1279 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1280 * 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]1281 * fields. Note that msg->sol will be initialized after completing the first
1282 * state, so that none of the msg pointers has to be initialized prior to the
1283 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1284 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1285void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1286{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1287 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1288 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1289 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1290
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1291 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1292 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1293 ptr = buf->p + msg->next;
1294 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1295
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1296 if (unlikely(ptr >= end))
1297 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1298
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1299 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1300 /*
1301 * First, states that are specific to the response only.
1302 * We check them first so that request and headers are
1303 * closer to each other (accessed more often).
1304 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1306 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1307 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1308 /* we have a start of message, but we have to check
1309 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1310 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1311 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1312 if (unlikely(ptr != buf->p)) {
1313 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1314 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1315 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1316 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1317 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1318 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1319 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1320 hdr_idx_init(idx);
1321 state = HTTP_MSG_RPVER;
1322 goto http_msg_rpver;
1323 }
1324
1325 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1326 goto http_msg_invalid;
1327
1328 if (unlikely(*ptr == '\n'))
1329 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1330 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1331 /* stop here */
1332
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1333 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1334 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 EXPECT_LF_HERE(ptr, http_msg_invalid);
1336 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1337 /* stop here */
1338
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1339 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1340 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1341 case HTTP_MSG_RPVER_SP:
1342 case HTTP_MSG_RPCODE:
1343 case HTTP_MSG_RPCODE_SP:
1344 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1345 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1346 state, ptr, end,
1347 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1348 if (unlikely(!ptr))
1349 return;
1350
1351 /* we have a full response and we know that we have either a CR
1352 * or an LF at <ptr>.
1353 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1354 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1355
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1356 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1357 if (likely(*ptr == '\r'))
1358 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1359 goto http_msg_rpline_end;
1360
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1361 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1362 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1363 /* msg->sol must point to the first of CR or LF. */
1364 EXPECT_LF_HERE(ptr, http_msg_invalid);
1365 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1366 /* stop here */
1367
1368 /*
1369 * Second, states that are specific to the request only
1370 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1371 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1372 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1373 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1374 /* we have a start of message, but we have to check
1375 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1376 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1377 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1378 if (likely(ptr != buf->p)) {
1379 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1380 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1381 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1382 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1383 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1384 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1385 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1386 state = HTTP_MSG_RQMETH;
1387 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1388 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1389
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1390 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1391 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1392
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 if (unlikely(*ptr == '\n'))
1394 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1395 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1396 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1397
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1398 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1399 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1400 EXPECT_LF_HERE(ptr, http_msg_invalid);
1401 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1402 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1403
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1405 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1406 case HTTP_MSG_RQMETH_SP:
1407 case HTTP_MSG_RQURI:
1408 case HTTP_MSG_RQURI_SP:
1409 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1410 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1411 state, ptr, end,
1412 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1413 if (unlikely(!ptr))
1414 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1416 /* we have a full request and we know that we have either a CR
1417 * or an LF at <ptr>.
1418 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1420
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1421 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 if (likely(*ptr == '\r'))
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1424 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1425
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1426 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1427 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1428 /* check for HTTP/0.9 request : no version information available.
1429 * msg->sol must point to the first of CR or LF.
1430 */
1431 if (unlikely(msg->sl.rq.v_l == 0))
1432 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1433
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 EXPECT_LF_HERE(ptr, http_msg_invalid);
1435 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1437
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1438 /*
1439 * Common states below
1440 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1441 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1442 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1443 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1444 if (likely(!HTTP_IS_CRLF(*ptr))) {
1445 goto http_msg_hdr_name;
1446 }
1447
1448 if (likely(*ptr == '\r'))
1449 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1450 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1451
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1452 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1453 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 /* assumes msg->sol points to the first char */
1455 if (likely(HTTP_IS_TOKEN(*ptr)))
1456 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1457
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1458 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1459 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]1460
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1461 if (likely(msg->err_pos < -1) || *ptr == '\n')
1462 goto http_msg_invalid;
1463
1464 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1465 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1466
1467 /* and we still accept this non-token character */
1468 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1469
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1470 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1471 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1472 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 if (likely(HTTP_IS_SPHT(*ptr)))
1474 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]1475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1477 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1478
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1479 if (likely(!HTTP_IS_CRLF(*ptr))) {
1480 goto http_msg_hdr_val;
1481 }
1482
1483 if (likely(*ptr == '\r'))
1484 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1485 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1488 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 EXPECT_LF_HERE(ptr, http_msg_invalid);
1490 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]1491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1493 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1494 if (likely(HTTP_IS_SPHT(*ptr))) {
1495 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1496 for (; buf->p + msg->sov < ptr; msg->sov++)
1497 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 goto http_msg_hdr_l1_sp;
1499 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1500 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1501 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 goto http_msg_complete_header;
1503
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1504 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1505 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1506 /* assumes msg->sol points to the first char, and msg->sov
1507 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 */
1509 if (likely(!HTTP_IS_CRLF(*ptr)))
1510 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1511
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1512 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 /* Note: we could also copy eol into ->eoh so that we have the
1514 * real header end in case it ends with lots of LWS, but is this
1515 * really needed ?
1516 */
1517 if (likely(*ptr == '\r'))
1518 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1519 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1520
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1522 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 EXPECT_LF_HERE(ptr, http_msg_invalid);
1524 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]1525
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1526 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1527 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1529 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1530 for (; buf->p + msg->eol < ptr; msg->eol++)
1531 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 goto http_msg_hdr_val;
1533 }
1534 http_msg_complete_header:
1535 /*
1536 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1537 * Assumes msg->sol points to the first char, msg->sov points
1538 * to the first character of the value and msg->eol to the
1539 * first CR or LF so we know how the line ends. We insert last
1540 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1542 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1543 idx, idx->tail) < 0))
1544 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1545
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1546 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 if (likely(!HTTP_IS_CRLF(*ptr))) {
1548 goto http_msg_hdr_name;
1549 }
1550
1551 if (likely(*ptr == '\r'))
1552 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1553 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1554
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1555 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1556 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1557 /* Assumes msg->sol points to the first of either CR or LF */
1558 EXPECT_LF_HERE(ptr, http_msg_invalid);
1559 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1560 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1561 msg->eoh = msg->sol;
1562 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1563 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1565
1566 case HTTP_MSG_ERROR:
1567 /* this may only happen if we call http_msg_analyser() twice with an error */
1568 break;
1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570#ifdef DEBUG_FULL
1571 default:
1572 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1573 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1574#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575 }
1576 http_msg_ood:
1577 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1578 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1579 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1580 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1581
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1582 http_msg_invalid:
1583 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1584 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1585 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 return;
1587}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1588
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1589/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1590 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1591 * nothing is done and 1 is returned.
1592 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1593static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1594{
1595 int delta;
1596 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1597 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1598
1599 if (msg->sl.rq.v_l != 0)
1600 return 1;
1601
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1602 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1603 delta = 0;
1604
1605 if (msg->sl.rq.u_l == 0) {
1606 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1607 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1608 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1609 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1610 }
1611 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1612 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1613 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1614 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1615 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1616 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1617 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1618 NULL, NULL);
1619 if (unlikely(!cur_end))
1620 return 0;
1621
1622 /* we have a full HTTP/1.0 request now and we know that
1623 * we have either a CR or an LF at <ptr>.
1624 */
1625 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1626 return 1;
1627}
1628
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1629/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1630 * and "keep-alive" values. If we already know that some headers may safely
1631 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1632 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1633 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1634 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1635 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1636 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1637 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1638 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1639 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1640void 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]1641{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1642 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1643 const char *hdr_val = "Connection";
1644 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1645
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1646 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1647 return;
1648
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1649 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1650 hdr_val = "Proxy-Connection";
1651 hdr_len = 16;
1652 }
1653
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1654 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1655 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1656 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1657 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1658 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1659 if (to_del & 2)
1660 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1661 else
1662 txn->flags |= TX_CON_KAL_SET;
1663 }
1664 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1665 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1666 if (to_del & 1)
1667 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1668 else
1669 txn->flags |= TX_CON_CLO_SET;
1670 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1671 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1672 txn->flags |= TX_HDR_CONN_UPG;
1673 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1674 }
1675
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1676 txn->flags |= TX_HDR_CONN_PRS;
1677 return;
1678}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1679
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1680/* Apply desired changes on the Connection: header. Values may be removed and/or
1681 * added depending on the <wanted> flags, which are exclusively composed of
1682 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1683 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1684 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1685void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1686{
1687 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1688 const char *hdr_val = "Connection";
1689 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1690
1691 ctx.idx = 0;
1692
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1693
1694 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1695 hdr_val = "Proxy-Connection";
1696 hdr_len = 16;
1697 }
1698
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1699 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1700 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1701 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1702 if (wanted & TX_CON_KAL_SET)
1703 txn->flags |= TX_CON_KAL_SET;
1704 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1705 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1706 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1707 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1708 if (wanted & TX_CON_CLO_SET)
1709 txn->flags |= TX_CON_CLO_SET;
1710 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1711 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1712 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1713 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1714
1715 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1716 return;
1717
1718 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1719 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1720 hdr_val = "Connection: close";
1721 hdr_len = 17;
1722 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1723 hdr_val = "Proxy-Connection: close";
1724 hdr_len = 23;
1725 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1726 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1727 }
1728
1729 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1730 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1731 hdr_val = "Connection: keep-alive";
1732 hdr_len = 22;
1733 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1734 hdr_val = "Proxy-Connection: keep-alive";
1735 hdr_len = 28;
1736 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1737 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 }
1739 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1740}
1741
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1742/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1743 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1744 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1745 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1746 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1747 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1748static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1749{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1750 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1751 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1752 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1753 const char *end = buf->data + buf->size;
1754 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1755 unsigned int chunk = 0;
1756
1757 /* The chunk size is in the following form, though we are only
1758 * interested in the size and CRLF :
1759 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1760 */
1761 while (1) {
1762 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1763 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1764 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1765 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1766 if (c < 0) /* not a hex digit anymore */
1767 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1768 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1769 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1770 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1771 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1772 chunk = (chunk << 4) + c;
1773 }
1774
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1775 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1776 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1777 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1778
1779 while (http_is_spht[(unsigned char)*ptr]) {
1780 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1781 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1782 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1784 }
1785
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1786 /* Up to there, we know that at least one byte is present at *ptr. Check
1787 * for the end of chunk size.
1788 */
1789 while (1) {
1790 if (likely(HTTP_IS_CRLF(*ptr))) {
1791 /* we now have a CR or an LF at ptr */
1792 if (likely(*ptr == '\r')) {
1793 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1794 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1795 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1796 return 0;
1797 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1798
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1799 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1800 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1801 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1802 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1803 /* done */
1804 break;
1805 }
1806 else if (*ptr == ';') {
1807 /* chunk extension, ends at next CRLF */
1808 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1809 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1810 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1811 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1812
1813 while (!HTTP_IS_CRLF(*ptr)) {
1814 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1815 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1816 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1817 return 0;
1818 }
1819 /* we have a CRLF now, loop above */
1820 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1821 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1822 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1823 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1824 }
1825
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1827 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1828 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1829 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1830 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1831 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1832 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1833 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1834 msg->chunk_len = chunk;
1835 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1836 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1837 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1838 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1839 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1840 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1841}
1842
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1843/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1844 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1845 * the trailers is found, it is automatically scheduled to be forwarded,
1846 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1847 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1848 * 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]1849 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1850 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1851 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1852 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1853 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1854 * matches the length of trailers already parsed and not forwarded. It is also
1855 * important to note that this function is designed to be able to parse wrapped
1856 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1857 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1858static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1859{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1860 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1861
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1862 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1863 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1864 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1865 const char *ptr = b_ptr(buf, msg->next);
1866 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1867 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1868
1869 /* scan current line and stop at LF or CRLF */
1870 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1871 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1872 return 0;
1873
1874 if (*ptr == '\n') {
1875 if (!p1)
1876 p1 = ptr;
1877 p2 = ptr;
1878 break;
1879 }
1880
1881 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1882 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1883 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1885 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1886 p1 = ptr;
1887 }
1888
1889 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1890 if (ptr >= buf->data + buf->size)
1891 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1892 }
1893
1894 /* after LF; point to beginning of next line */
1895 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1896 if (p2 >= buf->data + buf->size)
1897 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1898
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1899 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1900 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1901 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1902
1903 /* schedule this line for forwarding */
1904 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1905 if (msg->sov >= buf->size)
1906 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1907
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1908 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1909 /* LF/CRLF at beginning of line => end of trailers at p2.
1910 * Everything was scheduled for forwarding, there's nothing
1911 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1912 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1913 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1914 msg->msg_state = HTTP_MSG_DONE;
1915 return 1;
1916 }
1917 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1918 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1919 }
1920}
1921
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1922/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1923 * 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]1924 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1925 * 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]1926 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1927 * not enough data are available, the function does not change anything and
1928 * returns zero. If a parse error is encountered, the function returns < 0 and
1929 * does not change anything. Note: this function is designed to parse wrapped
1930 * CRLF at the end of the buffer.
1931 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1932static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1933{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1934 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1935 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1936 int bytes;
1937
1938 /* NB: we'll check data availabilty at the end. It's not a
1939 * problem because whatever we match first will be checked
1940 * against the correct length.
1941 */
1942 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1943 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1944 if (*ptr == '\r') {
1945 bytes++;
1946 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1947 if (ptr >= buf->data + buf->size)
1948 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1949 }
1950
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1951 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1952 return 0;
1953
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1954 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1955 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1956 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1957 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1958
1959 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1960 if (ptr >= buf->data + buf->size)
1961 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1962 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1963 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1964 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1965 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1966 return 1;
1967}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1968
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1969
1970/*
1971 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1972 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1973int select_compression_request_header(struct session *s, struct buffer *req)
1974{
1975 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1976 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1977 struct hdr_ctx ctx;
1978 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1979 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1980
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1981 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1982 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1983 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1984 */
1985 ctx.idx = 0;
1986 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1987 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1988 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
1989 (ctx.vlen < 31 ||
1990 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
1991 ctx.line[ctx.val + 30] < '6' ||
1992 (ctx.line[ctx.val + 30] == '6' &&
1993 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
1994 s->comp_algo = NULL;
1995 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1996 }
1997
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1998 ctx.idx = 0;
1999 /* no compression when Cache-Control: no-transform found */
2000 while (http_find_header2("Cache-Control", 13, req->p, &txn->hdr_idx, &ctx)) {
2001 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12)) {
2002 s->comp_algo = NULL;
2003 return 0;
2004 }
2005 }
2006
2007 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2008 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2009 ctx.idx = 0;
2010 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2011 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2012 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2013 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2014
2015 /* remove all occurrences of the header when "compression offload" is set */
2016
2017 if ((s->be->comp && s->be->comp->offload) ||
2018 (s->fe->comp && s->fe->comp->offload)) {
2019 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2020 ctx.idx = 0;
2021 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2022 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2023 }
2024 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2025 return 1;
2026 }
2027 }
2028 }
2029 }
2030
2031 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2032 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2033 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2034 if (comp_algo->add_data == identity_add_data) {
2035 s->comp_algo = comp_algo;
2036 return 1;
2037 }
2038 }
2039 }
2040
2041 s->comp_algo = NULL;
2042
2043 return 0;
2044}
2045
2046/*
2047 * Selects a comression algorithm depending of the server response.
2048 */
2049int select_compression_response_header(struct session *s, struct buffer *res)
2050{
2051 struct http_txn *txn = &s->txn;
2052 struct http_msg *msg = &txn->rsp;
2053 struct hdr_ctx ctx;
2054 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2055
2056 /* no common compression algorithm was found in request header */
2057 if (s->comp_algo == NULL)
2058 goto fail;
2059
2060 /* HTTP < 1.1 should not be compressed */
2061 if (!(msg->flags & HTTP_MSGF_VER_11))
2062 goto fail;
2063
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2064 ctx.idx = 0;
2065
2066 /* Content-Length is null */
2067 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2068 goto fail;
2069
2070 /* content is already compressed */
2071 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2072 goto fail;
2073
2074 comp_type = NULL;
2075
2076 /* if there was a compression content-type option in the backend or the frontend
2077 * The backend have priority.
2078 */
2079 if ((s->be->comp && (comp_type = s->be->comp->types)) || (s->fe->comp && (comp_type = s->fe->comp->types))) {
2080 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2081 for (; comp_type; comp_type = comp_type->next) {
2082 if (strncmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
2083 /* this Content-Type should be compressed */
2084 break;
2085 }
William Lallemandc04ca582012-11-12 13:56:25 +0100[diff] [blame]2086 } else {
2087 /* there is no Content-Type header */
2088 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2089 }
2090 /* this Content-Type should not be compressed */
2091 if (comp_type == NULL)
2092 goto fail;
2093 }
2094
2095 ctx.idx = 0;
2096
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2097 /* limit compression rate */
2098 if (global.comp_rate_lim > 0)
2099 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2100 goto fail;
2101
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2102 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2103 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2104 goto fail;
2105
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2106 s->flags |= SN_COMP_READY;
2107
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2108 /* remove Content-Length header */
2109 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2110 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2111
2112 /* add Transfer-Encoding header */
2113 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2114 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2115
2116 /*
2117 * Add Content-Encoding header when it's not identity encoding.
2118 * RFC 2616 : Identity encoding: This content-coding is used only in the
2119 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2120 * header.
2121 */
2122 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2123 trash.len = 18;
2124 memcpy(trash.str, "Content-Encoding: ", trash.len);
2125 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2126 trash.len += s->comp_algo->name_len;
2127 trash.str[trash.len] = '\0';
2128 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2129 }
2130
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2131 return 1;
2132
2133fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2134 if (s->flags & SN_COMP_READY)
William Lallemand1c2d6222012-10-30 15:52:53 +0100[diff] [blame]2135 s->comp_algo->end(&s->comp_ctx);
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2136 s->comp_algo = NULL;
2137 s->flags &= ~SN_COMP_READY;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2138 return 0;
2139}
2140
2141
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2142/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2143 * processing can continue on next analysers, or zero if it either needs more
2144 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2145 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2146 * when it has nothing left to do, and may remove any analyser when it wants to
2147 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2148 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2149int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2150{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2151 /*
2152 * We will parse the partial (or complete) lines.
2153 * We will check the request syntax, and also join multi-line
2154 * headers. An index of all the lines will be elaborated while
2155 * parsing.
2156 *
2157 * For the parsing, we use a 28 states FSM.
2158 *
2159 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2160 * req->buf->p = beginning of request
2161 * req->buf->p + msg->eoh = end of processed headers / start of current one
2162 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2163 * msg->eol = end of current header or line (LF or CRLF)
2164 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2165 *
2166 * At end of parsing, we may perform a capture of the error (if any), and
2167 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2168 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2169 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2170 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2171
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2172 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2173 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2174 struct http_txn *txn = &s->txn;
2175 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2176 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2177
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2178 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]2179 now_ms, __FUNCTION__,
2180 s,
2181 req,
2182 req->rex, req->wex,
2183 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2184 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2185 req->analysers);
2186
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2187 /* we're speaking HTTP here, so let's speak HTTP to the client */
2188 s->srv_error = http_return_srv_error;
2189
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2190 /* There's a protected area at the end of the buffer for rewriting
2191 * purposes. We don't want to start to parse the request if the
2192 * protected area is affected, because we may have to move processed
2193 * data later, which is much more complicated.
2194 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2195 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2196 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2197 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2198 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2199 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2200 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2201 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2202 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2203 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2204 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2205 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2206 return 0;
2207 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2208 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2209 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2210 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2211 }
2212
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2213 /* Note that we have the same problem with the response ; we
2214 * may want to send a redirect, error or anything which requires
2215 * some spare space. So we'll ensure that we have at least
2216 * maxrewrite bytes available in the response buffer before
2217 * processing that one. This will only affect pipelined
2218 * keep-alive requests.
2219 */
2220 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2221 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2222 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2223 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2224 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2225 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]2226 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2227 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2228 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2229 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2230 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2231 return 0;
2232 }
2233 }
2234
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2235 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2236 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2237 }
2238
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2239 /* 1: we might have to print this header in debug mode */
2240 if (unlikely((global.mode & MODE_DEBUG) &&
2241 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2242 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2243 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2244
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2245 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2246 /* this is a bit complex : in case of error on the request line,
2247 * we know that rq.l is still zero, so we display only the part
2248 * up to the end of the line (truncated by debug_hdr).
2249 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2250 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2251 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2252
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2253 sol += hdr_idx_first_pos(&txn->hdr_idx);
2254 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2255
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2256 while (cur_idx) {
2257 eol = sol + txn->hdr_idx.v[cur_idx].len;
2258 debug_hdr("clihdr", s, sol, eol);
2259 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2260 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2261 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2262 }
2263
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2264
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 /*
2266 * Now we quickly check if we have found a full valid request.
2267 * If not so, we check the FD and buffer states before leaving.
2268 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2269 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2270 * requests are checked first. When waiting for a second request
2271 * on a keep-alive session, if we encounter and error, close, t/o,
2272 * we note the error in the session flags but don't set any state.
2273 * Since the error will be noted there, it will not be counted by
2274 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2275 * Last, we may increase some tracked counters' http request errors on
2276 * the cases that are deliberately the client's fault. For instance,
2277 * a timeout or connection reset is not counted as an error. However
2278 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2279 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2280
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2281 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2282 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2283 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2284 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2285 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2286 session_inc_http_req_ctr(s);
2287 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2288 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2289 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2290 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2291
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2292 /* 1: Since we are in header mode, if there's no space
2293 * left for headers, we won't be able to free more
2294 * later, so the session will never terminate. We
2295 * must terminate it now.
2296 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2297 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2298 /* FIXME: check if URI is set and return Status
2299 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2300 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2301 session_inc_http_req_ctr(s);
2302 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2303 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2304 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2305 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2306 goto return_bad_req;
2307 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2308
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2309 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2310 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2311 if (!(s->flags & SN_ERR_MASK))
2312 s->flags |= SN_ERR_CLICL;
2313
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2314 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2315 goto failed_keep_alive;
2316
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2317 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2318 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2319 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]2320 session_inc_http_err_ctr(s);
2321 }
2322
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2323 msg->msg_state = HTTP_MSG_ERROR;
2324 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2325
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2326 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2327 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2328 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2329 if (s->listener->counters)
2330 s->listener->counters->failed_req++;
2331
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2332 if (!(s->flags & SN_FINST_MASK))
2333 s->flags |= SN_FINST_R;
2334 return 0;
2335 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2336
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2337 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2338 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]2339 if (!(s->flags & SN_ERR_MASK))
2340 s->flags |= SN_ERR_CLITO;
2341
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2342 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2343 goto failed_keep_alive;
2344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2345 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2346 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2347 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]2348 session_inc_http_err_ctr(s);
2349 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2350 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2351 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2352 msg->msg_state = HTTP_MSG_ERROR;
2353 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2354
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2355 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2356 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2357 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2358 if (s->listener->counters)
2359 s->listener->counters->failed_req++;
2360
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2361 if (!(s->flags & SN_FINST_MASK))
2362 s->flags |= SN_FINST_R;
2363 return 0;
2364 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2365
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2366 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2367 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2368 if (!(s->flags & SN_ERR_MASK))
2369 s->flags |= SN_ERR_CLICL;
2370
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2371 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2372 goto failed_keep_alive;
2373
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2374 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2375 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]2376 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2377 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2378 msg->msg_state = HTTP_MSG_ERROR;
2379 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2380
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2381 session_inc_http_err_ctr(s);
2382 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2383 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2384 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2385 if (s->listener->counters)
2386 s->listener->counters->failed_req++;
2387
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2388 if (!(s->flags & SN_FINST_MASK))
2389 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2390 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2391 }
2392
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2393 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2394 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2395 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2396#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2397 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2398 /* We need more data, we have to re-enable quick-ack in case we
2399 * previously disabled it, otherwise we might cause the client
2400 * to delay next data.
2401 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2402 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2403 }
2404#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2405
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2406 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2407 /* If the client starts to talk, let's fall back to
2408 * request timeout processing.
2409 */
2410 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2411 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2412 }
2413
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2414 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2415 if (!tick_isset(req->analyse_exp)) {
2416 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2417 (txn->flags & TX_WAIT_NEXT_RQ) &&
2418 tick_isset(s->be->timeout.httpka))
2419 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2420 else
2421 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2422 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2423
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2424 /* we're not ready yet */
2425 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2426
2427 failed_keep_alive:
2428 /* Here we process low-level errors for keep-alive requests. In
2429 * short, if the request is not the first one and it experiences
2430 * a timeout, read error or shutdown, we just silently close so
2431 * that the client can try again.
2432 */
2433 txn->status = 0;
2434 msg->msg_state = HTTP_MSG_RQBEFORE;
2435 req->analysers = 0;
2436 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2437 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2438 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2439 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2440 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2441
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2442 /* OK now we have a complete HTTP request with indexed headers. Let's
2443 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2444 * 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]2445 * 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]2446 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2447 * byte after the last LF. msg->sov points to the first byte of data.
2448 * msg->eol cannot be trusted because it may have been left uninitialized
2449 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2450 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2451
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2452 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2453 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2454
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2455 if (txn->flags & TX_WAIT_NEXT_RQ) {
2456 /* kill the pending keep-alive timeout */
2457 txn->flags &= ~TX_WAIT_NEXT_RQ;
2458 req->analyse_exp = TICK_ETERNITY;
2459 }
2460
2461
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2462 /* Maybe we found in invalid header name while we were configured not
2463 * to block on that, so we have to capture it now.
2464 */
2465 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2466 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]2467
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2468 /*
2469 * 1: identify the method
2470 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2471 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2472
2473 /* we can make use of server redirect on GET and HEAD */
2474 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2475 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2476
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2477 /*
2478 * 2: check if the URI matches the monitor_uri.
2479 * We have to do this for every request which gets in, because
2480 * the monitor-uri is defined by the frontend.
2481 */
2482 if (unlikely((s->fe->monitor_uri_len != 0) &&
2483 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2484 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2485 s->fe->monitor_uri,
2486 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2487 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2488 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2489 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2490 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2491
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2492 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2493 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2494
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2495 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2496 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2497 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]2498
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2499 ret = acl_pass(ret);
2500 if (cond->pol == ACL_COND_UNLESS)
2501 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2502
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2503 if (ret) {
2504 /* we fail this request, let's return 503 service unavail */
2505 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2506 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2507 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2508 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2509 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2510
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2511 /* nothing to fail, let's reply normaly */
2512 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2513 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2514 goto return_prx_cond;
2515 }
2516
2517 /*
2518 * 3: Maybe we have to copy the original REQURI for the logs ?
2519 * Note: we cannot log anymore if the request has been
2520 * classified as invalid.
2521 */
2522 if (unlikely(s->logs.logwait & LW_REQ)) {
2523 /* we have a complete HTTP request that we must log */
2524 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2525 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2526
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2527 if (urilen >= REQURI_LEN)
2528 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2529 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2530 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2531
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2532 if (!(s->logs.logwait &= ~LW_REQ))
2533 s->do_log(s);
2534 } else {
2535 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2536 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2537 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2538
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2539 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2540 s->unique_id = pool_alloc2(pool2_uniqueid);
2541 }
2542
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2543 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2544 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2545 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2546
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2547 /* ... and check if the request is HTTP/1.1 or above */
2548 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2549 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2550 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2551 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2552 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2553
2554 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2555 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2556
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2557 /* if the frontend has "option http-use-proxy-header", we'll check if
2558 * we have what looks like a proxied connection instead of a connection,
2559 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2560 * Note that this is *not* RFC-compliant, however browsers and proxies
2561 * happen to do that despite being non-standard :-(
2562 * We consider that a request not beginning with either '/' or '*' is
2563 * a proxied connection, which covers both "scheme://location" and
2564 * CONNECT ip:port.
2565 */
2566 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2567 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2568 txn->flags |= TX_USE_PX_CONN;
2569
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2570 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2571 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2572
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2573 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2574 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2575 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2576 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2577
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2578 /* 6: determine the transfer-length.
2579 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2580 * the presence of a message-body in a REQUEST and its transfer length
2581 * must be determined that way (in order of precedence) :
2582 * 1. The presence of a message-body in a request is signaled by the
2583 * inclusion of a Content-Length or Transfer-Encoding header field
2584 * in the request's header fields. When a request message contains
2585 * both a message-body of non-zero length and a method that does
2586 * not define any semantics for that request message-body, then an
2587 * origin server SHOULD either ignore the message-body or respond
2588 * with an appropriate error message (e.g., 413). A proxy or
2589 * gateway, when presented the same request, SHOULD either forward
2590 * the request inbound with the message- body or ignore the
2591 * message-body when determining a response.
2592 *
2593 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2594 * and the "chunked" transfer-coding (Section 6.2) is used, the
2595 * transfer-length is defined by the use of this transfer-coding.
2596 * If a Transfer-Encoding header field is present and the "chunked"
2597 * transfer-coding is not present, the transfer-length is defined
2598 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2599 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2600 * 3. If a Content-Length header field is present, its decimal value in
2601 * OCTETs represents both the entity-length and the transfer-length.
2602 * If a message is received with both a Transfer-Encoding header
2603 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2604 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2605 * 4. By the server closing the connection. (Closing the connection
2606 * cannot be used to indicate the end of a request body, since that
2607 * would leave no possibility for the server to send back a response.)
2608 *
2609 * Whenever a transfer-coding is applied to a message-body, the set of
2610 * transfer-codings MUST include "chunked", unless the message indicates
2611 * it is terminated by closing the connection. When the "chunked"
2612 * transfer-coding is used, it MUST be the last transfer-coding applied
2613 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2614 */
2615
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2616 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2617 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2618 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2619 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2620 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2621 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2622 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2623 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2624 /* bad transfer-encoding (chunked followed by something else) */
2625 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2626 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2627 break;
2628 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2629 }
2630
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2631 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2632 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2633 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2634 signed long long cl;
2635
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2636 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2637 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2638 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2639 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2640
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2641 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2642 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2643 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2644 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2645
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2646 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2647 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2648 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2649 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2650
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2651 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2652 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2653 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2654 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2655
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2656 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2657 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2658 }
2659
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2660 /* bodyless requests have a known length */
2661 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2662 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2663
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2664 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2665 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2666 req->analyse_exp = TICK_ETERNITY;
2667 return 1;
2668
2669 return_bad_req:
2670 /* We centralize bad requests processing here */
2671 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2672 /* we detected a parsing error. We want to archive this request
2673 * in the dedicated proxy area for later troubleshooting.
2674 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2675 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]2676 }
2677
2678 txn->req.msg_state = HTTP_MSG_ERROR;
2679 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2680 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2681
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2682 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2683 if (s->listener->counters)
2684 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2685
2686 return_prx_cond:
2687 if (!(s->flags & SN_ERR_MASK))
2688 s->flags |= SN_ERR_PRXCOND;
2689 if (!(s->flags & SN_FINST_MASK))
2690 s->flags |= SN_FINST_R;
2691
2692 req->analysers = 0;
2693 req->analyse_exp = TICK_ETERNITY;
2694 return 0;
2695}
2696
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2697/* We reached the stats page through a POST request.
2698 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2699 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2700 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2701int 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]2702{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2703 struct proxy *px = NULL;
2704 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2705
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2706 char key[LINESIZE];
2707 int action = ST_ADM_ACTION_NONE;
2708 int reprocess = 0;
2709
2710 int total_servers = 0;
2711 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2712
2713 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2714 char *st_cur_param = NULL;
2715 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2716
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2717 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2718 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2719
2720 cur_param = next_param = end_params;
2721
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2722 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2723 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2724 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2725 return 1;
2726 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2727 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2728 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2729 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2730 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2731 }
2732
2733 *end_params = '\0';
2734
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2735 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2736
2737 /*
2738 * Parse the parameters in reverse order to only store the last value.
2739 * From the html form, the backend and the action are at the end.
2740 */
2741 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2742 char *value;
2743 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2744
2745 cur_param--;
2746 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2747 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2748 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2749 poffset = (cur_param != first_param ? 1 : 0);
2750 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2751 if ((plen > 0) && (plen <= sizeof(key))) {
2752 strncpy(key, cur_param + poffset, plen);
2753 key[plen - 1] = '\0';
2754 } else {
2755 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2756 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2757 }
2758
2759 /* Parse the value */
2760 value = key;
2761 while (*value != '\0' && *value != '=') {
2762 value++;
2763 }
2764 if (*value == '=') {
2765 /* Ok, a value is found, we can mark the end of the key */
2766 *value++ = '\0';
2767 }
2768
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2769 if (!url_decode(key) || !url_decode(value))
2770 break;
2771
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2772 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2773 if (!px && (strcmp(key, "b") == 0)) {
2774 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2775 /* the backend name is unknown or ambiguous (duplicate names) */
2776 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2777 goto out;
2778 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2779 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2780 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2781 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2782 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2783 }
2784 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2785 action = ST_ADM_ACTION_ENABLE;
2786 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2787 else if (strcmp(value, "stop") == 0) {
2788 action = ST_ADM_ACTION_STOP;
2789 }
2790 else if (strcmp(value, "start") == 0) {
2791 action = ST_ADM_ACTION_START;
2792 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2793 else if (strcmp(value, "shutdown") == 0) {
2794 action = ST_ADM_ACTION_SHUTDOWN;
2795 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2796 else {
2797 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2798 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2799 }
2800 }
2801 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2802 if (!(px && action)) {
2803 /*
2804 * Indicates that we'll need to reprocess the parameters
2805 * as soon as backend and action are known
2806 */
2807 if (!reprocess) {
2808 st_cur_param = cur_param;
2809 st_next_param = next_param;
2810 }
2811 reprocess = 1;
2812 }
2813 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2814 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2815 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2816 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2817 /* Not already in maintenance, we can change the server state */
2818 sv->state |= SRV_MAINTAIN;
2819 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2820 altered_servers++;
2821 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2822 }
2823 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2824 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2825 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2826 /* Already in maintenance, we can change the server state */
2827 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2828 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2829 altered_servers++;
2830 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2831 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2832 break;
2833 case ST_ADM_ACTION_STOP:
2834 case ST_ADM_ACTION_START:
2835 if (action == ST_ADM_ACTION_START)
2836 sv->uweight = sv->iweight;
2837 else
2838 sv->uweight = 0;
2839
2840 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2841 /* we must take care of not pushing the server to full throttle during slow starts */
2842 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2843 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2844 else
2845 sv->eweight = BE_WEIGHT_SCALE;
2846 sv->eweight *= sv->uweight;
2847 } else {
2848 sv->eweight = sv->uweight;
2849 }
2850
2851 /* static LB algorithms are a bit harder to update */
2852 if (px->lbprm.update_server_eweight)
2853 px->lbprm.update_server_eweight(sv);
2854 else if (sv->eweight) {
2855 if (px->lbprm.set_server_status_up)
2856 px->lbprm.set_server_status_up(sv);
2857 }
2858 else {
2859 if (px->lbprm.set_server_status_down)
2860 px->lbprm.set_server_status_down(sv);
2861 }
2862 altered_servers++;
2863 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2864 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2865 case ST_ADM_ACTION_SHUTDOWN:
2866 if (px->state != PR_STSTOPPED) {
2867 struct session *sess, *sess_bck;
2868
2869 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2870 if (sess->srv_conn == sv)
2871 session_shutdown(sess, SN_ERR_KILLED);
2872
2873 altered_servers++;
2874 total_servers++;
2875 }
2876 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2877 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2878 } else {
2879 /* the server name is unknown or ambiguous (duplicate names) */
2880 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2881 }
2882 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2883 if (reprocess && px && action) {
2884 /* Now, we know the backend and the action chosen by the user.
2885 * We can safely restart from the first server parameter
2886 * to reprocess them
2887 */
2888 cur_param = st_cur_param;
2889 next_param = st_next_param;
2890 reprocess = 0;
2891 goto reprocess_servers;
2892 }
2893
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2894 next_param = cur_param;
2895 }
2896 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2897
2898 if (total_servers == 0) {
2899 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2900 }
2901 else if (altered_servers == 0) {
2902 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2903 }
2904 else if (altered_servers == total_servers) {
2905 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2906 }
2907 else {
2908 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2909 }
2910 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2911 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2912}
2913
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2914/* returns a pointer to the first rule which forbids access (deny or http_auth),
2915 * or NULL if everything's OK.
2916 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2917static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2918http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2919{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2920 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2921
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2922 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2923 int ret = 1;
2924
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2925 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2926 continue;
2927
2928 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2929 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2930 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]2931 ret = acl_pass(ret);
2932
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2933 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2934 ret = !ret;
2935 }
2936
2937 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2938 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2939 return NULL; /* no problem */
2940 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2941 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2942 }
2943 }
2944 return NULL;
2945}
2946
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2947/* This stream analyser runs all HTTP request processing which is common to
2948 * frontends and backends, which means blocking ACLs, filters, connection-close,
2949 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2950 * 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]2951 * either needs more data or wants to immediately abort the request (eg: deny,
2952 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2953 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2954int 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]2955{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2956 struct http_txn *txn = &s->txn;
2957 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2958 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2959 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2960 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2961 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2962 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2963
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2964 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2965 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2966 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2967 return 0;
2968 }
2969
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2970 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2971 req->analyse_exp = TICK_ETERNITY;
2972
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2973 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]2974 now_ms, __FUNCTION__,
2975 s,
2976 req,
2977 req->rex, req->wex,
2978 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2979 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2980 req->analysers);
2981
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2982 /* first check whether we have some ACLs set to block this request */
2983 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2984 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]2985
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2986 ret = acl_pass(ret);
2987 if (cond->pol == ACL_COND_UNLESS)
2988 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2989
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2990 if (ret) {
2991 txn->status = 403;
2992 /* let's log the request time */
2993 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2994 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2995 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2996 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2997 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2998 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2999
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3000 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3001 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]3002
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3003 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3004 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3005 do_stats = stats_check_uri(s->rep->prod, txn, px);
3006 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3007 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]3008 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3009 else
3010 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3011
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3012 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3013 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]3014 txn->status = 403;
3015 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3016 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3017 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3018 s->fe->fe_counters.denied_req++;
3019 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3020 s->be->be_counters.denied_req++;
3021 if (s->listener->counters)
3022 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3023 goto return_prx_cond;
3024 }
3025
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3026 /* try headers filters */
3027 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3028 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3029 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3030
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3031 /* has the request been denied ? */
3032 if (txn->flags & TX_CLDENY) {
3033 /* no need to go further */
3034 txn->status = 403;
3035 /* let's log the request time */
3036 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3037 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3038 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3039 goto return_prx_cond;
3040 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3041
3042 /* When a connection is tarpitted, we use the tarpit timeout,
3043 * which may be the same as the connect timeout if unspecified.
3044 * If unset, then set it to zero because we really want it to
3045 * eventually expire. We build the tarpit as an analyser.
3046 */
3047 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3048 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3049 /* wipe the request out so that we can drop the connection early
3050 * if the client closes first.
3051 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3052 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3053 req->analysers = 0; /* remove switching rules etc... */
3054 req->analysers |= AN_REQ_HTTP_TARPIT;
3055 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3056 if (!req->analyse_exp)
3057 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3058 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3059 return 1;
3060 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3061 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3062
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3063 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3064 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3065 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3066 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3067 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3068 * avoid to redo the same work if FE and BE have the same settings (common).
3069 * The method consists in checking if options changed between the two calls
3070 * (implying that either one is non-null, or one of them is non-null and we
3071 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3072 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3073
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3074 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3075 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3076 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3077 (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]3078 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3079
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3080 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3081 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3082 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3083 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3084 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3085 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3086 tmp = TX_CON_WANT_CLO;
3087
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3088 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3089 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3090
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3091 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3092 /* parse the Connection header and possibly clean it */
3093 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3094 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3095 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3096 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3097 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3098 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3099 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3100 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3101 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3102
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3103 /* check if client or config asks for explicit close in KAL/SCL */
3104 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3105 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3106 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3107 (!(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]3108 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3109 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3110 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3111 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3112 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3113
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3114 /* we can be blocked here because the request needs to be authenticated,
3115 * either to pass or to access stats.
3116 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3117 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_HTTP_AUTH) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3118 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3119
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3120 if (!realm)
3121 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3122
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3123 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3124 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3125 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3126 /* on 401 we still count one error, because normal browsing
3127 * won't significantly increase the counter but brute force
3128 * attempts will.
3129 */
3130 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3131 goto return_prx_cond;
3132 }
3133
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3134 /* add request headers from the rule sets in the same order */
3135 list_for_each_entry(wl, &px->req_add, list) {
3136 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3137 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]3138 ret = acl_pass(ret);
3139 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3140 ret = !ret;
3141 if (!ret)
3142 continue;
3143 }
3144
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3145 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3146 goto return_bad_req;
3147 }
3148
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3149 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3150 struct stats_admin_rule *stats_admin_rule;
3151
3152 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3153 * FIXME!!! that one is rather dangerous, we want to
3154 * make it follow standard rules (eg: clear req->analysers).
3155 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3156
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3157 /* now check whether we have some admin rules for this request */
3158 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3159 int ret = 1;
3160
3161 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3162 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]3163 ret = acl_pass(ret);
3164 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3165 ret = !ret;
3166 }
3167
3168 if (ret) {
3169 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3170 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3171 break;
3172 }
3173 }
3174
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3175 /* Was the status page requested with a POST ? */
3176 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3177 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3178 if (msg->msg_state < HTTP_MSG_100_SENT) {
3179 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3180 * send an HTTP/1.1 100 Continue intermediate response.
3181 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3182 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3183 struct hdr_ctx ctx;
3184 ctx.idx = 0;
3185 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3186 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3187 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3188 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3189 }
3190 }
3191 msg->msg_state = HTTP_MSG_100_SENT;
3192 s->logs.tv_request = now; /* update the request timer to reflect full request */
3193 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3194 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3195 /* we need more data */
3196 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3197 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3198 return 0;
3199 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3200 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3201 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3202 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3203 }
3204
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3205 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3206 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3207 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]3208 s->target = s->rep->prod->conn->target; // for logging only
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3209 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3210 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3211 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3212 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3213 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3214
3215 return 0;
3216
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3217 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3218
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3219 /* check whether we have some ACLs set to redirect this request */
3220 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3221 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3222
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3223 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3224 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]3225 ret = acl_pass(ret);
3226 if (rule->cond->pol == ACL_COND_UNLESS)
3227 ret = !ret;
3228 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3229
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3230 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3231 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3232
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3233 /* build redirect message */
3234 switch(rule->code) {
3235 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3236 msg_fmt = HTTP_303;
3237 break;
3238 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3239 msg_fmt = HTTP_301;
3240 break;
3241 case 302:
3242 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3243 msg_fmt = HTTP_302;
3244 break;
3245 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3246
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3247 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3248 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3249
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3250 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3251 case REDIRECT_TYPE_SCHEME: {
3252 const char *path;
3253 const char *host;
3254 struct hdr_ctx ctx;
3255 int pathlen;
3256 int hostlen;
3257
3258 host = "";
3259 hostlen = 0;
3260 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3261 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3262 host = ctx.line + ctx.val;
3263 hostlen = ctx.vlen;
3264 }
3265
3266 path = http_get_path(txn);
3267 /* build message using path */
3268 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3269 pathlen = txn->req.sl.rq.u_l + (req->buf->p + txn->req.sl.rq.u) - path;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3270 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3271 int qs = 0;
3272 while (qs < pathlen) {
3273 if (path[qs] == '?') {
3274 pathlen = qs;
3275 break;
3276 }
3277 qs++;
3278 }
3279 }
3280 } else {
3281 path = "/";
3282 pathlen = 1;
3283 }
3284
3285 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3286 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3287 goto return_bad_req;
3288
3289 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3290 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3291 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3292
3293 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3294 memcpy(trash.str + trash.len, "://", 3);
3295 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3296
3297 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3298 memcpy(trash.str + trash.len, host, hostlen);
3299 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3300
3301 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3302 memcpy(trash.str + trash.len, path, pathlen);
3303 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3304
3305 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3306 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3307 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3308 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3309 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3310 trash.str[trash.len] = '/';
3311 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3312 }
3313
3314 break;
3315 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3316 case REDIRECT_TYPE_PREFIX: {
3317 const char *path;
3318 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3319
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3320 path = http_get_path(txn);
3321 /* build message using path */
3322 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3323 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]3324 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3325 int qs = 0;
3326 while (qs < pathlen) {
3327 if (path[qs] == '?') {
3328 pathlen = qs;
3329 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3330 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3331 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3332 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3333 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3334 } else {
3335 path = "/";
3336 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3337 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3338
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3339 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3340 goto return_bad_req;
3341
3342 /* add prefix. Note that if prefix == "/", we don't want to
3343 * add anything, otherwise it makes it hard for the user to
3344 * configure a self-redirection.
3345 */
3346 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3347 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3348 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3349 }
3350
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3351 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3352 memcpy(trash.str + trash.len, path, pathlen);
3353 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3354
3355 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3356 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3357 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3358 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3359 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3360 trash.str[trash.len] = '/';
3361 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3362 }
3363
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3364 break;
3365 }
3366 case REDIRECT_TYPE_LOCATION:
3367 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3368 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3369 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3370
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3371 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3372 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3373 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3374 break;
3375 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3376
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3377 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3378 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3379 trash.len += 14;
3380 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3381 trash.len += rule->cookie_len;
3382 memcpy(trash.str + trash.len, "\r\n", 2);
3383 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3384 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3385
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3386 /* add end of headers and the keep-alive/close status.
3387 * We may choose to set keep-alive if the Location begins
3388 * with a slash, because the client will come back to the
3389 * same server.
3390 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3391 txn->status = rule->code;
3392 /* let's log the request time */
3393 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3394
3395 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3396 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3397 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3398 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3399 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3400 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3401 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3402 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3403 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3404 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3405 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3406 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3407 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3408 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3409 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3410 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3411 trash.len += 4;
3412 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3413 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3414 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3415 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3416 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3417 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3418 txn->req.msg_state = HTTP_MSG_CLOSED;
3419 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3420 break;
3421 } else {
3422 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3423 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3424 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3425 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3426 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3427 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3428 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3429 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3430 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3431 goto return_prx_cond;
3432 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3433 }
3434 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3435
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3436 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3437 * If this happens, then the data will not come immediately, so we must
3438 * send all what we have without waiting. Note that due to the small gain
3439 * 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]3440 * 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]3441 * itself once used.
3442 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3443 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3444
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3445 /* that's OK for us now, let's move on to next analysers */
3446 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3447
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3448 return_bad_req:
3449 /* We centralize bad requests processing here */
3450 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3451 /* we detected a parsing error. We want to archive this request
3452 * in the dedicated proxy area for later troubleshooting.
3453 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3454 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]3455 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3456
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3457 txn->req.msg_state = HTTP_MSG_ERROR;
3458 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3459 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3460
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3461 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3462 if (s->listener->counters)
3463 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3464
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3465 return_prx_cond:
3466 if (!(s->flags & SN_ERR_MASK))
3467 s->flags |= SN_ERR_PRXCOND;
3468 if (!(s->flags & SN_FINST_MASK))
3469 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3470
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3471 req->analysers = 0;
3472 req->analyse_exp = TICK_ETERNITY;
3473 return 0;
3474}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3475
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3476/* This function performs all the processing enabled for the current request.
3477 * It returns 1 if the processing can continue on next analysers, or zero if it
3478 * needs more data, encounters an error, or wants to immediately abort the
3479 * request. It relies on buffers flags, and updates s->req->analysers.
3480 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3481int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3482{
3483 struct http_txn *txn = &s->txn;
3484 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3485
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3486 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3487 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3488 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3489 return 0;
3490 }
3491
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3492 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]3493 now_ms, __FUNCTION__,
3494 s,
3495 req,
3496 req->rex, req->wex,
3497 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3498 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3499 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3500
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3501 if (s->fe->comp || s->be->comp)
3502 select_compression_request_header(s, req->buf);
3503
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3504 /*
3505 * Right now, we know that we have processed the entire headers
3506 * and that unwanted requests have been filtered out. We can do
3507 * whatever we want with the remaining request. Also, now we
3508 * may have separate values for ->fe, ->be.
3509 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3510
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3511 /*
3512 * If HTTP PROXY is set we simply get remote server address
3513 * parsing incoming request.
3514 */
3515 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3516 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]3517 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3519 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3520 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3521 * Note that doing so might move headers in the request, but
3522 * the fields will stay coherent and the URI will not move.
3523 * This should only be performed in the backend.
3524 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3525 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3526 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3527 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3528
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3529 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3530 * 8: the appsession cookie was looked up very early in 1.2,
3531 * so let's do the same now.
3532 */
3533
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3534 /* It needs to look into the URI unless persistence must be ignored */
3535 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3536 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]3537 }
3538
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3539 /* add unique-id if "header-unique-id" is specified */
3540
3541 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3542 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3543
3544 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3545 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3546 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3547 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3548 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3549 goto return_bad_req;
3550 }
3551
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3552 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3553 * 9: add X-Forwarded-For if either the frontend or the backend
3554 * asks for it.
3555 */
3556 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3557 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3558 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3559 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3560 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : s->fe->fwdfor_hdr_len,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3561 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3562 /* The header is set to be added only if none is present
3563 * and we found it, so don't do anything.
3564 */
3565 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3566 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3567 /* Add an X-Forwarded-For header unless the source IP is
3568 * in the 'except' network range.
3569 */
3570 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3571 (((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]3572 != s->fe->except_net.s_addr) &&
3573 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3574 (((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]3575 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3576 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3577 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3578 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3579
3580 /* Note: we rely on the backend to get the header name to be used for
3581 * x-forwarded-for, because the header is really meant for the backends.
3582 * However, if the backend did not specify any option, we have to rely
3583 * on the frontend's header name.
3584 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3585 if (s->be->fwdfor_hdr_len) {
3586 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3587 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3588 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3589 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3590 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3591 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3592 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3593
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3594 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3595 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3596 }
3597 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3598 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3599 /* FIXME: for the sake of completeness, we should also support
3600 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3601 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3602 int len;
3603 char pn[INET6_ADDRSTRLEN];
3604 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3605 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3606 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3607
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3608 /* Note: we rely on the backend to get the header name to be used for
3609 * x-forwarded-for, because the header is really meant for the backends.
3610 * However, if the backend did not specify any option, we have to rely
3611 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3612 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3613 if (s->be->fwdfor_hdr_len) {
3614 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3615 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3616 } else {
3617 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3618 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3619 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3620 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3621
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3622 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3623 goto return_bad_req;
3624 }
3625 }
3626
3627 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3628 * 10: add X-Original-To if either the frontend or the backend
3629 * asks for it.
3630 */
3631 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3632
3633 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3634 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3635 /* Add an X-Original-To header unless the destination IP is
3636 * in the 'except' network range.
3637 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3638 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3639
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3640 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3641 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3642 (((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]3643 != s->fe->except_to.s_addr) &&
3644 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3645 (((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]3646 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3647 int len;
3648 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3649 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3650
3651 /* Note: we rely on the backend to get the header name to be used for
3652 * x-original-to, because the header is really meant for the backends.
3653 * However, if the backend did not specify any option, we have to rely
3654 * on the frontend's header name.
3655 */
3656 if (s->be->orgto_hdr_len) {
3657 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3658 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3659 } else {
3660 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3661 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3662 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3663 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3664
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3665 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3666 goto return_bad_req;
3667 }
3668 }
3669 }
3670
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3671 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3672 * If an "Upgrade" token is found, the header is left untouched in order not to have
3673 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3674 * "Upgrade" is present in the Connection header.
3675 */
3676 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3677 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3678 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3679 unsigned int want_flags = 0;
3680
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3681 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3682 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3683 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3684 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3685 want_flags |= TX_CON_CLO_SET;
3686 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3687 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3688 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3689 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3690 want_flags |= TX_CON_KAL_SET;
3691 }
3692
3693 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3694 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3695 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3696
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3697
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3698 /* If we have no server assigned yet and we're balancing on url_param
3699 * with a POST request, we may be interested in checking the body for
3700 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3701 */
3702 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3703 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3704 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3705 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3706 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3707 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3708 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3709
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3710 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3711 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3712#ifdef TCP_QUICKACK
3713 /* We expect some data from the client. Unless we know for sure
3714 * we already have a full request, we have to re-enable quick-ack
3715 * in case we previously disabled it, otherwise we might cause
3716 * the client to delay further data.
3717 */
3718 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3719 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3720 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3721 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3722#endif
3723 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3724
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3725 /*************************************************************
3726 * OK, that's finished for the headers. We have done what we *
3727 * could. Let's switch to the DATA state. *
3728 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3729 req->analyse_exp = TICK_ETERNITY;
3730 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3731
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3732 /* if the server closes the connection, we want to immediately react
3733 * and close the socket to save packets and syscalls.
3734 */
3735 req->cons->flags |= SI_FL_NOHALF;
3736
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3737 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3738 /* OK let's go on with the BODY now */
3739 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3740
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3741 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3742 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3743 /* we detected a parsing error. We want to archive this request
3744 * in the dedicated proxy area for later troubleshooting.
3745 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3746 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]3747 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3748
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3749 txn->req.msg_state = HTTP_MSG_ERROR;
3750 txn->status = 400;
3751 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3752 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3753
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3754 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3755 if (s->listener->counters)
3756 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3757
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3758 if (!(s->flags & SN_ERR_MASK))
3759 s->flags |= SN_ERR_PRXCOND;
3760 if (!(s->flags & SN_FINST_MASK))
3761 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3762 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3763}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3764
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3765/* This function is an analyser which processes the HTTP tarpit. It always
3766 * returns zero, at the beginning because it prevents any other processing
3767 * from occurring, and at the end because it terminates the request.
3768 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3769int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3770{
3771 struct http_txn *txn = &s->txn;
3772
3773 /* This connection is being tarpitted. The CLIENT side has
3774 * already set the connect expiration date to the right
3775 * timeout. We just have to check that the client is still
3776 * there and that the timeout has not expired.
3777 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3778 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3779 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3780 !tick_is_expired(req->analyse_exp, now_ms))
3781 return 0;
3782
3783 /* We will set the queue timer to the time spent, just for
3784 * logging purposes. We fake a 500 server error, so that the
3785 * attacker will not suspect his connection has been tarpitted.
3786 * It will not cause trouble to the logs because we can exclude
3787 * the tarpitted connections by filtering on the 'PT' status flags.
3788 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3789 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3790
3791 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3792 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3793 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3794
3795 req->analysers = 0;
3796 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3797
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3798 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3799 if (s->listener->counters)
3800 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3801
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3802 if (!(s->flags & SN_ERR_MASK))
3803 s->flags |= SN_ERR_PRXCOND;
3804 if (!(s->flags & SN_FINST_MASK))
3805 s->flags |= SN_FINST_T;
3806 return 0;
3807}
3808
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3809/* This function is an analyser which processes the HTTP request body. It looks
3810 * for parameters to be used for the load balancing algorithm (url_param). It
3811 * must only be called after the standard HTTP request processing has occurred,
3812 * because it expects the request to be parsed. It returns zero if it needs to
3813 * read more data, or 1 once it has completed its analysis.
3814 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3815int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3816{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3817 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3818 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3819 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3820
3821 /* We have to parse the HTTP request body to find any required data.
3822 * "balance url_param check_post" should have been the only way to get
3823 * into this. We were brought here after HTTP header analysis, so all
3824 * related structures are ready.
3825 */
3826
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3827 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3828 goto missing_data;
3829
3830 if (msg->msg_state < HTTP_MSG_100_SENT) {
3831 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3832 * send an HTTP/1.1 100 Continue intermediate response.
3833 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3834 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3835 struct hdr_ctx ctx;
3836 ctx.idx = 0;
3837 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3838 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3839 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3840 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3841 }
3842 }
3843 msg->msg_state = HTTP_MSG_100_SENT;
3844 }
3845
3846 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3847 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3848 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3849 * is still null. We must save the body in msg->next because it
3850 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3851 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3852 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3853
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3854 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3855 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3856 else
3857 msg->msg_state = HTTP_MSG_DATA;
3858 }
3859
3860 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3861 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3862 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3863 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3864 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3865 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3866
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3867 if (!ret)
3868 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3869 else if (ret < 0) {
3870 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3871 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3872 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3873 }
3874
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3875 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3876 * We have the first data byte is in msg->sov. We're waiting for at
3877 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3878 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3879
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3880 if (msg->body_len < limit)
3881 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3882
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3883 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3884 goto http_end;
3885
3886 missing_data:
3887 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3888 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3889 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3890 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3891 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3892
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3893 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3894 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3895 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3896
3897 if (!(s->flags & SN_ERR_MASK))
3898 s->flags |= SN_ERR_CLITO;
3899 if (!(s->flags & SN_FINST_MASK))
3900 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3901 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3902 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3903
3904 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3905 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]3906 /* Not enough data. We'll re-use the http-request
3907 * timeout here. Ideally, we should set the timeout
3908 * relative to the accept() date. We just set the
3909 * request timeout once at the beginning of the
3910 * request.
3911 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3912 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3913 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3914 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3915 return 0;
3916 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3917
3918 http_end:
3919 /* The situation will not evolve, so let's give up on the analysis. */
3920 s->logs.tv_request = now; /* update the request timer to reflect full request */
3921 req->analysers &= ~an_bit;
3922 req->analyse_exp = TICK_ETERNITY;
3923 return 1;
3924
3925 return_bad_req: /* let's centralize all bad requests */
3926 txn->req.msg_state = HTTP_MSG_ERROR;
3927 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3928 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3929
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3930 if (!(s->flags & SN_ERR_MASK))
3931 s->flags |= SN_ERR_PRXCOND;
3932 if (!(s->flags & SN_FINST_MASK))
3933 s->flags |= SN_FINST_R;
3934
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3935 return_err_msg:
3936 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3937 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3938 if (s->listener->counters)
3939 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3940 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3941}
3942
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3943/* send a server's name with an outgoing request over an established connection.
3944 * Note: this function is designed to be called once the request has been scheduled
3945 * for being forwarded. This is the reason why it rewinds the buffer before
3946 * proceeding.
3947 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3948int 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]3949
3950 struct hdr_ctx ctx;
3951
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3952 char *hdr_name = be->server_id_hdr_name;
3953 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3954 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3955 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3956 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3957
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3958 ctx.idx = 0;
3959
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3960 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3961 if (old_o) {
3962 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3963 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3964 }
3965
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3966 old_i = chn->buf->i;
3967 while (http_find_header2(hdr_name, hdr_name_len, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3968 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3969 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3970 }
3971
3972 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3973 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3974 memcpy(hdr_val, hdr_name, hdr_name_len);
3975 hdr_val += hdr_name_len;
3976 *hdr_val++ = ':';
3977 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3978 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
3979 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, hdr_val - trash.str);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3980
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3981 if (old_o) {
3982 /* If this was a forwarded request, we must readjust the amount of
3983 * data to be forwarded in order to take into account the size
3984 * variations.
3985 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3986 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3987 }
3988
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3989 return 0;
3990}
3991
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3992/* Terminate current transaction and prepare a new one. This is very tricky
3993 * right now but it works.
3994 */
3995void http_end_txn_clean_session(struct session *s)
3996{
3997 /* FIXME: We need a more portable way of releasing a backend's and a
3998 * server's connections. We need a safer way to reinitialize buffer
3999 * flags. We also need a more accurate method for computing per-request
4000 * data.
4001 */
4002 http_silent_debug(__LINE__, s);
4003
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4004 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4005 si_shutr(s->req->cons);
4006 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4007
4008 http_silent_debug(__LINE__, s);
4009
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4010 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4011 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4012 if (unlikely(s->srv_conn))
4013 sess_change_server(s, NULL);
4014 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4015
4016 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4017 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4018 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4019
4020 if (s->txn.status) {
4021 int n;
4022
4023 n = s->txn.status / 100;
4024 if (n < 1 || n > 5)
4025 n = 0;
4026
4027 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4028 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4029
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4030 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4031 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4032 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4033 }
4034
4035 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4036 s->logs.bytes_in -= s->req->buf->i;
4037 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4038
4039 /* let's do a final log if we need it */
4040 if (s->logs.logwait &&
4041 !(s->flags & SN_MONITOR) &&
4042 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4043 s->do_log(s);
4044 }
4045
4046 s->logs.accept_date = date; /* user-visible date for logging */
4047 s->logs.tv_accept = now; /* corrected date for internal use */
4048 tv_zero(&s->logs.tv_request);
4049 s->logs.t_queue = -1;
4050 s->logs.t_connect = -1;
4051 s->logs.t_data = -1;
4052 s->logs.t_close = 0;
4053 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4054 s->logs.srv_queue_size = 0; /* we will get this number soon */
4055
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4056 s->logs.bytes_in = s->req->total = s->req->buf->i;
4057 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4058
4059 if (s->pend_pos)
4060 pendconn_free(s->pend_pos);
4061
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4062 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4063 if (s->flags & SN_CURR_SESS) {
4064 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4065 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4066 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4067 if (may_dequeue_tasks(objt_server(s->target), s->be))
4068 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4069 }
4070
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4071 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4072
4073 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4074 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4075 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4076 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4077 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4078 s->req->cons->err_loc = NULL;
4079 s->req->cons->exp = TICK_ETERNITY;
4080 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4081 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4082 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]4083 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]4084 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4085
4086 if (s->flags & SN_COMP_READY)
4087 s->comp_algo->end(&s->comp_ctx);
4088 s->comp_algo = NULL;
4089 s->flags &= ~SN_COMP_READY;
4090
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4091 s->txn.meth = 0;
4092 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4093 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4094 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4095 s->req->cons->flags |= SI_FL_INDEP_STR;
4096
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4097 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4098 s->req->flags |= CF_NEVER_WAIT;
4099 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4100 }
4101
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4102 /* if the request buffer is not empty, it means we're
4103 * about to process another request, so send pending
4104 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4105 * Just don't do this if the buffer is close to be full,
4106 * because the request will wait for it to flush a little
4107 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4108 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4109 if (s->req->buf->i) {
4110 if (s->rep->buf->o &&
4111 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4112 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]4113 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4114 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4115
4116 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4117 channel_auto_read(s->req);
4118 channel_auto_close(s->req);
4119 channel_auto_read(s->rep);
4120 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4121
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4122 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4123 s->rep->analysers = 0;
4124
4125 http_silent_debug(__LINE__, s);
4126}
4127
4128
4129/* This function updates the request state machine according to the response
4130 * state machine and buffer flags. It returns 1 if it changes anything (flag
4131 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4132 * it is only used to find when a request/response couple is complete. Both
4133 * this function and its equivalent should loop until both return zero. It
4134 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4135 */
4136int http_sync_req_state(struct session *s)
4137{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4138 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4139 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4140 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4141 unsigned int old_state = txn->req.msg_state;
4142
4143 http_silent_debug(__LINE__, s);
4144 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4145 return 0;
4146
4147 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4148 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4149 * We can shut the read side unless we want to abort_on_close,
4150 * or we have a POST request. The issue with POST requests is
4151 * that some browsers still send a CRLF after the request, and
4152 * this CRLF must be read so that it does not remain in the kernel
4153 * buffers, otherwise a close could cause an RST on some systems
4154 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4155 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4156 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4157 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4158
4159 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4160 goto wait_other_side;
4161
4162 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4163 /* The server has not finished to respond, so we
4164 * don't want to move in order not to upset it.
4165 */
4166 goto wait_other_side;
4167 }
4168
4169 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4170 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4171 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4172 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4173 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4174 goto wait_other_side;
4175 }
4176
4177 /* When we get here, it means that both the request and the
4178 * response have finished receiving. Depending on the connection
4179 * mode, we'll have to wait for the last bytes to leave in either
4180 * direction, and sometimes for a close to be effective.
4181 */
4182
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4183 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4184 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4185 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4186 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4187 }
4188 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4189 /* Option forceclose is set, or either side wants to close,
4190 * let's enforce it now that we're not expecting any new
4191 * data to come. The caller knows the session is complete
4192 * once both states are CLOSED.
4193 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4194 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4195 channel_shutr_now(chn);
4196 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4197 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4198 }
4199 else {
4200 /* The last possible modes are keep-alive and tunnel. Since tunnel
4201 * mode does not set the body analyser, we can't reach this place
4202 * in tunnel mode, so we're left with keep-alive only.
4203 * This mode is currently not implemented, we switch to tunnel mode.
4204 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4205 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4206 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4207 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4208 }
4209
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4210 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4211 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4212 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4213
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4214 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4215 txn->req.msg_state = HTTP_MSG_CLOSING;
4216 goto http_msg_closing;
4217 }
4218 else {
4219 txn->req.msg_state = HTTP_MSG_CLOSED;
4220 goto http_msg_closed;
4221 }
4222 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4223 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4224 }
4225
4226 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4227 http_msg_closing:
4228 /* nothing else to forward, just waiting for the output buffer
4229 * to be empty and for the shutw_now to take effect.
4230 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4231 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4232 txn->req.msg_state = HTTP_MSG_CLOSED;
4233 goto http_msg_closed;
4234 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4235 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4236 txn->req.msg_state = HTTP_MSG_ERROR;
4237 goto wait_other_side;
4238 }
4239 }
4240
4241 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4242 http_msg_closed:
4243 goto wait_other_side;
4244 }
4245
4246 wait_other_side:
4247 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4248 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4249}
4250
4251
4252/* This function updates the response state machine according to the request
4253 * state machine and buffer flags. It returns 1 if it changes anything (flag
4254 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4255 * it is only used to find when a request/response couple is complete. Both
4256 * this function and its equivalent should loop until both return zero. It
4257 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4258 */
4259int http_sync_res_state(struct session *s)
4260{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4261 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4262 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4263 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4264 unsigned int old_state = txn->rsp.msg_state;
4265
4266 http_silent_debug(__LINE__, s);
4267 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4268 return 0;
4269
4270 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4271 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4272 * still monitor the server connection for a possible close
4273 * while the request is being uploaded, so we don't disable
4274 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4275 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4276 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4277
4278 if (txn->req.msg_state == HTTP_MSG_ERROR)
4279 goto wait_other_side;
4280
4281 if (txn->req.msg_state < HTTP_MSG_DONE) {
4282 /* The client seems to still be sending data, probably
4283 * because we got an error response during an upload.
4284 * We have the choice of either breaking the connection
4285 * or letting it pass through. Let's do the later.
4286 */
4287 goto wait_other_side;
4288 }
4289
4290 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4291 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4292 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4293 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4294 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4295 goto wait_other_side;
4296 }
4297
4298 /* When we get here, it means that both the request and the
4299 * response have finished receiving. Depending on the connection
4300 * mode, we'll have to wait for the last bytes to leave in either
4301 * direction, and sometimes for a close to be effective.
4302 */
4303
4304 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4305 /* Server-close mode : shut read and wait for the request
4306 * side to close its output buffer. The caller will detect
4307 * when we're in DONE and the other is in CLOSED and will
4308 * catch that for the final cleanup.
4309 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4310 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4311 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4312 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4313 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4314 /* Option forceclose is set, or either side wants to close,
4315 * let's enforce it now that we're not expecting any new
4316 * data to come. The caller knows the session is complete
4317 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4318 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4319 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4320 channel_shutr_now(chn);
4321 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4322 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4323 }
4324 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4325 /* The last possible modes are keep-alive and tunnel. Since tunnel
4326 * mode does not set the body analyser, we can't reach this place
4327 * in tunnel mode, so we're left with keep-alive only.
4328 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4329 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4330 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4331 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4332 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4333 }
4334
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4335 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4336 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4337 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4338 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4339 goto http_msg_closing;
4340 }
4341 else {
4342 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4343 goto http_msg_closed;
4344 }
4345 }
4346 goto wait_other_side;
4347 }
4348
4349 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4350 http_msg_closing:
4351 /* nothing else to forward, just waiting for the output buffer
4352 * to be empty and for the shutw_now to take effect.
4353 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4354 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4355 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4356 goto http_msg_closed;
4357 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4358 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4359 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4360 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4361 if (objt_server(s->target))
4362 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4363 goto wait_other_side;
4364 }
4365 }
4366
4367 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4368 http_msg_closed:
4369 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4370 bi_erase(chn);
4371 channel_auto_close(chn);
4372 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4373 goto wait_other_side;
4374 }
4375
4376 wait_other_side:
4377 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4378 /* We force the response to leave immediately if we're waiting for the
4379 * other side, since there is no pending shutdown to push it out.
4380 */
4381 if (!channel_is_empty(chn))
4382 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4383 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4384}
4385
4386
4387/* Resync the request and response state machines. Return 1 if either state
4388 * changes.
4389 */
4390int http_resync_states(struct session *s)
4391{
4392 struct http_txn *txn = &s->txn;
4393 int old_req_state = txn->req.msg_state;
4394 int old_res_state = txn->rsp.msg_state;
4395
4396 http_silent_debug(__LINE__, s);
4397 http_sync_req_state(s);
4398 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4399 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4400 if (!http_sync_res_state(s))
4401 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4402 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4403 if (!http_sync_req_state(s))
4404 break;
4405 }
4406 http_silent_debug(__LINE__, s);
4407 /* OK, both state machines agree on a compatible state.
4408 * There are a few cases we're interested in :
4409 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4410 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4411 * directions, so let's simply disable both analysers.
4412 * - HTTP_MSG_CLOSED on the response only means we must abort the
4413 * request.
4414 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4415 * with server-close mode means we've completed one request and we
4416 * must re-initialize the server connection.
4417 */
4418
4419 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4420 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4421 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4422 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4423 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4424 channel_auto_close(s->req);
4425 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4426 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4427 channel_auto_close(s->rep);
4428 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4429 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4430 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4431 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4432 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4433 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4434 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4435 channel_auto_close(s->rep);
4436 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4437 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4438 channel_abort(s->req);
4439 channel_auto_close(s->req);
4440 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4441 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4442 }
4443 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4444 txn->rsp.msg_state == HTTP_MSG_DONE &&
4445 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4446 /* server-close: terminate this server connection and
4447 * reinitialize a fresh-new transaction.
4448 */
4449 http_end_txn_clean_session(s);
4450 }
4451
4452 http_silent_debug(__LINE__, s);
4453 return txn->req.msg_state != old_req_state ||
4454 txn->rsp.msg_state != old_res_state;
4455}
4456
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4457/* This function is an analyser which forwards request body (including chunk
4458 * sizes if any). It is called as soon as we must forward, even if we forward
4459 * zero byte. The only situation where it must not be called is when we're in
4460 * tunnel mode and we want to forward till the close. It's used both to forward
4461 * remaining data and to resync after end of body. It expects the msg_state to
4462 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4463 * 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]4464 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4465 * bytes of pending data + the headers if not already done (between sol and sov).
4466 * 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]4467 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4468int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4469{
4470 struct http_txn *txn = &s->txn;
4471 struct http_msg *msg = &s->txn.req;
4472
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4473 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4474 return 0;
4475
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4476 if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4477 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4478 /* Output closed while we were sending data. We must abort and
4479 * wake the other side up.
4480 */
4481 msg->msg_state = HTTP_MSG_ERROR;
4482 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4483 return 1;
4484 }
4485
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4486 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4487 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4488
4489 /* Note that we don't have to send 100-continue back because we don't
4490 * need the data to complete our job, and it's up to the server to
4491 * decide whether to return 100, 417 or anything else in return of
4492 * an "Expect: 100-continue" header.
4493 */
4494
4495 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4496 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4497 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4498 * is still null. We must save the body in msg->next because it
4499 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4500 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4501 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4502
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4503 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4504 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4505 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4506 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4507 }
4508
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4509 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4510 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4511
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4512 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4513 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4514 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4515 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4516 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4517 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4518 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4519 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4520 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4521
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4522 if (msg->msg_state == HTTP_MSG_DATA) {
4523 /* must still forward */
4524 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4525 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4526
4527 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4528 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4529 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4530 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4531 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4532 }
4533 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4534 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4535 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4536 * TRAILERS state.
4537 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4538 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4539
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4540 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4541 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4542 else if (ret < 0) {
4543 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4544 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4545 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]4546 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4547 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4548 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4549 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4550 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4551 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4552 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4553
4554 if (ret == 0)
4555 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4556 else if (ret < 0) {
4557 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4558 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4559 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_CRLF, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4560 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4561 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4562 /* we're in MSG_CHUNK_SIZE now */
4563 }
4564 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4565 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4566
4567 if (ret == 0)
4568 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4569 else if (ret < 0) {
4570 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4571 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4572 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]4573 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4574 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4575 /* we're in HTTP_MSG_DONE now */
4576 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4577 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4578 int old_state = msg->msg_state;
4579
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4580 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4581 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4582 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4583 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4584 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4585 if (http_resync_states(s)) {
4586 /* some state changes occurred, maybe the analyser
4587 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4588 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4589 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4590 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4591 /* request errors are most likely due to
4592 * the server aborting the transfer.
4593 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4594 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4595 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4596 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4597 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4598 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4599 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4600 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4601 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4602
4603 /* If "option abortonclose" is set on the backend, we
4604 * want to monitor the client's connection and forward
4605 * any shutdown notification to the server, which will
4606 * decide whether to close or to go on processing the
4607 * request.
4608 */
4609 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4610 channel_auto_read(req);
4611 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4612 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4613 else if (s->txn.meth == HTTP_METH_POST) {
4614 /* POST requests may require to read extra CRLF
4615 * sent by broken browsers and which could cause
4616 * an RST to be sent upon close on some systems
4617 * (eg: Linux).
4618 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4619 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4620 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4621
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4622 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4623 }
4624 }
4625
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4626 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4627 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4628 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4629 if (!(s->flags & SN_ERR_MASK))
4630 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4631 if (!(s->flags & SN_FINST_MASK)) {
4632 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4633 s->flags |= SN_FINST_H;
4634 else
4635 s->flags |= SN_FINST_D;
4636 }
4637
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4638 s->fe->fe_counters.cli_aborts++;
4639 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4640 if (objt_server(s->target))
4641 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4642
4643 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4644 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4645
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4646 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4647 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4648 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4649
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4650 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4651 * 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]4652 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4653 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4654 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4655
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4656 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4657 * 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]4658 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4659 * modes are already handled by the stream sock layer. We must not do
4660 * this in content-length mode because it could present the MSG_MORE
4661 * flag with the last block of forwarded data, which would cause an
4662 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4663 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4664 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4665 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4666
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4667 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4668 return 0;
4669
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4670 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4671 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4672 if (s->listener->counters)
4673 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4674 return_bad_req_stats_ok:
4675 txn->req.msg_state = HTTP_MSG_ERROR;
4676 if (txn->status) {
4677 /* Note: we don't send any error if some data were already sent */
4678 stream_int_retnclose(req->prod, NULL);
4679 } else {
4680 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4681 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4682 }
4683 req->analysers = 0;
4684 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]4685
4686 if (!(s->flags & SN_ERR_MASK))
4687 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4688 if (!(s->flags & SN_FINST_MASK)) {
4689 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4690 s->flags |= SN_FINST_H;
4691 else
4692 s->flags |= SN_FINST_D;
4693 }
4694 return 0;
4695
4696 aborted_xfer:
4697 txn->req.msg_state = HTTP_MSG_ERROR;
4698 if (txn->status) {
4699 /* Note: we don't send any error if some data were already sent */
4700 stream_int_retnclose(req->prod, NULL);
4701 } else {
4702 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4703 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4704 }
4705 req->analysers = 0;
4706 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4707
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4708 s->fe->fe_counters.srv_aborts++;
4709 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4710 if (objt_server(s->target))
4711 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4712
4713 if (!(s->flags & SN_ERR_MASK))
4714 s->flags |= SN_ERR_SRVCL;
4715 if (!(s->flags & SN_FINST_MASK)) {
4716 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4717 s->flags |= SN_FINST_H;
4718 else
4719 s->flags |= SN_FINST_D;
4720 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4721 return 0;
4722}
4723
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4724/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4725 * processing can continue on next analysers, or zero if it either needs more
4726 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4727 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4728 * when it has nothing left to do, and may remove any analyser when it wants to
4729 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4730 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4731int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4732{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4733 struct http_txn *txn = &s->txn;
4734 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4735 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4736 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4737 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4738 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4739
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4740 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]4741 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4742 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4743 rep,
4744 rep->rex, rep->wex,
4745 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4746 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4747 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4748
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4749 /*
4750 * Now parse the partial (or complete) lines.
4751 * We will check the response syntax, and also join multi-line
4752 * headers. An index of all the lines will be elaborated while
4753 * parsing.
4754 *
4755 * For the parsing, we use a 28 states FSM.
4756 *
4757 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4758 * rep->buf->p = beginning of response
4759 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4760 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4761 * msg->eol = end of current header or line (LF or CRLF)
4762 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4763 */
4764
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4765 /* There's a protected area at the end of the buffer for rewriting
4766 * purposes. We don't want to start to parse the request if the
4767 * protected area is affected, because we may have to move processed
4768 * data later, which is much more complicated.
4769 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4770 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4771 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4772 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4773 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4774 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4775 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4776 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4777 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4778 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4779 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4780 return 0;
4781 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4782 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4783 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4784 }
4785
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4786 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4787 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4788 }
4789
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4790 /* 1: we might have to print this header in debug mode */
4791 if (unlikely((global.mode & MODE_DEBUG) &&
4792 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4793 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4794 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4795
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4796 sol = rep->buf->p;
4797 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4798 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4799
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4800 sol += hdr_idx_first_pos(&txn->hdr_idx);
4801 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4802
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4803 while (cur_idx) {
4804 eol = sol + txn->hdr_idx.v[cur_idx].len;
4805 debug_hdr("srvhdr", s, sol, eol);
4806 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4807 cur_idx = txn->hdr_idx.v[cur_idx].next;
4808 }
4809 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4810
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4811 /*
4812 * Now we quickly check if we have found a full valid response.
4813 * If not so, we check the FD and buffer states before leaving.
4814 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4815 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4816 * responses are checked first.
4817 *
4818 * Depending on whether the client is still there or not, we
4819 * may send an error response back or not. Note that normally
4820 * we should only check for HTTP status there, and check I/O
4821 * errors somewhere else.
4822 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4823
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4824 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4825 /* Invalid response */
4826 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4827 /* we detected a parsing error. We want to archive this response
4828 * in the dedicated proxy area for later troubleshooting.
4829 */
4830 hdr_response_bad:
4831 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4832 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]4833
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4834 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4835 if (objt_server(s->target)) {
4836 objt_server(s->target)->counters.failed_resp++;
4837 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4838 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4839 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4840 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4841 rep->analysers = 0;
4842 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4843 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4844 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4845 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4846
4847 if (!(s->flags & SN_ERR_MASK))
4848 s->flags |= SN_ERR_PRXCOND;
4849 if (!(s->flags & SN_FINST_MASK))
4850 s->flags |= SN_FINST_H;
4851
4852 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4853 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4854
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4855 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4856 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4857 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4858 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4859 goto hdr_response_bad;
4860 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4861
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4862 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4863 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4864 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4865 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]4866
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4867 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4868 if (objt_server(s->target)) {
4869 objt_server(s->target)->counters.failed_resp++;
4870 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4871 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4872
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4873 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4874 rep->analysers = 0;
4875 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4876 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4877 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4878 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4879
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4880 if (!(s->flags & SN_ERR_MASK))
4881 s->flags |= SN_ERR_SRVCL;
4882 if (!(s->flags & SN_FINST_MASK))
4883 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4884 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4885 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4886
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4887 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4888 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4889 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4890 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]4891
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4892 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4893 if (objt_server(s->target)) {
4894 objt_server(s->target)->counters.failed_resp++;
4895 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4896 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4897
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4898 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4899 rep->analysers = 0;
4900 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4901 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4902 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4903 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4904
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4905 if (!(s->flags & SN_ERR_MASK))
4906 s->flags |= SN_ERR_SRVTO;
4907 if (!(s->flags & SN_FINST_MASK))
4908 s->flags |= SN_FINST_H;
4909 return 0;
4910 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4911
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4912 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4913 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4914 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4915 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]4916
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4917 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4918 if (objt_server(s->target)) {
4919 objt_server(s->target)->counters.failed_resp++;
4920 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4921 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4922
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4923 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4924 rep->analysers = 0;
4925 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4926 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4927 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4928 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4929
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4930 if (!(s->flags & SN_ERR_MASK))
4931 s->flags |= SN_ERR_SRVCL;
4932 if (!(s->flags & SN_FINST_MASK))
4933 s->flags |= SN_FINST_H;
4934 return 0;
4935 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4936
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4937 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4938 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4939 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4940 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]4941
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4942 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4943 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4944 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4945
4946 if (!(s->flags & SN_ERR_MASK))
4947 s->flags |= SN_ERR_CLICL;
4948 if (!(s->flags & SN_FINST_MASK))
4949 s->flags |= SN_FINST_H;
4950
4951 /* process_session() will take care of the error */
4952 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4953 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4954
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4955 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4956 return 0;
4957 }
4958
4959 /* More interesting part now : we know that we have a complete
4960 * response which at least looks like HTTP. We have an indicator
4961 * of each header's length, so we can parse them quickly.
4962 */
4963
4964 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4965 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]4966
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4967 /*
4968 * 1: get the status code
4969 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4970 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4971 if (n < 1 || n > 5)
4972 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4973 /* when the client triggers a 4xx from the server, it's most often due
4974 * to a missing object or permission. These events should be tracked
4975 * because if they happen often, it may indicate a brute force or a
4976 * vulnerability scan.
4977 */
4978 if (n == 4)
4979 session_inc_http_err_ctr(s);
4980
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4981 if (objt_server(s->target))
4982 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4983
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4984 /* check if the response is HTTP/1.1 or above */
4985 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4986 ((rep->buf->p[5] > '1') ||
4987 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4988 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4989
4990 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4991 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_HDR_CONN_UPG|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4992
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4993 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4994 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4995
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4996 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]4997
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]4998 /* Adjust server's health based on status code. Note: status codes 501
4999 * and 505 are triggered on demand by client request, so we must not
5000 * count them as server failures.
5001 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5002 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5003 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5004 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5005 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5006 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5007 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5008
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5009 /*
5010 * 2: check for cacheability.
5011 */
5012
5013 switch (txn->status) {
5014 case 200:
5015 case 203:
5016 case 206:
5017 case 300:
5018 case 301:
5019 case 410:
5020 /* RFC2616 @13.4:
5021 * "A response received with a status code of
5022 * 200, 203, 206, 300, 301 or 410 MAY be stored
5023 * by a cache (...) unless a cache-control
5024 * directive prohibits caching."
5025 *
5026 * RFC2616 @9.5: POST method :
5027 * "Responses to this method are not cacheable,
5028 * unless the response includes appropriate
5029 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5030 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5031 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5032 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5033 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5034 break;
5035 default:
5036 break;
5037 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5038
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5039 /*
5040 * 3: we may need to capture headers
5041 */
5042 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5043 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5044 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5045 txn->rsp.cap, s->fe->rsp_cap);
5046
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5047 /* 4: determine the transfer-length.
5048 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5049 * the presence of a message-body in a RESPONSE and its transfer length
5050 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5051 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5052 * All responses to the HEAD request method MUST NOT include a
5053 * message-body, even though the presence of entity-header fields
5054 * might lead one to believe they do. All 1xx (informational), 204
5055 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5056 * message-body. All other responses do include a message-body,
5057 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5058 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5059 * 1. Any response which "MUST NOT" include a message-body (such as the
5060 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5061 * always terminated by the first empty line after the header fields,
5062 * regardless of the entity-header fields present in the message.
5063 *
5064 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5065 * the "chunked" transfer-coding (Section 6.2) is used, the
5066 * transfer-length is defined by the use of this transfer-coding.
5067 * If a Transfer-Encoding header field is present and the "chunked"
5068 * transfer-coding is not present, the transfer-length is defined by
5069 * the sender closing the connection.
5070 *
5071 * 3. If a Content-Length header field is present, its decimal value in
5072 * OCTETs represents both the entity-length and the transfer-length.
5073 * If a message is received with both a Transfer-Encoding header
5074 * field and a Content-Length header field, the latter MUST be ignored.
5075 *
5076 * 4. If the message uses the media type "multipart/byteranges", and
5077 * the transfer-length is not otherwise specified, then this self-
5078 * delimiting media type defines the transfer-length. This media
5079 * type MUST NOT be used unless the sender knows that the recipient
5080 * can parse it; the presence in a request of a Range header with
5081 * multiple byte-range specifiers from a 1.1 client implies that the
5082 * client can parse multipart/byteranges responses.
5083 *
5084 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5085 */
5086
5087 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5088 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5089 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5090 * FIXME: should we parse anyway and return an error on chunked encoding ?
5091 */
5092 if (txn->meth == HTTP_METH_HEAD ||
5093 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5094 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5095 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5096 goto skip_content_length;
5097 }
5098
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5099 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5100 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5101 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5102 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5103 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5104 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5105 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5106 /* bad transfer-encoding (chunked followed by something else) */
5107 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5108 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5109 break;
5110 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5111 }
5112
5113 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5114 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5115 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5116 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5117 signed long long cl;
5118
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5119 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5120 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5121 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5122 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5123
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5124 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5125 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5126 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5127 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5128
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5129 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5130 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5131 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5132 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5133
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5134 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5135 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5136 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5137 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5138
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5139 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5140 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5141 }
5142
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5143 if (s->fe->comp || s->be->comp)
5144 select_compression_response_header(s, rep->buf);
5145
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5146 /* FIXME: we should also implement the multipart/byterange method.
5147 * For now on, we resort to close mode in this case (unknown length).
5148 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5149skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5150
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5151 /* end of job, return OK */
5152 rep->analysers &= ~an_bit;
5153 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5154 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5155 return 1;
5156}
5157
5158/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5159 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5160 * and updates t->rep->analysers. It might make sense to explode it into several
5161 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5162 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5163int 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]5164{
5165 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5166 struct http_msg *msg = &txn->rsp;
5167 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5168 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5169
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5170 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]5171 now_ms, __FUNCTION__,
5172 t,
5173 rep,
5174 rep->rex, rep->wex,
5175 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5176 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5177 rep->analysers);
5178
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5179 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5180 return 0;
5181
5182 rep->analysers &= ~an_bit;
5183 rep->analyse_exp = TICK_ETERNITY;
5184
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5185 /* Now we have to check if we need to modify the Connection header.
5186 * This is more difficult on the response than it is on the request,
5187 * because we can have two different HTTP versions and we don't know
5188 * how the client will interprete a response. For instance, let's say
5189 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5190 * HTTP/1.1 response without any header. Maybe it will bound itself to
5191 * HTTP/1.0 because it only knows about it, and will consider the lack
5192 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5193 * the lack of header as a keep-alive. Thus we will use two flags
5194 * indicating how a request MAY be understood by the client. In case
5195 * of multiple possibilities, we'll fix the header to be explicit. If
5196 * ambiguous cases such as both close and keepalive are seen, then we
5197 * will fall back to explicit close. Note that we won't take risks with
5198 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5199 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5200 */
5201
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5202 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5203 txn->status == 101)) {
5204 /* Either we've established an explicit tunnel, or we're
5205 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5206 * to understand the next protocols. We have to switch to tunnel
5207 * mode, so that we transfer the request and responses then let
5208 * this protocol pass unmodified. When we later implement specific
5209 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5210 * header which contains information about that protocol for
5211 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5212 */
5213 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5214 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5215 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5216 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5217 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5218 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5219
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5220 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5221 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5222 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5223 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5224
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5225 /* now adjust header transformations depending on current state */
5226 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5227 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5228 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5229 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5230 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5231 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5232 else { /* SCL / KAL */
5233 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5234 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5235 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5236 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5237
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5238 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5239 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5240
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5241 /* Some keep-alive responses are converted to Server-close if
5242 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5243 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5244 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5245 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5246 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5247 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5248 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5249 }
5250
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5251 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5252 /*
5253 * 3: we will have to evaluate the filters.
5254 * As opposed to version 1.2, now they will be evaluated in the
5255 * filters order and not in the header order. This means that
5256 * each filter has to be validated among all headers.
5257 *
5258 * Filters are tried with ->be first, then with ->fe if it is
5259 * different from ->be.
5260 */
5261
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5262 cur_proxy = t->be;
5263 while (1) {
5264 struct proxy *rule_set = cur_proxy;
5265
5266 /* try headers filters */
5267 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5268 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5269 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5270 if (objt_server(t->target)) {
5271 objt_server(t->target)->counters.failed_resp++;
5272 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5273 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5274 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5275 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5276 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5277 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5278 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5279 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5280 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5281 if (!(t->flags & SN_ERR_MASK))
5282 t->flags |= SN_ERR_PRXCOND;
5283 if (!(t->flags & SN_FINST_MASK))
5284 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5285 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5286 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5287 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5288
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5289 /* has the response been denied ? */
5290 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5291 if (objt_server(t->target))
5292 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5293
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5294 t->be->be_counters.denied_resp++;
5295 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5296 if (t->listener->counters)
5297 t->listener->counters->denied_resp++;
5298
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5299 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5300 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5301
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5302 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5303 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5304 if (txn->status < 200)
5305 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5306 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5307 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]5308 ret = acl_pass(ret);
5309 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5310 ret = !ret;
5311 if (!ret)
5312 continue;
5313 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5314 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5315 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5316 }
5317
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5318 /* check whether we're already working on the frontend */
5319 if (cur_proxy == t->fe)
5320 break;
5321 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5322 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5323
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5324 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5325 * We may be facing a 100-continue response, in which case this
5326 * is not the right response, and we're waiting for the next one.
5327 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5328 * next one.
5329 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5330 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5331 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5332 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5333 msg->msg_state = HTTP_MSG_RPBEFORE;
5334 txn->status = 0;
5335 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5336 return 1;
5337 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5338 else if (unlikely(txn->status < 200))
5339 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5340
5341 /* we don't have any 1xx status code now */
5342
5343 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5344 * 4: check for server cookie.
5345 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5346 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5347 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5348 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5349
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5350
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5351 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5352 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5353 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5354 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]5355 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5356
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5357 /*
5358 * 6: add server cookie in the response if needed
5359 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5360 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5361 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5362 (!(t->flags & SN_DIRECT) ||
5363 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5364 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5365 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5366 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5367 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5368 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5369 /* the server is known, it's not the one the client requested, or the
5370 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5371 * insert a set-cookie here, except if we want to insert only on POST
5372 * requests and this one isn't. Note that servers which don't have cookies
5373 * (eg: some backup servers) will return a full cookie removal request.
5374 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5375 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5376 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5377 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5378 t->be->cookie_name);
5379 }
5380 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5381 chunk_printf(&trash, "Set-Cookie: %s=%s", t->be->cookie_name, objt_server(t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5382
5383 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5384 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5385 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5386 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5387 trash.len += 5;
5388
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5389 if (t->be->cookie_maxlife) {
5390 /* emit first_date, which is either the original one or
5391 * the current date.
5392 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5393 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5394 s30tob64(txn->cookie_first_date ?
5395 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5396 (date.tv_sec+3) >> 2, trash.str + trash.len);
5397 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5398 }
5399 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5400 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5401 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5402
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5403 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5404 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5405
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5406 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5407 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5408
5409 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5410 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5411
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5412 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5413 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5414
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5415 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5416 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5417 /* the server did not change, only the date was updated */
5418 txn->flags |= TX_SCK_UPDATED;
5419 else
5420 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5421
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5422 /* Here, we will tell an eventual cache on the client side that we don't
5423 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5424 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5425 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5426 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5427 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5428
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5429 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5430
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5431 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5432 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5433 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5434 }
5435 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5436
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5437 /*
5438 * 7: check if result will be cacheable with a cookie.
5439 * We'll block the response if security checks have caught
5440 * nasty things such as a cacheable cookie.
5441 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5442 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5443 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5444 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5445
5446 /* we're in presence of a cacheable response containing
5447 * a set-cookie header. We'll block it as requested by
5448 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5449 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5450 if (objt_server(t->target))
5451 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5452
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5453 t->be->be_counters.denied_resp++;
5454 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5455 if (t->listener->counters)
5456 t->listener->counters->denied_resp++;
5457
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5458 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5459 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5460 send_log(t->be, LOG_ALERT,
5461 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5462 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5463 goto return_srv_prx_502;
5464 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5465
5466 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5467 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5468 * If an "Upgrade" token is found, the header is left untouched in order
5469 * not to have to deal with some client bugs : some of them fail an upgrade
5470 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5471 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5472 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5473 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5474 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5475 unsigned int want_flags = 0;
5476
5477 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5478 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5479 /* we want a keep-alive response here. Keep-alive header
5480 * required if either side is not 1.1.
5481 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5482 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5483 want_flags |= TX_CON_KAL_SET;
5484 }
5485 else {
5486 /* we want a close response here. Close header required if
5487 * the server is 1.1, regardless of the client.
5488 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5489 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5490 want_flags |= TX_CON_CLO_SET;
5491 }
5492
5493 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5494 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5495 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5496
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5497 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5498 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5499 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5500 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5501
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5502 /*************************************************************
5503 * OK, that's finished for the headers. We have done what we *
5504 * could. Let's switch to the DATA state. *
5505 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5506
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5507 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5508
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5509 /* if the user wants to log as soon as possible, without counting
5510 * bytes from the server, then this is the right moment. We have
5511 * to temporarily assign bytes_out to log what we currently have.
5512 */
5513 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5514 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5515 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5516 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5517 t->logs.bytes_out = 0;
5518 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5519
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5520 /* Note: we must not try to cheat by jumping directly to DATA,
5521 * otherwise we would not let the client side wake up.
5522 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5523
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5524 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5525 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5526 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5527}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5528
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5529/* This function is an analyser which forwards response body (including chunk
5530 * sizes if any). It is called as soon as we must forward, even if we forward
5531 * zero byte. The only situation where it must not be called is when we're in
5532 * tunnel mode and we want to forward till the close. It's used both to forward
5533 * remaining data and to resync after end of body. It expects the msg_state to
5534 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5535 * 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]5536 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5537 * bytes of pending data + the headers if not already done (between sol and sov).
5538 * 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]5539 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5540int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5541{
5542 struct http_txn *txn = &s->txn;
5543 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5544 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5545 static struct buffer *tmpbuf = NULL;
5546 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5547 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5548
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5549 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5550 return 0;
5551
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5552 if ((res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5553 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5554 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5555 /* Output closed while we were sending data. We must abort and
5556 * wake the other side up.
5557 */
5558 msg->msg_state = HTTP_MSG_ERROR;
5559 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5560 return 1;
5561 }
5562
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5563 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5564 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5565
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5566 /* this is the first time we need the compression buffer */
5567 if (s->comp_algo != NULL && tmpbuf == NULL) {
5568 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5569 goto aborted_xfer; /* no memory */
5570 }
5571
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5572 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5573 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5574 * rep->buf.p still points to the beginning of the message and msg->sol
5575 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5576 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5577 channel_forward(res, msg->sov);
5578 msg->next = 0;
5579 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5580
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5581 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5582 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5583 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5584 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5585 }
5586
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5587 if (s->comp_algo != NULL) {
5588 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5589 if (ret < 0)
5590 goto missing_data; /* not enough spaces in buffers */
5591 compressing = 1;
5592 }
5593
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5594 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5595 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5596 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5597 if (s->comp_algo == NULL) {
5598 bytes = msg->sov - msg->sol;
5599 if (msg->chunk_len || bytes) {
5600 msg->sol = msg->sov;
5601 msg->next -= bytes; /* will be forwarded */
5602 msg->chunk_len += bytes;
5603 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5604 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5605 }
5606
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5607 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5608 int ret;
5609
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5610 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5611 if (compressing) {
5612 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5613 if (ret < 0)
5614 goto aborted_xfer;
5615 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5616
5617 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5618 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5619
5620 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5621 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5622 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5623 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5624 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5625 if (compressing && consumed_data) {
5626 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5627 compressing = 0;
5628 }
5629 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5630 }
5631 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5632 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5633 * set ->sov and ->next to point to the body and switch to DATA or
5634 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5635 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5636 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5637
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5638 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5639 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5640 else if (ret < 0) {
5641 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5642 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]5643 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5644 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5645 if (compressing) {
5646 if (likely(msg->chunk_len > 0)) {
5647 /* skipping data if we are in compression mode */
5648 b_adv(res->buf, msg->next);
5649 msg->next = 0;
5650 msg->sov = 0;
5651 msg->sol = 0;
5652 } else {
5653 if (consumed_data) {
5654 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5655 compressing = 0;
5656 }
5657 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5658 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5659 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5660 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5661 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5662 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5663 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5664
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5665 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5666 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5667 else if (ret < 0) {
5668 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5669 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5670 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5671 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5672 /* skipping data in buffer for compression */
5673 if (compressing) {
5674 b_adv(res->buf, msg->next);
5675 msg->next = 0;
5676 msg->sov = 0;
5677 msg->sol = 0;
5678 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5679 /* we're in MSG_CHUNK_SIZE now */
5680 }
5681 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5682 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5683
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5684 if (ret == 0)
5685 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5686 else if (ret < 0) {
5687 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5688 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]5689 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5690 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5691 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5692 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5693 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5694 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5695 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5696 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5697 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5698 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5699 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5700 if (http_resync_states(s)) {
5701 http_silent_debug(__LINE__, s);
5702 /* some state changes occurred, maybe the analyser
5703 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5704 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5705 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5706 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5707 /* response errors are most likely due to
5708 * the client aborting the transfer.
5709 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5710 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5711 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5712 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5713 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5714 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5715 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5716 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5717 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5718 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5719 }
5720 }
5721
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5722 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5723 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5724 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5725 compressing = 0;
5726 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5727 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5728 if (res->flags & CF_SHUTR) {
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5729 if (!(s->flags & SN_ERR_MASK))
5730 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5731 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5732 if (objt_server(s->target))
5733 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5734 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5735 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5736
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5737 if (res->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5738 goto aborted_xfer;
5739
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5740 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5741 if (!s->req->analysers)
5742 goto return_bad_res;
5743
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5744 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5745 if (s->comp_algo == NULL) {
5746 bytes = msg->sov - msg->sol;
5747 if (msg->chunk_len || bytes) {
5748 msg->sol = msg->sov;
5749 msg->next -= bytes; /* will be forwarded */
5750 msg->chunk_len += bytes;
5751 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5752 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5753 }
5754
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5755 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5756 * 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]5757 * Similarly, with keep-alive on the client side, we don't want to forward a
5758 * close.
5759 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5760 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5761 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5762 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5763 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5764
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5765 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5766 * 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]5767 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5768 * modes are already handled by the stream sock layer. We must not do
5769 * this in content-length mode because it could present the MSG_MORE
5770 * flag with the last block of forwarded data, which would cause an
5771 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5772 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5773 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5774 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5775
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5776 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5777 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5778 return 0;
5779
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5780 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5781 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5782 if (objt_server(s->target))
5783 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5784
5785 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5786 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5787 /* don't send any error message as we're in the body */
5788 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5789 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5790 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5791 if (objt_server(s->target))
5792 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5793
5794 if (!(s->flags & SN_ERR_MASK))
5795 s->flags |= SN_ERR_PRXCOND;
5796 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5797 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5798 return 0;
5799
5800 aborted_xfer:
5801 txn->rsp.msg_state = HTTP_MSG_ERROR;
5802 /* don't send any error message as we're in the body */
5803 stream_int_retnclose(res->cons, NULL);
5804 res->analysers = 0;
5805 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5806
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5807 s->fe->fe_counters.cli_aborts++;
5808 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5809 if (objt_server(s->target))
5810 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5811
5812 if (!(s->flags & SN_ERR_MASK))
5813 s->flags |= SN_ERR_CLICL;
5814 if (!(s->flags & SN_FINST_MASK))
5815 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5816 return 0;
5817}
5818
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5819/* Iterate the same filter through all request headers.
5820 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5821 * Since it can manage the switch to another backend, it updates the per-proxy
5822 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5823 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5824int 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]5825{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5826 char term;
5827 char *cur_ptr, *cur_end, *cur_next;
5828 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5829 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5830 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5831 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5832
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5833 last_hdr = 0;
5834
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5835 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5836 old_idx = 0;
5837
5838 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5839 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5840 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5841 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5842 (exp->action == ACT_ALLOW ||
5843 exp->action == ACT_DENY ||
5844 exp->action == ACT_TARPIT))
5845 return 0;
5846
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5847 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5848 if (!cur_idx)
5849 break;
5850
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5851 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5852 cur_ptr = cur_next;
5853 cur_end = cur_ptr + cur_hdr->len;
5854 cur_next = cur_end + cur_hdr->cr + 1;
5855
5856 /* Now we have one header between cur_ptr and cur_end,
5857 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5858 */
5859
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5860 /* The annoying part is that pattern matching needs
5861 * that we modify the contents to null-terminate all
5862 * strings before testing them.
5863 */
5864
5865 term = *cur_end;
5866 *cur_end = '\0';
5867
5868 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5869 switch (exp->action) {
5870 case ACT_SETBE:
5871 /* It is not possible to jump a second time.
5872 * FIXME: should we return an HTTP/500 here so that
5873 * the admin knows there's a problem ?
5874 */
5875 if (t->be != t->fe)
5876 break;
5877
5878 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5879 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5880 last_hdr = 1;
5881 break;
5882
5883 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5884 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5885 last_hdr = 1;
5886 break;
5887
5888 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5889 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5890 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5891
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5892 t->fe->fe_counters.denied_req++;
5893 if (t->fe != t->be)
5894 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5895 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5896 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5897
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5898 break;
5899
5900 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5901 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5902 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5903
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5904 t->fe->fe_counters.denied_req++;
5905 if (t->fe != t->be)
5906 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5907 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5908 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5909
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5910 break;
5911
5912 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5913 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
5914 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5915 /* FIXME: if the user adds a newline in the replacement, the
5916 * index will not be recalculated for now, and the new line
5917 * will not be counted as a new header.
5918 */
5919
5920 cur_end += delta;
5921 cur_next += delta;
5922 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5923 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5924 break;
5925
5926 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5927 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5928 cur_next += delta;
5929
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5930 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5931 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5932 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5933 cur_hdr->len = 0;
5934 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5935 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5936 break;
5937
5938 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5939 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5940 if (cur_end)
5941 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5942
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5943 /* keep the link from this header to next one in case of later
5944 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5945 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5946 old_idx = cur_idx;
5947 }
5948 return 0;
5949}
5950
5951
5952/* Apply the filter to the request line.
5953 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5954 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5955 * Since it can manage the switch to another backend, it updates the per-proxy
5956 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5957 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5958int 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]5959{
5960 char term;
5961 char *cur_ptr, *cur_end;
5962 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5963 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5964 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5965
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5966 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5967 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5968 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5969 (exp->action == ACT_ALLOW ||
5970 exp->action == ACT_DENY ||
5971 exp->action == ACT_TARPIT))
5972 return 0;
5973 else if (exp->action == ACT_REMOVE)
5974 return 0;
5975
5976 done = 0;
5977
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5978 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5979 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5980
5981 /* Now we have the request line between cur_ptr and cur_end */
5982
5983 /* The annoying part is that pattern matching needs
5984 * that we modify the contents to null-terminate all
5985 * strings before testing them.
5986 */
5987
5988 term = *cur_end;
5989 *cur_end = '\0';
5990
5991 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5992 switch (exp->action) {
5993 case ACT_SETBE:
5994 /* It is not possible to jump a second time.
5995 * FIXME: should we return an HTTP/500 here so that
5996 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5997 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5998 if (t->be != t->fe)
5999 break;
6000
6001 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6002 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6003 done = 1;
6004 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6005
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6006 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6007 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6008 done = 1;
6009 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6010
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6011 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6012 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6013
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6014 t->fe->fe_counters.denied_req++;
6015 if (t->fe != t->be)
6016 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6017 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6018 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6019
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6020 done = 1;
6021 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6022
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6023 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6024 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6025
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6026 t->fe->fe_counters.denied_req++;
6027 if (t->fe != t->be)
6028 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6029 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6030 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6031
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6032 done = 1;
6033 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6034
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6035 case ACT_REPLACE:
6036 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6037 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6038 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6039 /* FIXME: if the user adds a newline in the replacement, the
6040 * index will not be recalculated for now, and the new line
6041 * will not be counted as a new header.
6042 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6043
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6044 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6045 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6046 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6047 HTTP_MSG_RQMETH,
6048 cur_ptr, cur_end + 1,
6049 NULL, NULL);
6050 if (unlikely(!cur_end))
6051 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6052
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6053 /* we have a full request and we know that we have either a CR
6054 * or an LF at <ptr>.
6055 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6056 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6057 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]6058 /* there is no point trying this regex on headers */
6059 return 1;
6060 }
6061 }
6062 *cur_end = term; /* restore the string terminator */
6063 return done;
6064}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6065
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6066
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6067
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6068/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6069 * 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]6070 * 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]6071 * unparsable request. Since it can manage the switch to another backend, it
6072 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6073 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6074int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6075{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6076 struct http_txn *txn = &s->txn;
6077 struct hdr_exp *exp;
6078
6079 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6080 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6081
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6082 /*
6083 * The interleaving of transformations and verdicts
6084 * makes it difficult to decide to continue or stop
6085 * the evaluation.
6086 */
6087
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6088 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6089 break;
6090
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6091 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6092 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6093 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6094 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6095
6096 /* if this filter had a condition, evaluate it now and skip to
6097 * next filter if the condition does not match.
6098 */
6099 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6100 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]6101 ret = acl_pass(ret);
6102 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6103 ret = !ret;
6104
6105 if (!ret)
6106 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6107 }
6108
6109 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6110 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6111 if (unlikely(ret < 0))
6112 return -1;
6113
6114 if (likely(ret == 0)) {
6115 /* The filter did not match the request, it can be
6116 * iterated through all headers.
6117 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6118 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6119 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6120 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6121 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6122}
6123
6124
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6125
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6126/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6127 * Try to retrieve the server associated to the appsession.
6128 * If the server is found, it's assigned to the session.
6129 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6130void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6131 struct http_txn *txn = &t->txn;
6132 appsess *asession = NULL;
6133 char *sessid_temp = NULL;
6134
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6135 if (len > t->be->appsession_len) {
6136 len = t->be->appsession_len;
6137 }
6138
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6139 if (t->be->options2 & PR_O2_AS_REQL) {
6140 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6141 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6142 /* 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]6143 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6144 }
6145
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6146 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6147 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6148 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6149 return;
6150 }
6151
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6152 memcpy(txn->sessid, buf, len);
6153 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6154 }
6155
6156 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6157 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6158 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6159 return;
6160 }
6161
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6162 memcpy(sessid_temp, buf, len);
6163 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6164
6165 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6166 /* free previously allocated memory */
6167 pool_free2(apools.sessid, sessid_temp);
6168
6169 if (asession != NULL) {
6170 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6171 if (!(t->be->options2 & PR_O2_AS_REQL))
6172 asession->request_count++;
6173
6174 if (asession->serverid != NULL) {
6175 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6176
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6177 while (srv) {
6178 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6179 if ((srv->state & SRV_RUNNING) ||
6180 (t->be->options & PR_O_PERSIST) ||
6181 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6182 /* we found the server and it's usable */
6183 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6184 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6185 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6186 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6187
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6188 break;
6189 } else {
6190 txn->flags &= ~TX_CK_MASK;
6191 txn->flags |= TX_CK_DOWN;
6192 }
6193 }
6194 srv = srv->next;
6195 }
6196 }
6197 }
6198}
6199
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6200/* Find the end of a cookie value contained between <s> and <e>. It works the
6201 * same way as with headers above except that the semi-colon also ends a token.
6202 * See RFC2965 for more information. Note that it requires a valid header to
6203 * return a valid result.
6204 */
6205char *find_cookie_value_end(char *s, const char *e)
6206{
6207 int quoted, qdpair;
6208
6209 quoted = qdpair = 0;
6210 for (; s < e; s++) {
6211 if (qdpair) qdpair = 0;
6212 else if (quoted) {
6213 if (*s == '\\') qdpair = 1;
6214 else if (*s == '"') quoted = 0;
6215 }
6216 else if (*s == '"') quoted = 1;
6217 else if (*s == ',' || *s == ';') return s;
6218 }
6219 return s;
6220}
6221
6222/* Delete a value in a header between delimiters <from> and <next> in buffer
6223 * <buf>. The number of characters displaced is returned, and the pointer to
6224 * the first delimiter is updated if required. The function tries as much as
6225 * possible to respect the following principles :
6226 * - replace <from> delimiter by the <next> one unless <from> points to a
6227 * colon, in which case <next> is simply removed
6228 * - set exactly one space character after the new first delimiter, unless
6229 * there are not enough characters in the block being moved to do so.
6230 * - remove unneeded spaces before the previous delimiter and after the new
6231 * one.
6232 *
6233 * It is the caller's responsibility to ensure that :
6234 * - <from> points to a valid delimiter or the colon ;
6235 * - <next> points to a valid delimiter or the final CR/LF ;
6236 * - there are non-space chars before <from> ;
6237 * - there is a CR/LF at or after <next>.
6238 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6239int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6240{
6241 char *prev = *from;
6242
6243 if (*prev == ':') {
6244 /* We're removing the first value, preserve the colon and add a
6245 * space if possible.
6246 */
6247 if (!http_is_crlf[(unsigned char)*next])
6248 next++;
6249 prev++;
6250 if (prev < next)
6251 *prev++ = ' ';
6252
6253 while (http_is_spht[(unsigned char)*next])
6254 next++;
6255 } else {
6256 /* Remove useless spaces before the old delimiter. */
6257 while (http_is_spht[(unsigned char)*(prev-1)])
6258 prev--;
6259 *from = prev;
6260
6261 /* copy the delimiter and if possible a space if we're
6262 * not at the end of the line.
6263 */
6264 if (!http_is_crlf[(unsigned char)*next]) {
6265 *prev++ = *next++;
6266 if (prev + 1 < next)
6267 *prev++ = ' ';
6268 while (http_is_spht[(unsigned char)*next])
6269 next++;
6270 }
6271 }
6272 return buffer_replace2(buf, prev, next, NULL, 0);
6273}
6274
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6275/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6276 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6277 * desirable to call it only when needed. This code is quite complex because
6278 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6279 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6280 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6281void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6282{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6283 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6284 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6285 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6286 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6287 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6288
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6289 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6290 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6291 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6292
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6293 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6294 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6295 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6296
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6297 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6298 hdr_beg = hdr_next;
6299 hdr_end = hdr_beg + cur_hdr->len;
6300 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6301
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6302 /* We have one full header between hdr_beg and hdr_end, and the
6303 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6304 * "Cookie:" headers.
6305 */
6306
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6307 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6308 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6309 old_idx = cur_idx;
6310 continue;
6311 }
6312
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6313 del_from = NULL; /* nothing to be deleted */
6314 preserve_hdr = 0; /* assume we may kill the whole header */
6315
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6316 /* Now look for cookies. Conforming to RFC2109, we have to support
6317 * attributes whose name begin with a '$', and associate them with
6318 * the right cookie, if we want to delete this cookie.
6319 * So there are 3 cases for each cookie read :
6320 * 1) it's a special attribute, beginning with a '$' : ignore it.
6321 * 2) it's a server id cookie that we *MAY* want to delete : save
6322 * some pointers on it (last semi-colon, beginning of cookie...)
6323 * 3) it's an application cookie : we *MAY* have to delete a previous
6324 * "special" cookie.
6325 * At the end of loop, if a "special" cookie remains, we may have to
6326 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6327 * *MUST* delete it.
6328 *
6329 * Note: RFC2965 is unclear about the processing of spaces around
6330 * the equal sign in the ATTR=VALUE form. A careful inspection of
6331 * the RFC explicitly allows spaces before it, and not within the
6332 * tokens (attrs or values). An inspection of RFC2109 allows that
6333 * too but section 10.1.3 lets one think that spaces may be allowed
6334 * after the equal sign too, resulting in some (rare) buggy
6335 * implementations trying to do that. So let's do what servers do.
6336 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6337 * allowed quoted strings in values, with any possible character
6338 * after a backslash, including control chars and delimitors, which
6339 * causes parsing to become ambiguous. Browsers also allow spaces
6340 * within values even without quotes.
6341 *
6342 * We have to keep multiple pointers in order to support cookie
6343 * removal at the beginning, middle or end of header without
6344 * corrupting the header. All of these headers are valid :
6345 *
6346 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6347 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6348 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6349 * | | | | | | | | |
6350 * | | | | | | | | hdr_end <--+
6351 * | | | | | | | +--> next
6352 * | | | | | | +----> val_end
6353 * | | | | | +-----------> val_beg
6354 * | | | | +--------------> equal
6355 * | | | +----------------> att_end
6356 * | | +---------------------> att_beg
6357 * | +--------------------------> prev
6358 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6359 */
6360
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6361 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6362 /* Iterate through all cookies on this line */
6363
6364 /* find att_beg */
6365 att_beg = prev + 1;
6366 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6367 att_beg++;
6368
6369 /* find att_end : this is the first character after the last non
6370 * space before the equal. It may be equal to hdr_end.
6371 */
6372 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6373
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6374 while (equal < hdr_end) {
6375 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6376 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6377 if (http_is_spht[(unsigned char)*equal++])
6378 continue;
6379 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6380 }
6381
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6382 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6383 * is between <att_beg> and <equal>, both may be identical.
6384 */
6385
6386 /* look for end of cookie if there is an equal sign */
6387 if (equal < hdr_end && *equal == '=') {
6388 /* look for the beginning of the value */
6389 val_beg = equal + 1;
6390 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6391 val_beg++;
6392
6393 /* find the end of the value, respecting quotes */
6394 next = find_cookie_value_end(val_beg, hdr_end);
6395
6396 /* make val_end point to the first white space or delimitor after the value */
6397 val_end = next;
6398 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6399 val_end--;
6400 } else {
6401 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6402 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6403
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6404 /* We have nothing to do with attributes beginning with '$'. However,
6405 * they will automatically be removed if a header before them is removed,
6406 * since they're supposed to be linked together.
6407 */
6408 if (*att_beg == '$')
6409 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6410
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6411 /* Ignore cookies with no equal sign */
6412 if (equal == next) {
6413 /* This is not our cookie, so we must preserve it. But if we already
6414 * scheduled another cookie for removal, we cannot remove the
6415 * complete header, but we can remove the previous block itself.
6416 */
6417 preserve_hdr = 1;
6418 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6419 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6420 val_end += delta;
6421 next += delta;
6422 hdr_end += delta;
6423 hdr_next += delta;
6424 cur_hdr->len += delta;
6425 http_msg_move_end(&txn->req, delta);
6426 prev = del_from;
6427 del_from = NULL;
6428 }
6429 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6430 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6431
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6432 /* if there are spaces around the equal sign, we need to
6433 * strip them otherwise we'll get trouble for cookie captures,
6434 * or even for rewrites. Since this happens extremely rarely,
6435 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6436 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6437 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6438 int stripped_before = 0;
6439 int stripped_after = 0;
6440
6441 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6442 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6443 equal += stripped_before;
6444 val_beg += stripped_before;
6445 }
6446
6447 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6448 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6449 val_beg += stripped_after;
6450 stripped_before += stripped_after;
6451 }
6452
6453 val_end += stripped_before;
6454 next += stripped_before;
6455 hdr_end += stripped_before;
6456 hdr_next += stripped_before;
6457 cur_hdr->len += stripped_before;
6458 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6459 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6460 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6461
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6462 /* First, let's see if we want to capture this cookie. We check
6463 * that we don't already have a client side cookie, because we
6464 * can only capture one. Also as an optimisation, we ignore
6465 * cookies shorter than the declared name.
6466 */
6467 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6468 (val_end - att_beg >= t->fe->capture_namelen) &&
6469 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6470 int log_len = val_end - att_beg;
6471
6472 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6473 Alert("HTTP logging : out of memory.\n");
6474 } else {
6475 if (log_len > t->fe->capture_len)
6476 log_len = t->fe->capture_len;
6477 memcpy(txn->cli_cookie, att_beg, log_len);
6478 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6479 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6480 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6481
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6482 /* Persistence cookies in passive, rewrite or insert mode have the
6483 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6484 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6485 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6486 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6487 * For cookies in prefix mode, the form is :
6488 *
6489 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6490 */
6491 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6492 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6493 struct server *srv = t->be->srv;
6494 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6495
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6496 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6497 * have the server ID between val_beg and delim, and the original cookie between
6498 * delim+1 and val_end. Otherwise, delim==val_end :
6499 *
6500 * Cookie: NAME=SRV; # in all but prefix modes
6501 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6502 * | || || | |+-> next
6503 * | || || | +--> val_end
6504 * | || || +---------> delim
6505 * | || |+------------> val_beg
6506 * | || +-------------> att_end = equal
6507 * | |+-----------------> att_beg
6508 * | +------------------> prev
6509 * +-------------------------> hdr_beg
6510 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6511
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6512 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6513 for (delim = val_beg; delim < val_end; delim++)
6514 if (*delim == COOKIE_DELIM)
6515 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6516 } else {
6517 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6518 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6519 /* Now check if the cookie contains a date field, which would
6520 * appear after a vertical bar ('|') just after the server name
6521 * and before the delimiter.
6522 */
6523 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6524 if (vbar1) {
6525 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6526 * right is the last seen date. It is a base64 encoded
6527 * 30-bit value representing the UNIX date since the
6528 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6529 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6530 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6531 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6532 if (val_end - vbar1 >= 5) {
6533 val = b64tos30(vbar1);
6534 if (val > 0)
6535 txn->cookie_last_date = val << 2;
6536 }
6537 /* look for a second vertical bar */
6538 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6539 if (vbar1 && (val_end - vbar1 > 5)) {
6540 val = b64tos30(vbar1 + 1);
6541 if (val > 0)
6542 txn->cookie_first_date = val << 2;
6543 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6544 }
6545 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6546
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6547 /* if the cookie has an expiration date and the proxy wants to check
6548 * it, then we do that now. We first check if the cookie is too old,
6549 * then only if it has expired. We detect strict overflow because the
6550 * time resolution here is not great (4 seconds). Cookies with dates
6551 * in the future are ignored if their offset is beyond one day. This
6552 * allows an admin to fix timezone issues without expiring everyone
6553 * and at the same time avoids keeping unwanted side effects for too
6554 * long.
6555 */
6556 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6557 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6558 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6559 txn->flags &= ~TX_CK_MASK;
6560 txn->flags |= TX_CK_OLD;
6561 delim = val_beg; // let's pretend we have not found the cookie
6562 txn->cookie_first_date = 0;
6563 txn->cookie_last_date = 0;
6564 }
6565 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6566 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6567 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6568 txn->flags &= ~TX_CK_MASK;
6569 txn->flags |= TX_CK_EXPIRED;
6570 delim = val_beg; // let's pretend we have not found the cookie
6571 txn->cookie_first_date = 0;
6572 txn->cookie_last_date = 0;
6573 }
6574
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6575 /* Here, we'll look for the first running server which supports the cookie.
6576 * This allows to share a same cookie between several servers, for example
6577 * to dedicate backup servers to specific servers only.
6578 * However, to prevent clients from sticking to cookie-less backup server
6579 * when they have incidentely learned an empty cookie, we simply ignore
6580 * empty cookies and mark them as invalid.
6581 * The same behaviour is applied when persistence must be ignored.
6582 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6583 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6584 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6585
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6586 while (srv) {
6587 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6588 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6589 if ((srv->state & SRV_RUNNING) ||
6590 (t->be->options & PR_O_PERSIST) ||
6591 (t->flags & SN_FORCE_PRST)) {
6592 /* we found the server and we can use it */
6593 txn->flags &= ~TX_CK_MASK;
6594 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6595 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6596 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6597 break;
6598 } else {
6599 /* we found a server, but it's down,
6600 * mark it as such and go on in case
6601 * another one is available.
6602 */
6603 txn->flags &= ~TX_CK_MASK;
6604 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6605 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6606 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6607 srv = srv->next;
6608 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6609
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6610 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6611 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6612 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6613 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6614 txn->flags |= TX_CK_UNUSED;
6615 else
6616 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6617 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6618
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6619 /* depending on the cookie mode, we may have to either :
6620 * - delete the complete cookie if we're in insert+indirect mode, so that
6621 * the server never sees it ;
6622 * - remove the server id from the cookie value, and tag the cookie as an
6623 * application cookie so that it does not get accidentely removed later,
6624 * if we're in cookie prefix mode
6625 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6626 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6627 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6628
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6629 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6630 val_end += delta;
6631 next += delta;
6632 hdr_end += delta;
6633 hdr_next += delta;
6634 cur_hdr->len += delta;
6635 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6636
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6637 del_from = NULL;
6638 preserve_hdr = 1; /* we want to keep this cookie */
6639 }
6640 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6641 (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]6642 del_from = prev;
6643 }
6644 } else {
6645 /* This is not our cookie, so we must preserve it. But if we already
6646 * scheduled another cookie for removal, we cannot remove the
6647 * complete header, but we can remove the previous block itself.
6648 */
6649 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6650
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6651 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6652 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6653 if (att_beg >= del_from)
6654 att_beg += delta;
6655 if (att_end >= del_from)
6656 att_end += delta;
6657 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6658 val_end += delta;
6659 next += delta;
6660 hdr_end += delta;
6661 hdr_next += delta;
6662 cur_hdr->len += delta;
6663 http_msg_move_end(&txn->req, delta);
6664 prev = del_from;
6665 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6666 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6667 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6668
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6669 /* Look for the appsession cookie unless persistence must be ignored */
6670 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6671 int cmp_len, value_len;
6672 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6673
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6674 if (t->be->options2 & PR_O2_AS_PFX) {
6675 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6676 value_begin = att_beg + t->be->appsession_name_len;
6677 value_len = val_end - att_beg - t->be->appsession_name_len;
6678 } else {
6679 cmp_len = att_end - att_beg;
6680 value_begin = val_beg;
6681 value_len = val_end - val_beg;
6682 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6683
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6684 /* let's see if the cookie is our appcookie */
6685 if (cmp_len == t->be->appsession_name_len &&
6686 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6687 manage_client_side_appsession(t, value_begin, value_len);
6688 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6689 }
6690
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6691 /* continue with next cookie on this header line */
6692 att_beg = next;
6693 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6694
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6695 /* There are no more cookies on this line.
6696 * We may still have one (or several) marked for deletion at the
6697 * end of the line. We must do this now in two ways :
6698 * - if some cookies must be preserved, we only delete from the
6699 * mark to the end of line ;
6700 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6701 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6702 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6703 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6704 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6705 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6706 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6707 cur_hdr->len += delta;
6708 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6709 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6710
6711 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6712 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6713 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6714 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6715 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6716 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6717 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6718 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6719 }
6720
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6721 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6722 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6723 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6724}
6725
6726
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6727/* Iterate the same filter through all response headers contained in <rtr>.
6728 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6729 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6730int 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]6731{
6732 char term;
6733 char *cur_ptr, *cur_end, *cur_next;
6734 int cur_idx, old_idx, last_hdr;
6735 struct http_txn *txn = &t->txn;
6736 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6737 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6738
6739 last_hdr = 0;
6740
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6741 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6742 old_idx = 0;
6743
6744 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6745 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6746 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6747 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6748 (exp->action == ACT_ALLOW ||
6749 exp->action == ACT_DENY))
6750 return 0;
6751
6752 cur_idx = txn->hdr_idx.v[old_idx].next;
6753 if (!cur_idx)
6754 break;
6755
6756 cur_hdr = &txn->hdr_idx.v[cur_idx];
6757 cur_ptr = cur_next;
6758 cur_end = cur_ptr + cur_hdr->len;
6759 cur_next = cur_end + cur_hdr->cr + 1;
6760
6761 /* Now we have one header between cur_ptr and cur_end,
6762 * and the next header starts at cur_next.
6763 */
6764
6765 /* The annoying part is that pattern matching needs
6766 * that we modify the contents to null-terminate all
6767 * strings before testing them.
6768 */
6769
6770 term = *cur_end;
6771 *cur_end = '\0';
6772
6773 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6774 switch (exp->action) {
6775 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6776 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6777 last_hdr = 1;
6778 break;
6779
6780 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6781 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6782 last_hdr = 1;
6783 break;
6784
6785 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6786 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6787 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6788 /* FIXME: if the user adds a newline in the replacement, the
6789 * index will not be recalculated for now, and the new line
6790 * will not be counted as a new header.
6791 */
6792
6793 cur_end += delta;
6794 cur_next += delta;
6795 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6796 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6797 break;
6798
6799 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6800 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6801 cur_next += delta;
6802
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6803 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6804 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6805 txn->hdr_idx.used--;
6806 cur_hdr->len = 0;
6807 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6808 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6809 break;
6810
6811 }
6812 }
6813 if (cur_end)
6814 *cur_end = term; /* restore the string terminator */
6815
6816 /* keep the link from this header to next one in case of later
6817 * removal of next header.
6818 */
6819 old_idx = cur_idx;
6820 }
6821 return 0;
6822}
6823
6824
6825/* Apply the filter to the status line in the response buffer <rtr>.
6826 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6827 * or -1 if a replacement resulted in an invalid status line.
6828 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6829int 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]6830{
6831 char term;
6832 char *cur_ptr, *cur_end;
6833 int done;
6834 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6835 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6836
6837
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6838 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6839 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6840 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6841 (exp->action == ACT_ALLOW ||
6842 exp->action == ACT_DENY))
6843 return 0;
6844 else if (exp->action == ACT_REMOVE)
6845 return 0;
6846
6847 done = 0;
6848
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6849 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6850 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6851
6852 /* Now we have the status line between cur_ptr and cur_end */
6853
6854 /* The annoying part is that pattern matching needs
6855 * that we modify the contents to null-terminate all
6856 * strings before testing them.
6857 */
6858
6859 term = *cur_end;
6860 *cur_end = '\0';
6861
6862 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6863 switch (exp->action) {
6864 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6865 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6866 done = 1;
6867 break;
6868
6869 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6870 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6871 done = 1;
6872 break;
6873
6874 case ACT_REPLACE:
6875 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6876 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6877 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6878 /* FIXME: if the user adds a newline in the replacement, the
6879 * index will not be recalculated for now, and the new line
6880 * will not be counted as a new header.
6881 */
6882
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6883 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6884 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6885 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6886 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6887 cur_ptr, cur_end + 1,
6888 NULL, NULL);
6889 if (unlikely(!cur_end))
6890 return -1;
6891
6892 /* we have a full respnse and we know that we have either a CR
6893 * or an LF at <ptr>.
6894 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6895 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]6896 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]6897 /* there is no point trying this regex on headers */
6898 return 1;
6899 }
6900 }
6901 *cur_end = term; /* restore the string terminator */
6902 return done;
6903}
6904
6905
6906
6907/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6908 * 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]6909 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6910 * unparsable response.
6911 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6912int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6913{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6914 struct http_txn *txn = &s->txn;
6915 struct hdr_exp *exp;
6916
6917 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6918 int ret;
6919
6920 /*
6921 * The interleaving of transformations and verdicts
6922 * makes it difficult to decide to continue or stop
6923 * the evaluation.
6924 */
6925
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6926 if (txn->flags & TX_SVDENY)
6927 break;
6928
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6929 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6930 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6931 exp->action == ACT_PASS)) {
6932 exp = exp->next;
6933 continue;
6934 }
6935
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6936 /* if this filter had a condition, evaluate it now and skip to
6937 * next filter if the condition does not match.
6938 */
6939 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6940 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]6941 ret = acl_pass(ret);
6942 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6943 ret = !ret;
6944 if (!ret)
6945 continue;
6946 }
6947
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6948 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6949 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6950 if (unlikely(ret < 0))
6951 return -1;
6952
6953 if (likely(ret == 0)) {
6954 /* The filter did not match the response, it can be
6955 * iterated through all headers.
6956 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6957 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6958 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6959 }
6960 return 0;
6961}
6962
6963
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6964/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6965 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6966 * desirable to call it only when needed. This function is also used when we
6967 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6968 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6969void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6970{
6971 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6972 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6973 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6974 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6975 char *hdr_beg, *hdr_end, *hdr_next;
6976 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6977
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6978 /* Iterate through the headers.
6979 * we start with the start line.
6980 */
6981 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6982 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6983
6984 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6985 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6986 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6987
6988 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6989 hdr_beg = hdr_next;
6990 hdr_end = hdr_beg + cur_hdr->len;
6991 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6992
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6993 /* We have one full header between hdr_beg and hdr_end, and the
6994 * next header starts at hdr_next. We're only interested in
6995 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6996 */
6997
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6998 is_cookie2 = 0;
6999 prev = hdr_beg + 10;
7000 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7001 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7002 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7003 if (!val) {
7004 old_idx = cur_idx;
7005 continue;
7006 }
7007 is_cookie2 = 1;
7008 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7009 }
7010
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7011 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7012 * <prev> points to the colon.
7013 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7014 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7015
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7016 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7017 * check-cache is enabled) and we are not interested in checking
7018 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7019 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7020 if (t->be->cookie_name == NULL &&
7021 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7022 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7023 return;
7024
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7025 /* OK so now we know we have to process this response cookie.
7026 * The format of the Set-Cookie header is slightly different
7027 * from the format of the Cookie header in that it does not
7028 * support the comma as a cookie delimiter (thus the header
7029 * cannot be folded) because the Expires attribute described in
7030 * the original Netscape's spec may contain an unquoted date
7031 * with a comma inside. We have to live with this because
7032 * many browsers don't support Max-Age and some browsers don't
7033 * support quoted strings. However the Set-Cookie2 header is
7034 * clean.
7035 *
7036 * We have to keep multiple pointers in order to support cookie
7037 * removal at the beginning, middle or end of header without
7038 * corrupting the header (in case of set-cookie2). A special
7039 * pointer, <scav> points to the beginning of the set-cookie-av
7040 * fields after the first semi-colon. The <next> pointer points
7041 * either to the end of line (set-cookie) or next unquoted comma
7042 * (set-cookie2). All of these headers are valid :
7043 *
7044 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7045 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7046 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7047 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7048 * | | | | | | | | | |
7049 * | | | | | | | | +-> next hdr_end <--+
7050 * | | | | | | | +------------> scav
7051 * | | | | | | +--------------> val_end
7052 * | | | | | +--------------------> val_beg
7053 * | | | | +----------------------> equal
7054 * | | | +------------------------> att_end
7055 * | | +----------------------------> att_beg
7056 * | +------------------------------> prev
7057 * +-----------------------------------------> hdr_beg
7058 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7059
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7060 for (; prev < hdr_end; prev = next) {
7061 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7062
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7063 /* find att_beg */
7064 att_beg = prev + 1;
7065 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7066 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7067
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7068 /* find att_end : this is the first character after the last non
7069 * space before the equal. It may be equal to hdr_end.
7070 */
7071 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7072
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7073 while (equal < hdr_end) {
7074 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7075 break;
7076 if (http_is_spht[(unsigned char)*equal++])
7077 continue;
7078 att_end = equal;
7079 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7080
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7081 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7082 * is between <att_beg> and <equal>, both may be identical.
7083 */
7084
7085 /* look for end of cookie if there is an equal sign */
7086 if (equal < hdr_end && *equal == '=') {
7087 /* look for the beginning of the value */
7088 val_beg = equal + 1;
7089 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7090 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7091
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7092 /* find the end of the value, respecting quotes */
7093 next = find_cookie_value_end(val_beg, hdr_end);
7094
7095 /* make val_end point to the first white space or delimitor after the value */
7096 val_end = next;
7097 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7098 val_end--;
7099 } else {
7100 /* <equal> points to next comma, semi-colon or EOL */
7101 val_beg = val_end = next = equal;
7102 }
7103
7104 if (next < hdr_end) {
7105 /* Set-Cookie2 supports multiple cookies, and <next> points to
7106 * a colon or semi-colon before the end. So skip all attr-value
7107 * pairs and look for the next comma. For Set-Cookie, since
7108 * commas are permitted in values, skip to the end.
7109 */
7110 if (is_cookie2)
7111 next = find_hdr_value_end(next, hdr_end);
7112 else
7113 next = hdr_end;
7114 }
7115
7116 /* Now everything is as on the diagram above */
7117
7118 /* Ignore cookies with no equal sign */
7119 if (equal == val_end)
7120 continue;
7121
7122 /* If there are spaces around the equal sign, we need to
7123 * strip them otherwise we'll get trouble for cookie captures,
7124 * or even for rewrites. Since this happens extremely rarely,
7125 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7126 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7127 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7128 int stripped_before = 0;
7129 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7130
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7131 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7132 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7133 equal += stripped_before;
7134 val_beg += stripped_before;
7135 }
7136
7137 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7138 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7139 val_beg += stripped_after;
7140 stripped_before += stripped_after;
7141 }
7142
7143 val_end += stripped_before;
7144 next += stripped_before;
7145 hdr_end += stripped_before;
7146 hdr_next += stripped_before;
7147 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7148 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7149 }
7150
7151 /* First, let's see if we want to capture this cookie. We check
7152 * that we don't already have a server side cookie, because we
7153 * can only capture one. Also as an optimisation, we ignore
7154 * cookies shorter than the declared name.
7155 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7156 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7157 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7158 (val_end - att_beg >= t->fe->capture_namelen) &&
7159 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7160 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7161 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7162 Alert("HTTP logging : out of memory.\n");
7163 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7164 else {
7165 if (log_len > t->fe->capture_len)
7166 log_len = t->fe->capture_len;
7167 memcpy(txn->srv_cookie, att_beg, log_len);
7168 txn->srv_cookie[log_len] = 0;
7169 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7170 }
7171
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7172 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7173 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7174 if (!(t->flags & SN_IGNORE_PRST) &&
7175 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7176 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7177 /* assume passive cookie by default */
7178 txn->flags &= ~TX_SCK_MASK;
7179 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7180
7181 /* If the cookie is in insert mode on a known server, we'll delete
7182 * this occurrence because we'll insert another one later.
7183 * 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]7184 * a direct access.
7185 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7186 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7187 /* The "preserve" flag was set, we don't want to touch the
7188 * server's cookie.
7189 */
7190 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7191 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7192 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7193 /* this cookie must be deleted */
7194 if (*prev == ':' && next == hdr_end) {
7195 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7196 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7197 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7198 txn->hdr_idx.used--;
7199 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7200 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7201 hdr_next += delta;
7202 http_msg_move_end(&txn->rsp, delta);
7203 /* note: while both invalid now, <next> and <hdr_end>
7204 * are still equal, so the for() will stop as expected.
7205 */
7206 } else {
7207 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7208 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7209 next = prev;
7210 hdr_end += delta;
7211 hdr_next += delta;
7212 cur_hdr->len += delta;
7213 http_msg_move_end(&txn->rsp, delta);
7214 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7215 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7216 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7217 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7218 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7219 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7220 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7221 * with this server since we know it.
7222 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7223 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7224 next += delta;
7225 hdr_end += delta;
7226 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7227 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7228 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7229
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7230 txn->flags &= ~TX_SCK_MASK;
7231 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7232 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7233 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7234 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7235 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7236 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7237 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7238 next += delta;
7239 hdr_end += delta;
7240 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7241 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7242 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7243
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7244 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7245 txn->flags &= ~TX_SCK_MASK;
7246 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7247 }
7248 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7249 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7250 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7251 int cmp_len, value_len;
7252 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7253
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7254 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7255 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7256 value_begin = att_beg + t->be->appsession_name_len;
7257 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]7258 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7259 cmp_len = att_end - att_beg;
7260 value_begin = val_beg;
7261 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7262 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7263
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7264 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7265 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7266 /* free a possibly previously allocated memory */
7267 pool_free2(apools.sessid, txn->sessid);
7268
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7269 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7270 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7271 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7272 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7273 return;
7274 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7275 memcpy(txn->sessid, value_begin, value_len);
7276 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7277 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7278 }
7279 /* that's done for this cookie, check the next one on the same
7280 * line when next != hdr_end (only if is_cookie2).
7281 */
7282 }
7283 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7284 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7285 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7286
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7287 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7288 appsess *asession = NULL;
7289 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7290 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7291 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7292 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7293 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7294 Alert("Not enough Memory process_srv():asession:calloc().\n");
7295 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7296 return;
7297 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7298 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7299
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7300 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7301 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7302 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]7303 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7304 return;
7305 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7306 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7307 asession->sessid[t->be->appsession_len] = 0;
7308
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7309 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7310 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7311 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7312 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]7313 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7314 return;
7315 }
7316 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7317 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7318
7319 asession->request_count = 0;
7320 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7321 }
7322
7323 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7324 asession->request_count++;
7325 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7326}
7327
7328
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7329/*
7330 * Check if response is cacheable or not. Updates t->flags.
7331 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7332void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7333{
7334 struct http_txn *txn = &t->txn;
7335 char *p1, *p2;
7336
7337 char *cur_ptr, *cur_end, *cur_next;
7338 int cur_idx;
7339
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7340 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7341 return;
7342
7343 /* Iterate through the headers.
7344 * we start with the start line.
7345 */
7346 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7347 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7348
7349 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7350 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7351 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7352
7353 cur_hdr = &txn->hdr_idx.v[cur_idx];
7354 cur_ptr = cur_next;
7355 cur_end = cur_ptr + cur_hdr->len;
7356 cur_next = cur_end + cur_hdr->cr + 1;
7357
7358 /* We have one full header between cur_ptr and cur_end, and the
7359 * next header starts at cur_next. We're only interested in
7360 * "Cookie:" headers.
7361 */
7362
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7363 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7364 if (val) {
7365 if ((cur_end - (cur_ptr + val) >= 8) &&
7366 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7367 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7368 return;
7369 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7370 }
7371
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7372 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7373 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7374 continue;
7375
7376 /* OK, right now we know we have a cache-control header at cur_ptr */
7377
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7378 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7379
7380 if (p1 >= cur_end) /* no more info */
7381 continue;
7382
7383 /* p1 is at the beginning of the value */
7384 p2 = p1;
7385
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7386 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7387 p2++;
7388
7389 /* we have a complete value between p1 and p2 */
7390 if (p2 < cur_end && *p2 == '=') {
7391 /* we have something of the form no-cache="set-cookie" */
7392 if ((cur_end - p1 >= 21) &&
7393 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7394 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7395 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7396 continue;
7397 }
7398
7399 /* OK, so we know that either p2 points to the end of string or to a comma */
7400 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7401 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7402 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7403 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7404 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7405 return;
7406 }
7407
7408 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7409 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7410 continue;
7411 }
7412 }
7413}
7414
7415
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7416/*
7417 * Try to retrieve a known appsession in the URI, then the associated server.
7418 * If the server is found, it's assigned to the session.
7419 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7420void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7421{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7422 char *end_params, *first_param, *cur_param, *next_param;
7423 char separator;
7424 int value_len;
7425
7426 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7427
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7428 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7429 (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]7430 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7431 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7432
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7433 first_param = NULL;
7434 switch (mode) {
7435 case PR_O2_AS_M_PP:
7436 first_param = memchr(begin, ';', len);
7437 break;
7438 case PR_O2_AS_M_QS:
7439 first_param = memchr(begin, '?', len);
7440 break;
7441 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7442
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7443 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7444 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7445 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7446
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7447 switch (mode) {
7448 case PR_O2_AS_M_PP:
7449 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7450 end_params = (char *) begin + len;
7451 }
7452 separator = ';';
7453 break;
7454 case PR_O2_AS_M_QS:
7455 end_params = (char *) begin + len;
7456 separator = '&';
7457 break;
7458 default:
7459 /* unknown mode, shouldn't happen */
7460 return;
7461 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7462
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7463 cur_param = next_param = end_params;
7464 while (cur_param > first_param) {
7465 cur_param--;
7466 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7467 /* let's see if this is the appsession parameter */
7468 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7469 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7470 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7471 /* Cool... it's the right one */
7472 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7473 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7474 if (value_len > 0) {
7475 manage_client_side_appsession(t, cur_param, value_len);
7476 }
7477 break;
7478 }
7479 next_param = cur_param;
7480 }
7481 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7482#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7483 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7484 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7485#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7486}
7487
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7488/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7489 * 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]7490 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7491 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7492 * 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]7493 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7494 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7495 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7496 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7497int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7498{
7499 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7500 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7501 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7502 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7503
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7504 if (!uri_auth)
7505 return 0;
7506
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7507 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]7508 return 0;
7509
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7510 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7511 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7512
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7513 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7514 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7515 return 0;
7516
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7517 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7518 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7519 return 0;
7520
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7521 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7522 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7523 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7524 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7525 break;
7526 }
7527 h++;
7528 }
7529
7530 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7531 h = uri + uri_auth->uri_len;
7532 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7533 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7534 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7535 break;
7536 }
7537 h++;
7538 }
7539 }
7540
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7541 h = uri + uri_auth->uri_len;
7542 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7543 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7544 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7545 break;
7546 }
7547 h++;
7548 }
7549
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7550 h = uri + uri_auth->uri_len;
7551 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7552 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7553 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7554 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7555 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7556 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7557 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7558 si->applet.ctx.stats.st_code = i;
7559 break;
7560 }
7561 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7562 break;
7563 }
7564 h++;
7565 }
7566
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7567 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7568
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7569 return 1;
7570}
7571
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7572/*
7573 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7574 * By default it tries to report the error position as msg->err_pos. However if
7575 * this one is not set, it will then report msg->next, which is the last known
7576 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7577 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7578 */
7579void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7580 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7581 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7582{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7583 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7584 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7585
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7586 es->len = MIN(chn->buf->i, sizeof(es->buf));
7587 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7588 len1 = MIN(len1, es->len);
7589 len2 = es->len - len1; /* remaining data if buffer wraps */
7590
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7591 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7592 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7593 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7594
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7595 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7596 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7597 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7598 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7599
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7600 es->when = date; // user-visible date
7601 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7602 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7603 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7604 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7605 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7606 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7607 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7608 es->s_flags = s->flags;
7609 es->t_flags = s->txn.flags;
7610 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7611 es->b_out = chn->buf->o;
7612 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7613 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7614 es->m_clen = msg->chunk_len;
7615 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7616}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7617
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7618/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7619 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7620 * performed over the whole headers. Otherwise it must contain a valid header
7621 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7622 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7623 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7624 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7625 * -1.
7626 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7627 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7628unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7629 struct hdr_idx *idx, int occ,
7630 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7631{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7632 struct hdr_ctx local_ctx;
7633 char *ptr_hist[MAX_HDR_HISTORY];
7634 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7635 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7636 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7637
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7638 if (!ctx) {
7639 local_ctx.idx = 0;
7640 ctx = &local_ctx;
7641 }
7642
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7643 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7644 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7645 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7646 occ--;
7647 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7648 *vptr = ctx->line + ctx->val;
7649 *vlen = ctx->vlen;
7650 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7651 }
7652 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7653 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7654 }
7655
7656 /* negative occurrence, we scan all the list then walk back */
7657 if (-occ > MAX_HDR_HISTORY)
7658 return 0;
7659
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7660 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7661 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7662 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7663 len_hist[hist_ptr] = ctx->vlen;
7664 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7665 hist_ptr = 0;
7666 found++;
7667 }
7668 if (-occ > found)
7669 return 0;
7670 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7671 * find occurrence -occ, so we have to check [hist_ptr+occ].
7672 */
7673 hist_ptr += occ;
7674 if (hist_ptr >= MAX_HDR_HISTORY)
7675 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7676 *vptr = ptr_hist[hist_ptr];
7677 *vlen = len_hist[hist_ptr];
7678 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7679}
7680
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7681/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7682 * Print a debug line with a header. Always stop at the first CR or LF char,
7683 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7684 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7685 */
7686void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7687{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7688 int max;
7689 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7690 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7691 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7692
7693 for (max = 0; start + max < end; max++)
7694 if (start[max] == '\r' || start[max] == '\n')
7695 break;
7696
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7697 UBOUND(max, trash.size - trash.len - 3);
7698 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7699 trash.str[trash.len++] = '\n';
7700 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7701}
7702
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7703/*
7704 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7705 * the required fields are properly allocated and that we only need to (re)init
7706 * them. This should be used before processing any new request.
7707 */
7708void http_init_txn(struct session *s)
7709{
7710 struct http_txn *txn = &s->txn;
7711 struct proxy *fe = s->fe;
7712
7713 txn->flags = 0;
7714 txn->status = -1;
7715
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7716 global.req_count++;
7717
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7718 txn->cookie_first_date = 0;
7719 txn->cookie_last_date = 0;
7720
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7721 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7722 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7723 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7724 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7725 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7726 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7727 txn->req.chunk_len = 0LL;
7728 txn->req.body_len = 0LL;
7729 txn->rsp.chunk_len = 0LL;
7730 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7731 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7732 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7733 txn->req.chn = s->req;
7734 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7735
7736 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7737
7738 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7739 if (fe->options2 & PR_O2_REQBUG_OK)
7740 txn->req.err_pos = -1; /* let buggy requests pass */
7741
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7742 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7743 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7744
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7745 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7746 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7747
7748 if (txn->hdr_idx.v)
7749 hdr_idx_init(&txn->hdr_idx);
7750}
7751
7752/* to be used at the end of a transaction */
7753void http_end_txn(struct session *s)
7754{
7755 struct http_txn *txn = &s->txn;
7756
7757 /* these ones will have been dynamically allocated */
7758 pool_free2(pool2_requri, txn->uri);
7759 pool_free2(pool2_capture, txn->cli_cookie);
7760 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7761 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7762 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7763
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7764 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7765 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7766 txn->uri = NULL;
7767 txn->srv_cookie = NULL;
7768 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7769
7770 if (txn->req.cap) {
7771 struct cap_hdr *h;
7772 for (h = s->fe->req_cap; h; h = h->next)
7773 pool_free2(h->pool, txn->req.cap[h->index]);
7774 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7775 }
7776
7777 if (txn->rsp.cap) {
7778 struct cap_hdr *h;
7779 for (h = s->fe->rsp_cap; h; h = h->next)
7780 pool_free2(h->pool, txn->rsp.cap[h->index]);
7781 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7782 }
7783
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7784}
7785
7786/* to be used at the end of a transaction to prepare a new one */
7787void http_reset_txn(struct session *s)
7788{
7789 http_end_txn(s);
7790 http_init_txn(s);
7791
7792 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7793 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7794 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7795 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7796 /* re-init store persistence */
7797 s->store_count = 0;
7798
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7799 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7800
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7801 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7802
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7803 /* We must trim any excess data from the response buffer, because we
7804 * may have blocked an invalid response from a server that we don't
7805 * want to accidentely forward once we disable the analysers, nor do
7806 * we want those data to come along with next response. A typical
7807 * example of such data would be from a buggy server responding to
7808 * a HEAD with some data, or sending more than the advertised
7809 * content-length.
7810 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7811 if (unlikely(s->rep->buf->i))
7812 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7813
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7814 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7815 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7816
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7817 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7818 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7819
7820 s->req->rex = TICK_ETERNITY;
7821 s->req->wex = TICK_ETERNITY;
7822 s->req->analyse_exp = TICK_ETERNITY;
7823 s->rep->rex = TICK_ETERNITY;
7824 s->rep->wex = TICK_ETERNITY;
7825 s->rep->analyse_exp = TICK_ETERNITY;
7826}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7827
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7828void free_http_req_rules(struct list *r) {
7829 struct http_req_rule *tr, *pr;
7830
7831 list_for_each_entry_safe(pr, tr, r, list) {
7832 LIST_DEL(&pr->list);
7833 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7834 free(pr->http_auth.realm);
7835
7836 free(pr);
7837 }
7838}
7839
7840struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7841{
7842 struct http_req_rule *rule;
7843 int cur_arg;
7844
7845 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7846 if (!rule) {
7847 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7848 return NULL;
7849 }
7850
7851 if (!*args[0]) {
7852 goto req_error_parsing;
7853 } else if (!strcmp(args[0], "allow")) {
7854 rule->action = HTTP_REQ_ACT_ALLOW;
7855 cur_arg = 1;
7856 } else if (!strcmp(args[0], "deny")) {
7857 rule->action = HTTP_REQ_ACT_DENY;
7858 cur_arg = 1;
7859 } else if (!strcmp(args[0], "auth")) {
7860 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7861 cur_arg = 1;
7862
7863 while(*args[cur_arg]) {
7864 if (!strcmp(args[cur_arg], "realm")) {
7865 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7866 cur_arg+=2;
7867 continue;
7868 } else
7869 break;
7870 }
7871 } else {
7872req_error_parsing:
7873 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7874 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7875 return NULL;
7876 }
7877
7878 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7879 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7880 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7881
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7882 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7883 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7884 file, linenum, args[0], errmsg);
7885 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7886 return NULL;
7887 }
7888 rule->cond = cond;
7889 }
7890 else if (*args[cur_arg]) {
7891 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7892 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7893 file, linenum, args[0], args[cur_arg]);
7894 return NULL;
7895 }
7896
7897 return rule;
7898}
7899
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7900/************************************************************************/
7901/* The code below is dedicated to ACL parsing and matching */
7902/************************************************************************/
7903
7904
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7905/* This function ensures that the prerequisites for an L7 fetch are ready,
7906 * which means that a request or response is ready. If some data is missing,
7907 * 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]7908 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7909 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7910 *
7911 * The function returns :
7912 * 0 if some data is missing or if the requested data cannot be fetched
7913 * -1 if it is certain that we'll never have any HTTP message there
7914 * 1 if an HTTP message is ready
7915 */
7916static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7917acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7918 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7919{
7920 struct http_txn *txn = l7;
7921 struct http_msg *msg = &txn->req;
7922
7923 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7924 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7925 */
7926
7927 if (unlikely(!s || !txn))
7928 return 0;
7929
7930 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7931 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7932
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7933 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7934 if (unlikely(!s->req))
7935 return 0;
7936
7937 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7938 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7939 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7940 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7941 return -1;
7942 }
7943
7944 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7945 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7946 http_msg_analyzer(msg, &txn->hdr_idx);
7947
7948 /* Still no valid request ? */
7949 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7950 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7951 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7952 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7953 return -1;
7954 }
7955 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7956 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7957 return 0;
7958 }
7959
7960 /* OK we just got a valid HTTP request. We have some minor
7961 * preparation to perform so that further checks can rely
7962 * on HTTP tests.
7963 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7964 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7965 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7966 s->flags |= SN_REDIRECTABLE;
7967
7968 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7969 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7970 return -1;
7971 }
7972 }
7973
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7974 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7975 return 0; /* data might have moved and indexes changed */
7976
7977 /* otherwise everything's ready for the request */
7978 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7979 else {
7980 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7981 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7982 return 0;
7983 }
7984
7985 /* everything's OK */
7986 return 1;
7987}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7988
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7989#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7990 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]7991
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7992#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7993 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]7994
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7995
7996/* 1. Check on METHOD
7997 * We use the pre-parsed method if it is known, and store its number as an
7998 * integer. If it is unknown, we use the pointer and the length.
7999 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8000static 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]8001{
8002 int len, meth;
8003
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8004 len = strlen(*text);
8005 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8006
8007 pattern->val.i = meth;
8008 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8009 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8010 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8011 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8012 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8013 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8014 pattern->len = len;
8015 }
8016 return 1;
8017}
8018
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8019/* This function fetches the method of current HTTP request and stores
8020 * it in the global pattern struct as a chunk. There are two possibilities :
8021 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8022 * in <len> and <ptr> is NULL ;
8023 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8024 * <len> to its length.
8025 * This is intended to be used with acl_match_meth() only.
8026 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8027static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8028acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8029 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8030{
8031 int meth;
8032 struct http_txn *txn = l7;
8033
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8034 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8035
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8036 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8037 smp->type = SMP_T_UINT;
8038 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8039 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8040 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8041 /* ensure the indexes are not affected */
8042 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8043 smp->type = SMP_T_CSTR;
8044 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8045 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8046 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8047 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8048 return 1;
8049}
8050
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8051/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8052static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8053{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8054 int icase;
8055
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8056
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8057 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8058 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8059 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8060 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8061 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8062 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8063
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8064 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8065 if (pattern->val.i != HTTP_METH_OTHER)
8066 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8067
8068 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8069 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8070 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8071
8072 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8073 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8074 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8075 return ACL_PAT_FAIL;
8076 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8077}
8078
8079/* 2. Check on Request/Status Version
8080 * We simply compare strings here.
8081 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8082static 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]8083{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8084 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8085 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8086 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8087 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8088 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8089 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8090 return 1;
8091}
8092
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8093static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8094acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8095 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8096{
8097 struct http_txn *txn = l7;
8098 char *ptr;
8099 int len;
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 Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8103 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8104 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8105
8106 while ((len-- > 0) && (*ptr++ != '/'));
8107 if (len <= 0)
8108 return 0;
8109
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8110 smp->type = SMP_T_CSTR;
8111 smp->data.str.str = ptr;
8112 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8113
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8114 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8115 return 1;
8116}
8117
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8118static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8119acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8120 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8121{
8122 struct http_txn *txn = l7;
8123 char *ptr;
8124 int len;
8125
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8126 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8127
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8128 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8129 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8130
8131 while ((len-- > 0) && (*ptr++ != '/'));
8132 if (len <= 0)
8133 return 0;
8134
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8135 smp->type = SMP_T_CSTR;
8136 smp->data.str.str = ptr;
8137 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8138
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8139 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8140 return 1;
8141}
8142
8143/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8144static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8145acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8146 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8147{
8148 struct http_txn *txn = l7;
8149 char *ptr;
8150 int len;
8151
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8152 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8153
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8154 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8155 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8156
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8157 smp->type = SMP_T_UINT;
8158 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8159 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8160 return 1;
8161}
8162
8163/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8164static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8165smp_fetch_url(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 Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8167{
8168 struct http_txn *txn = l7;
8169
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8170 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8171
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8172 smp->type = SMP_T_CSTR;
8173 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8174 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8175 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8176 return 1;
8177}
8178
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8179static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8180smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8181 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8182{
8183 struct http_txn *txn = l7;
8184
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8185 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8186
8187 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8188 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8189 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8190 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8191 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8192 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8193
8194 /*
8195 * If we are parsing url in frontend space, we prepare backend stage
8196 * to not parse again the same url ! optimization lazyness...
8197 */
8198 if (px->options & PR_O_HTTP_PROXY)
8199 l4->flags |= SN_ADDR_SET;
8200
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8201 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8202 return 1;
8203}
8204
8205static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8206smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8207 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8208{
8209 struct http_txn *txn = l7;
8210
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8211 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8212
8213 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8214 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8215 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8216 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]8217
8218 if (px->options & PR_O_HTTP_PROXY)
8219 l4->flags |= SN_ADDR_SET;
8220
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8221 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8222 return 1;
8223}
8224
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8225/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8226 * Accepts an optional argument of type string containing the header field name,
8227 * and an optional argument of type signed or unsigned integer to request an
8228 * explicit occurrence of the header. Note that in the event of a missing name,
8229 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8230 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8231static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8232smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8233 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8234{
8235 struct http_txn *txn = l7;
8236 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8237 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8238 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]8239 int occ = 0;
8240 const char *name_str = NULL;
8241 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8242
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8243 if (args) {
8244 if (args[0].type != ARGT_STR)
8245 return 0;
8246 name_str = args[0].data.str.str;
8247 name_len = args[0].data.str.len;
8248
8249 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8250 occ = args[1].data.uint;
8251 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8252
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8253 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8254
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8255 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8256 /* search for header from the beginning */
8257 ctx->idx = 0;
8258
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8259 if (!occ && !(opt & SMP_OPT_ITERATE))
8260 /* no explicit occurrence and single fetch => last header by default */
8261 occ = -1;
8262
8263 if (!occ)
8264 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8265 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8266
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8267 smp->type = SMP_T_CSTR;
8268 smp->flags |= SMP_F_VOL_HDR;
8269 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]8270 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8271
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8272 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8273 return 0;
8274}
8275
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8276/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8277 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8278 */
8279static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8280smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8281 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8282{
8283 struct http_txn *txn = l7;
8284 struct hdr_idx *idx = &txn->hdr_idx;
8285 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8286 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]8287 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8288
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8289 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8290 return 0;
8291
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8292 CHECK_HTTP_MESSAGE_FIRST();
8293
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8294 ctx.idx = 0;
8295 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8296 while (http_find_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8297 cnt++;
8298
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8299 smp->type = SMP_T_UINT;
8300 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8301 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8302 return 1;
8303}
8304
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8305/* Fetch an HTTP header's integer value. The integer value is returned. It
8306 * takes a mandatory argument of type string and an optional one of type int
8307 * to designate a specific occurrence. It returns an unsigned integer, which
8308 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8309 */
8310static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8311smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8312 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8313{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8314 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8315
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8316 if (ret > 0) {
8317 smp->type = SMP_T_UINT;
8318 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8319 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8320
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8321 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8322}
8323
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8324/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8325 * and an optional one of type int to designate a specific occurrence.
8326 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8327 */
8328static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8329smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8330 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8331{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8332 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8333
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8334 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8335 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8336 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8337 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8338 } else {
8339 struct chunk *temp = sample_get_trash_chunk();
8340 if (smp->data.str.len < temp->size - 1) {
8341 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8342 temp->str[smp->data.str.len] = '\0';
8343 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8344 smp->type = SMP_T_IPV6;
8345 break;
8346 }
8347 }
8348 }
8349
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8350 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8351 if (!(smp->flags & SMP_F_NOT_LAST))
8352 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8353 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8354 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8355}
8356
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8357/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8358 * the first '/' after the possible hostname, and ends before the possible '?'.
8359 */
8360static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8361smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8362 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8363{
8364 struct http_txn *txn = l7;
8365 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8366
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8367 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8368
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8369 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]8370 ptr = http_get_path(txn);
8371 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8372 return 0;
8373
8374 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8375 smp->type = SMP_T_CSTR;
8376 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8377
8378 while (ptr < end && *ptr != '?')
8379 ptr++;
8380
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8381 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8382 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8383 return 1;
8384}
8385
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8386/* This produces a concatenation of the first occurrence of the Host header
8387 * followed by the path component if it begins with a slash ('/'). This means
8388 * that '*' will not be added, resulting in exactly the first Host entry.
8389 * If no Host header is found, then the path is returned as-is. The returned
8390 * value is stored in the trash so it does not need to be marked constant.
8391 */
8392static int
8393smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8394 const struct arg *args, struct sample *smp)
8395{
8396 struct http_txn *txn = l7;
8397 char *ptr, *end, *beg;
8398 struct hdr_ctx ctx;
8399
8400 CHECK_HTTP_MESSAGE_FIRST();
8401
8402 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8403 if (!http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx) ||
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8404 !ctx.vlen)
8405 return smp_fetch_path(px, l4, l7, opt, args, smp);
8406
8407 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8408 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8409 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8410 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8411 smp->data.str.len = ctx.vlen;
8412
8413 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8414 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8415 beg = http_get_path(txn);
8416 if (!beg)
8417 beg = end;
8418
8419 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8420
8421 if (beg < ptr && *beg == '/') {
8422 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8423 smp->data.str.len += ptr - beg;
8424 }
8425
8426 smp->flags = SMP_F_VOL_1ST;
8427 return 1;
8428}
8429
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8430static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8431acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8432 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8433{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8434 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8435 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8436 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8437
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8438 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8439
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8440 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8441 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8442 return 1;
8443}
8444
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8445/* return a valid test if the current request is the first one on the connection */
8446static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8447acl_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]8448 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8449{
8450 if (!s)
8451 return 0;
8452
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8453 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8454 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8455 return 1;
8456}
8457
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8458/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8459static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8460acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8461 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8462{
8463
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8464 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8465 return 0;
8466
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8467 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8468
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8469 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8470 return 0;
8471
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8472 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8473 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]8474 return 1;
8475}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8476
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8477/* Accepts exactly 1 argument of type userlist */
8478static int
8479acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8480 const struct arg *args, struct sample *smp)
8481{
8482
8483 if (!args || args->type != ARGT_USR)
8484 return 0;
8485
8486 CHECK_HTTP_MESSAGE_FIRST();
8487
8488 if (!get_http_auth(l4))
8489 return 0;
8490
8491 /* acl_match_auth() will need several information at once */
8492 smp->ctx.a[0] = args->data.usr; /* user list */
8493 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8494 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8495
8496 /* if the user does not belong to the userlist or has a wrong password,
8497 * report that it unconditionally does not match. Otherwise we return
8498 * a non-zero integer which will be ignored anyway since all the params
8499 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8500 */
8501 smp->type = SMP_T_BOOL;
8502 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8503 if (smp->data.uint)
8504 smp->type = SMP_T_UINT;
8505
8506 return 1;
8507}
8508
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8509/* Try to find the next occurrence of a cookie name in a cookie header value.
8510 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8511 * the cookie value is returned into *value and *value_l, and the function
8512 * returns a pointer to the next pointer to search from if the value was found.
8513 * Otherwise if the cookie was not found, NULL is returned and neither value
8514 * nor value_l are touched. The input <hdr> string should first point to the
8515 * header's value, and the <hdr_end> pointer must point to the first character
8516 * not part of the value. <list> must be non-zero if value may represent a list
8517 * of values (cookie headers). This makes it faster to abort parsing when no
8518 * list is expected.
8519 */
8520static char *
8521extract_cookie_value(char *hdr, const char *hdr_end,
8522 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8523 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8524{
8525 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8526 char *next;
8527
8528 /* we search at least a cookie name followed by an equal, and more
8529 * generally something like this :
8530 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8531 */
8532 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8533 /* Iterate through all cookies on this line */
8534
8535 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8536 att_beg++;
8537
8538 /* find att_end : this is the first character after the last non
8539 * space before the equal. It may be equal to hdr_end.
8540 */
8541 equal = att_end = att_beg;
8542
8543 while (equal < hdr_end) {
8544 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8545 break;
8546 if (http_is_spht[(unsigned char)*equal++])
8547 continue;
8548 att_end = equal;
8549 }
8550
8551 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8552 * is between <att_beg> and <equal>, both may be identical.
8553 */
8554
8555 /* look for end of cookie if there is an equal sign */
8556 if (equal < hdr_end && *equal == '=') {
8557 /* look for the beginning of the value */
8558 val_beg = equal + 1;
8559 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8560 val_beg++;
8561
8562 /* find the end of the value, respecting quotes */
8563 next = find_cookie_value_end(val_beg, hdr_end);
8564
8565 /* make val_end point to the first white space or delimitor after the value */
8566 val_end = next;
8567 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8568 val_end--;
8569 } else {
8570 val_beg = val_end = next = equal;
8571 }
8572
8573 /* We have nothing to do with attributes beginning with '$'. However,
8574 * they will automatically be removed if a header before them is removed,
8575 * since they're supposed to be linked together.
8576 */
8577 if (*att_beg == '$')
8578 continue;
8579
8580 /* Ignore cookies with no equal sign */
8581 if (equal == next)
8582 continue;
8583
8584 /* Now we have the cookie name between att_beg and att_end, and
8585 * its value between val_beg and val_end.
8586 */
8587
8588 if (att_end - att_beg == cookie_name_l &&
8589 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8590 /* let's return this value and indicate where to go on from */
8591 *value = val_beg;
8592 *value_l = val_end - val_beg;
8593 return next + 1;
8594 }
8595
8596 /* Set-Cookie headers only have the name in the first attr=value part */
8597 if (!list)
8598 break;
8599 }
8600
8601 return NULL;
8602}
8603
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8604/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8605 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8606 * 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]8607 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8608 * 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]8609 * Accepts exactly 1 argument of type string. If the input options indicate
8610 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8611 */
8612static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8613smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8614 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8615{
8616 struct http_txn *txn = l7;
8617 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8618 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8619 const struct http_msg *msg;
8620 const char *hdr_name;
8621 int hdr_name_len;
8622 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8623 int occ = 0;
8624 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8625
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8626 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8627 return 0;
8628
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8629 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8630
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8631 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8632 msg = &txn->req;
8633 hdr_name = "Cookie";
8634 hdr_name_len = 6;
8635 } else {
8636 msg = &txn->rsp;
8637 hdr_name = "Set-Cookie";
8638 hdr_name_len = 10;
8639 }
8640
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8641 if (!occ && !(opt & SMP_OPT_ITERATE))
8642 /* no explicit occurrence and single fetch => last cookie by default */
8643 occ = -1;
8644
8645 /* OK so basically here, either we want only one value and it's the
8646 * last one, or we want to iterate over all of them and we fetch the
8647 * next one.
8648 */
8649
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8650 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8651 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8652 /* search for the header from the beginning, we must first initialize
8653 * the search parameters.
8654 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8655 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8656 ctx->idx = 0;
8657 }
8658
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8659 smp->flags |= SMP_F_VOL_HDR;
8660
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8661 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8662 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8663 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8664 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8665 goto out;
8666
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8667 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8668 continue;
8669
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8670 smp->ctx.a[0] = ctx->line + ctx->val;
8671 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8672 }
8673
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8674 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8675 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]8676 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8677 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8678 &smp->data.str.str,
8679 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8680 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8681 found = 1;
8682 if (occ >= 0) {
8683 /* one value was returned into smp->data.str.{str,len} */
8684 smp->flags |= SMP_F_NOT_LAST;
8685 return 1;
8686 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8687 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8688 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8689 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8690 /* all cookie headers and values were scanned. If we're looking for the
8691 * last occurrence, we may return it now.
8692 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8693 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8694 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8695 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8696}
8697
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8698/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8699 * 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]8700 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8701 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8702 */
8703static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8704acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8705 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8706{
8707 struct http_txn *txn = l7;
8708 struct hdr_idx *idx = &txn->hdr_idx;
8709 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8710 const struct http_msg *msg;
8711 const char *hdr_name;
8712 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8713 int cnt;
8714 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8715 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8716
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8717 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8718 return 0;
8719
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8720 CHECK_HTTP_MESSAGE_FIRST();
8721
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8722 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8723 msg = &txn->req;
8724 hdr_name = "Cookie";
8725 hdr_name_len = 6;
8726 } else {
8727 msg = &txn->rsp;
8728 hdr_name = "Set-Cookie";
8729 hdr_name_len = 10;
8730 }
8731
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8732 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8733 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8734 ctx.idx = 0;
8735 cnt = 0;
8736
8737 while (1) {
8738 /* Note: val_beg == NULL every time we need to fetch a new header */
8739 if (!val_beg) {
8740 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8741 break;
8742
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8743 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8744 continue;
8745
8746 val_beg = ctx.line + ctx.val;
8747 val_end = val_beg + ctx.vlen;
8748 }
8749
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8750 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8751 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8752 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8753 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8754 &smp->data.str.str,
8755 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8756 cnt++;
8757 }
8758 }
8759
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8760 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8761 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8762 return 1;
8763}
8764
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8765/* Fetch an cookie's integer value. The integer value is returned. It
8766 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8767 */
8768static int
8769smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8770 const struct arg *args, struct sample *smp)
8771{
8772 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8773
8774 if (ret > 0) {
8775 smp->type = SMP_T_UINT;
8776 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8777 }
8778
8779 return ret;
8780}
8781
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8782/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8783/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8784/************************************************************************/
8785
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8786/*
8787 * Given a path string and its length, find the position of beginning of the
8788 * query string. Returns NULL if no query string is found in the path.
8789 *
8790 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8791 *
8792 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8793 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8794static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8795{
8796 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8797
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8798 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8799 return p ? p + 1 : NULL;
8800}
8801
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8802static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8803{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8804 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8805}
8806
8807/*
8808 * Given a url parameter, find the starting position of the first occurence,
8809 * or NULL if the parameter is not found.
8810 *
8811 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8812 * the function will return query_string+8.
8813 */
8814static char*
8815find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8816 char* url_param_name, size_t url_param_name_l,
8817 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8818{
8819 char *pos, *last;
8820
8821 pos = query_string;
8822 last = query_string + query_string_l - url_param_name_l - 1;
8823
8824 while (pos <= last) {
8825 if (pos[url_param_name_l] == '=') {
8826 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8827 return pos;
8828 pos += url_param_name_l + 1;
8829 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8830 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8831 pos++;
8832 pos++;
8833 }
8834 return NULL;
8835}
8836
8837/*
8838 * Given a url parameter name, returns its value and size into *value and
8839 * *value_l respectively, and returns non-zero. If the parameter is not found,
8840 * zero is returned and value/value_l are not touched.
8841 */
8842static int
8843find_url_param_value(char* path, size_t path_l,
8844 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8845 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8846{
8847 char *query_string, *qs_end;
8848 char *arg_start;
8849 char *value_start, *value_end;
8850
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8851 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8852 if (!query_string)
8853 return 0;
8854
8855 qs_end = path + path_l;
8856 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8857 url_param_name, url_param_name_l,
8858 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8859 if (!arg_start)
8860 return 0;
8861
8862 value_start = arg_start + url_param_name_l + 1;
8863 value_end = value_start;
8864
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8865 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8866 value_end++;
8867
8868 *value = value_start;
8869 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8870 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8871}
8872
8873static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8874smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8875 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8876{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8877 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8878 struct http_txn *txn = l7;
8879 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8880
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8881 if (!args || args[0].type != ARGT_STR ||
8882 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8883 return 0;
8884
8885 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8886
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8887 if (args[1].type)
8888 delim = *args[1].data.str.str;
8889
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8890 if (!find_url_param_value(msg->chn->buf->p + msg->sl.rq.u, msg->sl.rq.u_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8891 args->data.str.str, args->data.str.len,
8892 &smp->data.str.str, &smp->data.str.len,
8893 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8894 return 0;
8895
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8896 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8897 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8898 return 1;
8899}
8900
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8901/* Return the signed integer value for the specified url parameter (see url_param
8902 * above).
8903 */
8904static int
8905smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8906 const struct arg *args, struct sample *smp)
8907{
8908 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8909
8910 if (ret > 0) {
8911 smp->type = SMP_T_UINT;
8912 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8913 }
8914
8915 return ret;
8916}
8917
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8918/* This function is used to validate the arguments passed to any "hdr" fetch
8919 * keyword. These keywords support an optional positive or negative occurrence
8920 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8921 * is assumed that the types are already the correct ones. Returns 0 on error,
8922 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8923 * error message in case of error, that the caller is responsible for freeing.
8924 * The initial location must either be freeable or NULL.
8925 */
8926static int val_hdr(struct arg *arg, char **err_msg)
8927{
8928 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8929 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8930 return 0;
8931 }
8932 return 1;
8933}
8934
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8935/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8936/* All supported ACL keywords must be declared here. */
8937/************************************************************************/
8938
8939/* Note: must not be declared <const> as its list will be overwritten.
8940 * Please take care of keeping this list alphabetically sorted.
8941 */
8942static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8943 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8944 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8945 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8946 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8947 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8948 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8949 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8950 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8951
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8952 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8953 { "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]8954 { "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]8955 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8956 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8957 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8958 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8959 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8960 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8961 { "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]8962
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8963 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8964 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8965 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8966 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8967 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8968 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8969 { "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 },
8970 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8971 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8972 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8973 { "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]8974
8975 { "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]8976 { "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]8977 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8978
8979 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8980
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8981 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8982 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8983 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8984 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8985 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8986 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8987 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8988 { "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]8989
8990 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8991 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8992 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8993
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8994 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8995 { "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]8996 { "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]8997 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8998 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8999 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9000 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9001 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9002 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9003 { "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]9004
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9005 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9006 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9007 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9008 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9009 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9010 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9011 { "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 },
9012 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9013 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9014 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9015 { "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]9016
9017 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9018
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9019 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9020 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9021 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9022 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9023 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9024 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9025 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9026 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9027 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9028 { "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]9029
9030 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9031 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9032 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9033 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9034 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9035 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9036 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9037 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9038 { "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]9039 { "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]9040
9041 { NULL, NULL, NULL, NULL },
9042}};
9043
9044/************************************************************************/
9045/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9046/************************************************************************/
9047/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9048static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9049 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9050 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9051 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9052 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9053 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9054 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9055 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9056 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9057 { "set-cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_RES }, /* deprecated */
Willy Tarreau9fcb9842012-04-20 14:45:49 +0200[diff] [blame]9058 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9059}};
9060
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9061
9062__attribute__((constructor))
9063static void __http_protocol_init(void)
9064{
9065 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9066 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9067}
9068
9069
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9070/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9071 * Local variables:
9072 * c-indent-level: 8
9073 * c-basic-offset: 8
9074 * End:
9075 */