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git01.mediatek.com / haproxy / 56adcf2cc928180e8c201c74af66b674806d1f74 / . / src / proto_http.c
blob: 60b630dc3a884fe4aea7b084e94bf8ab68ce8765 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]95/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
96const char *HTTP_401_fmt =
97 "HTTP/1.0 401 Unauthorized\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]100 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
102 "\r\n"
103 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
104
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]105const char *HTTP_407_fmt =
106 "HTTP/1.0 407 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
109 "Content-Type: text/html\r\n"
110 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]116 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117 [HTTP_ERR_400] = 400,
118 [HTTP_ERR_403] = 403,
119 [HTTP_ERR_408] = 408,
120 [HTTP_ERR_500] = 500,
121 [HTTP_ERR_502] = 502,
122 [HTTP_ERR_503] = 503,
123 [HTTP_ERR_504] = 504,
124};
125
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]126static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]127 [HTTP_ERR_200] =
128 "HTTP/1.0 200 OK\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "\r\n"
133 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]136 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 "Cache-Control: no-cache\r\n"
138 "Connection: close\r\n"
139 "Content-Type: text/html\r\n"
140 "\r\n"
141 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
142
143 [HTTP_ERR_403] =
144 "HTTP/1.0 403 Forbidden\r\n"
145 "Cache-Control: no-cache\r\n"
146 "Connection: close\r\n"
147 "Content-Type: text/html\r\n"
148 "\r\n"
149 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
150
151 [HTTP_ERR_408] =
152 "HTTP/1.0 408 Request Time-out\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
158
159 [HTTP_ERR_500] =
160 "HTTP/1.0 500 Server Error\r\n"
161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
166
167 [HTTP_ERR_502] =
168 "HTTP/1.0 502 Bad Gateway\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
174
175 [HTTP_ERR_503] =
176 "HTTP/1.0 503 Service Unavailable\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
182
183 [HTTP_ERR_504] =
184 "HTTP/1.0 504 Gateway Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
190
191};
192
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]193/* status codes available for the stats admin page (strictly 4 chars length) */
194const char *stat_status_codes[STAT_STATUS_SIZE] = {
195 [STAT_STATUS_DENY] = "DENY",
196 [STAT_STATUS_DONE] = "DONE",
197 [STAT_STATUS_ERRP] = "ERRP",
198 [STAT_STATUS_EXCD] = "EXCD",
199 [STAT_STATUS_NONE] = "NONE",
200 [STAT_STATUS_PART] = "PART",
201 [STAT_STATUS_UNKN] = "UNKN",
202};
203
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205/* We must put the messages here since GCC cannot initialize consts depending
206 * on strlen().
207 */
208struct chunk http_err_chunks[HTTP_ERR_SIZE];
209
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210#define FD_SETS_ARE_BITFIELDS
211#ifdef FD_SETS_ARE_BITFIELDS
212/*
213 * This map is used with all the FD_* macros to check whether a particular bit
214 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
215 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
216 * byte should be encoded. Be careful to always pass bytes from 0 to 255
217 * exclusively to the macros.
218 */
219fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
221
222#else
223#error "Check if your OS uses bitfields for fd_sets"
224#endif
225
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]226void init_proto_http()
227{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]228 int i;
229 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]231
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]232 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
233 if (!http_err_msgs[msg]) {
234 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
235 abort();
236 }
237
238 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
239 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
240 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]241
242 /* initialize the log header encoding map : '{|}"#' should be encoded with
243 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
244 * URL encoding only requires '"', '#' to be encoded as well as non-
245 * printable characters above.
246 */
247 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
248 memset(url_encode_map, 0, sizeof(url_encode_map));
249 for (i = 0; i < 32; i++) {
250 FD_SET(i, hdr_encode_map);
251 FD_SET(i, url_encode_map);
252 }
253 for (i = 127; i < 256; i++) {
254 FD_SET(i, hdr_encode_map);
255 FD_SET(i, url_encode_map);
256 }
257
258 tmp = "\"#{|}";
259 while (*tmp) {
260 FD_SET(*tmp, hdr_encode_map);
261 tmp++;
262 }
263
264 tmp = "\"#";
265 while (*tmp) {
266 FD_SET(*tmp, url_encode_map);
267 tmp++;
268 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]269
270 /* memory allocations */
271 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]272 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]273}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]274
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]275/*
276 * We have 26 list of methods (1 per first letter), each of which can have
277 * up to 3 entries (2 valid, 1 null).
278 */
279struct http_method_desc {
280 http_meth_t meth;
281 int len;
282 const char text[8];
283};
284
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]285const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]286 ['C' - 'A'] = {
287 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
288 },
289 ['D' - 'A'] = {
290 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
291 },
292 ['G' - 'A'] = {
293 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
294 },
295 ['H' - 'A'] = {
296 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
297 },
298 ['P' - 'A'] = {
299 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
300 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
301 },
302 ['T' - 'A'] = {
303 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
304 },
305 /* rest is empty like this :
306 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
307 */
308};
309
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]310/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]311 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]312 * RFC2616 for those chars.
313 */
314
315const char http_is_spht[256] = {
316 [' '] = 1, ['\t'] = 1,
317};
318
319const char http_is_crlf[256] = {
320 ['\r'] = 1, ['\n'] = 1,
321};
322
323const char http_is_lws[256] = {
324 [' '] = 1, ['\t'] = 1,
325 ['\r'] = 1, ['\n'] = 1,
326};
327
328const char http_is_sep[256] = {
329 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
330 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
331 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
332 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
333 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
334};
335
336const char http_is_ctl[256] = {
337 [0 ... 31] = 1,
338 [127] = 1,
339};
340
341/*
342 * A token is any ASCII char that is neither a separator nor a CTL char.
343 * Do not overwrite values in assignment since gcc-2.95 will not handle
344 * them correctly. Instead, define every non-CTL char's status.
345 */
346const char http_is_token[256] = {
347 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
348 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
349 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
350 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
351 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
352 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
353 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
354 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
355 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
356 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
357 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
358 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
359 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
360 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
361 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
362 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
363 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
364 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
365 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
366 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
367 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
368 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
369 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
370 ['|'] = 1, ['}'] = 0, ['~'] = 1,
371};
372
373
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]374/*
375 * An http ver_token is any ASCII which can be found in an HTTP version,
376 * which includes 'H', 'T', 'P', '/', '.' and any digit.
377 */
378const char http_is_ver_token[256] = {
379 ['.'] = 1, ['/'] = 1,
380 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
381 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
382 ['H'] = 1, ['P'] = 1, ['T'] = 1,
383};
384
385
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]386/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]387 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
388 */
389#if defined(DEBUG_FSM)
390static void http_silent_debug(int line, struct session *s)
391{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]392 chunk_printf(&trash,
393 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
394 line,
395 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
396 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
397 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]398
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]399 chunk_printf(&trash,
400 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
401 line,
402 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
403 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
404 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]405}
406#else
407#define http_silent_debug(l,s) do { } while (0)
408#endif
409
410/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]411 * Adds a header and its CRLF at the tail of the message's buffer, just before
412 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]413 * The header is also automatically added to the index <hdr_idx>, and the end
414 * of headers is automatically adjusted. The number of bytes added is returned
415 * on success, otherwise <0 is returned indicating an error.
416 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]417int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]418{
419 int bytes, len;
420
421 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]422 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]423 if (!bytes)
424 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]425 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]426 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
427}
428
429/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]430 * Adds a header and its CRLF at the tail of the message's buffer, just before
431 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]432 * the buffer is only opened and the space reserved, but nothing is copied.
433 * The header is also automatically added to the index <hdr_idx>, and the end
434 * of headers is automatically adjusted. The number of bytes added is returned
435 * on success, otherwise <0 is returned indicating an error.
436 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]437int http_header_add_tail2(struct http_msg *msg,
438 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]439{
440 int bytes;
441
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]442 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]443 if (!bytes)
444 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]445 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]446 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
447}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]448
449/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]450 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
451 * If so, returns the position of the first non-space character relative to
452 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
453 * to return a pointer to the place after the first space. Returns 0 if the
454 * header name does not match. Checks are case-insensitive.
455 */
456int http_header_match2(const char *hdr, const char *end,
457 const char *name, int len)
458{
459 const char *val;
460
461 if (hdr + len >= end)
462 return 0;
463 if (hdr[len] != ':')
464 return 0;
465 if (strncasecmp(hdr, name, len) != 0)
466 return 0;
467 val = hdr + len + 1;
468 while (val < end && HTTP_IS_SPHT(*val))
469 val++;
470 if ((val >= end) && (len + 2 <= end - hdr))
471 return len + 2; /* we may replace starting from second space */
472 return val - hdr;
473}
474
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]475/* Find the end of the header value contained between <s> and <e>. See RFC2616,
476 * par 2.2 for more information. Note that it requires a valid header to return
477 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]478 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]479char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]480{
481 int quoted, qdpair;
482
483 quoted = qdpair = 0;
484 for (; s < e; s++) {
485 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]486 else if (quoted) {
487 if (*s == '\\') qdpair = 1;
488 else if (*s == '"') quoted = 0;
489 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]490 else if (*s == '"') quoted = 1;
491 else if (*s == ',') return s;
492 }
493 return s;
494}
495
496/* Find the first or next occurrence of header <name> in message buffer <sol>
497 * using headers index <idx>, and return it in the <ctx> structure. This
498 * structure holds everything necessary to use the header and find next
499 * occurrence. If its <idx> member is 0, the header is searched from the
500 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]501 * 1 when it finds a value, and 0 when there is no more. It is designed to work
502 * with headers defined as comma-separated lists. As a special case, if ctx->val
503 * is NULL when searching for a new values of a header, the current header is
504 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]505 */
506int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]507 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 struct hdr_ctx *ctx)
509{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]510 char *eol, *sov;
511 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]512
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]513 cur_idx = ctx->idx;
514 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]515 /* We have previously returned a value, let's search
516 * another one on the same line.
517 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]518 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]519 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]520 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]521 eol = sol + idx->v[cur_idx].len;
522
523 if (sov >= eol)
524 /* no more values in this header */
525 goto next_hdr;
526
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]527 /* values remaining for this header, skip the comma but save it
528 * for later use (eg: for header deletion).
529 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]530 sov++;
531 while (sov < eol && http_is_lws[(unsigned char)*sov])
532 sov++;
533
534 goto return_hdr;
535 }
536
537 /* first request for this header */
538 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]539 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]540 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]541 while (cur_idx) {
542 eol = sol + idx->v[cur_idx].len;
543
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]544 if (len == 0) {
545 /* No argument was passed, we want any header.
546 * To achieve this, we simply build a fake request. */
547 while (sol + len < eol && sol[len] != ':')
548 len++;
549 name = sol;
550 }
551
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]552 if ((len < eol - sol) &&
553 (sol[len] == ':') &&
554 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]555 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]556 sov = sol + len + 1;
557 while (sov < eol && http_is_lws[(unsigned char)*sov])
558 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]559
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]560 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561 ctx->prev = old_idx;
562 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]563 ctx->idx = cur_idx;
564 ctx->val = sov - sol;
565
566 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]567 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]568 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]569 eol--;
570 ctx->tws++;
571 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]572 ctx->vlen = eol - sov;
573 return 1;
574 }
575 next_hdr:
576 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]577 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]578 cur_idx = idx->v[cur_idx].next;
579 }
580 return 0;
581}
582
583int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]584 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]585 struct hdr_ctx *ctx)
586{
587 return http_find_header2(name, strlen(name), sol, idx, ctx);
588}
589
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]590/* Remove one value of a header. This only works on a <ctx> returned by one of
591 * the http_find_header functions. The value is removed, as well as surrounding
592 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]593 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]594 * message <msg>. The new index is returned. If it is zero, it means there is
595 * no more header, so any processing may stop. The ctx is always left in a form
596 * that can be handled by http_find_header2() to find next occurrence.
597 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]598int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]599{
600 int cur_idx = ctx->idx;
601 char *sol = ctx->line;
602 struct hdr_idx_elem *hdr;
603 int delta, skip_comma;
604
605 if (!cur_idx)
606 return 0;
607
608 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]609 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]610 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]611 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]612 http_msg_move_end(msg, delta);
613 idx->used--;
614 hdr->len = 0; /* unused entry */
615 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]616 if (idx->tail == ctx->idx)
617 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]618 ctx->idx = ctx->prev; /* walk back to the end of previous header */
619 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
620 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]621 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]622 return ctx->idx;
623 }
624
625 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]626 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
627 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]628 */
629
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]630 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]631 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]632 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]633 NULL, 0);
634 hdr->len += delta;
635 http_msg_move_end(msg, delta);
636 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]637 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]638 return ctx->idx;
639}
640
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]641/* This function handles a server error at the stream interface level. The
642 * stream interface is assumed to be already in a closed state. An optional
643 * message is copied into the input buffer, and an HTTP status code stored.
644 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]645 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]646 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]647static void http_server_error(struct session *t, struct stream_interface *si,
648 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]649{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]650 channel_auto_read(si->ob);
651 channel_abort(si->ob);
652 channel_auto_close(si->ob);
653 channel_erase(si->ob);
654 channel_auto_close(si->ib);
655 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]656 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]657 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]658 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]659 }
660 if (!(t->flags & SN_ERR_MASK))
661 t->flags |= err;
662 if (!(t->flags & SN_FINST_MASK))
663 t->flags |= finst;
664}
665
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]666/* This function returns the appropriate error location for the given session
667 * and message.
668 */
669
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]670struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]671{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]672 if (s->be->errmsg[msgnum].str)
673 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]674 else if (s->fe->errmsg[msgnum].str)
675 return &s->fe->errmsg[msgnum];
676 else
677 return &http_err_chunks[msgnum];
678}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]679
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]680/*
681 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
682 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
683 */
684static http_meth_t find_http_meth(const char *str, const int len)
685{
686 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]687 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]688
689 m = ((unsigned)*str - 'A');
690
691 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]692 for (h = http_methods[m]; h->len > 0; h++) {
693 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]694 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]695 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 };
698 return HTTP_METH_OTHER;
699 }
700 return HTTP_METH_NONE;
701
702}
703
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]704/* Parse the URI from the given transaction (which is assumed to be in request
705 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
706 * It is returned otherwise.
707 */
708static char *
709http_get_path(struct http_txn *txn)
710{
711 char *ptr, *end;
712
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]713 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]714 end = ptr + txn->req.sl.rq.u_l;
715
716 if (ptr >= end)
717 return NULL;
718
719 /* RFC2616, par. 5.1.2 :
720 * Request-URI = "*" | absuri | abspath | authority
721 */
722
723 if (*ptr == '*')
724 return NULL;
725
726 if (isalpha((unsigned char)*ptr)) {
727 /* this is a scheme as described by RFC3986, par. 3.1 */
728 ptr++;
729 while (ptr < end &&
730 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
731 ptr++;
732 /* skip '://' */
733 if (ptr == end || *ptr++ != ':')
734 return NULL;
735 if (ptr == end || *ptr++ != '/')
736 return NULL;
737 if (ptr == end || *ptr++ != '/')
738 return NULL;
739 }
740 /* skip [user[:passwd]@]host[:[port]] */
741
742 while (ptr < end && *ptr != '/')
743 ptr++;
744
745 if (ptr == end)
746 return NULL;
747
748 /* OK, we got the '/' ! */
749 return ptr;
750}
751
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]752/* Returns a 302 for a redirectable request. This may only be called just after
753 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
754 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]755 * NOTE: this function is designed to support being called once data are scheduled
756 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]757 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]758void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759{
760 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]761 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]762 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]763 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]764
765 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]766 trash.len = strlen(HTTP_302);
767 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]768
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]769 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]770
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]771 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]772 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]773 return;
774
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]775 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]776 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]777 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
778 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]779 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]780
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]781 /* 3: add the request URI. Since it was already forwarded, we need
782 * to temporarily rewind the buffer.
783 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]784 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]785 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]786
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]787 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]788 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]789
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]790 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]791
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 if (!path)
793 return;
794
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]795 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]796 return;
797
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]798 memcpy(trash.str + trash.len, path, len);
799 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]800
801 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]802 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
803 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]804 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]805 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
806 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]807 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]808
809 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]810 si_shutr(si);
811 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]812 si->err_type = SI_ET_NONE;
813 si->err_loc = NULL;
814 si->state = SI_ST_CLO;
815
816 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]817 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]818
819 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]820 if (srv)
821 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]822}
823
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]824/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]825 * that the server side is closed. Note that err_type is actually a
826 * bitmask, where almost only aborts may be cumulated with other
827 * values. We consider that aborted operations are more important
828 * than timeouts or errors due to the fact that nobody else in the
829 * logs might explain incomplete retries. All others should avoid
830 * being cumulated. It should normally not be possible to have multiple
831 * aborts at once, but just in case, the first one in sequence is reported.
832 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]833void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]834{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]835 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]836
837 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]838 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]839 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]840 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]841 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]842 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]843 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]844 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]845 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]846 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]847 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]848 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]849 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]850 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]851 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]852 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]853 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]854 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]855 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]856 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]857 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]858}
859
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]860extern const char sess_term_cond[8];
861extern const char sess_fin_state[8];
862extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]863struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]864struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]865struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]866
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]867/*
868 * Capture headers from message starting at <som> according to header list
869 * <cap_hdr>, and fill the <idx> structure appropriately.
870 */
871void capture_headers(char *som, struct hdr_idx *idx,
872 char **cap, struct cap_hdr *cap_hdr)
873{
874 char *eol, *sol, *col, *sov;
875 int cur_idx;
876 struct cap_hdr *h;
877 int len;
878
879 sol = som + hdr_idx_first_pos(idx);
880 cur_idx = hdr_idx_first_idx(idx);
881
882 while (cur_idx) {
883 eol = sol + idx->v[cur_idx].len;
884
885 col = sol;
886 while (col < eol && *col != ':')
887 col++;
888
889 sov = col + 1;
890 while (sov < eol && http_is_lws[(unsigned char)*sov])
891 sov++;
892
893 for (h = cap_hdr; h; h = h->next) {
894 if ((h->namelen == col - sol) &&
895 (strncasecmp(sol, h->name, h->namelen) == 0)) {
896 if (cap[h->index] == NULL)
897 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]898 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]899
900 if (cap[h->index] == NULL) {
901 Alert("HTTP capture : out of memory.\n");
902 continue;
903 }
904
905 len = eol - sov;
906 if (len > h->len)
907 len = h->len;
908
909 memcpy(cap[h->index], sov, len);
910 cap[h->index][len]=0;
911 }
912 }
913 sol = eol + idx->v[cur_idx].cr + 1;
914 cur_idx = idx->v[cur_idx].next;
915 }
916}
917
918
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]919/* either we find an LF at <ptr> or we jump to <bad>.
920 */
921#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
922
923/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
924 * otherwise to <http_msg_ood> with <state> set to <st>.
925 */
926#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
927 ptr++; \
928 if (likely(ptr < end)) \
929 goto good; \
930 else { \
931 state = (st); \
932 goto http_msg_ood; \
933 } \
934 } while (0)
935
936
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]938 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]939 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
940 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
941 * will give undefined results.
942 * Note that it is upon the caller's responsibility to ensure that ptr < end,
943 * and that msg->sol points to the beginning of the response.
944 * If a complete line is found (which implies that at least one CR or LF is
945 * found before <end>, the updated <ptr> is returned, otherwise NULL is
946 * returned indicating an incomplete line (which does not mean that parts have
947 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
948 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
949 * upon next call.
950 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]951 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]952 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
953 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]954 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]955 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]956const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]957 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]958 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]959{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]960 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]961
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]962 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]963 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]964 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]965 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]966 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
967
968 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]969 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]970 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
971 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]972 state = HTTP_MSG_ERROR;
973 break;
974
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]976 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]977 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]978 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]979 goto http_msg_rpcode;
980 }
981 if (likely(HTTP_IS_SPHT(*ptr)))
982 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
983 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]984 state = HTTP_MSG_ERROR;
985 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]986
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]987 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]988 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]989 if (likely(!HTTP_IS_LWS(*ptr)))
990 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
991
992 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]993 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]994 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
995 }
996
997 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]998 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]999 http_msg_rsp_reason:
1000 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1001 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1002 msg->sl.st.r_l = 0;
1003 goto http_msg_rpline_eol;
1004
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1005 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1006 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1007 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1008 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1009 goto http_msg_rpreason;
1010 }
1011 if (likely(HTTP_IS_SPHT(*ptr)))
1012 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1013 /* so it's a CR/LF, so there is no reason phrase */
1014 goto http_msg_rsp_reason;
1015
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1016 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1017 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1018 if (likely(!HTTP_IS_CRLF(*ptr)))
1019 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1020 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1021 http_msg_rpline_eol:
1022 /* We have seen the end of line. Note that we do not
1023 * necessarily have the \n yet, but at least we know that we
1024 * have EITHER \r OR \n, otherwise the response would not be
1025 * complete. We can then record the response length and return
1026 * to the caller which will be able to register it.
1027 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1028 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1029 return ptr;
1030
1031#ifdef DEBUG_FULL
1032 default:
1033 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1034 exit(1);
1035#endif
1036 }
1037
1038 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1039 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1040 if (ret_state)
1041 *ret_state = state;
1042 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1043 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1044 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045}
1046
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1047/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1048 * This function parses a request line between <ptr> and <end>, starting with
1049 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1050 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1051 * will give undefined results.
1052 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1053 * and that msg->sol points to the beginning of the request.
1054 * If a complete line is found (which implies that at least one CR or LF is
1055 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1056 * returned indicating an incomplete line (which does not mean that parts have
1057 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1058 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1059 * upon next call.
1060 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1061 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1062 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1063 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1064 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1065 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1066const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1067 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1068 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1069{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1070 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1071
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1074 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 if (likely(HTTP_IS_TOKEN(*ptr)))
1076 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1079 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1081 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1082
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1083 if (likely(HTTP_IS_CRLF(*ptr))) {
1084 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1085 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1086 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1087 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1089 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1090 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1091 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1092 msg->sl.rq.v_l = 0;
1093 goto http_msg_rqline_eol;
1094 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1095 state = HTTP_MSG_ERROR;
1096 break;
1097
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1099 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1100 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1101 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1102 goto http_msg_rquri;
1103 }
1104 if (likely(HTTP_IS_SPHT(*ptr)))
1105 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1106 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1107 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1108
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1109 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1110 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1111 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1112 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1115 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1116 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1117 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1118
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1119 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1120 /* non-ASCII chars are forbidden unless option
1121 * accept-invalid-http-request is enabled in the frontend.
1122 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1123 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1124 if (msg->err_pos < -1)
1125 goto invalid_char;
1126 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1127 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1128 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1129 }
1130
1131 if (likely(HTTP_IS_CRLF(*ptr))) {
1132 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1133 goto http_msg_req09_uri_e;
1134 }
1135
1136 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1137 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1138 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1139 state = HTTP_MSG_ERROR;
1140 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1141
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1142 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1143 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1144 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1145 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1146 goto http_msg_rqver;
1147 }
1148 if (likely(HTTP_IS_SPHT(*ptr)))
1149 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1150 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1151 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1152
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1153 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1154 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1155 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1157
1158 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1159 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1160 http_msg_rqline_eol:
1161 /* We have seen the end of line. Note that we do not
1162 * necessarily have the \n yet, but at least we know that we
1163 * have EITHER \r OR \n, otherwise the request would not be
1164 * complete. We can then record the request length and return
1165 * to the caller which will be able to register it.
1166 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1167 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1168 return ptr;
1169 }
1170
1171 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1172 state = HTTP_MSG_ERROR;
1173 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1174
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1175#ifdef DEBUG_FULL
1176 default:
1177 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1178 exit(1);
1179#endif
1180 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1181
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1183 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 if (ret_state)
1185 *ret_state = state;
1186 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1187 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1188 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1190
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1191/*
1192 * Returns the data from Authorization header. Function may be called more
1193 * than once so data is stored in txn->auth_data. When no header is found
1194 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1195 * searching again for something we are unable to find anyway.
1196 */
1197
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1198char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1199
1200int
1201get_http_auth(struct session *s)
1202{
1203
1204 struct http_txn *txn = &s->txn;
1205 struct chunk auth_method;
1206 struct hdr_ctx ctx;
1207 char *h, *p;
1208 int len;
1209
1210#ifdef DEBUG_AUTH
1211 printf("Auth for session %p: %d\n", s, txn->auth.method);
1212#endif
1213
1214 if (txn->auth.method == HTTP_AUTH_WRONG)
1215 return 0;
1216
1217 if (txn->auth.method)
1218 return 1;
1219
1220 txn->auth.method = HTTP_AUTH_WRONG;
1221
1222 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1223
1224 if (txn->flags & TX_USE_PX_CONN) {
1225 h = "Proxy-Authorization";
1226 len = strlen(h);
1227 } else {
1228 h = "Authorization";
1229 len = strlen(h);
1230 }
1231
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1232 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1233 return 0;
1234
1235 h = ctx.line + ctx.val;
1236
1237 p = memchr(h, ' ', ctx.vlen);
1238 if (!p || p == h)
1239 return 0;
1240
1241 chunk_initlen(&auth_method, h, 0, p-h);
1242 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1243
1244 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1245
1246 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1247 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1248
1249 if (len < 0)
1250 return 0;
1251
1252
1253 get_http_auth_buff[len] = '\0';
1254
1255 p = strchr(get_http_auth_buff, ':');
1256
1257 if (!p)
1258 return 0;
1259
1260 txn->auth.user = get_http_auth_buff;
1261 *p = '\0';
1262 txn->auth.pass = p+1;
1263
1264 txn->auth.method = HTTP_AUTH_BASIC;
1265 return 1;
1266 }
1267
1268 return 0;
1269}
1270
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1271
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1272/*
1273 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1274 * depending on the initial msg->msg_state. The caller is responsible for
1275 * ensuring that the message does not wrap. The function can be preempted
1276 * everywhere when data are missing and recalled at the exact same location
1277 * with no information loss. The message may even be realigned between two
1278 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1279 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1280 * fields. Note that msg->sol will be initialized after completing the first
1281 * state, so that none of the msg pointers has to be initialized prior to the
1282 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1283 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1284void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1285{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1286 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1287 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1288 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1289
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1290 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1291 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1292 ptr = buf->p + msg->next;
1293 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1294
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1295 if (unlikely(ptr >= end))
1296 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1297
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1298 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1299 /*
1300 * First, states that are specific to the response only.
1301 * We check them first so that request and headers are
1302 * closer to each other (accessed more often).
1303 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1304 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1305 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1306 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1307 /* we have a start of message, but we have to check
1308 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1309 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1310 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1311 if (unlikely(ptr != buf->p)) {
1312 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1313 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1314 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1315 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1316 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1317 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1318 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1319 hdr_idx_init(idx);
1320 state = HTTP_MSG_RPVER;
1321 goto http_msg_rpver;
1322 }
1323
1324 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1325 goto http_msg_invalid;
1326
1327 if (unlikely(*ptr == '\n'))
1328 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1329 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1330 /* stop here */
1331
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1333 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1334 EXPECT_LF_HERE(ptr, http_msg_invalid);
1335 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1336 /* stop here */
1337
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1338 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1339 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1340 case HTTP_MSG_RPVER_SP:
1341 case HTTP_MSG_RPCODE:
1342 case HTTP_MSG_RPCODE_SP:
1343 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1344 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1345 state, ptr, end,
1346 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1347 if (unlikely(!ptr))
1348 return;
1349
1350 /* we have a full response and we know that we have either a CR
1351 * or an LF at <ptr>.
1352 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1354
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1355 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 if (likely(*ptr == '\r'))
1357 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1358 goto http_msg_rpline_end;
1359
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1360 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1361 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 /* msg->sol must point to the first of CR or LF. */
1363 EXPECT_LF_HERE(ptr, http_msg_invalid);
1364 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1365 /* stop here */
1366
1367 /*
1368 * Second, states that are specific to the request only
1369 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1371 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1372 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1373 /* we have a start of message, but we have to check
1374 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1375 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1376 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1377 if (likely(ptr != buf->p)) {
1378 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1379 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1380 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1381 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1383 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1384 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1385 state = HTTP_MSG_RQMETH;
1386 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1387 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1390 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1391
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 if (unlikely(*ptr == '\n'))
1393 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1394 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1395 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1398 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1399 EXPECT_LF_HERE(ptr, http_msg_invalid);
1400 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1401 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1402
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1403 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1404 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1405 case HTTP_MSG_RQMETH_SP:
1406 case HTTP_MSG_RQURI:
1407 case HTTP_MSG_RQURI_SP:
1408 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1409 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1410 state, ptr, end,
1411 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 if (unlikely(!ptr))
1413 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1414
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1415 /* we have a full request and we know that we have either a CR
1416 * or an LF at <ptr>.
1417 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1419
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1420 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1421 if (likely(*ptr == '\r'))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1426 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 /* check for HTTP/0.9 request : no version information available.
1428 * msg->sol must point to the first of CR or LF.
1429 */
1430 if (unlikely(msg->sl.rq.v_l == 0))
1431 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1432
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 EXPECT_LF_HERE(ptr, http_msg_invalid);
1434 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1435 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1436
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 /*
1438 * Common states below
1439 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1441 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1442 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1443 if (likely(!HTTP_IS_CRLF(*ptr))) {
1444 goto http_msg_hdr_name;
1445 }
1446
1447 if (likely(*ptr == '\r'))
1448 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1449 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1450
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1451 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1452 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1453 /* assumes msg->sol points to the first char */
1454 if (likely(HTTP_IS_TOKEN(*ptr)))
1455 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1456
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1457 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1459
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1460 if (likely(msg->err_pos < -1) || *ptr == '\n')
1461 goto http_msg_invalid;
1462
1463 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1464 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1465
1466 /* and we still accept this non-token character */
1467 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1468
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1469 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1470 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1471 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1472 if (likely(HTTP_IS_SPHT(*ptr)))
1473 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1474
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1475 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1476 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1477
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 if (likely(!HTTP_IS_CRLF(*ptr))) {
1479 goto http_msg_hdr_val;
1480 }
1481
1482 if (likely(*ptr == '\r'))
1483 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1484 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1485
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1487 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 EXPECT_LF_HERE(ptr, http_msg_invalid);
1489 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1492 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 if (likely(HTTP_IS_SPHT(*ptr))) {
1494 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1495 for (; buf->p + msg->sov < ptr; msg->sov++)
1496 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 goto http_msg_hdr_l1_sp;
1498 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1499 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1500 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 goto http_msg_complete_header;
1502
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1504 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1505 /* assumes msg->sol points to the first char, and msg->sov
1506 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 */
1508 if (likely(!HTTP_IS_CRLF(*ptr)))
1509 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1510
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1511 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 /* Note: we could also copy eol into ->eoh so that we have the
1513 * real header end in case it ends with lots of LWS, but is this
1514 * really needed ?
1515 */
1516 if (likely(*ptr == '\r'))
1517 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1518 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1521 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 EXPECT_LF_HERE(ptr, http_msg_invalid);
1523 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1524
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1526 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1528 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1529 for (; buf->p + msg->eol < ptr; msg->eol++)
1530 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 goto http_msg_hdr_val;
1532 }
1533 http_msg_complete_header:
1534 /*
1535 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1536 * Assumes msg->sol points to the first char, msg->sov points
1537 * to the first character of the value and msg->eol to the
1538 * first CR or LF so we know how the line ends. We insert last
1539 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1540 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1541 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 idx, idx->tail) < 0))
1543 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1544
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1545 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 if (likely(!HTTP_IS_CRLF(*ptr))) {
1547 goto http_msg_hdr_name;
1548 }
1549
1550 if (likely(*ptr == '\r'))
1551 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1552 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1553
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1555 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 /* Assumes msg->sol points to the first of either CR or LF */
1557 EXPECT_LF_HERE(ptr, http_msg_invalid);
1558 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1559 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1560 msg->eoh = msg->sol;
1561 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1562 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1563 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1564
1565 case HTTP_MSG_ERROR:
1566 /* this may only happen if we call http_msg_analyser() twice with an error */
1567 break;
1568
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569#ifdef DEBUG_FULL
1570 default:
1571 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1572 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1573#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 }
1575 http_msg_ood:
1576 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1577 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1578 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 http_msg_invalid:
1582 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1583 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1584 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 return;
1586}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1587
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1588/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1589 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1590 * nothing is done and 1 is returned.
1591 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1592static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1593{
1594 int delta;
1595 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1596 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1597
1598 if (msg->sl.rq.v_l != 0)
1599 return 1;
1600
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1601 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1602 delta = 0;
1603
1604 if (msg->sl.rq.u_l == 0) {
1605 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1606 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1607 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1608 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1609 }
1610 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1611 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1612 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1613 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1614 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1615 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1616 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1617 NULL, NULL);
1618 if (unlikely(!cur_end))
1619 return 0;
1620
1621 /* we have a full HTTP/1.0 request now and we know that
1622 * we have either a CR or an LF at <ptr>.
1623 */
1624 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1625 return 1;
1626}
1627
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1628/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1629 * and "keep-alive" values. If we already know that some headers may safely
1630 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1631 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1632 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1633 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1634 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1635 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1636 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1637 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1638 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1639void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1640{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1641 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1642 const char *hdr_val = "Connection";
1643 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1644
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1645 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1646 return;
1647
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1648 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1649 hdr_val = "Proxy-Connection";
1650 hdr_len = 16;
1651 }
1652
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1653 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1654 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1655 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1656 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1657 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1658 if (to_del & 2)
1659 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1660 else
1661 txn->flags |= TX_CON_KAL_SET;
1662 }
1663 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1664 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1665 if (to_del & 1)
1666 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1667 else
1668 txn->flags |= TX_CON_CLO_SET;
1669 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1670 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1671 txn->flags |= TX_HDR_CONN_UPG;
1672 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1673 }
1674
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1675 txn->flags |= TX_HDR_CONN_PRS;
1676 return;
1677}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1678
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1679/* Apply desired changes on the Connection: header. Values may be removed and/or
1680 * added depending on the <wanted> flags, which are exclusively composed of
1681 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1682 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1683 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1684void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1685{
1686 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1687 const char *hdr_val = "Connection";
1688 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1689
1690 ctx.idx = 0;
1691
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1692
1693 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1694 hdr_val = "Proxy-Connection";
1695 hdr_len = 16;
1696 }
1697
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1698 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1699 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1700 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1701 if (wanted & TX_CON_KAL_SET)
1702 txn->flags |= TX_CON_KAL_SET;
1703 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1704 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1705 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1706 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1707 if (wanted & TX_CON_CLO_SET)
1708 txn->flags |= TX_CON_CLO_SET;
1709 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1710 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1711 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1712 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1713
1714 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1715 return;
1716
1717 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1718 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1719 hdr_val = "Connection: close";
1720 hdr_len = 17;
1721 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1722 hdr_val = "Proxy-Connection: close";
1723 hdr_len = 23;
1724 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1725 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1726 }
1727
1728 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1729 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1730 hdr_val = "Connection: keep-alive";
1731 hdr_len = 22;
1732 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1733 hdr_val = "Proxy-Connection: keep-alive";
1734 hdr_len = 28;
1735 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1736 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1737 }
1738 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1739}
1740
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1741/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1742 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1743 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1744 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1745 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1746 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1747static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1748{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1749 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1750 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1751 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1752 const char *end = buf->data + buf->size;
1753 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1754 unsigned int chunk = 0;
1755
1756 /* The chunk size is in the following form, though we are only
1757 * interested in the size and CRLF :
1758 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1759 */
1760 while (1) {
1761 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1762 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1763 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1764 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1765 if (c < 0) /* not a hex digit anymore */
1766 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1767 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1768 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1769 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1770 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1771 chunk = (chunk << 4) + c;
1772 }
1773
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1774 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1775 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1776 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1777
1778 while (http_is_spht[(unsigned char)*ptr]) {
1779 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1780 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1781 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1782 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 }
1784
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1785 /* Up to there, we know that at least one byte is present at *ptr. Check
1786 * for the end of chunk size.
1787 */
1788 while (1) {
1789 if (likely(HTTP_IS_CRLF(*ptr))) {
1790 /* we now have a CR or an LF at ptr */
1791 if (likely(*ptr == '\r')) {
1792 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1793 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1794 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1795 return 0;
1796 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1797
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1798 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1799 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1800 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1801 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1802 /* done */
1803 break;
1804 }
1805 else if (*ptr == ';') {
1806 /* chunk extension, ends at next CRLF */
1807 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1808 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1809 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1810 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1811
1812 while (!HTTP_IS_CRLF(*ptr)) {
1813 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1814 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1815 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1816 return 0;
1817 }
1818 /* we have a CRLF now, loop above */
1819 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1820 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1821 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1822 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1823 }
1824
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1825 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1826 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1827 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1828 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1829 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1830 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1831 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1832 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1833 msg->chunk_len = chunk;
1834 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1835 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1836 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1837 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1838 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1839 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1840}
1841
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1842/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1843 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1844 * the trailers is found, it is automatically scheduled to be forwarded,
1845 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1846 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1847 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1848 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1849 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1850 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1851 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1852 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1853 * matches the length of trailers already parsed and not forwarded. It is also
1854 * important to note that this function is designed to be able to parse wrapped
1855 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1856 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1857static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1859 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1860
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1861 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1862 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1863 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 const char *ptr = b_ptr(buf, msg->next);
1865 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1866 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1867
1868 /* scan current line and stop at LF or CRLF */
1869 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1870 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1871 return 0;
1872
1873 if (*ptr == '\n') {
1874 if (!p1)
1875 p1 = ptr;
1876 p2 = ptr;
1877 break;
1878 }
1879
1880 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1881 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1882 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1883 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1884 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1885 p1 = ptr;
1886 }
1887
1888 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1889 if (ptr >= buf->data + buf->size)
1890 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1891 }
1892
1893 /* after LF; point to beginning of next line */
1894 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1895 if (p2 >= buf->data + buf->size)
1896 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1897
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1899 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1900 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1901
1902 /* schedule this line for forwarding */
1903 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1904 if (msg->sov >= buf->size)
1905 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1906
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1907 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1908 /* LF/CRLF at beginning of line => end of trailers at p2.
1909 * Everything was scheduled for forwarding, there's nothing
1910 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1911 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1912 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1913 msg->msg_state = HTTP_MSG_DONE;
1914 return 1;
1915 }
1916 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1917 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1918 }
1919}
1920
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1921/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1922 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1923 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1924 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1925 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1926 * not enough data are available, the function does not change anything and
1927 * returns zero. If a parse error is encountered, the function returns < 0 and
1928 * does not change anything. Note: this function is designed to parse wrapped
1929 * CRLF at the end of the buffer.
1930 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1931static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1932{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1933 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1934 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1935 int bytes;
1936
1937 /* NB: we'll check data availabilty at the end. It's not a
1938 * problem because whatever we match first will be checked
1939 * against the correct length.
1940 */
1941 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1942 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1943 if (*ptr == '\r') {
1944 bytes++;
1945 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1946 if (ptr >= buf->data + buf->size)
1947 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1948 }
1949
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1950 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951 return 0;
1952
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1953 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1954 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1956 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1957
1958 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1959 if (ptr >= buf->data + buf->size)
1960 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1961 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1962 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1963 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1964 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1965 return 1;
1966}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1967
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1968
1969/*
1970 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1971 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1972int select_compression_request_header(struct session *s, struct buffer *req)
1973{
1974 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1975 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1976 struct hdr_ctx ctx;
1977 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1978 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1979
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1980 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1981 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1982 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1983 */
1984 ctx.idx = 0;
1985 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1986 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1987 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
1988 (ctx.vlen < 31 ||
1989 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
1990 ctx.line[ctx.val + 30] < '6' ||
1991 (ctx.line[ctx.val + 30] == '6' &&
1992 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
1993 s->comp_algo = NULL;
1994 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1995 }
1996
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1997 ctx.idx = 0;
1998 /* no compression when Cache-Control: no-transform found */
1999 while (http_find_header2("Cache-Control", 13, req->p, &txn->hdr_idx, &ctx)) {
2000 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12)) {
2001 s->comp_algo = NULL;
2002 return 0;
2003 }
2004 }
2005
2006 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2007 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2008 ctx.idx = 0;
2009 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2010 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2011 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2012 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2013
2014 /* remove all occurrences of the header when "compression offload" is set */
2015
2016 if ((s->be->comp && s->be->comp->offload) ||
2017 (s->fe->comp && s->fe->comp->offload)) {
2018 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2019 ctx.idx = 0;
2020 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2021 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2022 }
2023 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2024 return 1;
2025 }
2026 }
2027 }
2028 }
2029
2030 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2031 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2032 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2033 if (comp_algo->add_data == identity_add_data) {
2034 s->comp_algo = comp_algo;
2035 return 1;
2036 }
2037 }
2038 }
2039
2040 s->comp_algo = NULL;
2041
2042 return 0;
2043}
2044
2045/*
2046 * Selects a comression algorithm depending of the server response.
2047 */
2048int select_compression_response_header(struct session *s, struct buffer *res)
2049{
2050 struct http_txn *txn = &s->txn;
2051 struct http_msg *msg = &txn->rsp;
2052 struct hdr_ctx ctx;
2053 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2054
2055 /* no common compression algorithm was found in request header */
2056 if (s->comp_algo == NULL)
2057 goto fail;
2058
2059 /* HTTP < 1.1 should not be compressed */
2060 if (!(msg->flags & HTTP_MSGF_VER_11))
2061 goto fail;
2062
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2063 /* 200 only */
2064 if (txn->status != 200)
2065 goto fail;
2066
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2067 /* Content-Length is null */
2068 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2069 goto fail;
2070
2071 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2072 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2073 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2074 goto fail;
2075
2076 comp_type = NULL;
2077
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2078 /* we don't want to compress multipart content-types, nor content-types that are
2079 * not listed in the "compression type" directive if any. If no content-type was
2080 * found but configuration requires one, we don't compress either. Backend has
2081 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2082 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2083 ctx.idx = 0;
2084 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2085 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2086 goto fail;
2087
2088 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2089 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2090 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2091 if (ctx.vlen >= comp_type->name_len &&
2092 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2093 /* this Content-Type should be compressed */
2094 break;
2095 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2096 /* this Content-Type should not be compressed */
2097 if (comp_type == NULL)
2098 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2099 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2100 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2101 else { /* no content-type header */
2102 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2103 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2104 }
2105
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2106 /* limit compression rate */
2107 if (global.comp_rate_lim > 0)
2108 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2109 goto fail;
2110
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2111 /* limit cpu usage */
2112 if (idle_pct < compress_min_idle)
2113 goto fail;
2114
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2115 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2116 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2117 goto fail;
2118
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2119 s->flags |= SN_COMP_READY;
2120
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2121 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2122 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2123 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2124 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2125
2126 /* add Transfer-Encoding header */
2127 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2128 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2129
2130 /*
2131 * Add Content-Encoding header when it's not identity encoding.
2132 * RFC 2616 : Identity encoding: This content-coding is used only in the
2133 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2134 * header.
2135 */
2136 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2137 trash.len = 18;
2138 memcpy(trash.str, "Content-Encoding: ", trash.len);
2139 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2140 trash.len += s->comp_algo->name_len;
2141 trash.str[trash.len] = '\0';
2142 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2143 }
2144
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2145 return 1;
2146
2147fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2148 if (s->flags & SN_COMP_READY)
William Lallemand1c2d6222012-10-30 15:52:53 +0100[diff] [blame]2149 s->comp_algo->end(&s->comp_ctx);
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2150 s->comp_algo = NULL;
2151 s->flags &= ~SN_COMP_READY;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2152 return 0;
2153}
2154
2155
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2156/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2157 * processing can continue on next analysers, or zero if it either needs more
2158 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2159 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2160 * when it has nothing left to do, and may remove any analyser when it wants to
2161 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2162 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2163int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2164{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2165 /*
2166 * We will parse the partial (or complete) lines.
2167 * We will check the request syntax, and also join multi-line
2168 * headers. An index of all the lines will be elaborated while
2169 * parsing.
2170 *
2171 * For the parsing, we use a 28 states FSM.
2172 *
2173 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2174 * req->buf->p = beginning of request
2175 * req->buf->p + msg->eoh = end of processed headers / start of current one
2176 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2177 * msg->eol = end of current header or line (LF or CRLF)
2178 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2179 *
2180 * At end of parsing, we may perform a capture of the error (if any), and
2181 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2182 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2183 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2184 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2185
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2186 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2187 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2188 struct http_txn *txn = &s->txn;
2189 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2190 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2191
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2192 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2193 now_ms, __FUNCTION__,
2194 s,
2195 req,
2196 req->rex, req->wex,
2197 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2198 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2199 req->analysers);
2200
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2201 /* we're speaking HTTP here, so let's speak HTTP to the client */
2202 s->srv_error = http_return_srv_error;
2203
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2204 /* There's a protected area at the end of the buffer for rewriting
2205 * purposes. We don't want to start to parse the request if the
2206 * protected area is affected, because we may have to move processed
2207 * data later, which is much more complicated.
2208 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2209 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2210 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2211 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2212 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2213 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2214 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2215 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2216 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2217 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2218 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2219 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2220 return 0;
2221 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2222 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2223 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2224 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2225 }
2226
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2227 /* Note that we have the same problem with the response ; we
2228 * may want to send a redirect, error or anything which requires
2229 * some spare space. So we'll ensure that we have at least
2230 * maxrewrite bytes available in the response buffer before
2231 * processing that one. This will only affect pipelined
2232 * keep-alive requests.
2233 */
2234 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2235 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2236 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2237 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2238 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2239 if (s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2240 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2241 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2242 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2243 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2244 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2245 return 0;
2246 }
2247 }
2248
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2249 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2250 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2251 }
2252
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2253 /* 1: we might have to print this header in debug mode */
2254 if (unlikely((global.mode & MODE_DEBUG) &&
2255 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2256 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2257 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2258
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2259 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2260 /* this is a bit complex : in case of error on the request line,
2261 * we know that rq.l is still zero, so we display only the part
2262 * up to the end of the line (truncated by debug_hdr).
2263 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2264 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2266
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 sol += hdr_idx_first_pos(&txn->hdr_idx);
2268 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2269
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2270 while (cur_idx) {
2271 eol = sol + txn->hdr_idx.v[cur_idx].len;
2272 debug_hdr("clihdr", s, sol, eol);
2273 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2274 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2275 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2276 }
2277
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2278
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2279 /*
2280 * Now we quickly check if we have found a full valid request.
2281 * If not so, we check the FD and buffer states before leaving.
2282 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2283 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2284 * requests are checked first. When waiting for a second request
2285 * on a keep-alive session, if we encounter and error, close, t/o,
2286 * we note the error in the session flags but don't set any state.
2287 * Since the error will be noted there, it will not be counted by
2288 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2289 * Last, we may increase some tracked counters' http request errors on
2290 * the cases that are deliberately the client's fault. For instance,
2291 * a timeout or connection reset is not counted as an error. However
2292 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2293 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2294
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2295 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2296 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2297 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2298 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2299 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2300 session_inc_http_req_ctr(s);
2301 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2302 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2303 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2304 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2305
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2306 /* 1: Since we are in header mode, if there's no space
2307 * left for headers, we won't be able to free more
2308 * later, so the session will never terminate. We
2309 * must terminate it now.
2310 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2311 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2312 /* FIXME: check if URI is set and return Status
2313 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2314 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2315 session_inc_http_req_ctr(s);
2316 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2317 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2318 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2319 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 goto return_bad_req;
2321 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2322
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2323 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2324 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2325 if (!(s->flags & SN_ERR_MASK))
2326 s->flags |= SN_ERR_CLICL;
2327
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2328 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2329 goto failed_keep_alive;
2330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2332 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2333 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2334 session_inc_http_err_ctr(s);
2335 }
2336
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2337 txn->status = 400;
2338 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2339 msg->msg_state = HTTP_MSG_ERROR;
2340 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2341
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2342 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2343 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2344 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2345 if (s->listener->counters)
2346 s->listener->counters->failed_req++;
2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 if (!(s->flags & SN_FINST_MASK))
2349 s->flags |= SN_FINST_R;
2350 return 0;
2351 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2352
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2354 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2355 if (!(s->flags & SN_ERR_MASK))
2356 s->flags |= SN_ERR_CLITO;
2357
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2358 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2359 goto failed_keep_alive;
2360
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2361 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2362 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2363 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2364 session_inc_http_err_ctr(s);
2365 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2366 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2367 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2368 msg->msg_state = HTTP_MSG_ERROR;
2369 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2370
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2371 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2372 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2373 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2374 if (s->listener->counters)
2375 s->listener->counters->failed_req++;
2376
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2377 if (!(s->flags & SN_FINST_MASK))
2378 s->flags |= SN_FINST_R;
2379 return 0;
2380 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2381
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2382 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2383 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2384 if (!(s->flags & SN_ERR_MASK))
2385 s->flags |= SN_ERR_CLICL;
2386
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2387 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2388 goto failed_keep_alive;
2389
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2390 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2391 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2392 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2393 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2394 msg->msg_state = HTTP_MSG_ERROR;
2395 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2396
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2397 session_inc_http_err_ctr(s);
2398 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2399 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2400 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2401 if (s->listener->counters)
2402 s->listener->counters->failed_req++;
2403
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2404 if (!(s->flags & SN_FINST_MASK))
2405 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2406 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2407 }
2408
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2409 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2410 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2411 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2412#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2413 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2414 /* We need more data, we have to re-enable quick-ack in case we
2415 * previously disabled it, otherwise we might cause the client
2416 * to delay next data.
2417 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2418 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2419 }
2420#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2421
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2422 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2423 /* If the client starts to talk, let's fall back to
2424 * request timeout processing.
2425 */
2426 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2427 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2428 }
2429
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2430 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2431 if (!tick_isset(req->analyse_exp)) {
2432 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2433 (txn->flags & TX_WAIT_NEXT_RQ) &&
2434 tick_isset(s->be->timeout.httpka))
2435 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2436 else
2437 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2438 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2439
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2440 /* we're not ready yet */
2441 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2442
2443 failed_keep_alive:
2444 /* Here we process low-level errors for keep-alive requests. In
2445 * short, if the request is not the first one and it experiences
2446 * a timeout, read error or shutdown, we just silently close so
2447 * that the client can try again.
2448 */
2449 txn->status = 0;
2450 msg->msg_state = HTTP_MSG_RQBEFORE;
2451 req->analysers = 0;
2452 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2453 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2454 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2455 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2456 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2457
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2458 /* OK now we have a complete HTTP request with indexed headers. Let's
2459 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2460 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2461 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2462 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2463 * byte after the last LF. msg->sov points to the first byte of data.
2464 * msg->eol cannot be trusted because it may have been left uninitialized
2465 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2466 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2467
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2468 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2469 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2470
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2471 if (txn->flags & TX_WAIT_NEXT_RQ) {
2472 /* kill the pending keep-alive timeout */
2473 txn->flags &= ~TX_WAIT_NEXT_RQ;
2474 req->analyse_exp = TICK_ETERNITY;
2475 }
2476
2477
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2478 /* Maybe we found in invalid header name while we were configured not
2479 * to block on that, so we have to capture it now.
2480 */
2481 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2482 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2483
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2484 /*
2485 * 1: identify the method
2486 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2487 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2488
2489 /* we can make use of server redirect on GET and HEAD */
2490 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2491 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2492
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2493 /*
2494 * 2: check if the URI matches the monitor_uri.
2495 * We have to do this for every request which gets in, because
2496 * the monitor-uri is defined by the frontend.
2497 */
2498 if (unlikely((s->fe->monitor_uri_len != 0) &&
2499 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2500 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2501 s->fe->monitor_uri,
2502 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2503 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2504 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2505 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2506 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2508 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2509 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2510
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2511 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2512 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2513 int ret = acl_exec_cond(cond, s->fe, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2514
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2515 ret = acl_pass(ret);
2516 if (cond->pol == ACL_COND_UNLESS)
2517 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 if (ret) {
2520 /* we fail this request, let's return 503 service unavail */
2521 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2522 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2524 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2525 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2526
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2527 /* nothing to fail, let's reply normaly */
2528 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2529 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2530 goto return_prx_cond;
2531 }
2532
2533 /*
2534 * 3: Maybe we have to copy the original REQURI for the logs ?
2535 * Note: we cannot log anymore if the request has been
2536 * classified as invalid.
2537 */
2538 if (unlikely(s->logs.logwait & LW_REQ)) {
2539 /* we have a complete HTTP request that we must log */
2540 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2541 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2542
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2543 if (urilen >= REQURI_LEN)
2544 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2545 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2547
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2548 if (!(s->logs.logwait &= ~LW_REQ))
2549 s->do_log(s);
2550 } else {
2551 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2552 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2554
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2555 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2556 s->unique_id = pool_alloc2(pool2_uniqueid);
2557 }
2558
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2560 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2561 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2562
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2563 /* ... and check if the request is HTTP/1.1 or above */
2564 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2565 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2566 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2567 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2568 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2569
2570 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2571 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2572
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2573 /* if the frontend has "option http-use-proxy-header", we'll check if
2574 * we have what looks like a proxied connection instead of a connection,
2575 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2576 * Note that this is *not* RFC-compliant, however browsers and proxies
2577 * happen to do that despite being non-standard :-(
2578 * We consider that a request not beginning with either '/' or '*' is
2579 * a proxied connection, which covers both "scheme://location" and
2580 * CONNECT ip:port.
2581 */
2582 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2583 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2584 txn->flags |= TX_USE_PX_CONN;
2585
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2586 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2587 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2588
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2589 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2590 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2591 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2592 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2593
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2594 /* 6: determine the transfer-length.
2595 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2596 * the presence of a message-body in a REQUEST and its transfer length
2597 * must be determined that way (in order of precedence) :
2598 * 1. The presence of a message-body in a request is signaled by the
2599 * inclusion of a Content-Length or Transfer-Encoding header field
2600 * in the request's header fields. When a request message contains
2601 * both a message-body of non-zero length and a method that does
2602 * not define any semantics for that request message-body, then an
2603 * origin server SHOULD either ignore the message-body or respond
2604 * with an appropriate error message (e.g., 413). A proxy or
2605 * gateway, when presented the same request, SHOULD either forward
2606 * the request inbound with the message- body or ignore the
2607 * message-body when determining a response.
2608 *
2609 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2610 * and the "chunked" transfer-coding (Section 6.2) is used, the
2611 * transfer-length is defined by the use of this transfer-coding.
2612 * If a Transfer-Encoding header field is present and the "chunked"
2613 * transfer-coding is not present, the transfer-length is defined
2614 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2615 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2616 * 3. If a Content-Length header field is present, its decimal value in
2617 * OCTETs represents both the entity-length and the transfer-length.
2618 * If a message is received with both a Transfer-Encoding header
2619 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2620 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2621 * 4. By the server closing the connection. (Closing the connection
2622 * cannot be used to indicate the end of a request body, since that
2623 * would leave no possibility for the server to send back a response.)
2624 *
2625 * Whenever a transfer-coding is applied to a message-body, the set of
2626 * transfer-codings MUST include "chunked", unless the message indicates
2627 * it is terminated by closing the connection. When the "chunked"
2628 * transfer-coding is used, it MUST be the last transfer-coding applied
2629 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2630 */
2631
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2632 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2633 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2634 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2635 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2636 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2637 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2638 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2639 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2640 /* bad transfer-encoding (chunked followed by something else) */
2641 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2642 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2643 break;
2644 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2645 }
2646
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2647 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2648 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2649 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2650 signed long long cl;
2651
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2652 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2653 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2654 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2655 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2656
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2657 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2658 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2659 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2660 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2661
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2662 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2663 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2664 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2665 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2666
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2667 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2668 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2669 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2670 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2671
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2672 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2673 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2674 }
2675
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2676 /* bodyless requests have a known length */
2677 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2678 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2679
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2680 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2681 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2682 req->analyse_exp = TICK_ETERNITY;
2683 return 1;
2684
2685 return_bad_req:
2686 /* We centralize bad requests processing here */
2687 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2688 /* we detected a parsing error. We want to archive this request
2689 * in the dedicated proxy area for later troubleshooting.
2690 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2691 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2692 }
2693
2694 txn->req.msg_state = HTTP_MSG_ERROR;
2695 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2696 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2697
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2698 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2699 if (s->listener->counters)
2700 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2701
2702 return_prx_cond:
2703 if (!(s->flags & SN_ERR_MASK))
2704 s->flags |= SN_ERR_PRXCOND;
2705 if (!(s->flags & SN_FINST_MASK))
2706 s->flags |= SN_FINST_R;
2707
2708 req->analysers = 0;
2709 req->analyse_exp = TICK_ETERNITY;
2710 return 0;
2711}
2712
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2713/* We reached the stats page through a POST request.
2714 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2715 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2716 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2717int http_process_req_stat_post(struct stream_interface *si, struct http_txn *txn, struct channel *req)
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2718{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2719 struct proxy *px = NULL;
2720 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2721
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2722 char key[LINESIZE];
2723 int action = ST_ADM_ACTION_NONE;
2724 int reprocess = 0;
2725
2726 int total_servers = 0;
2727 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2728
2729 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2730 char *st_cur_param = NULL;
2731 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2732
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2733 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2734 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2735
2736 cur_param = next_param = end_params;
2737
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2738 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2739 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2740 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2741 return 1;
2742 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2743 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2744 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2745 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2746 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2747 }
2748
2749 *end_params = '\0';
2750
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2751 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2752
2753 /*
2754 * Parse the parameters in reverse order to only store the last value.
2755 * From the html form, the backend and the action are at the end.
2756 */
2757 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2758 char *value;
2759 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2760
2761 cur_param--;
2762 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2763 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2764 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2765 poffset = (cur_param != first_param ? 1 : 0);
2766 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2767 if ((plen > 0) && (plen <= sizeof(key))) {
2768 strncpy(key, cur_param + poffset, plen);
2769 key[plen - 1] = '\0';
2770 } else {
2771 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2772 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2773 }
2774
2775 /* Parse the value */
2776 value = key;
2777 while (*value != '\0' && *value != '=') {
2778 value++;
2779 }
2780 if (*value == '=') {
2781 /* Ok, a value is found, we can mark the end of the key */
2782 *value++ = '\0';
2783 }
2784
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2785 if (!url_decode(key) || !url_decode(value))
2786 break;
2787
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2788 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2789 if (!px && (strcmp(key, "b") == 0)) {
2790 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2791 /* the backend name is unknown or ambiguous (duplicate names) */
2792 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2793 goto out;
2794 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2795 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2796 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2797 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2798 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2799 }
2800 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2801 action = ST_ADM_ACTION_ENABLE;
2802 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2803 else if (strcmp(value, "stop") == 0) {
2804 action = ST_ADM_ACTION_STOP;
2805 }
2806 else if (strcmp(value, "start") == 0) {
2807 action = ST_ADM_ACTION_START;
2808 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2809 else if (strcmp(value, "shutdown") == 0) {
2810 action = ST_ADM_ACTION_SHUTDOWN;
2811 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2812 else {
2813 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2814 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2815 }
2816 }
2817 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2818 if (!(px && action)) {
2819 /*
2820 * Indicates that we'll need to reprocess the parameters
2821 * as soon as backend and action are known
2822 */
2823 if (!reprocess) {
2824 st_cur_param = cur_param;
2825 st_next_param = next_param;
2826 }
2827 reprocess = 1;
2828 }
2829 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2830 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2831 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2832 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2833 /* Not already in maintenance, we can change the server state */
2834 sv->state |= SRV_MAINTAIN;
2835 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2836 altered_servers++;
2837 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2838 }
2839 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2840 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2841 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2842 /* Already in maintenance, we can change the server state */
2843 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2844 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2845 altered_servers++;
2846 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2847 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2848 break;
2849 case ST_ADM_ACTION_STOP:
2850 case ST_ADM_ACTION_START:
2851 if (action == ST_ADM_ACTION_START)
2852 sv->uweight = sv->iweight;
2853 else
2854 sv->uweight = 0;
2855
2856 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2857 /* we must take care of not pushing the server to full throttle during slow starts */
2858 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2859 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2860 else
2861 sv->eweight = BE_WEIGHT_SCALE;
2862 sv->eweight *= sv->uweight;
2863 } else {
2864 sv->eweight = sv->uweight;
2865 }
2866
2867 /* static LB algorithms are a bit harder to update */
2868 if (px->lbprm.update_server_eweight)
2869 px->lbprm.update_server_eweight(sv);
2870 else if (sv->eweight) {
2871 if (px->lbprm.set_server_status_up)
2872 px->lbprm.set_server_status_up(sv);
2873 }
2874 else {
2875 if (px->lbprm.set_server_status_down)
2876 px->lbprm.set_server_status_down(sv);
2877 }
2878 altered_servers++;
2879 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2880 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2881 case ST_ADM_ACTION_SHUTDOWN:
2882 if (px->state != PR_STSTOPPED) {
2883 struct session *sess, *sess_bck;
2884
2885 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2886 if (sess->srv_conn == sv)
2887 session_shutdown(sess, SN_ERR_KILLED);
2888
2889 altered_servers++;
2890 total_servers++;
2891 }
2892 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2893 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2894 } else {
2895 /* the server name is unknown or ambiguous (duplicate names) */
2896 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2897 }
2898 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2899 if (reprocess && px && action) {
2900 /* Now, we know the backend and the action chosen by the user.
2901 * We can safely restart from the first server parameter
2902 * to reprocess them
2903 */
2904 cur_param = st_cur_param;
2905 next_param = st_next_param;
2906 reprocess = 0;
2907 goto reprocess_servers;
2908 }
2909
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2910 next_param = cur_param;
2911 }
2912 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2913
2914 if (total_servers == 0) {
2915 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2916 }
2917 else if (altered_servers == 0) {
2918 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2919 }
2920 else if (altered_servers == total_servers) {
2921 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2922 }
2923 else {
2924 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2925 }
2926 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2927 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2928}
2929
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2930/* This function checks whether we need to enable a POST analyser to parse a
2931 * stats request, and also registers the stats I/O handler. It returns zero
2932 * if it needs to come back again, otherwise non-zero if it finishes.
2933 */
2934int http_handle_stats(struct session *s, struct channel *req)
2935{
2936 struct stats_admin_rule *stats_admin_rule;
2937 struct stream_interface *si = s->rep->prod;
2938 struct http_txn *txn = &s->txn;
2939 struct http_msg *msg = &txn->req;
2940 struct uri_auth *uri = s->be->uri_auth;
2941
2942 /* now check whether we have some admin rules for this request */
2943 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2944 int ret = 1;
2945
2946 if (stats_admin_rule->cond) {
2947 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2948 ret = acl_pass(ret);
2949 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2950 ret = !ret;
2951 }
2952
2953 if (ret) {
2954 /* no rule, or the rule matches */
2955 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
2956 break;
2957 }
2958 }
2959
2960 /* Was the status page requested with a POST ? */
2961 if (unlikely(txn->meth == HTTP_METH_POST)) {
2962 if (si->applet.ctx.stats.flags & STAT_ADMIN) {
2963 if (msg->msg_state < HTTP_MSG_100_SENT) {
2964 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2965 * send an HTTP/1.1 100 Continue intermediate response.
2966 */
2967 if (msg->flags & HTTP_MSGF_VER_11) {
2968 struct hdr_ctx ctx;
2969 ctx.idx = 0;
2970 /* Expect is allowed in 1.1, look for it */
2971 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2972 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2973 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2974 }
2975 }
2976 msg->msg_state = HTTP_MSG_100_SENT;
2977 s->logs.tv_request = now; /* update the request timer to reflect full request */
2978 }
2979 if (!http_process_req_stat_post(si, txn, req))
2980 return 0; /* we need more data */
2981 }
2982 else
2983 si->applet.ctx.stats.st_code = STAT_STATUS_DENY;
2984
2985 /* We don't want to land on the posted stats page because a refresh will
2986 * repost the data. We don't want this to happen on accident so we redirect
2987 * the browse to the stats page with a GET.
2988 */
2989 chunk_printf(&trash,
2990 "HTTP/1.0 303 See Other\r\n"
2991 "Cache-Control: no-cache\r\n"
2992 "Content-Type: text/plain\r\n"
2993 "Connection: close\r\n"
2994 "Location: %s;st=%s\r\n"
2995 "\r\n",
2996 uri->uri_prefix,
2997 ((si->applet.ctx.stats.st_code > STAT_STATUS_INIT) &&
2998 (si->applet.ctx.stats.st_code < STAT_STATUS_SIZE) &&
2999 stat_status_codes[si->applet.ctx.stats.st_code]) ?
3000 stat_status_codes[si->applet.ctx.stats.st_code] :
3001 stat_status_codes[STAT_STATUS_UNKN]);
3002
3003 s->txn.status = 303;
3004 s->logs.tv_request = now;
3005 stream_int_retnclose(req->prod, &trash);
3006 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
3007
3008 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3009 s->fe->fe_counters.intercepted_req++;
3010
3011 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3012 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3013 if (!(s->flags & SN_FINST_MASK))
3014 s->flags |= SN_FINST_R;
3015 return 1;
3016 }
3017
3018 /* OK, let's go on now */
3019
3020 chunk_printf(&trash,
3021 "HTTP/1.0 200 OK\r\n"
3022 "Cache-Control: no-cache\r\n"
3023 "Connection: close\r\n"
3024 "Content-Type: %s\r\n",
3025 (si->applet.ctx.stats.flags & STAT_FMT_CSV) ? "text/plain" : "text/html");
3026
3027 if (uri->refresh > 0 && !(si->applet.ctx.stats.flags & STAT_NO_REFRESH))
3028 chunk_appendf(&trash, "Refresh: %d\r\n",
3029 uri->refresh);
3030
3031 chunk_appendf(&trash, "\r\n");
3032
3033 s->txn.status = 200;
3034 s->logs.tv_request = now;
3035
3036 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3037 s->fe->fe_counters.intercepted_req++;
3038
3039 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3040 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3041 if (!(s->flags & SN_FINST_MASK))
3042 s->flags |= SN_FINST_R;
3043
3044 if (s->txn.meth == HTTP_METH_HEAD) {
3045 /* that's all we return in case of HEAD request, so let's immediately close. */
3046 stream_int_retnclose(req->prod, &trash);
3047 s->target = &http_stats_applet.obj_type; /* just for logging the applet name */
3048 return 1;
3049 }
3050
3051 /* OK, push the response and hand over to the stats I/O handler */
3052 bi_putchk(s->rep, &trash);
3053
3054 s->task->nice = -32; /* small boost for HTTP statistics */
3055 stream_int_register_handler(s->rep->prod, &http_stats_applet);
3056 s->target = s->rep->prod->conn->target; // for logging only
3057 s->rep->prod->conn->xprt_ctx = s;
3058 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
3059 req->analysers = 0;
3060
3061 return 1;
3062}
3063
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3064/* returns a pointer to the first rule which forbids access (deny or http_auth),
3065 * or NULL if everything's OK.
3066 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3067static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3068http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3069{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3070 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3071
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3072 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3073 int ret = 1;
3074
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3075 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3076 continue;
3077
3078 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3079 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3080 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]3081 ret = acl_pass(ret);
3082
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3083 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3084 ret = !ret;
3085 }
3086
3087 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3088 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3089 return NULL; /* no problem */
3090 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3091 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3092 }
3093 }
3094 return NULL;
3095}
3096
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3097/* This stream analyser runs all HTTP request processing which is common to
3098 * frontends and backends, which means blocking ACLs, filters, connection-close,
3099 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3100 * 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]3101 * either needs more data or wants to immediately abort the request (eg: deny,
3102 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3103 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3104int 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]3105{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3106 struct http_txn *txn = &s->txn;
3107 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3108 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3109 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3110 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3111 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]3112 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3113
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3114 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3115 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3116 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3117 return 0;
3118 }
3119
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3120 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3121 req->analyse_exp = TICK_ETERNITY;
3122
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3123 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]3124 now_ms, __FUNCTION__,
3125 s,
3126 req,
3127 req->rex, req->wex,
3128 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3129 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3130 req->analysers);
3131
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3132 /* first check whether we have some ACLs set to block this request */
3133 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3134 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]3135
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3136 ret = acl_pass(ret);
3137 if (cond->pol == ACL_COND_UNLESS)
3138 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3139
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3140 if (ret) {
3141 txn->status = 403;
3142 /* let's log the request time */
3143 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3144 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3145 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3146 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3147 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3148 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3149
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3150 /* just in case we have some per-backend tracking */
3151 session_inc_be_http_req_ctr(s);
3152
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3153 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3154 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]3155
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3156 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3157 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3158 do_stats = stats_check_uri(s->rep->prod, txn, px);
3159 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3160 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]3161 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3162 else
3163 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3164
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3165 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3166 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]3167 txn->status = 403;
3168 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3169 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3170 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3171 s->fe->fe_counters.denied_req++;
3172 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3173 s->be->be_counters.denied_req++;
3174 if (s->listener->counters)
3175 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3176 goto return_prx_cond;
3177 }
3178
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3179 /* try headers filters */
3180 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3181 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3182 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3183
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3184 /* has the request been denied ? */
3185 if (txn->flags & TX_CLDENY) {
3186 /* no need to go further */
3187 txn->status = 403;
3188 /* let's log the request time */
3189 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3190 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3191 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3192 goto return_prx_cond;
3193 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3194
3195 /* When a connection is tarpitted, we use the tarpit timeout,
3196 * which may be the same as the connect timeout if unspecified.
3197 * If unset, then set it to zero because we really want it to
3198 * eventually expire. We build the tarpit as an analyser.
3199 */
3200 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3201 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3202 /* wipe the request out so that we can drop the connection early
3203 * if the client closes first.
3204 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3205 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3206 req->analysers = 0; /* remove switching rules etc... */
3207 req->analysers |= AN_REQ_HTTP_TARPIT;
3208 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3209 if (!req->analyse_exp)
3210 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3211 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3212 return 1;
3213 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3214 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3215
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3216 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3217 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3218 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3219 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3220 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3221 * avoid to redo the same work if FE and BE have the same settings (common).
3222 * The method consists in checking if options changed between the two calls
3223 * (implying that either one is non-null, or one of them is non-null and we
3224 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3225 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3226
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3227 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3228 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3229 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3230 (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]3231 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3232
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3233 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3234 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3235 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3236 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3237 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3238 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3239 tmp = TX_CON_WANT_CLO;
3240
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3241 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3242 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3243
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3244 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3245 /* parse the Connection header and possibly clean it */
3246 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3247 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3248 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3249 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3250 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3251 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3252 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3253 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3254 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3255
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3256 /* check if client or config asks for explicit close in KAL/SCL */
3257 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3258 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3259 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3260 (!(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]3261 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3262 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3263 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3264 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3265 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3266
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3267 /* we can be blocked here because the request needs to be authenticated,
3268 * either to pass or to access stats.
3269 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3270 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]3271 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3272
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3273 if (!realm)
3274 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3275
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3276 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]3277 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3278 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3279 /* on 401 we still count one error, because normal browsing
3280 * won't significantly increase the counter but brute force
3281 * attempts will.
3282 */
3283 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3284 goto return_prx_cond;
3285 }
3286
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3287 /* add request headers from the rule sets in the same order */
3288 list_for_each_entry(wl, &px->req_add, list) {
3289 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3290 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]3291 ret = acl_pass(ret);
3292 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3293 ret = !ret;
3294 if (!ret)
3295 continue;
3296 }
3297
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3298 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3299 goto return_bad_req;
3300 }
3301
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3302 if (unlikely(do_stats)) {
3303 /* process the stats request now */
3304 if (!http_handle_stats(s, req)) {
3305 /* we need more data, let's come back here later */
3306 req->analysers |= an_bit;
3307 channel_dont_connect(req);
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3308 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3309 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3310 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3311
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3312 /* check whether we have some ACLs set to redirect this request */
3313 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3314 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3315
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3316 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3317 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]3318 ret = acl_pass(ret);
3319 if (rule->cond->pol == ACL_COND_UNLESS)
3320 ret = !ret;
3321 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3322
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3323 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3324 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3325
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3326 /* build redirect message */
3327 switch(rule->code) {
3328 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3329 msg_fmt = HTTP_303;
3330 break;
3331 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3332 msg_fmt = HTTP_301;
3333 break;
3334 case 302:
3335 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3336 msg_fmt = HTTP_302;
3337 break;
3338 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3339
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3340 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3341 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3342
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3343 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3344 case REDIRECT_TYPE_SCHEME: {
3345 const char *path;
3346 const char *host;
3347 struct hdr_ctx ctx;
3348 int pathlen;
3349 int hostlen;
3350
3351 host = "";
3352 hostlen = 0;
3353 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3354 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]3355 host = ctx.line + ctx.val;
3356 hostlen = ctx.vlen;
3357 }
3358
3359 path = http_get_path(txn);
3360 /* build message using path */
3361 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3362 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]3363 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3364 int qs = 0;
3365 while (qs < pathlen) {
3366 if (path[qs] == '?') {
3367 pathlen = qs;
3368 break;
3369 }
3370 qs++;
3371 }
3372 }
3373 } else {
3374 path = "/";
3375 pathlen = 1;
3376 }
3377
3378 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3379 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3380 goto return_bad_req;
3381
3382 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3383 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3384 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3385
3386 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3387 memcpy(trash.str + trash.len, "://", 3);
3388 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3389
3390 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3391 memcpy(trash.str + trash.len, host, hostlen);
3392 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3393
3394 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3395 memcpy(trash.str + trash.len, path, pathlen);
3396 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3397
3398 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3399 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3400 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3401 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3402 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3403 trash.str[trash.len] = '/';
3404 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3405 }
3406
3407 break;
3408 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3409 case REDIRECT_TYPE_PREFIX: {
3410 const char *path;
3411 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3412
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3413 path = http_get_path(txn);
3414 /* build message using path */
3415 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3416 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]3417 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3418 int qs = 0;
3419 while (qs < pathlen) {
3420 if (path[qs] == '?') {
3421 pathlen = qs;
3422 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3423 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3424 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3425 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3426 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3427 } else {
3428 path = "/";
3429 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3430 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3431
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3432 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3433 goto return_bad_req;
3434
3435 /* add prefix. Note that if prefix == "/", we don't want to
3436 * add anything, otherwise it makes it hard for the user to
3437 * configure a self-redirection.
3438 */
3439 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3440 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3441 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3442 }
3443
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3444 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3445 memcpy(trash.str + trash.len, path, pathlen);
3446 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3447
3448 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3449 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3450 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3451 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3452 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3453 trash.str[trash.len] = '/';
3454 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3455 }
3456
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3457 break;
3458 }
3459 case REDIRECT_TYPE_LOCATION:
3460 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3461 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3462 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3463
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3464 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3465 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3466 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3467 break;
3468 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3469
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3470 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3471 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3472 trash.len += 14;
3473 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3474 trash.len += rule->cookie_len;
3475 memcpy(trash.str + trash.len, "\r\n", 2);
3476 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3477 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3478
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3479 /* add end of headers and the keep-alive/close status.
3480 * We may choose to set keep-alive if the Location begins
3481 * with a slash, because the client will come back to the
3482 * same server.
3483 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3484 txn->status = rule->code;
3485 /* let's log the request time */
3486 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3487
3488 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3489 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3490 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3491 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3492 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3493 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3494 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3495 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3496 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3497 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3498 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3499 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3500 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3501 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3502 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3503 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3504 trash.len += 4;
3505 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3506 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3507 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3508 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3509 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3510 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3511 txn->req.msg_state = HTTP_MSG_CLOSED;
3512 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3513 break;
3514 } else {
3515 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3516 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3517 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3518 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3519 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3520 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3521 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3522 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3523 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3524 goto return_prx_cond;
3525 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3526 }
3527 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3528
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3529 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3530 * If this happens, then the data will not come immediately, so we must
3531 * send all what we have without waiting. Note that due to the small gain
3532 * 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]3533 * 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]3534 * itself once used.
3535 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3536 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3537
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3538 /* that's OK for us now, let's move on to next analysers */
3539 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3540
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3541 return_bad_req:
3542 /* We centralize bad requests processing here */
3543 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3544 /* we detected a parsing error. We want to archive this request
3545 * in the dedicated proxy area for later troubleshooting.
3546 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3547 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]3548 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3549
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3550 txn->req.msg_state = HTTP_MSG_ERROR;
3551 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3552 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3553
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3554 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3555 if (s->listener->counters)
3556 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3557
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3558 return_prx_cond:
3559 if (!(s->flags & SN_ERR_MASK))
3560 s->flags |= SN_ERR_PRXCOND;
3561 if (!(s->flags & SN_FINST_MASK))
3562 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3563
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3564 req->analysers = 0;
3565 req->analyse_exp = TICK_ETERNITY;
3566 return 0;
3567}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3568
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3569/* This function performs all the processing enabled for the current request.
3570 * It returns 1 if the processing can continue on next analysers, or zero if it
3571 * needs more data, encounters an error, or wants to immediately abort the
3572 * request. It relies on buffers flags, and updates s->req->analysers.
3573 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3574int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3575{
3576 struct http_txn *txn = &s->txn;
3577 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3578
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3579 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3580 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3581 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3582 return 0;
3583 }
3584
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3585 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]3586 now_ms, __FUNCTION__,
3587 s,
3588 req,
3589 req->rex, req->wex,
3590 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3591 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3592 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3593
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3594 if (s->fe->comp || s->be->comp)
3595 select_compression_request_header(s, req->buf);
3596
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3597 /*
3598 * Right now, we know that we have processed the entire headers
3599 * and that unwanted requests have been filtered out. We can do
3600 * whatever we want with the remaining request. Also, now we
3601 * may have separate values for ->fe, ->be.
3602 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3603
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3604 /*
3605 * If HTTP PROXY is set we simply get remote server address
3606 * parsing incoming request.
3607 */
3608 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3609 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]3610 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3611
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3612 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3613 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3614 * Note that doing so might move headers in the request, but
3615 * the fields will stay coherent and the URI will not move.
3616 * This should only be performed in the backend.
3617 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3618 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3619 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3620 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3621
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3622 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3623 * 8: the appsession cookie was looked up very early in 1.2,
3624 * so let's do the same now.
3625 */
3626
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3627 /* It needs to look into the URI unless persistence must be ignored */
3628 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3629 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]3630 }
3631
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3632 /* add unique-id if "header-unique-id" is specified */
3633
3634 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3635 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3636
3637 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3638 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3639 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3640 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3641 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]3642 goto return_bad_req;
3643 }
3644
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3645 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3646 * 9: add X-Forwarded-For if either the frontend or the backend
3647 * asks for it.
3648 */
3649 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3650 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3651 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3652 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3653 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]3654 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3655 /* The header is set to be added only if none is present
3656 * and we found it, so don't do anything.
3657 */
3658 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3659 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3660 /* Add an X-Forwarded-For header unless the source IP is
3661 * in the 'except' network range.
3662 */
3663 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3664 (((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]3665 != s->fe->except_net.s_addr) &&
3666 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3667 (((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]3668 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3669 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3670 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3671 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3672
3673 /* Note: we rely on the backend to get the header name to be used for
3674 * x-forwarded-for, because the header is really meant for the backends.
3675 * However, if the backend did not specify any option, we have to rely
3676 * on the frontend's header name.
3677 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3678 if (s->be->fwdfor_hdr_len) {
3679 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3680 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3681 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3682 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3683 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3684 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3685 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]3686
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3687 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]3688 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3689 }
3690 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3691 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3692 /* FIXME: for the sake of completeness, we should also support
3693 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3694 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3695 int len;
3696 char pn[INET6_ADDRSTRLEN];
3697 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3698 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3699 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3700
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3701 /* Note: we rely on the backend to get the header name to be used for
3702 * x-forwarded-for, because the header is really meant for the backends.
3703 * However, if the backend did not specify any option, we have to rely
3704 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3705 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3706 if (s->be->fwdfor_hdr_len) {
3707 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3708 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3709 } else {
3710 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3711 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3712 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3713 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3714
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3715 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]3716 goto return_bad_req;
3717 }
3718 }
3719
3720 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3721 * 10: add X-Original-To if either the frontend or the backend
3722 * asks for it.
3723 */
3724 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3725
3726 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3727 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3728 /* Add an X-Original-To header unless the destination IP is
3729 * in the 'except' network range.
3730 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3731 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3732
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3733 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3734 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3735 (((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]3736 != s->fe->except_to.s_addr) &&
3737 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3738 (((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]3739 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3740 int len;
3741 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3742 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3743
3744 /* Note: we rely on the backend to get the header name to be used for
3745 * x-original-to, because the header is really meant for the backends.
3746 * However, if the backend did not specify any option, we have to rely
3747 * on the frontend's header name.
3748 */
3749 if (s->be->orgto_hdr_len) {
3750 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3751 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3752 } else {
3753 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3754 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3755 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3756 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]3757
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3758 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]3759 goto return_bad_req;
3760 }
3761 }
3762 }
3763
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3764 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3765 * If an "Upgrade" token is found, the header is left untouched in order not to have
3766 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3767 * "Upgrade" is present in the Connection header.
3768 */
3769 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3770 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3771 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3772 unsigned int want_flags = 0;
3773
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3774 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3775 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3776 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3777 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3778 want_flags |= TX_CON_CLO_SET;
3779 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3780 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3781 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3782 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3783 want_flags |= TX_CON_KAL_SET;
3784 }
3785
3786 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3787 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3788 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3789
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3790
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3791 /* If we have no server assigned yet and we're balancing on url_param
3792 * with a POST request, we may be interested in checking the body for
3793 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3794 */
3795 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3796 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3797 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3798 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3799 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3800 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3801 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3802
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3803 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3804 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3805#ifdef TCP_QUICKACK
3806 /* We expect some data from the client. Unless we know for sure
3807 * we already have a full request, we have to re-enable quick-ack
3808 * in case we previously disabled it, otherwise we might cause
3809 * the client to delay further data.
3810 */
3811 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3812 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3813 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3814 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]3815#endif
3816 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3817
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3818 /*************************************************************
3819 * OK, that's finished for the headers. We have done what we *
3820 * could. Let's switch to the DATA state. *
3821 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3822 req->analyse_exp = TICK_ETERNITY;
3823 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3824
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3825 /* if the server closes the connection, we want to immediately react
3826 * and close the socket to save packets and syscalls.
3827 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]3828 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
3829 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3830
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3831 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3832 /* OK let's go on with the BODY now */
3833 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3834
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3835 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3836 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3837 /* we detected a parsing error. We want to archive this request
3838 * in the dedicated proxy area for later troubleshooting.
3839 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3840 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]3841 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3842
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3843 txn->req.msg_state = HTTP_MSG_ERROR;
3844 txn->status = 400;
3845 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3846 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3847
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3848 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3849 if (s->listener->counters)
3850 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3851
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3852 if (!(s->flags & SN_ERR_MASK))
3853 s->flags |= SN_ERR_PRXCOND;
3854 if (!(s->flags & SN_FINST_MASK))
3855 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3856 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3857}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3858
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3859/* This function is an analyser which processes the HTTP tarpit. It always
3860 * returns zero, at the beginning because it prevents any other processing
3861 * from occurring, and at the end because it terminates the request.
3862 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3863int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3864{
3865 struct http_txn *txn = &s->txn;
3866
3867 /* This connection is being tarpitted. The CLIENT side has
3868 * already set the connect expiration date to the right
3869 * timeout. We just have to check that the client is still
3870 * there and that the timeout has not expired.
3871 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3872 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3873 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3874 !tick_is_expired(req->analyse_exp, now_ms))
3875 return 0;
3876
3877 /* We will set the queue timer to the time spent, just for
3878 * logging purposes. We fake a 500 server error, so that the
3879 * attacker will not suspect his connection has been tarpitted.
3880 * It will not cause trouble to the logs because we can exclude
3881 * the tarpitted connections by filtering on the 'PT' status flags.
3882 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3883 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3884
3885 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3886 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3887 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3888
3889 req->analysers = 0;
3890 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3891
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3892 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3893 if (s->listener->counters)
3894 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3895
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3896 if (!(s->flags & SN_ERR_MASK))
3897 s->flags |= SN_ERR_PRXCOND;
3898 if (!(s->flags & SN_FINST_MASK))
3899 s->flags |= SN_FINST_T;
3900 return 0;
3901}
3902
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3903/* This function is an analyser which processes the HTTP request body. It looks
3904 * for parameters to be used for the load balancing algorithm (url_param). It
3905 * must only be called after the standard HTTP request processing has occurred,
3906 * because it expects the request to be parsed. It returns zero if it needs to
3907 * read more data, or 1 once it has completed its analysis.
3908 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3909int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3910{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3911 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3912 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3913 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3914
3915 /* We have to parse the HTTP request body to find any required data.
3916 * "balance url_param check_post" should have been the only way to get
3917 * into this. We were brought here after HTTP header analysis, so all
3918 * related structures are ready.
3919 */
3920
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3921 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3922 goto missing_data;
3923
3924 if (msg->msg_state < HTTP_MSG_100_SENT) {
3925 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3926 * send an HTTP/1.1 100 Continue intermediate response.
3927 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3928 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3929 struct hdr_ctx ctx;
3930 ctx.idx = 0;
3931 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3932 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3933 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3934 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3935 }
3936 }
3937 msg->msg_state = HTTP_MSG_100_SENT;
3938 }
3939
3940 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3941 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3942 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3943 * is still null. We must save the body in msg->next because it
3944 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3945 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3946 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3947
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3948 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3949 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3950 else
3951 msg->msg_state = HTTP_MSG_DATA;
3952 }
3953
3954 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3955 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3956 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3957 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3958 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3959 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3960
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3961 if (!ret)
3962 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3963 else if (ret < 0) {
3964 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3965 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3966 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3967 }
3968
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3969 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3970 * We have the first data byte is in msg->sov. We're waiting for at
3971 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3972 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3973
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3974 if (msg->body_len < limit)
3975 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3976
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3977 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3978 goto http_end;
3979
3980 missing_data:
3981 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3982 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3983 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3984 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3985 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3986
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3987 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3988 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3989 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3990
3991 if (!(s->flags & SN_ERR_MASK))
3992 s->flags |= SN_ERR_CLITO;
3993 if (!(s->flags & SN_FINST_MASK))
3994 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3995 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3996 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3997
3998 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3999 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]4000 /* Not enough data. We'll re-use the http-request
4001 * timeout here. Ideally, we should set the timeout
4002 * relative to the accept() date. We just set the
4003 * request timeout once at the beginning of the
4004 * request.
4005 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4006 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4007 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4008 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4009 return 0;
4010 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4011
4012 http_end:
4013 /* The situation will not evolve, so let's give up on the analysis. */
4014 s->logs.tv_request = now; /* update the request timer to reflect full request */
4015 req->analysers &= ~an_bit;
4016 req->analyse_exp = TICK_ETERNITY;
4017 return 1;
4018
4019 return_bad_req: /* let's centralize all bad requests */
4020 txn->req.msg_state = HTTP_MSG_ERROR;
4021 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4022 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4023
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4024 if (!(s->flags & SN_ERR_MASK))
4025 s->flags |= SN_ERR_PRXCOND;
4026 if (!(s->flags & SN_FINST_MASK))
4027 s->flags |= SN_FINST_R;
4028
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4029 return_err_msg:
4030 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4031 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4032 if (s->listener->counters)
4033 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4034 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4035}
4036
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4037/* send a server's name with an outgoing request over an established connection.
4038 * Note: this function is designed to be called once the request has been scheduled
4039 * for being forwarded. This is the reason why it rewinds the buffer before
4040 * proceeding.
4041 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4042int 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]4043
4044 struct hdr_ctx ctx;
4045
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4046 char *hdr_name = be->server_id_hdr_name;
4047 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4048 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4049 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4050 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4051
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4052 ctx.idx = 0;
4053
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4054 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4055 if (old_o) {
4056 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4057 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4058 }
4059
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4060 old_i = chn->buf->i;
4061 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]4062 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4063 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4064 }
4065
4066 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4067 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4068 memcpy(hdr_val, hdr_name, hdr_name_len);
4069 hdr_val += hdr_name_len;
4070 *hdr_val++ = ':';
4071 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4072 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4073 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]4074
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4075 if (old_o) {
4076 /* If this was a forwarded request, we must readjust the amount of
4077 * data to be forwarded in order to take into account the size
4078 * variations.
4079 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4080 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4081 }
4082
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4083 return 0;
4084}
4085
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4086/* Terminate current transaction and prepare a new one. This is very tricky
4087 * right now but it works.
4088 */
4089void http_end_txn_clean_session(struct session *s)
4090{
4091 /* FIXME: We need a more portable way of releasing a backend's and a
4092 * server's connections. We need a safer way to reinitialize buffer
4093 * flags. We also need a more accurate method for computing per-request
4094 * data.
4095 */
4096 http_silent_debug(__LINE__, s);
4097
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4098 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4099 si_shutr(s->req->cons);
4100 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4101
4102 http_silent_debug(__LINE__, s);
4103
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4104 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4105 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4106 if (unlikely(s->srv_conn))
4107 sess_change_server(s, NULL);
4108 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4109
4110 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4111 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4112 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4113
4114 if (s->txn.status) {
4115 int n;
4116
4117 n = s->txn.status / 100;
4118 if (n < 1 || n > 5)
4119 n = 0;
4120
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4121 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4122 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4123 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4124 s->fe->fe_counters.p.http.comp_rsp++;
4125 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4126 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4127 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4128 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4129 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4130 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4131 s->be->be_counters.p.http.comp_rsp++;
4132 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4133 }
4134
4135 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4136 s->logs.bytes_in -= s->req->buf->i;
4137 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4138
4139 /* let's do a final log if we need it */
4140 if (s->logs.logwait &&
4141 !(s->flags & SN_MONITOR) &&
4142 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4143 s->do_log(s);
4144 }
4145
4146 s->logs.accept_date = date; /* user-visible date for logging */
4147 s->logs.tv_accept = now; /* corrected date for internal use */
4148 tv_zero(&s->logs.tv_request);
4149 s->logs.t_queue = -1;
4150 s->logs.t_connect = -1;
4151 s->logs.t_data = -1;
4152 s->logs.t_close = 0;
4153 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4154 s->logs.srv_queue_size = 0; /* we will get this number soon */
4155
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4156 s->logs.bytes_in = s->req->total = s->req->buf->i;
4157 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4158
4159 if (s->pend_pos)
4160 pendconn_free(s->pend_pos);
4161
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4162 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4163 if (s->flags & SN_CURR_SESS) {
4164 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4165 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4166 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4167 if (may_dequeue_tasks(objt_server(s->target), s->be))
4168 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4169 }
4170
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4171 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4172
4173 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4174 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4175 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4176 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4177 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4178 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4179 s->req->cons->err_loc = NULL;
4180 s->req->cons->exp = TICK_ETERNITY;
4181 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4182 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4183 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]4184 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]4185 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4186
4187 if (s->flags & SN_COMP_READY)
4188 s->comp_algo->end(&s->comp_ctx);
4189 s->comp_algo = NULL;
4190 s->flags &= ~SN_COMP_READY;
4191
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4192 s->txn.meth = 0;
4193 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4194 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4195 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4196 s->req->cons->flags |= SI_FL_INDEP_STR;
4197
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4198 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4199 s->req->flags |= CF_NEVER_WAIT;
4200 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4201 }
4202
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4203 /* if the request buffer is not empty, it means we're
4204 * about to process another request, so send pending
4205 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4206 * Just don't do this if the buffer is close to be full,
4207 * because the request will wait for it to flush a little
4208 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4209 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4210 if (s->req->buf->i) {
4211 if (s->rep->buf->o &&
4212 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4213 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]4214 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4215 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4216
4217 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4218 channel_auto_read(s->req);
4219 channel_auto_close(s->req);
4220 channel_auto_read(s->rep);
4221 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4222
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4223 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4224 s->rep->analysers = 0;
4225
4226 http_silent_debug(__LINE__, s);
4227}
4228
4229
4230/* This function updates the request state machine according to the response
4231 * state machine and buffer flags. It returns 1 if it changes anything (flag
4232 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4233 * it is only used to find when a request/response couple is complete. Both
4234 * this function and its equivalent should loop until both return zero. It
4235 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4236 */
4237int http_sync_req_state(struct session *s)
4238{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4239 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4240 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4241 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4242 unsigned int old_state = txn->req.msg_state;
4243
4244 http_silent_debug(__LINE__, s);
4245 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4246 return 0;
4247
4248 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4249 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4250 * We can shut the read side unless we want to abort_on_close,
4251 * or we have a POST request. The issue with POST requests is
4252 * that some browsers still send a CRLF after the request, and
4253 * this CRLF must be read so that it does not remain in the kernel
4254 * buffers, otherwise a close could cause an RST on some systems
4255 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4256 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4257 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4258 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4259
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4260 /* if the server closes the connection, we want to immediately react
4261 * and close the socket to save packets and syscalls.
4262 */
4263 chn->cons->flags |= SI_FL_NOHALF;
4264
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4265 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4266 goto wait_other_side;
4267
4268 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4269 /* The server has not finished to respond, so we
4270 * don't want to move in order not to upset it.
4271 */
4272 goto wait_other_side;
4273 }
4274
4275 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4276 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4277 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4278 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4279 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4280 goto wait_other_side;
4281 }
4282
4283 /* When we get here, it means that both the request and the
4284 * response have finished receiving. Depending on the connection
4285 * mode, we'll have to wait for the last bytes to leave in either
4286 * direction, and sometimes for a close to be effective.
4287 */
4288
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4289 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4290 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4291 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4292 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4293 }
4294 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4295 /* Option forceclose is set, or either side wants to close,
4296 * let's enforce it now that we're not expecting any new
4297 * data to come. The caller knows the session is complete
4298 * once both states are CLOSED.
4299 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4300 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4301 channel_shutr_now(chn);
4302 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4303 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4304 }
4305 else {
4306 /* The last possible modes are keep-alive and tunnel. Since tunnel
4307 * mode does not set the body analyser, we can't reach this place
4308 * in tunnel mode, so we're left with keep-alive only.
4309 * This mode is currently not implemented, we switch to tunnel mode.
4310 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4311 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4312 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4313 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4314 }
4315
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4316 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4317 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4318 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4319
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4320 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4321 txn->req.msg_state = HTTP_MSG_CLOSING;
4322 goto http_msg_closing;
4323 }
4324 else {
4325 txn->req.msg_state = HTTP_MSG_CLOSED;
4326 goto http_msg_closed;
4327 }
4328 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4329 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4330 }
4331
4332 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4333 http_msg_closing:
4334 /* nothing else to forward, just waiting for the output buffer
4335 * to be empty and for the shutw_now to take effect.
4336 */
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->req.msg_state = HTTP_MSG_CLOSED;
4339 goto http_msg_closed;
4340 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4341 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4342 txn->req.msg_state = HTTP_MSG_ERROR;
4343 goto wait_other_side;
4344 }
4345 }
4346
4347 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4348 http_msg_closed:
4349 goto wait_other_side;
4350 }
4351
4352 wait_other_side:
4353 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4354 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4355}
4356
4357
4358/* This function updates the response state machine according to the request
4359 * state machine and buffer flags. It returns 1 if it changes anything (flag
4360 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4361 * it is only used to find when a request/response couple is complete. Both
4362 * this function and its equivalent should loop until both return zero. It
4363 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4364 */
4365int http_sync_res_state(struct session *s)
4366{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4367 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4368 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4369 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4370 unsigned int old_state = txn->rsp.msg_state;
4371
4372 http_silent_debug(__LINE__, s);
4373 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4374 return 0;
4375
4376 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4377 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4378 * still monitor the server connection for a possible close
4379 * while the request is being uploaded, so we don't disable
4380 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4381 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4382 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4383
4384 if (txn->req.msg_state == HTTP_MSG_ERROR)
4385 goto wait_other_side;
4386
4387 if (txn->req.msg_state < HTTP_MSG_DONE) {
4388 /* The client seems to still be sending data, probably
4389 * because we got an error response during an upload.
4390 * We have the choice of either breaking the connection
4391 * or letting it pass through. Let's do the later.
4392 */
4393 goto wait_other_side;
4394 }
4395
4396 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4397 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4398 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4399 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4400 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4401 goto wait_other_side;
4402 }
4403
4404 /* When we get here, it means that both the request and the
4405 * response have finished receiving. Depending on the connection
4406 * mode, we'll have to wait for the last bytes to leave in either
4407 * direction, and sometimes for a close to be effective.
4408 */
4409
4410 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4411 /* Server-close mode : shut read and wait for the request
4412 * side to close its output buffer. The caller will detect
4413 * when we're in DONE and the other is in CLOSED and will
4414 * catch that for the final cleanup.
4415 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4416 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4417 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4418 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4419 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4420 /* Option forceclose is set, or either side wants to close,
4421 * let's enforce it now that we're not expecting any new
4422 * data to come. The caller knows the session is complete
4423 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4424 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4425 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4426 channel_shutr_now(chn);
4427 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4428 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4429 }
4430 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4431 /* The last possible modes are keep-alive and tunnel. Since tunnel
4432 * mode does not set the body analyser, we can't reach this place
4433 * in tunnel mode, so we're left with keep-alive only.
4434 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4435 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4436 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4437 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4438 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4439 }
4440
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4441 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4442 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4443 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4444 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4445 goto http_msg_closing;
4446 }
4447 else {
4448 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4449 goto http_msg_closed;
4450 }
4451 }
4452 goto wait_other_side;
4453 }
4454
4455 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4456 http_msg_closing:
4457 /* nothing else to forward, just waiting for the output buffer
4458 * to be empty and for the shutw_now to take effect.
4459 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4460 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4461 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4462 goto http_msg_closed;
4463 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4464 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4465 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4466 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4467 if (objt_server(s->target))
4468 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4469 goto wait_other_side;
4470 }
4471 }
4472
4473 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4474 http_msg_closed:
4475 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4476 bi_erase(chn);
4477 channel_auto_close(chn);
4478 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4479 goto wait_other_side;
4480 }
4481
4482 wait_other_side:
4483 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4484 /* We force the response to leave immediately if we're waiting for the
4485 * other side, since there is no pending shutdown to push it out.
4486 */
4487 if (!channel_is_empty(chn))
4488 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4489 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4490}
4491
4492
4493/* Resync the request and response state machines. Return 1 if either state
4494 * changes.
4495 */
4496int http_resync_states(struct session *s)
4497{
4498 struct http_txn *txn = &s->txn;
4499 int old_req_state = txn->req.msg_state;
4500 int old_res_state = txn->rsp.msg_state;
4501
4502 http_silent_debug(__LINE__, s);
4503 http_sync_req_state(s);
4504 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4505 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4506 if (!http_sync_res_state(s))
4507 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4508 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4509 if (!http_sync_req_state(s))
4510 break;
4511 }
4512 http_silent_debug(__LINE__, s);
4513 /* OK, both state machines agree on a compatible state.
4514 * There are a few cases we're interested in :
4515 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4516 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4517 * directions, so let's simply disable both analysers.
4518 * - HTTP_MSG_CLOSED on the response only means we must abort the
4519 * request.
4520 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4521 * with server-close mode means we've completed one request and we
4522 * must re-initialize the server connection.
4523 */
4524
4525 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4526 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4527 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4528 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4529 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4530 channel_auto_close(s->req);
4531 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4532 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4533 channel_auto_close(s->rep);
4534 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4535 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4536 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4537 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4538 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4539 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4540 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4541 channel_auto_close(s->rep);
4542 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4543 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4544 channel_abort(s->req);
4545 channel_auto_close(s->req);
4546 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4547 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4548 }
4549 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4550 txn->rsp.msg_state == HTTP_MSG_DONE &&
4551 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4552 /* server-close: terminate this server connection and
4553 * reinitialize a fresh-new transaction.
4554 */
4555 http_end_txn_clean_session(s);
4556 }
4557
4558 http_silent_debug(__LINE__, s);
4559 return txn->req.msg_state != old_req_state ||
4560 txn->rsp.msg_state != old_res_state;
4561}
4562
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4563/* This function is an analyser which forwards request body (including chunk
4564 * sizes if any). It is called as soon as we must forward, even if we forward
4565 * zero byte. The only situation where it must not be called is when we're in
4566 * tunnel mode and we want to forward till the close. It's used both to forward
4567 * remaining data and to resync after end of body. It expects the msg_state to
4568 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4569 * 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]4570 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4571 * bytes of pending data + the headers if not already done (between sol and sov).
4572 * 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]4573 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4574int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4575{
4576 struct http_txn *txn = &s->txn;
4577 struct http_msg *msg = &s->txn.req;
4578
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4579 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4580 return 0;
4581
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4582 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]4583 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4584 /* Output closed while we were sending data. We must abort and
4585 * wake the other side up.
4586 */
4587 msg->msg_state = HTTP_MSG_ERROR;
4588 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4589 return 1;
4590 }
4591
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4592 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4593 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4594
4595 /* Note that we don't have to send 100-continue back because we don't
4596 * need the data to complete our job, and it's up to the server to
4597 * decide whether to return 100, 417 or anything else in return of
4598 * an "Expect: 100-continue" header.
4599 */
4600
4601 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4602 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4603 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4604 * is still null. We must save the body in msg->next because it
4605 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4606 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4607 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4608
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4609 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4610 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4611 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4612 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4613 }
4614
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4615 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4616 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4617
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4618 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4619 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4620 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4621 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4622 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4623 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4624 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4625 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4626 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4627
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4628 if (msg->msg_state == HTTP_MSG_DATA) {
4629 /* must still forward */
4630 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4631 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4632
4633 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4634 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4635 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4636 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4637 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4638 }
4639 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4640 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4641 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4642 * TRAILERS state.
4643 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4644 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4645
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4646 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4647 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4648 else if (ret < 0) {
4649 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4650 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4651 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]4652 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4653 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4654 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4655 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4656 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4657 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4658 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4659
4660 if (ret == 0)
4661 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4662 else if (ret < 0) {
4663 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4664 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4665 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]4666 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4667 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4668 /* we're in MSG_CHUNK_SIZE now */
4669 }
4670 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4671 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4672
4673 if (ret == 0)
4674 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4675 else if (ret < 0) {
4676 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4677 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4678 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]4679 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4680 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4681 /* we're in HTTP_MSG_DONE now */
4682 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4683 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4684 int old_state = msg->msg_state;
4685
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4686 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4687 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4688 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4689 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4690 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4691 if (http_resync_states(s)) {
4692 /* some state changes occurred, maybe the analyser
4693 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4694 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4695 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4696 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4697 /* request errors are most likely due to
4698 * the server aborting the transfer.
4699 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4700 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4701 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4702 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4703 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4704 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4705 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4706 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4707 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4708
4709 /* If "option abortonclose" is set on the backend, we
4710 * want to monitor the client's connection and forward
4711 * any shutdown notification to the server, which will
4712 * decide whether to close or to go on processing the
4713 * request.
4714 */
4715 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4716 channel_auto_read(req);
4717 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4718 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4719 else if (s->txn.meth == HTTP_METH_POST) {
4720 /* POST requests may require to read extra CRLF
4721 * sent by broken browsers and which could cause
4722 * an RST to be sent upon close on some systems
4723 * (eg: Linux).
4724 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4725 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4726 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4727
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4728 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4729 }
4730 }
4731
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4732 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4733 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4734 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4735 if (!(s->flags & SN_ERR_MASK))
4736 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4737 if (!(s->flags & SN_FINST_MASK)) {
4738 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4739 s->flags |= SN_FINST_H;
4740 else
4741 s->flags |= SN_FINST_D;
4742 }
4743
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4744 s->fe->fe_counters.cli_aborts++;
4745 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4746 if (objt_server(s->target))
4747 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4748
4749 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4750 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4751
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4752 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4753 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4754 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4755
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4756 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4757 * 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]4758 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4759 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4760 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4761
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4762 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4763 * 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]4764 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4765 * modes are already handled by the stream sock layer. We must not do
4766 * this in content-length mode because it could present the MSG_MORE
4767 * flag with the last block of forwarded data, which would cause an
4768 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4769 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4770 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4771 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4772
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4773 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4774 return 0;
4775
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4776 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4777 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4778 if (s->listener->counters)
4779 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4780 return_bad_req_stats_ok:
4781 txn->req.msg_state = HTTP_MSG_ERROR;
4782 if (txn->status) {
4783 /* Note: we don't send any error if some data were already sent */
4784 stream_int_retnclose(req->prod, NULL);
4785 } else {
4786 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4787 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4788 }
4789 req->analysers = 0;
4790 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]4791
4792 if (!(s->flags & SN_ERR_MASK))
4793 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4794 if (!(s->flags & SN_FINST_MASK)) {
4795 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4796 s->flags |= SN_FINST_H;
4797 else
4798 s->flags |= SN_FINST_D;
4799 }
4800 return 0;
4801
4802 aborted_xfer:
4803 txn->req.msg_state = HTTP_MSG_ERROR;
4804 if (txn->status) {
4805 /* Note: we don't send any error if some data were already sent */
4806 stream_int_retnclose(req->prod, NULL);
4807 } else {
4808 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4809 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4810 }
4811 req->analysers = 0;
4812 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4813
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4814 s->fe->fe_counters.srv_aborts++;
4815 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4816 if (objt_server(s->target))
4817 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4818
4819 if (!(s->flags & SN_ERR_MASK))
4820 s->flags |= SN_ERR_SRVCL;
4821 if (!(s->flags & SN_FINST_MASK)) {
4822 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4823 s->flags |= SN_FINST_H;
4824 else
4825 s->flags |= SN_FINST_D;
4826 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4827 return 0;
4828}
4829
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4830/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4831 * processing can continue on next analysers, or zero if it either needs more
4832 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4833 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4834 * when it has nothing left to do, and may remove any analyser when it wants to
4835 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4836 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4837int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4838{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4839 struct http_txn *txn = &s->txn;
4840 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4841 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4842 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4843 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4844 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4845
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4846 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]4847 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4848 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4849 rep,
4850 rep->rex, rep->wex,
4851 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4852 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4853 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4854
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4855 /*
4856 * Now parse the partial (or complete) lines.
4857 * We will check the response syntax, and also join multi-line
4858 * headers. An index of all the lines will be elaborated while
4859 * parsing.
4860 *
4861 * For the parsing, we use a 28 states FSM.
4862 *
4863 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4864 * rep->buf->p = beginning of response
4865 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4866 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4867 * msg->eol = end of current header or line (LF or CRLF)
4868 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4869 */
4870
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4871 /* There's a protected area at the end of the buffer for rewriting
4872 * purposes. We don't want to start to parse the request if the
4873 * protected area is affected, because we may have to move processed
4874 * data later, which is much more complicated.
4875 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4876 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4877 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4878 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4879 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4880 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4881 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4882 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4883 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4884 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4885 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4886 return 0;
4887 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4888 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4889 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4890 }
4891
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4892 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4893 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4894 }
4895
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4896 /* 1: we might have to print this header in debug mode */
4897 if (unlikely((global.mode & MODE_DEBUG) &&
4898 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4899 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4900 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4901
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4902 sol = rep->buf->p;
4903 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4904 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4905
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4906 sol += hdr_idx_first_pos(&txn->hdr_idx);
4907 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4908
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4909 while (cur_idx) {
4910 eol = sol + txn->hdr_idx.v[cur_idx].len;
4911 debug_hdr("srvhdr", s, sol, eol);
4912 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4913 cur_idx = txn->hdr_idx.v[cur_idx].next;
4914 }
4915 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4916
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4917 /*
4918 * Now we quickly check if we have found a full valid response.
4919 * If not so, we check the FD and buffer states before leaving.
4920 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4921 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4922 * responses are checked first.
4923 *
4924 * Depending on whether the client is still there or not, we
4925 * may send an error response back or not. Note that normally
4926 * we should only check for HTTP status there, and check I/O
4927 * errors somewhere else.
4928 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4929
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4930 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4931 /* Invalid response */
4932 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4933 /* we detected a parsing error. We want to archive this response
4934 * in the dedicated proxy area for later troubleshooting.
4935 */
4936 hdr_response_bad:
4937 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4938 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]4939
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4940 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4941 if (objt_server(s->target)) {
4942 objt_server(s->target)->counters.failed_resp++;
4943 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4944 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4945 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4946 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4947 rep->analysers = 0;
4948 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4949 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4950 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4951 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4952
4953 if (!(s->flags & SN_ERR_MASK))
4954 s->flags |= SN_ERR_PRXCOND;
4955 if (!(s->flags & SN_FINST_MASK))
4956 s->flags |= SN_FINST_H;
4957
4958 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4959 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4960
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4961 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4962 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4963 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4964 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4965 goto hdr_response_bad;
4966 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4967
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4968 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4969 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4970 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4971 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]4972
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4973 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4974 if (objt_server(s->target)) {
4975 objt_server(s->target)->counters.failed_resp++;
4976 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4977 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4978
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4979 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4980 rep->analysers = 0;
4981 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4982 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4983 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4984 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4985
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4986 if (!(s->flags & SN_ERR_MASK))
4987 s->flags |= SN_ERR_SRVCL;
4988 if (!(s->flags & SN_FINST_MASK))
4989 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4990 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4991 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4992
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4993 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4994 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4995 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4996 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]4997
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4998 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4999 if (objt_server(s->target)) {
5000 objt_server(s->target)->counters.failed_resp++;
5001 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5002 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5003
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5004 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5005 rep->analysers = 0;
5006 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5007 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5008 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5009 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5010
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5011 if (!(s->flags & SN_ERR_MASK))
5012 s->flags |= SN_ERR_SRVTO;
5013 if (!(s->flags & SN_FINST_MASK))
5014 s->flags |= SN_FINST_H;
5015 return 0;
5016 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5017
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5018 /* client abort with an abortonclose */
5019 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5020 s->fe->fe_counters.cli_aborts++;
5021 s->be->be_counters.cli_aborts++;
5022 if (objt_server(s->target))
5023 objt_server(s->target)->counters.cli_aborts++;
5024
5025 rep->analysers = 0;
5026 channel_auto_close(rep);
5027
5028 txn->status = 400;
5029 bi_erase(rep);
5030 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5031
5032 if (!(s->flags & SN_ERR_MASK))
5033 s->flags |= SN_ERR_CLICL;
5034 if (!(s->flags & SN_FINST_MASK))
5035 s->flags |= SN_FINST_H;
5036
5037 /* process_session() will take care of the error */
5038 return 0;
5039 }
5040
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5041 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5042 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5043 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5044 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]5045
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5046 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5047 if (objt_server(s->target)) {
5048 objt_server(s->target)->counters.failed_resp++;
5049 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5050 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5051
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5052 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5053 rep->analysers = 0;
5054 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5055 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5056 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5057 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5058
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5059 if (!(s->flags & SN_ERR_MASK))
5060 s->flags |= SN_ERR_SRVCL;
5061 if (!(s->flags & SN_FINST_MASK))
5062 s->flags |= SN_FINST_H;
5063 return 0;
5064 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5065
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5066 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5067 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5068 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5069 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]5070
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5071 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5072 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5073 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5074
5075 if (!(s->flags & SN_ERR_MASK))
5076 s->flags |= SN_ERR_CLICL;
5077 if (!(s->flags & SN_FINST_MASK))
5078 s->flags |= SN_FINST_H;
5079
5080 /* process_session() will take care of the error */
5081 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5082 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5083
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5084 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5085 return 0;
5086 }
5087
5088 /* More interesting part now : we know that we have a complete
5089 * response which at least looks like HTTP. We have an indicator
5090 * of each header's length, so we can parse them quickly.
5091 */
5092
5093 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5094 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]5095
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5096 /*
5097 * 1: get the status code
5098 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5099 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5100 if (n < 1 || n > 5)
5101 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5102 /* when the client triggers a 4xx from the server, it's most often due
5103 * to a missing object or permission. These events should be tracked
5104 * because if they happen often, it may indicate a brute force or a
5105 * vulnerability scan.
5106 */
5107 if (n == 4)
5108 session_inc_http_err_ctr(s);
5109
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5110 if (objt_server(s->target))
5111 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5112
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5113 /* check if the response is HTTP/1.1 or above */
5114 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5115 ((rep->buf->p[5] > '1') ||
5116 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5117 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5118
5119 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5120 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]5121
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5122 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5123 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5124
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5125 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]5126
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5127 /* Adjust server's health based on status code. Note: status codes 501
5128 * and 505 are triggered on demand by client request, so we must not
5129 * count them as server failures.
5130 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5131 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5132 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5133 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5134 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5135 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5136 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5137
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5138 /*
5139 * 2: check for cacheability.
5140 */
5141
5142 switch (txn->status) {
5143 case 200:
5144 case 203:
5145 case 206:
5146 case 300:
5147 case 301:
5148 case 410:
5149 /* RFC2616 @13.4:
5150 * "A response received with a status code of
5151 * 200, 203, 206, 300, 301 or 410 MAY be stored
5152 * by a cache (...) unless a cache-control
5153 * directive prohibits caching."
5154 *
5155 * RFC2616 @9.5: POST method :
5156 * "Responses to this method are not cacheable,
5157 * unless the response includes appropriate
5158 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5159 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5160 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5161 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5162 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5163 break;
5164 default:
5165 break;
5166 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5167
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5168 /*
5169 * 3: we may need to capture headers
5170 */
5171 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5172 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5173 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5174 txn->rsp.cap, s->fe->rsp_cap);
5175
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5176 /* 4: determine the transfer-length.
5177 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5178 * the presence of a message-body in a RESPONSE and its transfer length
5179 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5180 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5181 * All responses to the HEAD request method MUST NOT include a
5182 * message-body, even though the presence of entity-header fields
5183 * might lead one to believe they do. All 1xx (informational), 204
5184 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5185 * message-body. All other responses do include a message-body,
5186 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5187 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5188 * 1. Any response which "MUST NOT" include a message-body (such as the
5189 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5190 * always terminated by the first empty line after the header fields,
5191 * regardless of the entity-header fields present in the message.
5192 *
5193 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5194 * the "chunked" transfer-coding (Section 6.2) is used, the
5195 * transfer-length is defined by the use of this transfer-coding.
5196 * If a Transfer-Encoding header field is present and the "chunked"
5197 * transfer-coding is not present, the transfer-length is defined by
5198 * the sender closing the connection.
5199 *
5200 * 3. If a Content-Length header field is present, its decimal value in
5201 * OCTETs represents both the entity-length and the transfer-length.
5202 * If a message is received with both a Transfer-Encoding header
5203 * field and a Content-Length header field, the latter MUST be ignored.
5204 *
5205 * 4. If the message uses the media type "multipart/byteranges", and
5206 * the transfer-length is not otherwise specified, then this self-
5207 * delimiting media type defines the transfer-length. This media
5208 * type MUST NOT be used unless the sender knows that the recipient
5209 * can parse it; the presence in a request of a Range header with
5210 * multiple byte-range specifiers from a 1.1 client implies that the
5211 * client can parse multipart/byteranges responses.
5212 *
5213 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5214 */
5215
5216 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5217 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5218 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5219 * FIXME: should we parse anyway and return an error on chunked encoding ?
5220 */
5221 if (txn->meth == HTTP_METH_HEAD ||
5222 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5223 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5224 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5225 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5226 goto skip_content_length;
5227 }
5228
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5229 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5230 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5231 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5232 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5233 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5234 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5235 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5236 /* bad transfer-encoding (chunked followed by something else) */
5237 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5238 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5239 break;
5240 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5241 }
5242
5243 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5244 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5245 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5246 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5247 signed long long cl;
5248
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5249 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5250 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5251 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5252 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5253
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5254 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5255 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5256 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5257 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5258
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5259 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5260 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5261 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5262 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5263
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5264 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5265 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5266 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5267 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5268
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5269 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5270 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5271 }
5272
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5273 if (s->fe->comp || s->be->comp)
5274 select_compression_response_header(s, rep->buf);
5275
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5276 /* FIXME: we should also implement the multipart/byterange method.
5277 * For now on, we resort to close mode in this case (unknown length).
5278 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5279skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5280
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5281 /* end of job, return OK */
5282 rep->analysers &= ~an_bit;
5283 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5284 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5285 return 1;
5286}
5287
5288/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5289 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5290 * and updates t->rep->analysers. It might make sense to explode it into several
5291 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5292 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5293int 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]5294{
5295 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5296 struct http_msg *msg = &txn->rsp;
5297 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5298 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5299
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5300 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]5301 now_ms, __FUNCTION__,
5302 t,
5303 rep,
5304 rep->rex, rep->wex,
5305 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5306 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5307 rep->analysers);
5308
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5309 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5310 return 0;
5311
5312 rep->analysers &= ~an_bit;
5313 rep->analyse_exp = TICK_ETERNITY;
5314
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5315 /* Now we have to check if we need to modify the Connection header.
5316 * This is more difficult on the response than it is on the request,
5317 * because we can have two different HTTP versions and we don't know
5318 * how the client will interprete a response. For instance, let's say
5319 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5320 * HTTP/1.1 response without any header. Maybe it will bound itself to
5321 * HTTP/1.0 because it only knows about it, and will consider the lack
5322 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5323 * the lack of header as a keep-alive. Thus we will use two flags
5324 * indicating how a request MAY be understood by the client. In case
5325 * of multiple possibilities, we'll fix the header to be explicit. If
5326 * ambiguous cases such as both close and keepalive are seen, then we
5327 * will fall back to explicit close. Note that we won't take risks with
5328 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5329 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5330 */
5331
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5332 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5333 txn->status == 101)) {
5334 /* Either we've established an explicit tunnel, or we're
5335 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5336 * to understand the next protocols. We have to switch to tunnel
5337 * mode, so that we transfer the request and responses then let
5338 * this protocol pass unmodified. When we later implement specific
5339 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5340 * header which contains information about that protocol for
5341 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5342 */
5343 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5344 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5345 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5346 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5347 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5348 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5349
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5350 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5351 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5352 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5353 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5354
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5355 /* now adjust header transformations depending on current state */
5356 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5357 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5358 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5359 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5360 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5361 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5362 else { /* SCL / KAL */
5363 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5364 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5365 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5366 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5367
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5368 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5369 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5370
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5371 /* Some keep-alive responses are converted to Server-close if
5372 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5373 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5374 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5375 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5376 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5377 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5378 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5379 }
5380
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5381 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5382 /*
5383 * 3: we will have to evaluate the filters.
5384 * As opposed to version 1.2, now they will be evaluated in the
5385 * filters order and not in the header order. This means that
5386 * each filter has to be validated among all headers.
5387 *
5388 * Filters are tried with ->be first, then with ->fe if it is
5389 * different from ->be.
5390 */
5391
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5392 cur_proxy = t->be;
5393 while (1) {
5394 struct proxy *rule_set = cur_proxy;
5395
5396 /* try headers filters */
5397 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5398 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5399 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5400 if (objt_server(t->target)) {
5401 objt_server(t->target)->counters.failed_resp++;
5402 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5403 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5404 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5405 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5406 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5407 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5408 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5409 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5410 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5411 if (!(t->flags & SN_ERR_MASK))
5412 t->flags |= SN_ERR_PRXCOND;
5413 if (!(t->flags & SN_FINST_MASK))
5414 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5415 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5416 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5417 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5418
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5419 /* has the response been denied ? */
5420 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5421 if (objt_server(t->target))
5422 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5423
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5424 t->be->be_counters.denied_resp++;
5425 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5426 if (t->listener->counters)
5427 t->listener->counters->denied_resp++;
5428
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5429 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5430 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5431
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5432 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5433 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5434 if (txn->status < 200)
5435 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5436 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5437 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]5438 ret = acl_pass(ret);
5439 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5440 ret = !ret;
5441 if (!ret)
5442 continue;
5443 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5444 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5445 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5446 }
5447
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5448 /* check whether we're already working on the frontend */
5449 if (cur_proxy == t->fe)
5450 break;
5451 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5452 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5453
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5454 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5455 * We may be facing a 100-continue response, in which case this
5456 * is not the right response, and we're waiting for the next one.
5457 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5458 * next one.
5459 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5460 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5461 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5462 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5463 msg->msg_state = HTTP_MSG_RPBEFORE;
5464 txn->status = 0;
5465 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5466 return 1;
5467 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5468 else if (unlikely(txn->status < 200))
5469 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5470
5471 /* we don't have any 1xx status code now */
5472
5473 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5474 * 4: check for server cookie.
5475 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5476 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5477 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5478 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5479
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5480
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5481 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5482 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5483 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5484 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]5485 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5486
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5487 /*
5488 * 6: add server cookie in the response if needed
5489 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5490 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5491 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5492 (!(t->flags & SN_DIRECT) ||
5493 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5494 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5495 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5496 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5497 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5498 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5499 /* the server is known, it's not the one the client requested, or the
5500 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5501 * insert a set-cookie here, except if we want to insert only on POST
5502 * requests and this one isn't. Note that servers which don't have cookies
5503 * (eg: some backup servers) will return a full cookie removal request.
5504 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5505 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5506 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5507 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5508 t->be->cookie_name);
5509 }
5510 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5511 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]5512
5513 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5514 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5515 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5516 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5517 trash.len += 5;
5518
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5519 if (t->be->cookie_maxlife) {
5520 /* emit first_date, which is either the original one or
5521 * the current date.
5522 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5523 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5524 s30tob64(txn->cookie_first_date ?
5525 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5526 (date.tv_sec+3) >> 2, trash.str + trash.len);
5527 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5528 }
5529 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5530 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5531 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5532
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5533 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5534 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5535
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5536 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5537 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5538
5539 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5540 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5541
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5542 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]5543 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5544
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5545 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5546 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5547 /* the server did not change, only the date was updated */
5548 txn->flags |= TX_SCK_UPDATED;
5549 else
5550 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5551
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5552 /* Here, we will tell an eventual cache on the client side that we don't
5553 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5554 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5555 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5556 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5557 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5558
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5559 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5560
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5561 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5562 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5563 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5564 }
5565 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5566
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5567 /*
5568 * 7: check if result will be cacheable with a cookie.
5569 * We'll block the response if security checks have caught
5570 * nasty things such as a cacheable cookie.
5571 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5572 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5573 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5574 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5575
5576 /* we're in presence of a cacheable response containing
5577 * a set-cookie header. We'll block it as requested by
5578 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5579 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5580 if (objt_server(t->target))
5581 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5582
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5583 t->be->be_counters.denied_resp++;
5584 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5585 if (t->listener->counters)
5586 t->listener->counters->denied_resp++;
5587
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5588 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5589 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5590 send_log(t->be, LOG_ALERT,
5591 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5592 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5593 goto return_srv_prx_502;
5594 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5595
5596 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5597 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5598 * If an "Upgrade" token is found, the header is left untouched in order
5599 * not to have to deal with some client bugs : some of them fail an upgrade
5600 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5601 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5602 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5603 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5604 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5605 unsigned int want_flags = 0;
5606
5607 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5608 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5609 /* we want a keep-alive response here. Keep-alive header
5610 * required if either side is not 1.1.
5611 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5612 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5613 want_flags |= TX_CON_KAL_SET;
5614 }
5615 else {
5616 /* we want a close response here. Close header required if
5617 * the server is 1.1, regardless of the client.
5618 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5619 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5620 want_flags |= TX_CON_CLO_SET;
5621 }
5622
5623 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5624 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5625 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5626
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5627 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5628 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5629 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5630 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5631
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5632 /*************************************************************
5633 * OK, that's finished for the headers. We have done what we *
5634 * could. Let's switch to the DATA state. *
5635 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5636
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5637 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5638
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5639 /* if the user wants to log as soon as possible, without counting
5640 * bytes from the server, then this is the right moment. We have
5641 * to temporarily assign bytes_out to log what we currently have.
5642 */
5643 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5644 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5645 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5646 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5647 t->logs.bytes_out = 0;
5648 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5649
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5650 /* Note: we must not try to cheat by jumping directly to DATA,
5651 * otherwise we would not let the client side wake up.
5652 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5653
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5654 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5655 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5656 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5657}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5658
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5659/* This function is an analyser which forwards response body (including chunk
5660 * sizes if any). It is called as soon as we must forward, even if we forward
5661 * zero byte. The only situation where it must not be called is when we're in
5662 * tunnel mode and we want to forward till the close. It's used both to forward
5663 * remaining data and to resync after end of body. It expects the msg_state to
5664 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5665 * 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]5666 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5667 * bytes of pending data + the headers if not already done (between sol and sov).
5668 * 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]5669 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5670int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5671{
5672 struct http_txn *txn = &s->txn;
5673 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5674 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5675 static struct buffer *tmpbuf = NULL;
5676 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5677 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5678
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5679 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5680 return 0;
5681
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5682 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]5683 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5684 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5685 /* Output closed while we were sending data. We must abort and
5686 * wake the other side up.
5687 */
5688 msg->msg_state = HTTP_MSG_ERROR;
5689 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5690 return 1;
5691 }
5692
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5693 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5694 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5695
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5696 /* this is the first time we need the compression buffer */
5697 if (s->comp_algo != NULL && tmpbuf == NULL) {
5698 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5699 goto aborted_xfer; /* no memory */
5700 }
5701
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5702 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5703 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5704 * rep->buf.p still points to the beginning of the message and msg->sol
5705 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5706 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5707 channel_forward(res, msg->sov);
5708 msg->next = 0;
5709 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5710
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5711 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5712 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5713 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5714 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5715 }
5716
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5717 if (s->comp_algo != NULL) {
5718 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5719 if (ret < 0)
5720 goto missing_data; /* not enough spaces in buffers */
5721 compressing = 1;
5722 }
5723
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5724 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5725 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5726 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5727 if (s->comp_algo == NULL) {
5728 bytes = msg->sov - msg->sol;
5729 if (msg->chunk_len || bytes) {
5730 msg->sol = msg->sov;
5731 msg->next -= bytes; /* will be forwarded */
5732 msg->chunk_len += bytes;
5733 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5734 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5735 }
5736
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5737 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5738 int ret;
5739
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5740 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5741 if (compressing) {
5742 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5743 if (ret < 0)
5744 goto aborted_xfer;
5745 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5746
5747 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5748 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5749
5750 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5751 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5752 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5753 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5754 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5755 if (compressing && consumed_data) {
5756 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5757 compressing = 0;
5758 }
5759 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5760 }
5761 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5762 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5763 * set ->sov and ->next to point to the body and switch to DATA or
5764 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5765 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5766 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5767
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5768 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5769 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5770 else if (ret < 0) {
5771 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5772 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]5773 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5774 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5775 if (compressing) {
5776 if (likely(msg->chunk_len > 0)) {
5777 /* skipping data if we are in compression mode */
5778 b_adv(res->buf, msg->next);
5779 msg->next = 0;
5780 msg->sov = 0;
5781 msg->sol = 0;
5782 } else {
5783 if (consumed_data) {
5784 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5785 compressing = 0;
5786 }
5787 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5788 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5789 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5790 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5791 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5792 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5793 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5794
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5795 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5796 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5797 else if (ret < 0) {
5798 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5799 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]5800 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5801 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5802 /* skipping data in buffer for compression */
5803 if (compressing) {
5804 b_adv(res->buf, msg->next);
5805 msg->next = 0;
5806 msg->sov = 0;
5807 msg->sol = 0;
5808 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5809 /* we're in MSG_CHUNK_SIZE now */
5810 }
5811 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5812 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5813
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5814 if (ret == 0)
5815 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5816 else if (ret < 0) {
5817 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5818 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]5819 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5820 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5821 if (s->comp_algo != NULL) {
5822 /* forwarding trailers */
5823 channel_forward(res, msg->next);
5824 msg->next = 0;
5825 }
5826 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5827 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5828 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5829 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5830 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5831 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5832 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5833 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5834 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5835 if (http_resync_states(s)) {
5836 http_silent_debug(__LINE__, s);
5837 /* some state changes occurred, maybe the analyser
5838 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5839 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5840 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5841 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5842 /* response errors are most likely due to
5843 * the client aborting the transfer.
5844 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5845 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5846 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5847 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5848 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5849 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5850 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5851 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5852 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5853 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5854 }
5855 }
5856
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5857 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5858 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5859 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5860 compressing = 0;
5861 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5862
5863 if (res->flags & CF_SHUTW)
5864 goto aborted_xfer;
5865
5866 /* stop waiting for data if the input is closed before the end. If the
5867 * client side was already closed, it means that the client has aborted,
5868 * so we don't want to count this as a server abort. Otherwise it's a
5869 * server abort.
5870 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5871 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5872 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5873 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5874 if (!(s->flags & SN_ERR_MASK))
5875 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5876 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5877 if (objt_server(s->target))
5878 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5879 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5880 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5881
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5882 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5883 if (!s->req->analysers)
5884 goto return_bad_res;
5885
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5886 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5887 if (s->comp_algo == NULL) {
5888 bytes = msg->sov - msg->sol;
5889 if (msg->chunk_len || bytes) {
5890 msg->sol = msg->sov;
5891 msg->next -= bytes; /* will be forwarded */
5892 msg->chunk_len += bytes;
5893 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5894 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5895 }
5896
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5897 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5898 * 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]5899 * Similarly, with keep-alive on the client side, we don't want to forward a
5900 * close.
5901 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5902 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5903 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5904 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5905 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5906
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5907 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5908 * 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]5909 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5910 * modes are already handled by the stream sock layer. We must not do
5911 * this in content-length mode because it could present the MSG_MORE
5912 * flag with the last block of forwarded data, which would cause an
5913 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5914 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5915 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5916 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5917
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5918 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5919 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5920 return 0;
5921
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5922 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5923 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5924 if (objt_server(s->target))
5925 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5926
5927 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5928 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5929 /* don't send any error message as we're in the body */
5930 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5931 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5932 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]5933 if (objt_server(s->target))
5934 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5935
5936 if (!(s->flags & SN_ERR_MASK))
5937 s->flags |= SN_ERR_PRXCOND;
5938 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5939 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5940 return 0;
5941
5942 aborted_xfer:
5943 txn->rsp.msg_state = HTTP_MSG_ERROR;
5944 /* don't send any error message as we're in the body */
5945 stream_int_retnclose(res->cons, NULL);
5946 res->analysers = 0;
5947 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5948
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5949 s->fe->fe_counters.cli_aborts++;
5950 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5951 if (objt_server(s->target))
5952 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5953
5954 if (!(s->flags & SN_ERR_MASK))
5955 s->flags |= SN_ERR_CLICL;
5956 if (!(s->flags & SN_FINST_MASK))
5957 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5958 return 0;
5959}
5960
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5961/* Iterate the same filter through all request headers.
5962 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5963 * Since it can manage the switch to another backend, it updates the per-proxy
5964 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5965 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5966int 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]5967{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5968 char term;
5969 char *cur_ptr, *cur_end, *cur_next;
5970 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5971 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5972 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5973 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5974
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5975 last_hdr = 0;
5976
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5977 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5978 old_idx = 0;
5979
5980 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5981 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5982 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5983 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5984 (exp->action == ACT_ALLOW ||
5985 exp->action == ACT_DENY ||
5986 exp->action == ACT_TARPIT))
5987 return 0;
5988
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5989 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5990 if (!cur_idx)
5991 break;
5992
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5993 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5994 cur_ptr = cur_next;
5995 cur_end = cur_ptr + cur_hdr->len;
5996 cur_next = cur_end + cur_hdr->cr + 1;
5997
5998 /* Now we have one header between cur_ptr and cur_end,
5999 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6000 */
6001
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6002 /* The annoying part is that pattern matching needs
6003 * that we modify the contents to null-terminate all
6004 * strings before testing them.
6005 */
6006
6007 term = *cur_end;
6008 *cur_end = '\0';
6009
6010 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6011 switch (exp->action) {
6012 case ACT_SETBE:
6013 /* It is not possible to jump a second time.
6014 * FIXME: should we return an HTTP/500 here so that
6015 * the admin knows there's a problem ?
6016 */
6017 if (t->be != t->fe)
6018 break;
6019
6020 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6021 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6022 last_hdr = 1;
6023 break;
6024
6025 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6026 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6027 last_hdr = 1;
6028 break;
6029
6030 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6031 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6032 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6033
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6034 t->fe->fe_counters.denied_req++;
6035 if (t->fe != t->be)
6036 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6037 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6038 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6039
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6040 break;
6041
6042 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6043 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6044 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6045
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6046 t->fe->fe_counters.denied_req++;
6047 if (t->fe != t->be)
6048 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6049 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6050 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6051
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6052 break;
6053
6054 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6055 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6056 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6057 /* FIXME: if the user adds a newline in the replacement, the
6058 * index will not be recalculated for now, and the new line
6059 * will not be counted as a new header.
6060 */
6061
6062 cur_end += delta;
6063 cur_next += delta;
6064 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6065 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6066 break;
6067
6068 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6069 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6070 cur_next += delta;
6071
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6072 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6073 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6074 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6075 cur_hdr->len = 0;
6076 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6077 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6078 break;
6079
6080 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6081 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6082 if (cur_end)
6083 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6084
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6085 /* keep the link from this header to next one in case of later
6086 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6087 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6088 old_idx = cur_idx;
6089 }
6090 return 0;
6091}
6092
6093
6094/* Apply the filter to the request line.
6095 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6096 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6097 * Since it can manage the switch to another backend, it updates the per-proxy
6098 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6099 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6100int 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]6101{
6102 char term;
6103 char *cur_ptr, *cur_end;
6104 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6105 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6106 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6107
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6108 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6109 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6110 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6111 (exp->action == ACT_ALLOW ||
6112 exp->action == ACT_DENY ||
6113 exp->action == ACT_TARPIT))
6114 return 0;
6115 else if (exp->action == ACT_REMOVE)
6116 return 0;
6117
6118 done = 0;
6119
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6120 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6121 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6122
6123 /* Now we have the request line between cur_ptr and cur_end */
6124
6125 /* The annoying part is that pattern matching needs
6126 * that we modify the contents to null-terminate all
6127 * strings before testing them.
6128 */
6129
6130 term = *cur_end;
6131 *cur_end = '\0';
6132
6133 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6134 switch (exp->action) {
6135 case ACT_SETBE:
6136 /* It is not possible to jump a second time.
6137 * FIXME: should we return an HTTP/500 here so that
6138 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6139 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6140 if (t->be != t->fe)
6141 break;
6142
6143 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6144 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6145 done = 1;
6146 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6147
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6148 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6149 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6150 done = 1;
6151 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6152
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6153 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6154 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6155
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6156 t->fe->fe_counters.denied_req++;
6157 if (t->fe != t->be)
6158 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6159 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6160 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6161
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6162 done = 1;
6163 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6164
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6165 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6166 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6167
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6168 t->fe->fe_counters.denied_req++;
6169 if (t->fe != t->be)
6170 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6171 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6172 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6173
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6174 done = 1;
6175 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6176
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6177 case ACT_REPLACE:
6178 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6179 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6180 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6181 /* FIXME: if the user adds a newline in the replacement, the
6182 * index will not be recalculated for now, and the new line
6183 * will not be counted as a new header.
6184 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6185
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6186 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6187 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6188 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6189 HTTP_MSG_RQMETH,
6190 cur_ptr, cur_end + 1,
6191 NULL, NULL);
6192 if (unlikely(!cur_end))
6193 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6194
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6195 /* we have a full request and we know that we have either a CR
6196 * or an LF at <ptr>.
6197 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6198 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6199 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]6200 /* there is no point trying this regex on headers */
6201 return 1;
6202 }
6203 }
6204 *cur_end = term; /* restore the string terminator */
6205 return done;
6206}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6207
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6208
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6209
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6210/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6211 * 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]6212 * 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]6213 * unparsable request. Since it can manage the switch to another backend, it
6214 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6215 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6216int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6217{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6218 struct http_txn *txn = &s->txn;
6219 struct hdr_exp *exp;
6220
6221 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6222 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6223
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6224 /*
6225 * The interleaving of transformations and verdicts
6226 * makes it difficult to decide to continue or stop
6227 * the evaluation.
6228 */
6229
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6230 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6231 break;
6232
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6233 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6234 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6235 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6236 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6237
6238 /* if this filter had a condition, evaluate it now and skip to
6239 * next filter if the condition does not match.
6240 */
6241 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6242 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]6243 ret = acl_pass(ret);
6244 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6245 ret = !ret;
6246
6247 if (!ret)
6248 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6249 }
6250
6251 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6252 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6253 if (unlikely(ret < 0))
6254 return -1;
6255
6256 if (likely(ret == 0)) {
6257 /* The filter did not match the request, it can be
6258 * iterated through all headers.
6259 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6260 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6261 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6262 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6263 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6264}
6265
6266
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6267
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6268/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6269 * Try to retrieve the server associated to the appsession.
6270 * If the server is found, it's assigned to the session.
6271 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6272void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6273 struct http_txn *txn = &t->txn;
6274 appsess *asession = NULL;
6275 char *sessid_temp = NULL;
6276
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6277 if (len > t->be->appsession_len) {
6278 len = t->be->appsession_len;
6279 }
6280
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6281 if (t->be->options2 & PR_O2_AS_REQL) {
6282 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6283 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6284 /* 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]6285 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6286 }
6287
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6288 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6289 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6290 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6291 return;
6292 }
6293
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6294 memcpy(txn->sessid, buf, len);
6295 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6296 }
6297
6298 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6299 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6300 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6301 return;
6302 }
6303
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6304 memcpy(sessid_temp, buf, len);
6305 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6306
6307 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6308 /* free previously allocated memory */
6309 pool_free2(apools.sessid, sessid_temp);
6310
6311 if (asession != NULL) {
6312 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6313 if (!(t->be->options2 & PR_O2_AS_REQL))
6314 asession->request_count++;
6315
6316 if (asession->serverid != NULL) {
6317 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6318
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6319 while (srv) {
6320 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6321 if ((srv->state & SRV_RUNNING) ||
6322 (t->be->options & PR_O_PERSIST) ||
6323 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6324 /* we found the server and it's usable */
6325 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6326 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6327 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6328 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6329
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6330 break;
6331 } else {
6332 txn->flags &= ~TX_CK_MASK;
6333 txn->flags |= TX_CK_DOWN;
6334 }
6335 }
6336 srv = srv->next;
6337 }
6338 }
6339 }
6340}
6341
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6342/* Find the end of a cookie value contained between <s> and <e>. It works the
6343 * same way as with headers above except that the semi-colon also ends a token.
6344 * See RFC2965 for more information. Note that it requires a valid header to
6345 * return a valid result.
6346 */
6347char *find_cookie_value_end(char *s, const char *e)
6348{
6349 int quoted, qdpair;
6350
6351 quoted = qdpair = 0;
6352 for (; s < e; s++) {
6353 if (qdpair) qdpair = 0;
6354 else if (quoted) {
6355 if (*s == '\\') qdpair = 1;
6356 else if (*s == '"') quoted = 0;
6357 }
6358 else if (*s == '"') quoted = 1;
6359 else if (*s == ',' || *s == ';') return s;
6360 }
6361 return s;
6362}
6363
6364/* Delete a value in a header between delimiters <from> and <next> in buffer
6365 * <buf>. The number of characters displaced is returned, and the pointer to
6366 * the first delimiter is updated if required. The function tries as much as
6367 * possible to respect the following principles :
6368 * - replace <from> delimiter by the <next> one unless <from> points to a
6369 * colon, in which case <next> is simply removed
6370 * - set exactly one space character after the new first delimiter, unless
6371 * there are not enough characters in the block being moved to do so.
6372 * - remove unneeded spaces before the previous delimiter and after the new
6373 * one.
6374 *
6375 * It is the caller's responsibility to ensure that :
6376 * - <from> points to a valid delimiter or the colon ;
6377 * - <next> points to a valid delimiter or the final CR/LF ;
6378 * - there are non-space chars before <from> ;
6379 * - there is a CR/LF at or after <next>.
6380 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6381int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6382{
6383 char *prev = *from;
6384
6385 if (*prev == ':') {
6386 /* We're removing the first value, preserve the colon and add a
6387 * space if possible.
6388 */
6389 if (!http_is_crlf[(unsigned char)*next])
6390 next++;
6391 prev++;
6392 if (prev < next)
6393 *prev++ = ' ';
6394
6395 while (http_is_spht[(unsigned char)*next])
6396 next++;
6397 } else {
6398 /* Remove useless spaces before the old delimiter. */
6399 while (http_is_spht[(unsigned char)*(prev-1)])
6400 prev--;
6401 *from = prev;
6402
6403 /* copy the delimiter and if possible a space if we're
6404 * not at the end of the line.
6405 */
6406 if (!http_is_crlf[(unsigned char)*next]) {
6407 *prev++ = *next++;
6408 if (prev + 1 < next)
6409 *prev++ = ' ';
6410 while (http_is_spht[(unsigned char)*next])
6411 next++;
6412 }
6413 }
6414 return buffer_replace2(buf, prev, next, NULL, 0);
6415}
6416
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6417/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6418 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6419 * desirable to call it only when needed. This code is quite complex because
6420 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6421 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6422 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6423void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6424{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6425 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6426 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6427 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6428 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6429 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6430
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6431 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6432 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6433 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6434
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6435 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6436 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6437 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6438
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6439 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6440 hdr_beg = hdr_next;
6441 hdr_end = hdr_beg + cur_hdr->len;
6442 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6443
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6444 /* We have one full header between hdr_beg and hdr_end, and the
6445 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6446 * "Cookie:" headers.
6447 */
6448
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6449 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6450 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6451 old_idx = cur_idx;
6452 continue;
6453 }
6454
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6455 del_from = NULL; /* nothing to be deleted */
6456 preserve_hdr = 0; /* assume we may kill the whole header */
6457
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6458 /* Now look for cookies. Conforming to RFC2109, we have to support
6459 * attributes whose name begin with a '$', and associate them with
6460 * the right cookie, if we want to delete this cookie.
6461 * So there are 3 cases for each cookie read :
6462 * 1) it's a special attribute, beginning with a '$' : ignore it.
6463 * 2) it's a server id cookie that we *MAY* want to delete : save
6464 * some pointers on it (last semi-colon, beginning of cookie...)
6465 * 3) it's an application cookie : we *MAY* have to delete a previous
6466 * "special" cookie.
6467 * At the end of loop, if a "special" cookie remains, we may have to
6468 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6469 * *MUST* delete it.
6470 *
6471 * Note: RFC2965 is unclear about the processing of spaces around
6472 * the equal sign in the ATTR=VALUE form. A careful inspection of
6473 * the RFC explicitly allows spaces before it, and not within the
6474 * tokens (attrs or values). An inspection of RFC2109 allows that
6475 * too but section 10.1.3 lets one think that spaces may be allowed
6476 * after the equal sign too, resulting in some (rare) buggy
6477 * implementations trying to do that. So let's do what servers do.
6478 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6479 * allowed quoted strings in values, with any possible character
6480 * after a backslash, including control chars and delimitors, which
6481 * causes parsing to become ambiguous. Browsers also allow spaces
6482 * within values even without quotes.
6483 *
6484 * We have to keep multiple pointers in order to support cookie
6485 * removal at the beginning, middle or end of header without
6486 * corrupting the header. All of these headers are valid :
6487 *
6488 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6489 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6490 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6491 * | | | | | | | | |
6492 * | | | | | | | | hdr_end <--+
6493 * | | | | | | | +--> next
6494 * | | | | | | +----> val_end
6495 * | | | | | +-----------> val_beg
6496 * | | | | +--------------> equal
6497 * | | | +----------------> att_end
6498 * | | +---------------------> att_beg
6499 * | +--------------------------> prev
6500 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6501 */
6502
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6503 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6504 /* Iterate through all cookies on this line */
6505
6506 /* find att_beg */
6507 att_beg = prev + 1;
6508 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6509 att_beg++;
6510
6511 /* find att_end : this is the first character after the last non
6512 * space before the equal. It may be equal to hdr_end.
6513 */
6514 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6515
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6516 while (equal < hdr_end) {
6517 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6518 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6519 if (http_is_spht[(unsigned char)*equal++])
6520 continue;
6521 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6522 }
6523
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6524 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6525 * is between <att_beg> and <equal>, both may be identical.
6526 */
6527
6528 /* look for end of cookie if there is an equal sign */
6529 if (equal < hdr_end && *equal == '=') {
6530 /* look for the beginning of the value */
6531 val_beg = equal + 1;
6532 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6533 val_beg++;
6534
6535 /* find the end of the value, respecting quotes */
6536 next = find_cookie_value_end(val_beg, hdr_end);
6537
6538 /* make val_end point to the first white space or delimitor after the value */
6539 val_end = next;
6540 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6541 val_end--;
6542 } else {
6543 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6544 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6545
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6546 /* We have nothing to do with attributes beginning with '$'. However,
6547 * they will automatically be removed if a header before them is removed,
6548 * since they're supposed to be linked together.
6549 */
6550 if (*att_beg == '$')
6551 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6552
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6553 /* Ignore cookies with no equal sign */
6554 if (equal == next) {
6555 /* This is not our cookie, so we must preserve it. But if we already
6556 * scheduled another cookie for removal, we cannot remove the
6557 * complete header, but we can remove the previous block itself.
6558 */
6559 preserve_hdr = 1;
6560 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6561 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6562 val_end += delta;
6563 next += delta;
6564 hdr_end += delta;
6565 hdr_next += delta;
6566 cur_hdr->len += delta;
6567 http_msg_move_end(&txn->req, delta);
6568 prev = del_from;
6569 del_from = NULL;
6570 }
6571 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6572 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6573
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6574 /* if there are spaces around the equal sign, we need to
6575 * strip them otherwise we'll get trouble for cookie captures,
6576 * or even for rewrites. Since this happens extremely rarely,
6577 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6578 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6579 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6580 int stripped_before = 0;
6581 int stripped_after = 0;
6582
6583 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6584 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6585 equal += stripped_before;
6586 val_beg += stripped_before;
6587 }
6588
6589 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6590 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6591 val_beg += stripped_after;
6592 stripped_before += stripped_after;
6593 }
6594
6595 val_end += stripped_before;
6596 next += stripped_before;
6597 hdr_end += stripped_before;
6598 hdr_next += stripped_before;
6599 cur_hdr->len += stripped_before;
6600 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6601 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6602 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6603
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6604 /* First, let's see if we want to capture this cookie. We check
6605 * that we don't already have a client side cookie, because we
6606 * can only capture one. Also as an optimisation, we ignore
6607 * cookies shorter than the declared name.
6608 */
6609 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6610 (val_end - att_beg >= t->fe->capture_namelen) &&
6611 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6612 int log_len = val_end - att_beg;
6613
6614 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6615 Alert("HTTP logging : out of memory.\n");
6616 } else {
6617 if (log_len > t->fe->capture_len)
6618 log_len = t->fe->capture_len;
6619 memcpy(txn->cli_cookie, att_beg, log_len);
6620 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6621 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6622 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6623
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6624 /* Persistence cookies in passive, rewrite or insert mode have the
6625 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6626 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6627 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6628 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6629 * For cookies in prefix mode, the form is :
6630 *
6631 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6632 */
6633 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6634 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6635 struct server *srv = t->be->srv;
6636 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6637
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6638 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6639 * have the server ID between val_beg and delim, and the original cookie between
6640 * delim+1 and val_end. Otherwise, delim==val_end :
6641 *
6642 * Cookie: NAME=SRV; # in all but prefix modes
6643 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6644 * | || || | |+-> next
6645 * | || || | +--> val_end
6646 * | || || +---------> delim
6647 * | || |+------------> val_beg
6648 * | || +-------------> att_end = equal
6649 * | |+-----------------> att_beg
6650 * | +------------------> prev
6651 * +-------------------------> hdr_beg
6652 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6653
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6654 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6655 for (delim = val_beg; delim < val_end; delim++)
6656 if (*delim == COOKIE_DELIM)
6657 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6658 } else {
6659 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6660 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6661 /* Now check if the cookie contains a date field, which would
6662 * appear after a vertical bar ('|') just after the server name
6663 * and before the delimiter.
6664 */
6665 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6666 if (vbar1) {
6667 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6668 * right is the last seen date. It is a base64 encoded
6669 * 30-bit value representing the UNIX date since the
6670 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6671 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6672 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6673 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6674 if (val_end - vbar1 >= 5) {
6675 val = b64tos30(vbar1);
6676 if (val > 0)
6677 txn->cookie_last_date = val << 2;
6678 }
6679 /* look for a second vertical bar */
6680 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6681 if (vbar1 && (val_end - vbar1 > 5)) {
6682 val = b64tos30(vbar1 + 1);
6683 if (val > 0)
6684 txn->cookie_first_date = val << 2;
6685 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6686 }
6687 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6688
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6689 /* if the cookie has an expiration date and the proxy wants to check
6690 * it, then we do that now. We first check if the cookie is too old,
6691 * then only if it has expired. We detect strict overflow because the
6692 * time resolution here is not great (4 seconds). Cookies with dates
6693 * in the future are ignored if their offset is beyond one day. This
6694 * allows an admin to fix timezone issues without expiring everyone
6695 * and at the same time avoids keeping unwanted side effects for too
6696 * long.
6697 */
6698 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6699 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6700 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6701 txn->flags &= ~TX_CK_MASK;
6702 txn->flags |= TX_CK_OLD;
6703 delim = val_beg; // let's pretend we have not found the cookie
6704 txn->cookie_first_date = 0;
6705 txn->cookie_last_date = 0;
6706 }
6707 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6708 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6709 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6710 txn->flags &= ~TX_CK_MASK;
6711 txn->flags |= TX_CK_EXPIRED;
6712 delim = val_beg; // let's pretend we have not found the cookie
6713 txn->cookie_first_date = 0;
6714 txn->cookie_last_date = 0;
6715 }
6716
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6717 /* Here, we'll look for the first running server which supports the cookie.
6718 * This allows to share a same cookie between several servers, for example
6719 * to dedicate backup servers to specific servers only.
6720 * However, to prevent clients from sticking to cookie-less backup server
6721 * when they have incidentely learned an empty cookie, we simply ignore
6722 * empty cookies and mark them as invalid.
6723 * The same behaviour is applied when persistence must be ignored.
6724 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6725 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6726 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6727
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6728 while (srv) {
6729 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6730 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6731 if ((srv->state & SRV_RUNNING) ||
6732 (t->be->options & PR_O_PERSIST) ||
6733 (t->flags & SN_FORCE_PRST)) {
6734 /* we found the server and we can use it */
6735 txn->flags &= ~TX_CK_MASK;
6736 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6737 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6738 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6739 break;
6740 } else {
6741 /* we found a server, but it's down,
6742 * mark it as such and go on in case
6743 * another one is available.
6744 */
6745 txn->flags &= ~TX_CK_MASK;
6746 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6747 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6748 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6749 srv = srv->next;
6750 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6751
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6752 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6753 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6754 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6755 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6756 txn->flags |= TX_CK_UNUSED;
6757 else
6758 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6759 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6760
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6761 /* depending on the cookie mode, we may have to either :
6762 * - delete the complete cookie if we're in insert+indirect mode, so that
6763 * the server never sees it ;
6764 * - remove the server id from the cookie value, and tag the cookie as an
6765 * application cookie so that it does not get accidentely removed later,
6766 * if we're in cookie prefix mode
6767 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6768 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6769 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6770
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6771 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6772 val_end += delta;
6773 next += delta;
6774 hdr_end += delta;
6775 hdr_next += delta;
6776 cur_hdr->len += delta;
6777 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6778
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6779 del_from = NULL;
6780 preserve_hdr = 1; /* we want to keep this cookie */
6781 }
6782 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6783 (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]6784 del_from = prev;
6785 }
6786 } else {
6787 /* This is not our cookie, so we must preserve it. But if we already
6788 * scheduled another cookie for removal, we cannot remove the
6789 * complete header, but we can remove the previous block itself.
6790 */
6791 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6792
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6793 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6794 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6795 if (att_beg >= del_from)
6796 att_beg += delta;
6797 if (att_end >= del_from)
6798 att_end += delta;
6799 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6800 val_end += delta;
6801 next += delta;
6802 hdr_end += delta;
6803 hdr_next += delta;
6804 cur_hdr->len += delta;
6805 http_msg_move_end(&txn->req, delta);
6806 prev = del_from;
6807 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6808 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6809 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6810
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6811 /* Look for the appsession cookie unless persistence must be ignored */
6812 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6813 int cmp_len, value_len;
6814 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6815
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6816 if (t->be->options2 & PR_O2_AS_PFX) {
6817 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6818 value_begin = att_beg + t->be->appsession_name_len;
6819 value_len = val_end - att_beg - t->be->appsession_name_len;
6820 } else {
6821 cmp_len = att_end - att_beg;
6822 value_begin = val_beg;
6823 value_len = val_end - val_beg;
6824 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6825
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6826 /* let's see if the cookie is our appcookie */
6827 if (cmp_len == t->be->appsession_name_len &&
6828 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6829 manage_client_side_appsession(t, value_begin, value_len);
6830 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6831 }
6832
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6833 /* continue with next cookie on this header line */
6834 att_beg = next;
6835 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6836
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6837 /* There are no more cookies on this line.
6838 * We may still have one (or several) marked for deletion at the
6839 * end of the line. We must do this now in two ways :
6840 * - if some cookies must be preserved, we only delete from the
6841 * mark to the end of line ;
6842 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6843 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6844 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6845 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6846 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6847 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6848 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6849 cur_hdr->len += delta;
6850 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6851 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6852
6853 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6854 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6855 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6856 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6857 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6858 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6859 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6860 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6861 }
6862
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6863 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6864 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6865 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6866}
6867
6868
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6869/* Iterate the same filter through all response headers contained in <rtr>.
6870 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6871 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6872int 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]6873{
6874 char term;
6875 char *cur_ptr, *cur_end, *cur_next;
6876 int cur_idx, old_idx, last_hdr;
6877 struct http_txn *txn = &t->txn;
6878 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6879 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6880
6881 last_hdr = 0;
6882
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6883 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6884 old_idx = 0;
6885
6886 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6887 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6888 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6889 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6890 (exp->action == ACT_ALLOW ||
6891 exp->action == ACT_DENY))
6892 return 0;
6893
6894 cur_idx = txn->hdr_idx.v[old_idx].next;
6895 if (!cur_idx)
6896 break;
6897
6898 cur_hdr = &txn->hdr_idx.v[cur_idx];
6899 cur_ptr = cur_next;
6900 cur_end = cur_ptr + cur_hdr->len;
6901 cur_next = cur_end + cur_hdr->cr + 1;
6902
6903 /* Now we have one header between cur_ptr and cur_end,
6904 * and the next header starts at cur_next.
6905 */
6906
6907 /* The annoying part is that pattern matching needs
6908 * that we modify the contents to null-terminate all
6909 * strings before testing them.
6910 */
6911
6912 term = *cur_end;
6913 *cur_end = '\0';
6914
6915 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6916 switch (exp->action) {
6917 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6918 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6919 last_hdr = 1;
6920 break;
6921
6922 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6923 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6924 last_hdr = 1;
6925 break;
6926
6927 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6928 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6929 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6930 /* FIXME: if the user adds a newline in the replacement, the
6931 * index will not be recalculated for now, and the new line
6932 * will not be counted as a new header.
6933 */
6934
6935 cur_end += delta;
6936 cur_next += delta;
6937 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6938 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6939 break;
6940
6941 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6942 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6943 cur_next += delta;
6944
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6945 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6946 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6947 txn->hdr_idx.used--;
6948 cur_hdr->len = 0;
6949 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6950 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6951 break;
6952
6953 }
6954 }
6955 if (cur_end)
6956 *cur_end = term; /* restore the string terminator */
6957
6958 /* keep the link from this header to next one in case of later
6959 * removal of next header.
6960 */
6961 old_idx = cur_idx;
6962 }
6963 return 0;
6964}
6965
6966
6967/* Apply the filter to the status line in the response buffer <rtr>.
6968 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6969 * or -1 if a replacement resulted in an invalid status line.
6970 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6971int 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]6972{
6973 char term;
6974 char *cur_ptr, *cur_end;
6975 int done;
6976 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6977 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6978
6979
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6980 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6981 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6982 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6983 (exp->action == ACT_ALLOW ||
6984 exp->action == ACT_DENY))
6985 return 0;
6986 else if (exp->action == ACT_REMOVE)
6987 return 0;
6988
6989 done = 0;
6990
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6991 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6992 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6993
6994 /* Now we have the status line between cur_ptr and cur_end */
6995
6996 /* The annoying part is that pattern matching needs
6997 * that we modify the contents to null-terminate all
6998 * strings before testing them.
6999 */
7000
7001 term = *cur_end;
7002 *cur_end = '\0';
7003
7004 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7005 switch (exp->action) {
7006 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7007 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7008 done = 1;
7009 break;
7010
7011 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7012 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7013 done = 1;
7014 break;
7015
7016 case ACT_REPLACE:
7017 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7018 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7019 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7020 /* FIXME: if the user adds a newline in the replacement, the
7021 * index will not be recalculated for now, and the new line
7022 * will not be counted as a new header.
7023 */
7024
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7025 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7026 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7027 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7028 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7029 cur_ptr, cur_end + 1,
7030 NULL, NULL);
7031 if (unlikely(!cur_end))
7032 return -1;
7033
7034 /* we have a full respnse and we know that we have either a CR
7035 * or an LF at <ptr>.
7036 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7037 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]7038 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]7039 /* there is no point trying this regex on headers */
7040 return 1;
7041 }
7042 }
7043 *cur_end = term; /* restore the string terminator */
7044 return done;
7045}
7046
7047
7048
7049/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7050 * 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]7051 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7052 * unparsable response.
7053 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7054int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7055{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7056 struct http_txn *txn = &s->txn;
7057 struct hdr_exp *exp;
7058
7059 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7060 int ret;
7061
7062 /*
7063 * The interleaving of transformations and verdicts
7064 * makes it difficult to decide to continue or stop
7065 * the evaluation.
7066 */
7067
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7068 if (txn->flags & TX_SVDENY)
7069 break;
7070
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7071 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7072 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7073 exp->action == ACT_PASS)) {
7074 exp = exp->next;
7075 continue;
7076 }
7077
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7078 /* if this filter had a condition, evaluate it now and skip to
7079 * next filter if the condition does not match.
7080 */
7081 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7082 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]7083 ret = acl_pass(ret);
7084 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7085 ret = !ret;
7086 if (!ret)
7087 continue;
7088 }
7089
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7090 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7091 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7092 if (unlikely(ret < 0))
7093 return -1;
7094
7095 if (likely(ret == 0)) {
7096 /* The filter did not match the response, it can be
7097 * iterated through all headers.
7098 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7099 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7100 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7101 }
7102 return 0;
7103}
7104
7105
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7106/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7107 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7108 * desirable to call it only when needed. This function is also used when we
7109 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7110 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7111void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7112{
7113 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7114 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7115 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7116 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7117 char *hdr_beg, *hdr_end, *hdr_next;
7118 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7119
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7120 /* Iterate through the headers.
7121 * we start with the start line.
7122 */
7123 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7124 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7125
7126 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7127 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7128 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7129
7130 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7131 hdr_beg = hdr_next;
7132 hdr_end = hdr_beg + cur_hdr->len;
7133 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7134
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7135 /* We have one full header between hdr_beg and hdr_end, and the
7136 * next header starts at hdr_next. We're only interested in
7137 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7138 */
7139
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7140 is_cookie2 = 0;
7141 prev = hdr_beg + 10;
7142 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7143 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7144 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7145 if (!val) {
7146 old_idx = cur_idx;
7147 continue;
7148 }
7149 is_cookie2 = 1;
7150 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7151 }
7152
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7153 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7154 * <prev> points to the colon.
7155 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7156 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7157
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7158 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7159 * check-cache is enabled) and we are not interested in checking
7160 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7161 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7162 if (t->be->cookie_name == NULL &&
7163 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7164 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7165 return;
7166
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7167 /* OK so now we know we have to process this response cookie.
7168 * The format of the Set-Cookie header is slightly different
7169 * from the format of the Cookie header in that it does not
7170 * support the comma as a cookie delimiter (thus the header
7171 * cannot be folded) because the Expires attribute described in
7172 * the original Netscape's spec may contain an unquoted date
7173 * with a comma inside. We have to live with this because
7174 * many browsers don't support Max-Age and some browsers don't
7175 * support quoted strings. However the Set-Cookie2 header is
7176 * clean.
7177 *
7178 * We have to keep multiple pointers in order to support cookie
7179 * removal at the beginning, middle or end of header without
7180 * corrupting the header (in case of set-cookie2). A special
7181 * pointer, <scav> points to the beginning of the set-cookie-av
7182 * fields after the first semi-colon. The <next> pointer points
7183 * either to the end of line (set-cookie) or next unquoted comma
7184 * (set-cookie2). All of these headers are valid :
7185 *
7186 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7187 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7188 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7189 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7190 * | | | | | | | | | |
7191 * | | | | | | | | +-> next hdr_end <--+
7192 * | | | | | | | +------------> scav
7193 * | | | | | | +--------------> val_end
7194 * | | | | | +--------------------> val_beg
7195 * | | | | +----------------------> equal
7196 * | | | +------------------------> att_end
7197 * | | +----------------------------> att_beg
7198 * | +------------------------------> prev
7199 * +-----------------------------------------> hdr_beg
7200 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7201
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7202 for (; prev < hdr_end; prev = next) {
7203 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7204
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7205 /* find att_beg */
7206 att_beg = prev + 1;
7207 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7208 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7209
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7210 /* find att_end : this is the first character after the last non
7211 * space before the equal. It may be equal to hdr_end.
7212 */
7213 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7214
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7215 while (equal < hdr_end) {
7216 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7217 break;
7218 if (http_is_spht[(unsigned char)*equal++])
7219 continue;
7220 att_end = equal;
7221 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7222
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7223 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7224 * is between <att_beg> and <equal>, both may be identical.
7225 */
7226
7227 /* look for end of cookie if there is an equal sign */
7228 if (equal < hdr_end && *equal == '=') {
7229 /* look for the beginning of the value */
7230 val_beg = equal + 1;
7231 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7232 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7233
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7234 /* find the end of the value, respecting quotes */
7235 next = find_cookie_value_end(val_beg, hdr_end);
7236
7237 /* make val_end point to the first white space or delimitor after the value */
7238 val_end = next;
7239 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7240 val_end--;
7241 } else {
7242 /* <equal> points to next comma, semi-colon or EOL */
7243 val_beg = val_end = next = equal;
7244 }
7245
7246 if (next < hdr_end) {
7247 /* Set-Cookie2 supports multiple cookies, and <next> points to
7248 * a colon or semi-colon before the end. So skip all attr-value
7249 * pairs and look for the next comma. For Set-Cookie, since
7250 * commas are permitted in values, skip to the end.
7251 */
7252 if (is_cookie2)
7253 next = find_hdr_value_end(next, hdr_end);
7254 else
7255 next = hdr_end;
7256 }
7257
7258 /* Now everything is as on the diagram above */
7259
7260 /* Ignore cookies with no equal sign */
7261 if (equal == val_end)
7262 continue;
7263
7264 /* If there are spaces around the equal sign, we need to
7265 * strip them otherwise we'll get trouble for cookie captures,
7266 * or even for rewrites. Since this happens extremely rarely,
7267 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7268 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7269 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7270 int stripped_before = 0;
7271 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7272
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7273 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7274 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7275 equal += stripped_before;
7276 val_beg += stripped_before;
7277 }
7278
7279 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7280 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7281 val_beg += stripped_after;
7282 stripped_before += stripped_after;
7283 }
7284
7285 val_end += stripped_before;
7286 next += stripped_before;
7287 hdr_end += stripped_before;
7288 hdr_next += stripped_before;
7289 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7290 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7291 }
7292
7293 /* First, let's see if we want to capture this cookie. We check
7294 * that we don't already have a server side cookie, because we
7295 * can only capture one. Also as an optimisation, we ignore
7296 * cookies shorter than the declared name.
7297 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7298 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7299 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7300 (val_end - att_beg >= t->fe->capture_namelen) &&
7301 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7302 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7303 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7304 Alert("HTTP logging : out of memory.\n");
7305 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7306 else {
7307 if (log_len > t->fe->capture_len)
7308 log_len = t->fe->capture_len;
7309 memcpy(txn->srv_cookie, att_beg, log_len);
7310 txn->srv_cookie[log_len] = 0;
7311 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7312 }
7313
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7314 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7315 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7316 if (!(t->flags & SN_IGNORE_PRST) &&
7317 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7318 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7319 /* assume passive cookie by default */
7320 txn->flags &= ~TX_SCK_MASK;
7321 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7322
7323 /* If the cookie is in insert mode on a known server, we'll delete
7324 * this occurrence because we'll insert another one later.
7325 * 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]7326 * a direct access.
7327 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7328 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7329 /* The "preserve" flag was set, we don't want to touch the
7330 * server's cookie.
7331 */
7332 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7333 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7334 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7335 /* this cookie must be deleted */
7336 if (*prev == ':' && next == hdr_end) {
7337 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7338 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7339 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7340 txn->hdr_idx.used--;
7341 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7342 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7343 hdr_next += delta;
7344 http_msg_move_end(&txn->rsp, delta);
7345 /* note: while both invalid now, <next> and <hdr_end>
7346 * are still equal, so the for() will stop as expected.
7347 */
7348 } else {
7349 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7350 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7351 next = prev;
7352 hdr_end += delta;
7353 hdr_next += delta;
7354 cur_hdr->len += delta;
7355 http_msg_move_end(&txn->rsp, delta);
7356 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7357 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7358 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7359 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7360 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7361 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7362 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7363 * with this server since we know it.
7364 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7365 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7366 next += delta;
7367 hdr_end += delta;
7368 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7369 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7370 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7371
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7372 txn->flags &= ~TX_SCK_MASK;
7373 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7374 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7375 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7376 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7377 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7378 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7379 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7380 next += delta;
7381 hdr_end += delta;
7382 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7383 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7384 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7385
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7386 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7387 txn->flags &= ~TX_SCK_MASK;
7388 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7389 }
7390 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7391 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7392 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7393 int cmp_len, value_len;
7394 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7395
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7396 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7397 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7398 value_begin = att_beg + t->be->appsession_name_len;
7399 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]7400 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7401 cmp_len = att_end - att_beg;
7402 value_begin = val_beg;
7403 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7404 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7405
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7406 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7407 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7408 /* free a possibly previously allocated memory */
7409 pool_free2(apools.sessid, txn->sessid);
7410
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7411 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7412 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7413 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7414 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7415 return;
7416 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7417 memcpy(txn->sessid, value_begin, value_len);
7418 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7419 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7420 }
7421 /* that's done for this cookie, check the next one on the same
7422 * line when next != hdr_end (only if is_cookie2).
7423 */
7424 }
7425 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7426 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7427 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7428
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7429 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7430 appsess *asession = NULL;
7431 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7432 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7433 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7434 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7435 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7436 Alert("Not enough Memory process_srv():asession:calloc().\n");
7437 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7438 return;
7439 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7440 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7441
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7442 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7443 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7444 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]7445 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7446 return;
7447 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7448 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7449 asession->sessid[t->be->appsession_len] = 0;
7450
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7451 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7452 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7453 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7454 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]7455 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7456 return;
7457 }
7458 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7459 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7460
7461 asession->request_count = 0;
7462 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7463 }
7464
7465 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7466 asession->request_count++;
7467 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7468}
7469
7470
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7471/*
7472 * Check if response is cacheable or not. Updates t->flags.
7473 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7474void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7475{
7476 struct http_txn *txn = &t->txn;
7477 char *p1, *p2;
7478
7479 char *cur_ptr, *cur_end, *cur_next;
7480 int cur_idx;
7481
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7482 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7483 return;
7484
7485 /* Iterate through the headers.
7486 * we start with the start line.
7487 */
7488 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7489 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7490
7491 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7492 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7493 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7494
7495 cur_hdr = &txn->hdr_idx.v[cur_idx];
7496 cur_ptr = cur_next;
7497 cur_end = cur_ptr + cur_hdr->len;
7498 cur_next = cur_end + cur_hdr->cr + 1;
7499
7500 /* We have one full header between cur_ptr and cur_end, and the
7501 * next header starts at cur_next. We're only interested in
7502 * "Cookie:" headers.
7503 */
7504
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7505 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7506 if (val) {
7507 if ((cur_end - (cur_ptr + val) >= 8) &&
7508 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7509 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7510 return;
7511 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7512 }
7513
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7514 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7515 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7516 continue;
7517
7518 /* OK, right now we know we have a cache-control header at cur_ptr */
7519
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7520 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7521
7522 if (p1 >= cur_end) /* no more info */
7523 continue;
7524
7525 /* p1 is at the beginning of the value */
7526 p2 = p1;
7527
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7528 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7529 p2++;
7530
7531 /* we have a complete value between p1 and p2 */
7532 if (p2 < cur_end && *p2 == '=') {
7533 /* we have something of the form no-cache="set-cookie" */
7534 if ((cur_end - p1 >= 21) &&
7535 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7536 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7537 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7538 continue;
7539 }
7540
7541 /* OK, so we know that either p2 points to the end of string or to a comma */
7542 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7543 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7544 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7545 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7546 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7547 return;
7548 }
7549
7550 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7551 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7552 continue;
7553 }
7554 }
7555}
7556
7557
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7558/*
7559 * Try to retrieve a known appsession in the URI, then the associated server.
7560 * If the server is found, it's assigned to the session.
7561 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7562void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7563{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7564 char *end_params, *first_param, *cur_param, *next_param;
7565 char separator;
7566 int value_len;
7567
7568 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7569
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7570 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7571 (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]7572 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7573 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7574
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7575 first_param = NULL;
7576 switch (mode) {
7577 case PR_O2_AS_M_PP:
7578 first_param = memchr(begin, ';', len);
7579 break;
7580 case PR_O2_AS_M_QS:
7581 first_param = memchr(begin, '?', len);
7582 break;
7583 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7584
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7585 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7586 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7587 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7588
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7589 switch (mode) {
7590 case PR_O2_AS_M_PP:
7591 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7592 end_params = (char *) begin + len;
7593 }
7594 separator = ';';
7595 break;
7596 case PR_O2_AS_M_QS:
7597 end_params = (char *) begin + len;
7598 separator = '&';
7599 break;
7600 default:
7601 /* unknown mode, shouldn't happen */
7602 return;
7603 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7604
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7605 cur_param = next_param = end_params;
7606 while (cur_param > first_param) {
7607 cur_param--;
7608 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7609 /* let's see if this is the appsession parameter */
7610 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7611 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7612 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7613 /* Cool... it's the right one */
7614 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7615 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7616 if (value_len > 0) {
7617 manage_client_side_appsession(t, cur_param, value_len);
7618 }
7619 break;
7620 }
7621 next_param = cur_param;
7622 }
7623 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7624#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7625 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7626 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7627#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7628}
7629
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7630/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7631 * 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]7632 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7633 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7634 * 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]7635 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7636 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7637 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7638 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7639int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7640{
7641 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7642 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7643 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7644 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7645
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7646 if (!uri_auth)
7647 return 0;
7648
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7649 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]7650 return 0;
7651
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7652 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7653 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7654
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7655 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7656 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7657 return 0;
7658
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7659 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7660 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7661 return 0;
7662
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7663 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7664 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7665 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7666 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7667 break;
7668 }
7669 h++;
7670 }
7671
7672 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7673 h = uri + uri_auth->uri_len;
7674 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7675 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7676 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7677 break;
7678 }
7679 h++;
7680 }
7681 }
7682
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7683 h = uri + uri_auth->uri_len;
7684 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7685 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7686 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7687 break;
7688 }
7689 h++;
7690 }
7691
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7692 h = uri + uri_auth->uri_len;
7693 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7694 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7695 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7696 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7697 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7698 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7699 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7700 si->applet.ctx.stats.st_code = i;
7701 break;
7702 }
7703 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7704 break;
7705 }
7706 h++;
7707 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7708 return 1;
7709}
7710
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7711/*
7712 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7713 * By default it tries to report the error position as msg->err_pos. However if
7714 * this one is not set, it will then report msg->next, which is the last known
7715 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7716 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7717 */
7718void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7719 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7720 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7721{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7722 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7723 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7724
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7725 es->len = MIN(chn->buf->i, sizeof(es->buf));
7726 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7727 len1 = MIN(len1, es->len);
7728 len2 = es->len - len1; /* remaining data if buffer wraps */
7729
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7730 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7731 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7732 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7733
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7734 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7735 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7736 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7737 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7738
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7739 es->when = date; // user-visible date
7740 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7741 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7742 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7743 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7744 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7745 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7746 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7747 es->s_flags = s->flags;
7748 es->t_flags = s->txn.flags;
7749 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7750 es->b_out = chn->buf->o;
7751 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7752 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7753 es->m_clen = msg->chunk_len;
7754 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7755}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7756
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7757/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7758 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7759 * performed over the whole headers. Otherwise it must contain a valid header
7760 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7761 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7762 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7763 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7764 * -1.
7765 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7766 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7767unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7768 struct hdr_idx *idx, int occ,
7769 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7770{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7771 struct hdr_ctx local_ctx;
7772 char *ptr_hist[MAX_HDR_HISTORY];
7773 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7774 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7775 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7776
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7777 if (!ctx) {
7778 local_ctx.idx = 0;
7779 ctx = &local_ctx;
7780 }
7781
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7782 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7783 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7784 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7785 occ--;
7786 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7787 *vptr = ctx->line + ctx->val;
7788 *vlen = ctx->vlen;
7789 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7790 }
7791 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7792 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7793 }
7794
7795 /* negative occurrence, we scan all the list then walk back */
7796 if (-occ > MAX_HDR_HISTORY)
7797 return 0;
7798
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7799 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7800 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7801 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7802 len_hist[hist_ptr] = ctx->vlen;
7803 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7804 hist_ptr = 0;
7805 found++;
7806 }
7807 if (-occ > found)
7808 return 0;
7809 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7810 * find occurrence -occ, so we have to check [hist_ptr+occ].
7811 */
7812 hist_ptr += occ;
7813 if (hist_ptr >= MAX_HDR_HISTORY)
7814 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7815 *vptr = ptr_hist[hist_ptr];
7816 *vlen = len_hist[hist_ptr];
7817 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7818}
7819
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7820/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7821 * Print a debug line with a header. Always stop at the first CR or LF char,
7822 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7823 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7824 */
7825void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7826{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7827 int max;
7828 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7829 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7830 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7831
7832 for (max = 0; start + max < end; max++)
7833 if (start[max] == '\r' || start[max] == '\n')
7834 break;
7835
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7836 UBOUND(max, trash.size - trash.len - 3);
7837 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7838 trash.str[trash.len++] = '\n';
7839 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7840}
7841
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7842/*
7843 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7844 * the required fields are properly allocated and that we only need to (re)init
7845 * them. This should be used before processing any new request.
7846 */
7847void http_init_txn(struct session *s)
7848{
7849 struct http_txn *txn = &s->txn;
7850 struct proxy *fe = s->fe;
7851
7852 txn->flags = 0;
7853 txn->status = -1;
7854
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7855 global.req_count++;
7856
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7857 txn->cookie_first_date = 0;
7858 txn->cookie_last_date = 0;
7859
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7860 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7861 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7862 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7863 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7864 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7865 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7866 txn->req.chunk_len = 0LL;
7867 txn->req.body_len = 0LL;
7868 txn->rsp.chunk_len = 0LL;
7869 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7870 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7871 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7872 txn->req.chn = s->req;
7873 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7874
7875 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7876
7877 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7878 if (fe->options2 & PR_O2_REQBUG_OK)
7879 txn->req.err_pos = -1; /* let buggy requests pass */
7880
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7881 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7882 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7883
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7884 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7885 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7886
7887 if (txn->hdr_idx.v)
7888 hdr_idx_init(&txn->hdr_idx);
7889}
7890
7891/* to be used at the end of a transaction */
7892void http_end_txn(struct session *s)
7893{
7894 struct http_txn *txn = &s->txn;
7895
7896 /* these ones will have been dynamically allocated */
7897 pool_free2(pool2_requri, txn->uri);
7898 pool_free2(pool2_capture, txn->cli_cookie);
7899 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7900 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7901 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7902
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7903 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7904 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7905 txn->uri = NULL;
7906 txn->srv_cookie = NULL;
7907 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7908
7909 if (txn->req.cap) {
7910 struct cap_hdr *h;
7911 for (h = s->fe->req_cap; h; h = h->next)
7912 pool_free2(h->pool, txn->req.cap[h->index]);
7913 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7914 }
7915
7916 if (txn->rsp.cap) {
7917 struct cap_hdr *h;
7918 for (h = s->fe->rsp_cap; h; h = h->next)
7919 pool_free2(h->pool, txn->rsp.cap[h->index]);
7920 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7921 }
7922
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7923}
7924
7925/* to be used at the end of a transaction to prepare a new one */
7926void http_reset_txn(struct session *s)
7927{
7928 http_end_txn(s);
7929 http_init_txn(s);
7930
7931 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7932 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7933 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7934 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7935 /* re-init store persistence */
7936 s->store_count = 0;
7937
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7938 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7939
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7940 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7941
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7942 /* We must trim any excess data from the response buffer, because we
7943 * may have blocked an invalid response from a server that we don't
7944 * want to accidentely forward once we disable the analysers, nor do
7945 * we want those data to come along with next response. A typical
7946 * example of such data would be from a buggy server responding to
7947 * a HEAD with some data, or sending more than the advertised
7948 * content-length.
7949 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7950 if (unlikely(s->rep->buf->i))
7951 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7952
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7953 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7954 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7955
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7956 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7957 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7958
7959 s->req->rex = TICK_ETERNITY;
7960 s->req->wex = TICK_ETERNITY;
7961 s->req->analyse_exp = TICK_ETERNITY;
7962 s->rep->rex = TICK_ETERNITY;
7963 s->rep->wex = TICK_ETERNITY;
7964 s->rep->analyse_exp = TICK_ETERNITY;
7965}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7966
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7967void free_http_req_rules(struct list *r) {
7968 struct http_req_rule *tr, *pr;
7969
7970 list_for_each_entry_safe(pr, tr, r, list) {
7971 LIST_DEL(&pr->list);
7972 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7973 free(pr->http_auth.realm);
7974
7975 free(pr);
7976 }
7977}
7978
7979struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7980{
7981 struct http_req_rule *rule;
7982 int cur_arg;
7983
7984 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7985 if (!rule) {
7986 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7987 return NULL;
7988 }
7989
7990 if (!*args[0]) {
7991 goto req_error_parsing;
7992 } else if (!strcmp(args[0], "allow")) {
7993 rule->action = HTTP_REQ_ACT_ALLOW;
7994 cur_arg = 1;
7995 } else if (!strcmp(args[0], "deny")) {
7996 rule->action = HTTP_REQ_ACT_DENY;
7997 cur_arg = 1;
7998 } else if (!strcmp(args[0], "auth")) {
7999 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
8000 cur_arg = 1;
8001
8002 while(*args[cur_arg]) {
8003 if (!strcmp(args[cur_arg], "realm")) {
8004 rule->http_auth.realm = strdup(args[cur_arg + 1]);
8005 cur_arg+=2;
8006 continue;
8007 } else
8008 break;
8009 }
8010 } else {
8011req_error_parsing:
8012 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
8013 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
8014 return NULL;
8015 }
8016
8017 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8018 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8019 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8020
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8021 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8022 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8023 file, linenum, args[0], errmsg);
8024 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8025 return NULL;
8026 }
8027 rule->cond = cond;
8028 }
8029 else if (*args[cur_arg]) {
8030 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8031 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8032 file, linenum, args[0], args[cur_arg]);
8033 return NULL;
8034 }
8035
8036 return rule;
8037}
8038
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8039/************************************************************************/
8040/* The code below is dedicated to ACL parsing and matching */
8041/************************************************************************/
8042
8043
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8044/* This function ensures that the prerequisites for an L7 fetch are ready,
8045 * which means that a request or response is ready. If some data is missing,
8046 * 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]8047 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8048 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8049 *
8050 * The function returns :
8051 * 0 if some data is missing or if the requested data cannot be fetched
8052 * -1 if it is certain that we'll never have any HTTP message there
8053 * 1 if an HTTP message is ready
8054 */
8055static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8056acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8057 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8058{
8059 struct http_txn *txn = l7;
8060 struct http_msg *msg = &txn->req;
8061
8062 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8063 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8064 */
8065
8066 if (unlikely(!s || !txn))
8067 return 0;
8068
8069 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8070 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8071
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8072 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8073 if (unlikely(!s->req))
8074 return 0;
8075
8076 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8077 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8078 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8079 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8080 return -1;
8081 }
8082
8083 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8084 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8085 http_msg_analyzer(msg, &txn->hdr_idx);
8086
8087 /* Still no valid request ? */
8088 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8089 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8090 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8091 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8092 return -1;
8093 }
8094 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8095 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8096 return 0;
8097 }
8098
8099 /* OK we just got a valid HTTP request. We have some minor
8100 * preparation to perform so that further checks can rely
8101 * on HTTP tests.
8102 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8103 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8104 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8105 s->flags |= SN_REDIRECTABLE;
8106
8107 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8108 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8109 return -1;
8110 }
8111 }
8112
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8113 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8114 return 0; /* data might have moved and indexes changed */
8115
8116 /* otherwise everything's ready for the request */
8117 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8118 else {
8119 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8120 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8121 return 0;
8122 }
8123
8124 /* everything's OK */
8125 return 1;
8126}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8127
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8128#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8129 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]8130
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8131#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8132 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]8133
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8134
8135/* 1. Check on METHOD
8136 * We use the pre-parsed method if it is known, and store its number as an
8137 * integer. If it is unknown, we use the pointer and the length.
8138 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8139static 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]8140{
8141 int len, meth;
8142
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8143 len = strlen(*text);
8144 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8145
8146 pattern->val.i = meth;
8147 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8148 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8149 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8150 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8151 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8152 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8153 pattern->len = len;
8154 }
8155 return 1;
8156}
8157
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8158/* This function fetches the method of current HTTP request and stores
8159 * it in the global pattern struct as a chunk. There are two possibilities :
8160 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8161 * in <len> and <ptr> is NULL ;
8162 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8163 * <len> to its length.
8164 * This is intended to be used with acl_match_meth() only.
8165 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8166static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8167acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8168 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8169{
8170 int meth;
8171 struct http_txn *txn = l7;
8172
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8173 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8174
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8175 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8176 smp->type = SMP_T_UINT;
8177 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8178 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8179 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8180 /* ensure the indexes are not affected */
8181 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8182 smp->type = SMP_T_CSTR;
8183 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8184 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8185 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8186 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8187 return 1;
8188}
8189
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8190/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8191static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8192{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8193 int icase;
8194
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8195
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8196 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8197 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8198 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8199 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8200 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8201 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8202
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8203 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8204 if (pattern->val.i != HTTP_METH_OTHER)
8205 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8206
8207 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8208 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8209 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8210
8211 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8212 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8213 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8214 return ACL_PAT_FAIL;
8215 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8216}
8217
8218/* 2. Check on Request/Status Version
8219 * We simply compare strings here.
8220 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8221static 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]8222{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8223 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8224 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8225 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8226 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8227 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8228 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8229 return 1;
8230}
8231
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8232static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8233acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8234 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8235{
8236 struct http_txn *txn = l7;
8237 char *ptr;
8238 int len;
8239
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8240 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8241
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8242 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8243 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8244
8245 while ((len-- > 0) && (*ptr++ != '/'));
8246 if (len <= 0)
8247 return 0;
8248
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8249 smp->type = SMP_T_CSTR;
8250 smp->data.str.str = ptr;
8251 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8252
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8253 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8254 return 1;
8255}
8256
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8257static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8258acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8259 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8260{
8261 struct http_txn *txn = l7;
8262 char *ptr;
8263 int len;
8264
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8265 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8266
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8267 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8268 return 0;
8269
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8270 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8271 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8272
8273 while ((len-- > 0) && (*ptr++ != '/'));
8274 if (len <= 0)
8275 return 0;
8276
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8277 smp->type = SMP_T_CSTR;
8278 smp->data.str.str = ptr;
8279 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8280
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8281 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8282 return 1;
8283}
8284
8285/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8286static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8287acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8288 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8289{
8290 struct http_txn *txn = l7;
8291 char *ptr;
8292 int len;
8293
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8294 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8295
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8296 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8297 return 0;
8298
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8299 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8300 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8301
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8302 smp->type = SMP_T_UINT;
8303 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8304 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8305 return 1;
8306}
8307
8308/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8309static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8310smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8311 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8312{
8313 struct http_txn *txn = l7;
8314
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8315 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8316
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8317 smp->type = SMP_T_CSTR;
8318 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8319 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8320 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8321 return 1;
8322}
8323
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8324static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8325smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8326 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8327{
8328 struct http_txn *txn = l7;
8329
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8330 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8331
8332 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8333 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8334 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8335 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8336 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8337 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8338
8339 /*
8340 * If we are parsing url in frontend space, we prepare backend stage
8341 * to not parse again the same url ! optimization lazyness...
8342 */
8343 if (px->options & PR_O_HTTP_PROXY)
8344 l4->flags |= SN_ADDR_SET;
8345
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8346 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8347 return 1;
8348}
8349
8350static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8351smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8352 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8353{
8354 struct http_txn *txn = l7;
8355
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8356 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8357
8358 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8359 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]8360 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8361 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]8362
8363 if (px->options & PR_O_HTTP_PROXY)
8364 l4->flags |= SN_ADDR_SET;
8365
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8366 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8367 return 1;
8368}
8369
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8370/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8371 * Accepts an optional argument of type string containing the header field name,
8372 * and an optional argument of type signed or unsigned integer to request an
8373 * explicit occurrence of the header. Note that in the event of a missing name,
8374 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8375 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8376static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8377smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8378 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8379{
8380 struct http_txn *txn = l7;
8381 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8382 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8383 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]8384 int occ = 0;
8385 const char *name_str = NULL;
8386 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8387
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8388 if (args) {
8389 if (args[0].type != ARGT_STR)
8390 return 0;
8391 name_str = args[0].data.str.str;
8392 name_len = args[0].data.str.len;
8393
8394 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8395 occ = args[1].data.uint;
8396 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8397
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8398 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8399
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8400 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8401 /* search for header from the beginning */
8402 ctx->idx = 0;
8403
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8404 if (!occ && !(opt & SMP_OPT_ITERATE))
8405 /* no explicit occurrence and single fetch => last header by default */
8406 occ = -1;
8407
8408 if (!occ)
8409 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8410 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8411
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8412 smp->type = SMP_T_CSTR;
8413 smp->flags |= SMP_F_VOL_HDR;
8414 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]8415 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8416
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8417 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8418 return 0;
8419}
8420
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8421/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8422 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8423 */
8424static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8425smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8426 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8427{
8428 struct http_txn *txn = l7;
8429 struct hdr_idx *idx = &txn->hdr_idx;
8430 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8431 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]8432 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8433
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8434 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8435 return 0;
8436
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8437 CHECK_HTTP_MESSAGE_FIRST();
8438
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8439 ctx.idx = 0;
8440 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8441 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]8442 cnt++;
8443
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8444 smp->type = SMP_T_UINT;
8445 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8446 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8447 return 1;
8448}
8449
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8450/* Fetch an HTTP header's integer value. The integer value is returned. It
8451 * takes a mandatory argument of type string and an optional one of type int
8452 * to designate a specific occurrence. It returns an unsigned integer, which
8453 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8454 */
8455static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8456smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8457 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8458{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8459 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8460
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8461 if (ret > 0) {
8462 smp->type = SMP_T_UINT;
8463 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8464 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8465
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8466 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8467}
8468
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8469/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8470 * and an optional one of type int to designate a specific occurrence.
8471 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8472 */
8473static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8474smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8475 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8476{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8477 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8478
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8479 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8480 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8481 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8482 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8483 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8484 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8485 if (smp->data.str.len < temp->size - 1) {
8486 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8487 temp->str[smp->data.str.len] = '\0';
8488 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8489 smp->type = SMP_T_IPV6;
8490 break;
8491 }
8492 }
8493 }
8494
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8495 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8496 if (!(smp->flags & SMP_F_NOT_LAST))
8497 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8498 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8499 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8500}
8501
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8502/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8503 * the first '/' after the possible hostname, and ends before the possible '?'.
8504 */
8505static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8506smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8507 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8508{
8509 struct http_txn *txn = l7;
8510 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8511
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8512 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8513
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8514 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]8515 ptr = http_get_path(txn);
8516 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8517 return 0;
8518
8519 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8520 smp->type = SMP_T_CSTR;
8521 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8522
8523 while (ptr < end && *ptr != '?')
8524 ptr++;
8525
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8526 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8527 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8528 return 1;
8529}
8530
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8531/* This produces a concatenation of the first occurrence of the Host header
8532 * followed by the path component if it begins with a slash ('/'). This means
8533 * that '*' will not be added, resulting in exactly the first Host entry.
8534 * If no Host header is found, then the path is returned as-is. The returned
8535 * value is stored in the trash so it does not need to be marked constant.
8536 */
8537static int
8538smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8539 const struct arg *args, struct sample *smp)
8540{
8541 struct http_txn *txn = l7;
8542 char *ptr, *end, *beg;
8543 struct hdr_ctx ctx;
8544
8545 CHECK_HTTP_MESSAGE_FIRST();
8546
8547 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8548 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]8549 !ctx.vlen)
8550 return smp_fetch_path(px, l4, l7, opt, args, smp);
8551
8552 /* 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]8553 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8554 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8555 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8556 smp->data.str.len = ctx.vlen;
8557
8558 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8559 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]8560 beg = http_get_path(txn);
8561 if (!beg)
8562 beg = end;
8563
8564 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8565
8566 if (beg < ptr && *beg == '/') {
8567 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8568 smp->data.str.len += ptr - beg;
8569 }
8570
8571 smp->flags = SMP_F_VOL_1ST;
8572 return 1;
8573}
8574
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]8575/* This produces a 32-bit hash of the concatenation of the first occurrence of
8576 * the Host header followed by the path component if it begins with a slash ('/').
8577 * This means that '*' will not be added, resulting in exactly the first Host
8578 * entry. If no Host header is found, then the path is used. The resulting value
8579 * is hashed using the url hash followed by a full avalanche hash and provides a
8580 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
8581 * high-traffic sites without having to store whole paths.
8582 */
8583static int
8584smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8585 const struct arg *args, struct sample *smp)
8586{
8587 struct http_txn *txn = l7;
8588 struct hdr_ctx ctx;
8589 unsigned int hash = 0;
8590 char *ptr, *beg, *end;
8591 int len;
8592
8593 CHECK_HTTP_MESSAGE_FIRST();
8594
8595 ctx.idx = 0;
8596 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
8597 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8598 ptr = ctx.line + ctx.val;
8599 len = ctx.vlen;
8600 while (len--)
8601 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
8602 }
8603
8604 /* now retrieve the path */
8605 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
8606 beg = http_get_path(txn);
8607 if (!beg)
8608 beg = end;
8609
8610 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8611
8612 if (beg < ptr && *beg == '/') {
8613 while (beg < ptr)
8614 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
8615 }
8616 hash = full_hash(hash);
8617
8618 smp->type = SMP_T_UINT;
8619 smp->data.uint = hash;
8620 smp->flags = SMP_F_VOL_1ST;
8621 return 1;
8622}
8623
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8624/* This concatenates the source address with the 32-bit hash of the Host and
8625 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
8626 * per-url counters. The result is a binary block from 8 to 20 bytes depending
8627 * on the source address length. The URL hash is stored before the address so
8628 * that in environments where IPv6 is insignificant, truncating the output to
8629 * 8 bytes would still work.
8630 */
8631static int
8632smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8633 const struct arg *args, struct sample *smp)
8634{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8635 struct chunk *temp;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8636
8637 if (!smp_fetch_base32(px, l4, l7, opt, args, smp))
8638 return 0;
8639
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]8640 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8641 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
8642 temp->len += sizeof(smp->data.uint);
8643
8644 switch (l4->si[0].conn->addr.from.ss_family) {
8645 case AF_INET:
8646 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
8647 temp->len += 4;
8648 break;
8649 case AF_INET6:
8650 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
8651 temp->len += 16;
8652 break;
8653 default:
8654 return 0;
8655 }
8656
8657 smp->data.str = *temp;
8658 smp->type = SMP_T_BIN;
8659 return 1;
8660}
8661
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8662static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8663acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8664 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8665{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8666 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8667 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8668 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8669
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8670 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8671
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8672 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8673 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8674 return 1;
8675}
8676
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8677/* return a valid test if the current request is the first one on the connection */
8678static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8679acl_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]8680 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8681{
8682 if (!s)
8683 return 0;
8684
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8685 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8686 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8687 return 1;
8688}
8689
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8690/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8691static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8692acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8693 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8694{
8695
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8696 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8697 return 0;
8698
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8699 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8700
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8701 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8702 return 0;
8703
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8704 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8705 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]8706 return 1;
8707}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8708
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8709/* Accepts exactly 1 argument of type userlist */
8710static int
8711acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8712 const struct arg *args, struct sample *smp)
8713{
8714
8715 if (!args || args->type != ARGT_USR)
8716 return 0;
8717
8718 CHECK_HTTP_MESSAGE_FIRST();
8719
8720 if (!get_http_auth(l4))
8721 return 0;
8722
8723 /* acl_match_auth() will need several information at once */
8724 smp->ctx.a[0] = args->data.usr; /* user list */
8725 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8726 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8727
8728 /* if the user does not belong to the userlist or has a wrong password,
8729 * report that it unconditionally does not match. Otherwise we return
8730 * a non-zero integer which will be ignored anyway since all the params
8731 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8732 */
8733 smp->type = SMP_T_BOOL;
8734 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8735 if (smp->data.uint)
8736 smp->type = SMP_T_UINT;
8737
8738 return 1;
8739}
8740
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8741/* Try to find the next occurrence of a cookie name in a cookie header value.
8742 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8743 * the cookie value is returned into *value and *value_l, and the function
8744 * returns a pointer to the next pointer to search from if the value was found.
8745 * Otherwise if the cookie was not found, NULL is returned and neither value
8746 * nor value_l are touched. The input <hdr> string should first point to the
8747 * header's value, and the <hdr_end> pointer must point to the first character
8748 * not part of the value. <list> must be non-zero if value may represent a list
8749 * of values (cookie headers). This makes it faster to abort parsing when no
8750 * list is expected.
8751 */
8752static char *
8753extract_cookie_value(char *hdr, const char *hdr_end,
8754 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8755 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8756{
8757 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8758 char *next;
8759
8760 /* we search at least a cookie name followed by an equal, and more
8761 * generally something like this :
8762 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8763 */
8764 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8765 /* Iterate through all cookies on this line */
8766
8767 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8768 att_beg++;
8769
8770 /* find att_end : this is the first character after the last non
8771 * space before the equal. It may be equal to hdr_end.
8772 */
8773 equal = att_end = att_beg;
8774
8775 while (equal < hdr_end) {
8776 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8777 break;
8778 if (http_is_spht[(unsigned char)*equal++])
8779 continue;
8780 att_end = equal;
8781 }
8782
8783 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8784 * is between <att_beg> and <equal>, both may be identical.
8785 */
8786
8787 /* look for end of cookie if there is an equal sign */
8788 if (equal < hdr_end && *equal == '=') {
8789 /* look for the beginning of the value */
8790 val_beg = equal + 1;
8791 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8792 val_beg++;
8793
8794 /* find the end of the value, respecting quotes */
8795 next = find_cookie_value_end(val_beg, hdr_end);
8796
8797 /* make val_end point to the first white space or delimitor after the value */
8798 val_end = next;
8799 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8800 val_end--;
8801 } else {
8802 val_beg = val_end = next = equal;
8803 }
8804
8805 /* We have nothing to do with attributes beginning with '$'. However,
8806 * they will automatically be removed if a header before them is removed,
8807 * since they're supposed to be linked together.
8808 */
8809 if (*att_beg == '$')
8810 continue;
8811
8812 /* Ignore cookies with no equal sign */
8813 if (equal == next)
8814 continue;
8815
8816 /* Now we have the cookie name between att_beg and att_end, and
8817 * its value between val_beg and val_end.
8818 */
8819
8820 if (att_end - att_beg == cookie_name_l &&
8821 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8822 /* let's return this value and indicate where to go on from */
8823 *value = val_beg;
8824 *value_l = val_end - val_beg;
8825 return next + 1;
8826 }
8827
8828 /* Set-Cookie headers only have the name in the first attr=value part */
8829 if (!list)
8830 break;
8831 }
8832
8833 return NULL;
8834}
8835
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8836/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8837 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8838 * 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]8839 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8840 * 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]8841 * Accepts exactly 1 argument of type string. If the input options indicate
8842 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8843 */
8844static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8845smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8846 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8847{
8848 struct http_txn *txn = l7;
8849 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8850 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8851 const struct http_msg *msg;
8852 const char *hdr_name;
8853 int hdr_name_len;
8854 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8855 int occ = 0;
8856 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8857
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8858 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8859 return 0;
8860
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8861 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8862
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8863 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8864 msg = &txn->req;
8865 hdr_name = "Cookie";
8866 hdr_name_len = 6;
8867 } else {
8868 msg = &txn->rsp;
8869 hdr_name = "Set-Cookie";
8870 hdr_name_len = 10;
8871 }
8872
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8873 if (!occ && !(opt & SMP_OPT_ITERATE))
8874 /* no explicit occurrence and single fetch => last cookie by default */
8875 occ = -1;
8876
8877 /* OK so basically here, either we want only one value and it's the
8878 * last one, or we want to iterate over all of them and we fetch the
8879 * next one.
8880 */
8881
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8882 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8883 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8884 /* search for the header from the beginning, we must first initialize
8885 * the search parameters.
8886 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8887 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8888 ctx->idx = 0;
8889 }
8890
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8891 smp->flags |= SMP_F_VOL_HDR;
8892
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8893 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8894 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8895 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8896 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8897 goto out;
8898
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8899 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8900 continue;
8901
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8902 smp->ctx.a[0] = ctx->line + ctx->val;
8903 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8904 }
8905
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8906 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8907 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]8908 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8909 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8910 &smp->data.str.str,
8911 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8912 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8913 found = 1;
8914 if (occ >= 0) {
8915 /* one value was returned into smp->data.str.{str,len} */
8916 smp->flags |= SMP_F_NOT_LAST;
8917 return 1;
8918 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8919 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8920 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8921 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8922 /* all cookie headers and values were scanned. If we're looking for the
8923 * last occurrence, we may return it now.
8924 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8925 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8926 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8927 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8928}
8929
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8930/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8931 * 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]8932 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8933 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8934 */
8935static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8936acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8937 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8938{
8939 struct http_txn *txn = l7;
8940 struct hdr_idx *idx = &txn->hdr_idx;
8941 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8942 const struct http_msg *msg;
8943 const char *hdr_name;
8944 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8945 int cnt;
8946 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8947 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8948
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8949 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8950 return 0;
8951
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8952 CHECK_HTTP_MESSAGE_FIRST();
8953
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8954 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8955 msg = &txn->req;
8956 hdr_name = "Cookie";
8957 hdr_name_len = 6;
8958 } else {
8959 msg = &txn->rsp;
8960 hdr_name = "Set-Cookie";
8961 hdr_name_len = 10;
8962 }
8963
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8964 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8965 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8966 ctx.idx = 0;
8967 cnt = 0;
8968
8969 while (1) {
8970 /* Note: val_beg == NULL every time we need to fetch a new header */
8971 if (!val_beg) {
8972 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8973 break;
8974
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8975 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8976 continue;
8977
8978 val_beg = ctx.line + ctx.val;
8979 val_end = val_beg + ctx.vlen;
8980 }
8981
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8982 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8983 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8984 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8985 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8986 &smp->data.str.str,
8987 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8988 cnt++;
8989 }
8990 }
8991
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8992 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8993 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8994 return 1;
8995}
8996
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8997/* Fetch an cookie's integer value. The integer value is returned. It
8998 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8999 */
9000static int
9001smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9002 const struct arg *args, struct sample *smp)
9003{
9004 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
9005
9006 if (ret > 0) {
9007 smp->type = SMP_T_UINT;
9008 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9009 }
9010
9011 return ret;
9012}
9013
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9014/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9015/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9016/************************************************************************/
9017
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9018/*
9019 * Given a path string and its length, find the position of beginning of the
9020 * query string. Returns NULL if no query string is found in the path.
9021 *
9022 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9023 *
9024 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9025 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9026static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9027{
9028 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9029
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9030 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9031 return p ? p + 1 : NULL;
9032}
9033
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9034static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9035{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9036 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9037}
9038
9039/*
9040 * Given a url parameter, find the starting position of the first occurence,
9041 * or NULL if the parameter is not found.
9042 *
9043 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9044 * the function will return query_string+8.
9045 */
9046static char*
9047find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9048 char* url_param_name, size_t url_param_name_l,
9049 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9050{
9051 char *pos, *last;
9052
9053 pos = query_string;
9054 last = query_string + query_string_l - url_param_name_l - 1;
9055
9056 while (pos <= last) {
9057 if (pos[url_param_name_l] == '=') {
9058 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9059 return pos;
9060 pos += url_param_name_l + 1;
9061 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9062 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9063 pos++;
9064 pos++;
9065 }
9066 return NULL;
9067}
9068
9069/*
9070 * Given a url parameter name, returns its value and size into *value and
9071 * *value_l respectively, and returns non-zero. If the parameter is not found,
9072 * zero is returned and value/value_l are not touched.
9073 */
9074static int
9075find_url_param_value(char* path, size_t path_l,
9076 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9077 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9078{
9079 char *query_string, *qs_end;
9080 char *arg_start;
9081 char *value_start, *value_end;
9082
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9083 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9084 if (!query_string)
9085 return 0;
9086
9087 qs_end = path + path_l;
9088 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9089 url_param_name, url_param_name_l,
9090 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9091 if (!arg_start)
9092 return 0;
9093
9094 value_start = arg_start + url_param_name_l + 1;
9095 value_end = value_start;
9096
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9097 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9098 value_end++;
9099
9100 *value = value_start;
9101 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9102 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9103}
9104
9105static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9106smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9107 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9108{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9109 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9110 struct http_txn *txn = l7;
9111 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9112
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9113 if (!args || args[0].type != ARGT_STR ||
9114 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9115 return 0;
9116
9117 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9118
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9119 if (args[1].type)
9120 delim = *args[1].data.str.str;
9121
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9122 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]9123 args->data.str.str, args->data.str.len,
9124 &smp->data.str.str, &smp->data.str.len,
9125 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9126 return 0;
9127
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9128 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9129 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9130 return 1;
9131}
9132
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9133/* Return the signed integer value for the specified url parameter (see url_param
9134 * above).
9135 */
9136static int
9137smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9138 const struct arg *args, struct sample *smp)
9139{
9140 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
9141
9142 if (ret > 0) {
9143 smp->type = SMP_T_UINT;
9144 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9145 }
9146
9147 return ret;
9148}
9149
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9150/* This function is used to validate the arguments passed to any "hdr" fetch
9151 * keyword. These keywords support an optional positive or negative occurrence
9152 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9153 * is assumed that the types are already the correct ones. Returns 0 on error,
9154 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9155 * error message in case of error, that the caller is responsible for freeing.
9156 * The initial location must either be freeable or NULL.
9157 */
9158static int val_hdr(struct arg *arg, char **err_msg)
9159{
9160 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9161 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9162 return 0;
9163 }
9164 return 1;
9165}
9166
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9167/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9168/* All supported ACL keywords must be declared here. */
9169/************************************************************************/
9170
9171/* Note: must not be declared <const> as its list will be overwritten.
9172 * Please take care of keeping this list alphabetically sorted.
9173 */
9174static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9175 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9176 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9177 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9178 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9179 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9180 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9181 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9182 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
9183
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9184 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9185 { "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]9186 { "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]9187 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9188 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9189 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9190 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9191 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9192 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9193 { "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]9194
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9195 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9196 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9197 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9198 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9199 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9200 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9201 { "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 },
9202 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9203 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9204 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9205 { "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]9206
9207 { "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]9208 { "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]9209 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9210
9211 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
9212
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9213 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9214 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9215 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9216 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9217 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9218 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9219 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9220 { "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]9221
9222 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9223 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9224 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
9225
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9226 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9227 { "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]9228 { "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]9229 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9230 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9231 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9232 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9233 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9234 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9235 { "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]9236
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9237 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9238 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9239 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9240 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9241 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9242 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9243 { "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 },
9244 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9245 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9246 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9247 { "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]9248
9249 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9250
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9251 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9252 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9253 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9254 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9255 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9256 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9257 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9258 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9259 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9260 { "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]9261
9262 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9263 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9264 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9265 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9266 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9267 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9268 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9269 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9270 { "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]9271 { "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]9272
9273 { NULL, NULL, NULL, NULL },
9274}};
9275
9276/************************************************************************/
9277/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9278/************************************************************************/
9279/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9280static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9281 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9282 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9283 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9284 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9285 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9286 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9287 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9288 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9289 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9290 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9291 { "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]9292 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9293}};
9294
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9295
9296__attribute__((constructor))
9297static void __http_protocol_init(void)
9298{
9299 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9300 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9301}
9302
9303
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9304/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9305 * Local variables:
9306 * c-indent-level: 8
9307 * c-basic-offset: 8
9308 * End:
9309 */