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git01.mediatek.com / haproxy / 70d0ad560c026617d1f60d666f7264022e364cc0 / . / src / proto_http.c
blob: f86dcc35709c710d2ad8c657a924674aedae6c95 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]95/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
96const char *HTTP_401_fmt =
97 "HTTP/1.0 401 Unauthorized\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]100 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
102 "\r\n"
103 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
104
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]105const char *HTTP_407_fmt =
106 "HTTP/1.0 407 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
109 "Content-Type: text/html\r\n"
110 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]116 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117 [HTTP_ERR_400] = 400,
118 [HTTP_ERR_403] = 403,
119 [HTTP_ERR_408] = 408,
120 [HTTP_ERR_500] = 500,
121 [HTTP_ERR_502] = 502,
122 [HTTP_ERR_503] = 503,
123 [HTTP_ERR_504] = 504,
124};
125
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]126static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]127 [HTTP_ERR_200] =
128 "HTTP/1.0 200 OK\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "\r\n"
133 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]136 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 "Cache-Control: no-cache\r\n"
138 "Connection: close\r\n"
139 "Content-Type: text/html\r\n"
140 "\r\n"
141 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
142
143 [HTTP_ERR_403] =
144 "HTTP/1.0 403 Forbidden\r\n"
145 "Cache-Control: no-cache\r\n"
146 "Connection: close\r\n"
147 "Content-Type: text/html\r\n"
148 "\r\n"
149 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
150
151 [HTTP_ERR_408] =
152 "HTTP/1.0 408 Request Time-out\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
158
159 [HTTP_ERR_500] =
160 "HTTP/1.0 500 Server Error\r\n"
161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
166
167 [HTTP_ERR_502] =
168 "HTTP/1.0 502 Bad Gateway\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
174
175 [HTTP_ERR_503] =
176 "HTTP/1.0 503 Service Unavailable\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
182
183 [HTTP_ERR_504] =
184 "HTTP/1.0 504 Gateway Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
190
191};
192
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]193/* status codes available for the stats admin page (strictly 4 chars length) */
194const char *stat_status_codes[STAT_STATUS_SIZE] = {
195 [STAT_STATUS_DENY] = "DENY",
196 [STAT_STATUS_DONE] = "DONE",
197 [STAT_STATUS_ERRP] = "ERRP",
198 [STAT_STATUS_EXCD] = "EXCD",
199 [STAT_STATUS_NONE] = "NONE",
200 [STAT_STATUS_PART] = "PART",
201 [STAT_STATUS_UNKN] = "UNKN",
202};
203
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205/* We must put the messages here since GCC cannot initialize consts depending
206 * on strlen().
207 */
208struct chunk http_err_chunks[HTTP_ERR_SIZE];
209
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210#define FD_SETS_ARE_BITFIELDS
211#ifdef FD_SETS_ARE_BITFIELDS
212/*
213 * This map is used with all the FD_* macros to check whether a particular bit
214 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
215 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
216 * byte should be encoded. Be careful to always pass bytes from 0 to 255
217 * exclusively to the macros.
218 */
219fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
221
222#else
223#error "Check if your OS uses bitfields for fd_sets"
224#endif
225
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]226void init_proto_http()
227{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]228 int i;
229 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]231
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]232 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
233 if (!http_err_msgs[msg]) {
234 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
235 abort();
236 }
237
238 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
239 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
240 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]241
242 /* initialize the log header encoding map : '{|}"#' should be encoded with
243 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
244 * URL encoding only requires '"', '#' to be encoded as well as non-
245 * printable characters above.
246 */
247 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
248 memset(url_encode_map, 0, sizeof(url_encode_map));
249 for (i = 0; i < 32; i++) {
250 FD_SET(i, hdr_encode_map);
251 FD_SET(i, url_encode_map);
252 }
253 for (i = 127; i < 256; i++) {
254 FD_SET(i, hdr_encode_map);
255 FD_SET(i, url_encode_map);
256 }
257
258 tmp = "\"#{|}";
259 while (*tmp) {
260 FD_SET(*tmp, hdr_encode_map);
261 tmp++;
262 }
263
264 tmp = "\"#";
265 while (*tmp) {
266 FD_SET(*tmp, url_encode_map);
267 tmp++;
268 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]269
270 /* memory allocations */
271 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]272 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]273 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]274}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]275
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]276/*
277 * We have 26 list of methods (1 per first letter), each of which can have
278 * up to 3 entries (2 valid, 1 null).
279 */
280struct http_method_desc {
281 http_meth_t meth;
282 int len;
283 const char text[8];
284};
285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]286const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]287 ['C' - 'A'] = {
288 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
289 },
290 ['D' - 'A'] = {
291 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
292 },
293 ['G' - 'A'] = {
294 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
295 },
296 ['H' - 'A'] = {
297 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
298 },
299 ['P' - 'A'] = {
300 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
301 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
302 },
303 ['T' - 'A'] = {
304 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
305 },
306 /* rest is empty like this :
307 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
308 */
309};
310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]311/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]312 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]313 * RFC2616 for those chars.
314 */
315
316const char http_is_spht[256] = {
317 [' '] = 1, ['\t'] = 1,
318};
319
320const char http_is_crlf[256] = {
321 ['\r'] = 1, ['\n'] = 1,
322};
323
324const char http_is_lws[256] = {
325 [' '] = 1, ['\t'] = 1,
326 ['\r'] = 1, ['\n'] = 1,
327};
328
329const char http_is_sep[256] = {
330 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
331 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
332 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
333 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
334 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
335};
336
337const char http_is_ctl[256] = {
338 [0 ... 31] = 1,
339 [127] = 1,
340};
341
342/*
343 * A token is any ASCII char that is neither a separator nor a CTL char.
344 * Do not overwrite values in assignment since gcc-2.95 will not handle
345 * them correctly. Instead, define every non-CTL char's status.
346 */
347const char http_is_token[256] = {
348 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
349 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
350 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
351 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
352 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
353 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
354 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
355 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
356 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
357 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
358 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
359 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
360 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
361 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
362 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
363 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
364 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
365 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
366 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
367 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
368 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
369 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
370 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
371 ['|'] = 1, ['}'] = 0, ['~'] = 1,
372};
373
374
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]375/*
376 * An http ver_token is any ASCII which can be found in an HTTP version,
377 * which includes 'H', 'T', 'P', '/', '.' and any digit.
378 */
379const char http_is_ver_token[256] = {
380 ['.'] = 1, ['/'] = 1,
381 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
382 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
383 ['H'] = 1, ['P'] = 1, ['T'] = 1,
384};
385
386
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]387/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]388 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
389 */
390#if defined(DEBUG_FSM)
391static void http_silent_debug(int line, struct session *s)
392{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]393 chunk_printf(&trash,
394 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
395 line,
396 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
397 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
398 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]399
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]400 chunk_printf(&trash,
401 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
402 line,
403 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
404 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
405 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]406}
407#else
408#define http_silent_debug(l,s) do { } while (0)
409#endif
410
411/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]412 * Adds a header and its CRLF at the tail of the message's buffer, just before
413 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]414 * The header is also automatically added to the index <hdr_idx>, and the end
415 * of headers is automatically adjusted. The number of bytes added is returned
416 * on success, otherwise <0 is returned indicating an error.
417 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]418int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]419{
420 int bytes, len;
421
422 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]423 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]424 if (!bytes)
425 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]426 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]427 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
428}
429
430/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]431 * Adds a header and its CRLF at the tail of the message's buffer, just before
432 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]433 * the buffer is only opened and the space reserved, but nothing is copied.
434 * The header is also automatically added to the index <hdr_idx>, and the end
435 * of headers is automatically adjusted. The number of bytes added is returned
436 * on success, otherwise <0 is returned indicating an error.
437 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]438int http_header_add_tail2(struct http_msg *msg,
439 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]440{
441 int bytes;
442
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]443 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]444 if (!bytes)
445 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]446 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]447 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
448}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]449
450/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]451 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
452 * If so, returns the position of the first non-space character relative to
453 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
454 * to return a pointer to the place after the first space. Returns 0 if the
455 * header name does not match. Checks are case-insensitive.
456 */
457int http_header_match2(const char *hdr, const char *end,
458 const char *name, int len)
459{
460 const char *val;
461
462 if (hdr + len >= end)
463 return 0;
464 if (hdr[len] != ':')
465 return 0;
466 if (strncasecmp(hdr, name, len) != 0)
467 return 0;
468 val = hdr + len + 1;
469 while (val < end && HTTP_IS_SPHT(*val))
470 val++;
471 if ((val >= end) && (len + 2 <= end - hdr))
472 return len + 2; /* we may replace starting from second space */
473 return val - hdr;
474}
475
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]476/* Find the end of the header value contained between <s> and <e>. See RFC2616,
477 * par 2.2 for more information. Note that it requires a valid header to return
478 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]479 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]480char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]481{
482 int quoted, qdpair;
483
484 quoted = qdpair = 0;
485 for (; s < e; s++) {
486 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]487 else if (quoted) {
488 if (*s == '\\') qdpair = 1;
489 else if (*s == '"') quoted = 0;
490 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]491 else if (*s == '"') quoted = 1;
492 else if (*s == ',') return s;
493 }
494 return s;
495}
496
497/* Find the first or next occurrence of header <name> in message buffer <sol>
498 * using headers index <idx>, and return it in the <ctx> structure. This
499 * structure holds everything necessary to use the header and find next
500 * occurrence. If its <idx> member is 0, the header is searched from the
501 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]502 * 1 when it finds a value, and 0 when there is no more. It is designed to work
503 * with headers defined as comma-separated lists. As a special case, if ctx->val
504 * is NULL when searching for a new values of a header, the current header is
505 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]506 */
507int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]508 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]509 struct hdr_ctx *ctx)
510{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]511 char *eol, *sov;
512 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]513
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]514 cur_idx = ctx->idx;
515 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]516 /* We have previously returned a value, let's search
517 * another one on the same line.
518 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]519 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]520 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]521 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]522 eol = sol + idx->v[cur_idx].len;
523
524 if (sov >= eol)
525 /* no more values in this header */
526 goto next_hdr;
527
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]528 /* values remaining for this header, skip the comma but save it
529 * for later use (eg: for header deletion).
530 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]531 sov++;
532 while (sov < eol && http_is_lws[(unsigned char)*sov])
533 sov++;
534
535 goto return_hdr;
536 }
537
538 /* first request for this header */
539 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]540 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]541 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]542 while (cur_idx) {
543 eol = sol + idx->v[cur_idx].len;
544
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]545 if (len == 0) {
546 /* No argument was passed, we want any header.
547 * To achieve this, we simply build a fake request. */
548 while (sol + len < eol && sol[len] != ':')
549 len++;
550 name = sol;
551 }
552
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]553 if ((len < eol - sol) &&
554 (sol[len] == ':') &&
555 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]556 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]557 sov = sol + len + 1;
558 while (sov < eol && http_is_lws[(unsigned char)*sov])
559 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]560
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]561 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]562 ctx->prev = old_idx;
563 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]564 ctx->idx = cur_idx;
565 ctx->val = sov - sol;
566
567 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]568 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]569 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]570 eol--;
571 ctx->tws++;
572 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]573 ctx->vlen = eol - sov;
574 return 1;
575 }
576 next_hdr:
577 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]578 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]579 cur_idx = idx->v[cur_idx].next;
580 }
581 return 0;
582}
583
584int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]585 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]586 struct hdr_ctx *ctx)
587{
588 return http_find_header2(name, strlen(name), sol, idx, ctx);
589}
590
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]591/* Remove one value of a header. This only works on a <ctx> returned by one of
592 * the http_find_header functions. The value is removed, as well as surrounding
593 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]594 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]595 * message <msg>. The new index is returned. If it is zero, it means there is
596 * no more header, so any processing may stop. The ctx is always left in a form
597 * that can be handled by http_find_header2() to find next occurrence.
598 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]599int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]600{
601 int cur_idx = ctx->idx;
602 char *sol = ctx->line;
603 struct hdr_idx_elem *hdr;
604 int delta, skip_comma;
605
606 if (!cur_idx)
607 return 0;
608
609 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]610 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]611 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]612 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]613 http_msg_move_end(msg, delta);
614 idx->used--;
615 hdr->len = 0; /* unused entry */
616 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]617 if (idx->tail == ctx->idx)
618 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]619 ctx->idx = ctx->prev; /* walk back to the end of previous header */
620 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
621 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]622 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]623 return ctx->idx;
624 }
625
626 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]627 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
628 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]629 */
630
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]631 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]632 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]633 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]634 NULL, 0);
635 hdr->len += delta;
636 http_msg_move_end(msg, delta);
637 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]638 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]639 return ctx->idx;
640}
641
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]642/* This function handles a server error at the stream interface level. The
643 * stream interface is assumed to be already in a closed state. An optional
644 * message is copied into the input buffer, and an HTTP status code stored.
645 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]646 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]647 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]648static void http_server_error(struct session *t, struct stream_interface *si,
649 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]650{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]651 channel_auto_read(si->ob);
652 channel_abort(si->ob);
653 channel_auto_close(si->ob);
654 channel_erase(si->ob);
655 channel_auto_close(si->ib);
656 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]657 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]658 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]659 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]660 }
661 if (!(t->flags & SN_ERR_MASK))
662 t->flags |= err;
663 if (!(t->flags & SN_FINST_MASK))
664 t->flags |= finst;
665}
666
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]667/* This function returns the appropriate error location for the given session
668 * and message.
669 */
670
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]671struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]672{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]673 if (s->be->errmsg[msgnum].str)
674 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]675 else if (s->fe->errmsg[msgnum].str)
676 return &s->fe->errmsg[msgnum];
677 else
678 return &http_err_chunks[msgnum];
679}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]680
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]681/*
682 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
683 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
684 */
685static http_meth_t find_http_meth(const char *str, const int len)
686{
687 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]688 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]689
690 m = ((unsigned)*str - 'A');
691
692 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]693 for (h = http_methods[m]; h->len > 0; h++) {
694 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]695 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]696 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]698 };
699 return HTTP_METH_OTHER;
700 }
701 return HTTP_METH_NONE;
702
703}
704
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]705/* Parse the URI from the given transaction (which is assumed to be in request
706 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
707 * It is returned otherwise.
708 */
709static char *
710http_get_path(struct http_txn *txn)
711{
712 char *ptr, *end;
713
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]714 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]715 end = ptr + txn->req.sl.rq.u_l;
716
717 if (ptr >= end)
718 return NULL;
719
720 /* RFC2616, par. 5.1.2 :
721 * Request-URI = "*" | absuri | abspath | authority
722 */
723
724 if (*ptr == '*')
725 return NULL;
726
727 if (isalpha((unsigned char)*ptr)) {
728 /* this is a scheme as described by RFC3986, par. 3.1 */
729 ptr++;
730 while (ptr < end &&
731 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
732 ptr++;
733 /* skip '://' */
734 if (ptr == end || *ptr++ != ':')
735 return NULL;
736 if (ptr == end || *ptr++ != '/')
737 return NULL;
738 if (ptr == end || *ptr++ != '/')
739 return NULL;
740 }
741 /* skip [user[:passwd]@]host[:[port]] */
742
743 while (ptr < end && *ptr != '/')
744 ptr++;
745
746 if (ptr == end)
747 return NULL;
748
749 /* OK, we got the '/' ! */
750 return ptr;
751}
752
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]753/* Returns a 302 for a redirectable request. This may only be called just after
754 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
755 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]756 * NOTE: this function is designed to support being called once data are scheduled
757 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]758 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]759void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]760{
761 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]762 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]763 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]764 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]765
766 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]767 trash.len = strlen(HTTP_302);
768 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]769
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]770 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]771
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]772 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]773 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]774 return;
775
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]776 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]777 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]778 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
779 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]780 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]781
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]782 /* 3: add the request URI. Since it was already forwarded, we need
783 * to temporarily rewind the buffer.
784 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]785 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]786 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]787
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]788 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]789 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]790
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]791 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]792
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]793 if (!path)
794 return;
795
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]796 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]797 return;
798
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]799 memcpy(trash.str + trash.len, path, len);
800 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]801
802 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]803 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
804 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]805 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]806 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
807 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]808 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]809
810 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]811 si_shutr(si);
812 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]813 si->err_type = SI_ET_NONE;
814 si->err_loc = NULL;
815 si->state = SI_ST_CLO;
816
817 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]818 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]819
820 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]821 if (srv)
822 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]823}
824
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]825/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]826 * that the server side is closed. Note that err_type is actually a
827 * bitmask, where almost only aborts may be cumulated with other
828 * values. We consider that aborted operations are more important
829 * than timeouts or errors due to the fact that nobody else in the
830 * logs might explain incomplete retries. All others should avoid
831 * being cumulated. It should normally not be possible to have multiple
832 * aborts at once, but just in case, the first one in sequence is reported.
833 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]834void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]835{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]836 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]837
838 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]839 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]840 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]841 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]842 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]843 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]844 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]845 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]846 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]847 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]848 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]849 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]850 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]851 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]852 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]853 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]854 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]855 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]856 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]857 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]858 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]859}
860
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]861extern const char sess_term_cond[8];
862extern const char sess_fin_state[8];
863extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]864struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]865struct pool_head *pool2_capture;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]866struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]867
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]868/*
869 * Capture headers from message starting at <som> according to header list
870 * <cap_hdr>, and fill the <idx> structure appropriately.
871 */
872void capture_headers(char *som, struct hdr_idx *idx,
873 char **cap, struct cap_hdr *cap_hdr)
874{
875 char *eol, *sol, *col, *sov;
876 int cur_idx;
877 struct cap_hdr *h;
878 int len;
879
880 sol = som + hdr_idx_first_pos(idx);
881 cur_idx = hdr_idx_first_idx(idx);
882
883 while (cur_idx) {
884 eol = sol + idx->v[cur_idx].len;
885
886 col = sol;
887 while (col < eol && *col != ':')
888 col++;
889
890 sov = col + 1;
891 while (sov < eol && http_is_lws[(unsigned char)*sov])
892 sov++;
893
894 for (h = cap_hdr; h; h = h->next) {
895 if ((h->namelen == col - sol) &&
896 (strncasecmp(sol, h->name, h->namelen) == 0)) {
897 if (cap[h->index] == NULL)
898 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]899 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]900
901 if (cap[h->index] == NULL) {
902 Alert("HTTP capture : out of memory.\n");
903 continue;
904 }
905
906 len = eol - sov;
907 if (len > h->len)
908 len = h->len;
909
910 memcpy(cap[h->index], sov, len);
911 cap[h->index][len]=0;
912 }
913 }
914 sol = eol + idx->v[cur_idx].cr + 1;
915 cur_idx = idx->v[cur_idx].next;
916 }
917}
918
919
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]920/* either we find an LF at <ptr> or we jump to <bad>.
921 */
922#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
923
924/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
925 * otherwise to <http_msg_ood> with <state> set to <st>.
926 */
927#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
928 ptr++; \
929 if (likely(ptr < end)) \
930 goto good; \
931 else { \
932 state = (st); \
933 goto http_msg_ood; \
934 } \
935 } while (0)
936
937
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]938/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]939 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]940 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
941 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
942 * will give undefined results.
943 * Note that it is upon the caller's responsibility to ensure that ptr < end,
944 * and that msg->sol points to the beginning of the response.
945 * If a complete line is found (which implies that at least one CR or LF is
946 * found before <end>, the updated <ptr> is returned, otherwise NULL is
947 * returned indicating an incomplete line (which does not mean that parts have
948 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
949 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
950 * upon next call.
951 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]952 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]953 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
954 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]955 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]956 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]957const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]958 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]959 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]960{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]961 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]962
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]963 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]964 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]965 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]966 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]967 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
968
969 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]970 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
972 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]973 state = HTTP_MSG_ERROR;
974 break;
975
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]976 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]977 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]978 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]979 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]980 goto http_msg_rpcode;
981 }
982 if (likely(HTTP_IS_SPHT(*ptr)))
983 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
984 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]985 state = HTTP_MSG_ERROR;
986 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]987
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]988 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]989 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]990 if (likely(!HTTP_IS_LWS(*ptr)))
991 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
992
993 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]994 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]995 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
996 }
997
998 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]999 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1000 http_msg_rsp_reason:
1001 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1002 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1003 msg->sl.st.r_l = 0;
1004 goto http_msg_rpline_eol;
1005
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1006 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1007 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1008 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1009 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1010 goto http_msg_rpreason;
1011 }
1012 if (likely(HTTP_IS_SPHT(*ptr)))
1013 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1014 /* so it's a CR/LF, so there is no reason phrase */
1015 goto http_msg_rsp_reason;
1016
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1017 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1018 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1019 if (likely(!HTTP_IS_CRLF(*ptr)))
1020 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1021 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1022 http_msg_rpline_eol:
1023 /* We have seen the end of line. Note that we do not
1024 * necessarily have the \n yet, but at least we know that we
1025 * have EITHER \r OR \n, otherwise the response would not be
1026 * complete. We can then record the response length and return
1027 * to the caller which will be able to register it.
1028 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1029 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1030 return ptr;
1031
1032#ifdef DEBUG_FULL
1033 default:
1034 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1035 exit(1);
1036#endif
1037 }
1038
1039 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1040 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1041 if (ret_state)
1042 *ret_state = state;
1043 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1044 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1046}
1047
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1048/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1049 * This function parses a request line between <ptr> and <end>, starting with
1050 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1051 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1052 * will give undefined results.
1053 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1054 * and that msg->sol points to the beginning of the request.
1055 * If a complete line is found (which implies that at least one CR or LF is
1056 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1057 * returned indicating an incomplete line (which does not mean that parts have
1058 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1059 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1060 * upon next call.
1061 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1062 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1063 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1064 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1065 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1066 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1067const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1068 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1069 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1070{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1071 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1072
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1074 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1075 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1076 if (likely(HTTP_IS_TOKEN(*ptr)))
1077 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1078
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1079 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1080 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1081 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1082 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1083
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1084 if (likely(HTTP_IS_CRLF(*ptr))) {
1085 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1086 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1087 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1088 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1089 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1090 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1091 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 msg->sl.rq.v_l = 0;
1094 goto http_msg_rqline_eol;
1095 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1096 state = HTTP_MSG_ERROR;
1097 break;
1098
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1099 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1100 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1102 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1103 goto http_msg_rquri;
1104 }
1105 if (likely(HTTP_IS_SPHT(*ptr)))
1106 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1107 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1108 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1109
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1110 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1111 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1112 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1113 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1114
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1115 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1116 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1118 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1119
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1120 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1121 /* non-ASCII chars are forbidden unless option
1122 * accept-invalid-http-request is enabled in the frontend.
1123 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1124 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1125 if (msg->err_pos < -1)
1126 goto invalid_char;
1127 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1128 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1129 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1130 }
1131
1132 if (likely(HTTP_IS_CRLF(*ptr))) {
1133 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1134 goto http_msg_req09_uri_e;
1135 }
1136
1137 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1138 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1139 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1140 state = HTTP_MSG_ERROR;
1141 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1142
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1143 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1144 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1145 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1146 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1147 goto http_msg_rqver;
1148 }
1149 if (likely(HTTP_IS_SPHT(*ptr)))
1150 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1151 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1152 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1153
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1154 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1155 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1156 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1157 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1158
1159 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1160 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1161 http_msg_rqline_eol:
1162 /* We have seen the end of line. Note that we do not
1163 * necessarily have the \n yet, but at least we know that we
1164 * have EITHER \r OR \n, otherwise the request would not be
1165 * complete. We can then record the request length and return
1166 * to the caller which will be able to register it.
1167 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1168 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1169 return ptr;
1170 }
1171
1172 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1173 state = HTTP_MSG_ERROR;
1174 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1175
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1176#ifdef DEBUG_FULL
1177 default:
1178 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1179 exit(1);
1180#endif
1181 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1182
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1183 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1184 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1185 if (ret_state)
1186 *ret_state = state;
1187 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1188 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1190}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1191
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1192/*
1193 * Returns the data from Authorization header. Function may be called more
1194 * than once so data is stored in txn->auth_data. When no header is found
1195 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1196 * searching again for something we are unable to find anyway.
1197 */
1198
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1199char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1200
1201int
1202get_http_auth(struct session *s)
1203{
1204
1205 struct http_txn *txn = &s->txn;
1206 struct chunk auth_method;
1207 struct hdr_ctx ctx;
1208 char *h, *p;
1209 int len;
1210
1211#ifdef DEBUG_AUTH
1212 printf("Auth for session %p: %d\n", s, txn->auth.method);
1213#endif
1214
1215 if (txn->auth.method == HTTP_AUTH_WRONG)
1216 return 0;
1217
1218 if (txn->auth.method)
1219 return 1;
1220
1221 txn->auth.method = HTTP_AUTH_WRONG;
1222
1223 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1224
1225 if (txn->flags & TX_USE_PX_CONN) {
1226 h = "Proxy-Authorization";
1227 len = strlen(h);
1228 } else {
1229 h = "Authorization";
1230 len = strlen(h);
1231 }
1232
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1233 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1234 return 0;
1235
1236 h = ctx.line + ctx.val;
1237
1238 p = memchr(h, ' ', ctx.vlen);
1239 if (!p || p == h)
1240 return 0;
1241
1242 chunk_initlen(&auth_method, h, 0, p-h);
1243 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1244
1245 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1246
1247 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1248 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1249
1250 if (len < 0)
1251 return 0;
1252
1253
1254 get_http_auth_buff[len] = '\0';
1255
1256 p = strchr(get_http_auth_buff, ':');
1257
1258 if (!p)
1259 return 0;
1260
1261 txn->auth.user = get_http_auth_buff;
1262 *p = '\0';
1263 txn->auth.pass = p+1;
1264
1265 txn->auth.method = HTTP_AUTH_BASIC;
1266 return 1;
1267 }
1268
1269 return 0;
1270}
1271
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1272
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1273/*
1274 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1275 * depending on the initial msg->msg_state. The caller is responsible for
1276 * ensuring that the message does not wrap. The function can be preempted
1277 * everywhere when data are missing and recalled at the exact same location
1278 * with no information loss. The message may even be realigned between two
1279 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1280 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1281 * fields. Note that msg->sol will be initialized after completing the first
1282 * state, so that none of the msg pointers has to be initialized prior to the
1283 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1284 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1285void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1286{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1287 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1288 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1289 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1290
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1291 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1292 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1293 ptr = buf->p + msg->next;
1294 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1295
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1296 if (unlikely(ptr >= end))
1297 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1298
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1299 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1300 /*
1301 * First, states that are specific to the response only.
1302 * We check them first so that request and headers are
1303 * closer to each other (accessed more often).
1304 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1306 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1307 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1308 /* we have a start of message, but we have to check
1309 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1310 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1311 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1312 if (unlikely(ptr != buf->p)) {
1313 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1314 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1315 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1316 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1317 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1318 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1319 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1320 hdr_idx_init(idx);
1321 state = HTTP_MSG_RPVER;
1322 goto http_msg_rpver;
1323 }
1324
1325 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1326 goto http_msg_invalid;
1327
1328 if (unlikely(*ptr == '\n'))
1329 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1330 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1331 /* stop here */
1332
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1333 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1334 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 EXPECT_LF_HERE(ptr, http_msg_invalid);
1336 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1337 /* stop here */
1338
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1339 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1340 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1341 case HTTP_MSG_RPVER_SP:
1342 case HTTP_MSG_RPCODE:
1343 case HTTP_MSG_RPCODE_SP:
1344 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1345 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1346 state, ptr, end,
1347 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1348 if (unlikely(!ptr))
1349 return;
1350
1351 /* we have a full response and we know that we have either a CR
1352 * or an LF at <ptr>.
1353 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1354 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1355
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1356 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1357 if (likely(*ptr == '\r'))
1358 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1359 goto http_msg_rpline_end;
1360
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1361 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1362 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1363 /* msg->sol must point to the first of CR or LF. */
1364 EXPECT_LF_HERE(ptr, http_msg_invalid);
1365 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1366 /* stop here */
1367
1368 /*
1369 * Second, states that are specific to the request only
1370 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1371 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1372 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1373 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1374 /* we have a start of message, but we have to check
1375 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1376 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1377 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1378 if (likely(ptr != buf->p)) {
1379 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1380 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1381 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1382 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1383 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1384 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1385 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1386 state = HTTP_MSG_RQMETH;
1387 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1388 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1389
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1390 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1391 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1392
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 if (unlikely(*ptr == '\n'))
1394 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1395 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1396 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1397
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1398 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1399 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1400 EXPECT_LF_HERE(ptr, http_msg_invalid);
1401 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1402 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1403
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1405 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1406 case HTTP_MSG_RQMETH_SP:
1407 case HTTP_MSG_RQURI:
1408 case HTTP_MSG_RQURI_SP:
1409 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1410 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1411 state, ptr, end,
1412 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1413 if (unlikely(!ptr))
1414 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1416 /* we have a full request and we know that we have either a CR
1417 * or an LF at <ptr>.
1418 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1420
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1421 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 if (likely(*ptr == '\r'))
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1424 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1425
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1426 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1427 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1428 /* check for HTTP/0.9 request : no version information available.
1429 * msg->sol must point to the first of CR or LF.
1430 */
1431 if (unlikely(msg->sl.rq.v_l == 0))
1432 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1433
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 EXPECT_LF_HERE(ptr, http_msg_invalid);
1435 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1437
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1438 /*
1439 * Common states below
1440 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1441 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1442 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1443 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1444 if (likely(!HTTP_IS_CRLF(*ptr))) {
1445 goto http_msg_hdr_name;
1446 }
1447
1448 if (likely(*ptr == '\r'))
1449 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1450 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1451
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1452 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1453 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 /* assumes msg->sol points to the first char */
1455 if (likely(HTTP_IS_TOKEN(*ptr)))
1456 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1457
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1458 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1459 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1460
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1461 if (likely(msg->err_pos < -1) || *ptr == '\n')
1462 goto http_msg_invalid;
1463
1464 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1465 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1466
1467 /* and we still accept this non-token character */
1468 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1469
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1470 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1471 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1472 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 if (likely(HTTP_IS_SPHT(*ptr)))
1474 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1477 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1478
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1479 if (likely(!HTTP_IS_CRLF(*ptr))) {
1480 goto http_msg_hdr_val;
1481 }
1482
1483 if (likely(*ptr == '\r'))
1484 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1485 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1488 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 EXPECT_LF_HERE(ptr, http_msg_invalid);
1490 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1493 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1494 if (likely(HTTP_IS_SPHT(*ptr))) {
1495 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1496 for (; buf->p + msg->sov < ptr; msg->sov++)
1497 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 goto http_msg_hdr_l1_sp;
1499 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1500 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1501 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 goto http_msg_complete_header;
1503
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1504 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1505 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1506 /* assumes msg->sol points to the first char, and msg->sov
1507 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 */
1509 if (likely(!HTTP_IS_CRLF(*ptr)))
1510 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1511
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1512 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 /* Note: we could also copy eol into ->eoh so that we have the
1514 * real header end in case it ends with lots of LWS, but is this
1515 * really needed ?
1516 */
1517 if (likely(*ptr == '\r'))
1518 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1519 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1520
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1522 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 EXPECT_LF_HERE(ptr, http_msg_invalid);
1524 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1525
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1526 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1527 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1529 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1530 for (; buf->p + msg->eol < ptr; msg->eol++)
1531 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 goto http_msg_hdr_val;
1533 }
1534 http_msg_complete_header:
1535 /*
1536 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1537 * Assumes msg->sol points to the first char, msg->sov points
1538 * to the first character of the value and msg->eol to the
1539 * first CR or LF so we know how the line ends. We insert last
1540 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1542 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1543 idx, idx->tail) < 0))
1544 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1545
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1546 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 if (likely(!HTTP_IS_CRLF(*ptr))) {
1548 goto http_msg_hdr_name;
1549 }
1550
1551 if (likely(*ptr == '\r'))
1552 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1553 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1554
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1555 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1556 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1557 /* Assumes msg->sol points to the first of either CR or LF */
1558 EXPECT_LF_HERE(ptr, http_msg_invalid);
1559 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1560 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1561 msg->eoh = msg->sol;
1562 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1563 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1565
1566 case HTTP_MSG_ERROR:
1567 /* this may only happen if we call http_msg_analyser() twice with an error */
1568 break;
1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570#ifdef DEBUG_FULL
1571 default:
1572 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1573 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1574#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575 }
1576 http_msg_ood:
1577 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1578 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1579 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1580 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1581
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1582 http_msg_invalid:
1583 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1584 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1585 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 return;
1587}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1588
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1589/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1590 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1591 * nothing is done and 1 is returned.
1592 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1593static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1594{
1595 int delta;
1596 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1597 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1598
1599 if (msg->sl.rq.v_l != 0)
1600 return 1;
1601
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1602 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1603 delta = 0;
1604
1605 if (msg->sl.rq.u_l == 0) {
1606 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1607 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1608 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1609 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1610 }
1611 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1612 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1613 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1614 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1615 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1616 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1617 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1618 NULL, NULL);
1619 if (unlikely(!cur_end))
1620 return 0;
1621
1622 /* we have a full HTTP/1.0 request now and we know that
1623 * we have either a CR or an LF at <ptr>.
1624 */
1625 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1626 return 1;
1627}
1628
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1629/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1630 * and "keep-alive" values. If we already know that some headers may safely
1631 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1632 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1633 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1634 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1635 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1636 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1637 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1638 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1639 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1640void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1641{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1642 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1643 const char *hdr_val = "Connection";
1644 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1645
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1646 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1647 return;
1648
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1649 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1650 hdr_val = "Proxy-Connection";
1651 hdr_len = 16;
1652 }
1653
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1654 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1655 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1656 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1657 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1658 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1659 if (to_del & 2)
1660 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1661 else
1662 txn->flags |= TX_CON_KAL_SET;
1663 }
1664 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1665 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1666 if (to_del & 1)
1667 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1668 else
1669 txn->flags |= TX_CON_CLO_SET;
1670 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1671 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1672 txn->flags |= TX_HDR_CONN_UPG;
1673 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1674 }
1675
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1676 txn->flags |= TX_HDR_CONN_PRS;
1677 return;
1678}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1679
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1680/* Apply desired changes on the Connection: header. Values may be removed and/or
1681 * added depending on the <wanted> flags, which are exclusively composed of
1682 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1683 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1684 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1685void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1686{
1687 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1688 const char *hdr_val = "Connection";
1689 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1690
1691 ctx.idx = 0;
1692
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1693
1694 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1695 hdr_val = "Proxy-Connection";
1696 hdr_len = 16;
1697 }
1698
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1699 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1700 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1701 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1702 if (wanted & TX_CON_KAL_SET)
1703 txn->flags |= TX_CON_KAL_SET;
1704 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1705 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1706 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1707 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1708 if (wanted & TX_CON_CLO_SET)
1709 txn->flags |= TX_CON_CLO_SET;
1710 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1711 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1712 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1713 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1714
1715 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1716 return;
1717
1718 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1719 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1720 hdr_val = "Connection: close";
1721 hdr_len = 17;
1722 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1723 hdr_val = "Proxy-Connection: close";
1724 hdr_len = 23;
1725 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1726 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1727 }
1728
1729 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1730 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1731 hdr_val = "Connection: keep-alive";
1732 hdr_len = 22;
1733 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1734 hdr_val = "Proxy-Connection: keep-alive";
1735 hdr_len = 28;
1736 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1737 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 }
1739 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1740}
1741
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1742/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1743 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1744 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1745 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1746 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1747 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1748static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1749{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1750 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1751 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1752 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1753 const char *end = buf->data + buf->size;
1754 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1755 unsigned int chunk = 0;
1756
1757 /* The chunk size is in the following form, though we are only
1758 * interested in the size and CRLF :
1759 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1760 */
1761 while (1) {
1762 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1763 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1764 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1765 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1766 if (c < 0) /* not a hex digit anymore */
1767 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1768 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1769 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1770 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1771 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1772 chunk = (chunk << 4) + c;
1773 }
1774
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1775 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1776 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1777 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1778
1779 while (http_is_spht[(unsigned char)*ptr]) {
1780 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1781 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1782 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1784 }
1785
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1786 /* Up to there, we know that at least one byte is present at *ptr. Check
1787 * for the end of chunk size.
1788 */
1789 while (1) {
1790 if (likely(HTTP_IS_CRLF(*ptr))) {
1791 /* we now have a CR or an LF at ptr */
1792 if (likely(*ptr == '\r')) {
1793 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1794 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1795 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1796 return 0;
1797 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1798
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1799 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1800 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1801 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1802 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1803 /* done */
1804 break;
1805 }
1806 else if (*ptr == ';') {
1807 /* chunk extension, ends at next CRLF */
1808 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1809 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1810 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1811 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1812
1813 while (!HTTP_IS_CRLF(*ptr)) {
1814 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1815 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1816 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1817 return 0;
1818 }
1819 /* we have a CRLF now, loop above */
1820 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1821 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1822 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1823 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1824 }
1825
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1827 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1828 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1829 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1830 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1831 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1832 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1833 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1834 msg->chunk_len = chunk;
1835 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1836 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1837 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1838 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1839 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1840 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1841}
1842
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1843/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1844 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1845 * the trailers is found, it is automatically scheduled to be forwarded,
1846 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1847 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1848 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1849 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1850 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1851 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1852 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1853 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1854 * matches the length of trailers already parsed and not forwarded. It is also
1855 * important to note that this function is designed to be able to parse wrapped
1856 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1857 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1858static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1859{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1860 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1861
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1862 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1863 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1864 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1865 const char *ptr = b_ptr(buf, msg->next);
1866 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1867 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1868
1869 /* scan current line and stop at LF or CRLF */
1870 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1871 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1872 return 0;
1873
1874 if (*ptr == '\n') {
1875 if (!p1)
1876 p1 = ptr;
1877 p2 = ptr;
1878 break;
1879 }
1880
1881 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1882 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1883 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1885 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1886 p1 = ptr;
1887 }
1888
1889 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1890 if (ptr >= buf->data + buf->size)
1891 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1892 }
1893
1894 /* after LF; point to beginning of next line */
1895 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1896 if (p2 >= buf->data + buf->size)
1897 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1898
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1899 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1900 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1901 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1902
1903 /* schedule this line for forwarding */
1904 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1905 if (msg->sov >= buf->size)
1906 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1907
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1908 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1909 /* LF/CRLF at beginning of line => end of trailers at p2.
1910 * Everything was scheduled for forwarding, there's nothing
1911 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1912 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1913 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1914 msg->msg_state = HTTP_MSG_DONE;
1915 return 1;
1916 }
1917 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1918 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1919 }
1920}
1921
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1922/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1923 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1924 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1925 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1926 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1927 * not enough data are available, the function does not change anything and
1928 * returns zero. If a parse error is encountered, the function returns < 0 and
1929 * does not change anything. Note: this function is designed to parse wrapped
1930 * CRLF at the end of the buffer.
1931 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1932static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1933{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1934 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1935 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1936 int bytes;
1937
1938 /* NB: we'll check data availabilty at the end. It's not a
1939 * problem because whatever we match first will be checked
1940 * against the correct length.
1941 */
1942 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1943 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1944 if (*ptr == '\r') {
1945 bytes++;
1946 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1947 if (ptr >= buf->data + buf->size)
1948 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1949 }
1950
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1951 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1952 return 0;
1953
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1954 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1955 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1956 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1957 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1958
1959 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1960 if (ptr >= buf->data + buf->size)
1961 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1962 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1963 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1964 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1965 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1966 return 1;
1967}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1968
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1969
1970/*
1971 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1972 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1973int select_compression_request_header(struct session *s, struct buffer *req)
1974{
1975 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1976 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1977 struct hdr_ctx ctx;
1978 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1979 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1980
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1981 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1982 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1983 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1984 */
1985 ctx.idx = 0;
1986 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1987 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1988 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
1989 (ctx.vlen < 31 ||
1990 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
1991 ctx.line[ctx.val + 30] < '6' ||
1992 (ctx.line[ctx.val + 30] == '6' &&
1993 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
1994 s->comp_algo = NULL;
1995 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1996 }
1997
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1998 ctx.idx = 0;
1999 /* no compression when Cache-Control: no-transform found */
2000 while (http_find_header2("Cache-Control", 13, req->p, &txn->hdr_idx, &ctx)) {
2001 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12)) {
2002 s->comp_algo = NULL;
2003 return 0;
2004 }
2005 }
2006
2007 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2008 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2009 ctx.idx = 0;
2010 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2011 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2012 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2013 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2014
2015 /* remove all occurrences of the header when "compression offload" is set */
2016
2017 if ((s->be->comp && s->be->comp->offload) ||
2018 (s->fe->comp && s->fe->comp->offload)) {
2019 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2020 ctx.idx = 0;
2021 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2022 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2023 }
2024 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2025 return 1;
2026 }
2027 }
2028 }
2029 }
2030
2031 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2032 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2033 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2034 if (comp_algo->add_data == identity_add_data) {
2035 s->comp_algo = comp_algo;
2036 return 1;
2037 }
2038 }
2039 }
2040
2041 s->comp_algo = NULL;
2042
2043 return 0;
2044}
2045
2046/*
2047 * Selects a comression algorithm depending of the server response.
2048 */
2049int select_compression_response_header(struct session *s, struct buffer *res)
2050{
2051 struct http_txn *txn = &s->txn;
2052 struct http_msg *msg = &txn->rsp;
2053 struct hdr_ctx ctx;
2054 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2055
2056 /* no common compression algorithm was found in request header */
2057 if (s->comp_algo == NULL)
2058 goto fail;
2059
2060 /* HTTP < 1.1 should not be compressed */
2061 if (!(msg->flags & HTTP_MSGF_VER_11))
2062 goto fail;
2063
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2064 ctx.idx = 0;
2065
2066 /* Content-Length is null */
2067 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2068 goto fail;
2069
2070 /* content is already compressed */
2071 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2072 goto fail;
2073
2074 comp_type = NULL;
2075
2076 /* if there was a compression content-type option in the backend or the frontend
2077 * The backend have priority.
2078 */
2079 if ((s->be->comp && (comp_type = s->be->comp->types)) || (s->fe->comp && (comp_type = s->fe->comp->types))) {
2080 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2081 for (; comp_type; comp_type = comp_type->next) {
2082 if (strncmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
2083 /* this Content-Type should be compressed */
2084 break;
2085 }
2086 }
2087 /* this Content-Type should not be compressed */
2088 if (comp_type == NULL)
2089 goto fail;
2090 }
2091
2092 ctx.idx = 0;
2093
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2094 /* limit compression rate */
2095 if (global.comp_rate_lim > 0)
2096 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2097 goto fail;
2098
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2099 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2100 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2101 goto fail;
2102
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2103 s->comp_ctx.cur_lvl = global.tune.comp_maxlevel;
2104
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2105 /* remove Content-Length header */
2106 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2107 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2108
2109 /* add Transfer-Encoding header */
2110 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2111 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2112
2113 /*
2114 * Add Content-Encoding header when it's not identity encoding.
2115 * RFC 2616 : Identity encoding: This content-coding is used only in the
2116 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2117 * header.
2118 */
2119 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2120 trash.len = 18;
2121 memcpy(trash.str, "Content-Encoding: ", trash.len);
2122 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2123 trash.len += s->comp_algo->name_len;
2124 trash.str[trash.len] = '\0';
2125 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2126 }
2127
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2128 return 1;
2129
2130fail:
2131 if (s->comp_algo) {
William Lallemand1c2d6222012-10-30 15:52:53 +0100[diff] [blame]2132 s->comp_algo->end(&s->comp_ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2133 s->comp_algo = NULL;
2134 }
2135 return 0;
2136}
2137
2138
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2139/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2140 * processing can continue on next analysers, or zero if it either needs more
2141 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2142 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2143 * when it has nothing left to do, and may remove any analyser when it wants to
2144 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2145 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2146int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2147{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2148 /*
2149 * We will parse the partial (or complete) lines.
2150 * We will check the request syntax, and also join multi-line
2151 * headers. An index of all the lines will be elaborated while
2152 * parsing.
2153 *
2154 * For the parsing, we use a 28 states FSM.
2155 *
2156 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2157 * req->buf->p = beginning of request
2158 * req->buf->p + msg->eoh = end of processed headers / start of current one
2159 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2160 * msg->eol = end of current header or line (LF or CRLF)
2161 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2162 *
2163 * At end of parsing, we may perform a capture of the error (if any), and
2164 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2165 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2166 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2167 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2168
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2169 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2170 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2171 struct http_txn *txn = &s->txn;
2172 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2173 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2174
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2175 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]2176 now_ms, __FUNCTION__,
2177 s,
2178 req,
2179 req->rex, req->wex,
2180 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2181 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2182 req->analysers);
2183
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2184 /* we're speaking HTTP here, so let's speak HTTP to the client */
2185 s->srv_error = http_return_srv_error;
2186
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2187 /* There's a protected area at the end of the buffer for rewriting
2188 * purposes. We don't want to start to parse the request if the
2189 * protected area is affected, because we may have to move processed
2190 * data later, which is much more complicated.
2191 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2192 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2193 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2194 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2195 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2196 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2197 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2198 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2199 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2200 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2201 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2202 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2203 return 0;
2204 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2205 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2206 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2207 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2208 }
2209
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2210 /* Note that we have the same problem with the response ; we
2211 * may want to send a redirect, error or anything which requires
2212 * some spare space. So we'll ensure that we have at least
2213 * maxrewrite bytes available in the response buffer before
2214 * processing that one. This will only affect pipelined
2215 * keep-alive requests.
2216 */
2217 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2218 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2219 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2220 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2221 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2222 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]2223 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2224 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2225 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2226 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2227 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2228 return 0;
2229 }
2230 }
2231
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2232 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2233 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2234 }
2235
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2236 /* 1: we might have to print this header in debug mode */
2237 if (unlikely((global.mode & MODE_DEBUG) &&
2238 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2239 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2240 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2241
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2242 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2243 /* this is a bit complex : in case of error on the request line,
2244 * we know that rq.l is still zero, so we display only the part
2245 * up to the end of the line (truncated by debug_hdr).
2246 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2247 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2248 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2249
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2250 sol += hdr_idx_first_pos(&txn->hdr_idx);
2251 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2252
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2253 while (cur_idx) {
2254 eol = sol + txn->hdr_idx.v[cur_idx].len;
2255 debug_hdr("clihdr", s, sol, eol);
2256 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2257 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2258 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2259 }
2260
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2261
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2262 /*
2263 * Now we quickly check if we have found a full valid request.
2264 * If not so, we check the FD and buffer states before leaving.
2265 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2266 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2267 * requests are checked first. When waiting for a second request
2268 * on a keep-alive session, if we encounter and error, close, t/o,
2269 * we note the error in the session flags but don't set any state.
2270 * Since the error will be noted there, it will not be counted by
2271 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2272 * Last, we may increase some tracked counters' http request errors on
2273 * the cases that are deliberately the client's fault. For instance,
2274 * a timeout or connection reset is not counted as an error. However
2275 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2276 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2277
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2278 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2279 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2280 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2281 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2282 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2283 session_inc_http_req_ctr(s);
2284 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2285 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2286 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2287 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2288
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2289 /* 1: Since we are in header mode, if there's no space
2290 * left for headers, we won't be able to free more
2291 * later, so the session will never terminate. We
2292 * must terminate it now.
2293 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2294 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2295 /* FIXME: check if URI is set and return Status
2296 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2297 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2298 session_inc_http_req_ctr(s);
2299 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2300 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2301 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2302 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2303 goto return_bad_req;
2304 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2305
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2306 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2307 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2308 if (!(s->flags & SN_ERR_MASK))
2309 s->flags |= SN_ERR_CLICL;
2310
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2311 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2312 goto failed_keep_alive;
2313
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2314 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2315 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2316 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]2317 session_inc_http_err_ctr(s);
2318 }
2319
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 msg->msg_state = HTTP_MSG_ERROR;
2321 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2322
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2323 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2324 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2325 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2326 if (s->listener->counters)
2327 s->listener->counters->failed_req++;
2328
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2329 if (!(s->flags & SN_FINST_MASK))
2330 s->flags |= SN_FINST_R;
2331 return 0;
2332 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2333
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2334 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2335 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]2336 if (!(s->flags & SN_ERR_MASK))
2337 s->flags |= SN_ERR_CLITO;
2338
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2339 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2340 goto failed_keep_alive;
2341
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2342 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2343 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2344 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]2345 session_inc_http_err_ctr(s);
2346 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2347 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2348 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2349 msg->msg_state = HTTP_MSG_ERROR;
2350 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2351
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2352 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2353 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2354 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2355 if (s->listener->counters)
2356 s->listener->counters->failed_req++;
2357
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2358 if (!(s->flags & SN_FINST_MASK))
2359 s->flags |= SN_FINST_R;
2360 return 0;
2361 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2362
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2363 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2364 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2365 if (!(s->flags & SN_ERR_MASK))
2366 s->flags |= SN_ERR_CLICL;
2367
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2368 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2369 goto failed_keep_alive;
2370
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2371 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2372 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]2373 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2374 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2375 msg->msg_state = HTTP_MSG_ERROR;
2376 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2377
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2378 session_inc_http_err_ctr(s);
2379 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2380 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2381 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2382 if (s->listener->counters)
2383 s->listener->counters->failed_req++;
2384
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2385 if (!(s->flags & SN_FINST_MASK))
2386 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2387 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2388 }
2389
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2390 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2391 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2392 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2393#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2394 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2395 /* We need more data, we have to re-enable quick-ack in case we
2396 * previously disabled it, otherwise we might cause the client
2397 * to delay next data.
2398 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2399 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]2400 }
2401#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2402
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2403 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2404 /* If the client starts to talk, let's fall back to
2405 * request timeout processing.
2406 */
2407 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2408 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2409 }
2410
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2411 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2412 if (!tick_isset(req->analyse_exp)) {
2413 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2414 (txn->flags & TX_WAIT_NEXT_RQ) &&
2415 tick_isset(s->be->timeout.httpka))
2416 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2417 else
2418 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2419 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2420
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2421 /* we're not ready yet */
2422 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2423
2424 failed_keep_alive:
2425 /* Here we process low-level errors for keep-alive requests. In
2426 * short, if the request is not the first one and it experiences
2427 * a timeout, read error or shutdown, we just silently close so
2428 * that the client can try again.
2429 */
2430 txn->status = 0;
2431 msg->msg_state = HTTP_MSG_RQBEFORE;
2432 req->analysers = 0;
2433 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2434 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2435 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2436 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2437 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2438
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2439 /* OK now we have a complete HTTP request with indexed headers. Let's
2440 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2441 * 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]2442 * 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]2443 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2444 * byte after the last LF. msg->sov points to the first byte of data.
2445 * msg->eol cannot be trusted because it may have been left uninitialized
2446 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2447 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2448
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2449 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2450 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2451
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2452 if (txn->flags & TX_WAIT_NEXT_RQ) {
2453 /* kill the pending keep-alive timeout */
2454 txn->flags &= ~TX_WAIT_NEXT_RQ;
2455 req->analyse_exp = TICK_ETERNITY;
2456 }
2457
2458
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2459 /* Maybe we found in invalid header name while we were configured not
2460 * to block on that, so we have to capture it now.
2461 */
2462 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2463 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]2464
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2465 /*
2466 * 1: identify the method
2467 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2468 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2469
2470 /* we can make use of server redirect on GET and HEAD */
2471 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2472 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2473
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2474 /*
2475 * 2: check if the URI matches the monitor_uri.
2476 * We have to do this for every request which gets in, because
2477 * the monitor-uri is defined by the frontend.
2478 */
2479 if (unlikely((s->fe->monitor_uri_len != 0) &&
2480 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2481 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2482 s->fe->monitor_uri,
2483 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2484 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2485 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2486 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2487 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2488
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2489 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2490 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2491
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2492 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2493 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2494 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]2495
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2496 ret = acl_pass(ret);
2497 if (cond->pol == ACL_COND_UNLESS)
2498 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2499
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2500 if (ret) {
2501 /* we fail this request, let's return 503 service unavail */
2502 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2503 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2504 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2505 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2506 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2508 /* nothing to fail, let's reply normaly */
2509 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2510 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2511 goto return_prx_cond;
2512 }
2513
2514 /*
2515 * 3: Maybe we have to copy the original REQURI for the logs ?
2516 * Note: we cannot log anymore if the request has been
2517 * classified as invalid.
2518 */
2519 if (unlikely(s->logs.logwait & LW_REQ)) {
2520 /* we have a complete HTTP request that we must log */
2521 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2522 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2523
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2524 if (urilen >= REQURI_LEN)
2525 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2526 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2527 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2528
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2529 if (!(s->logs.logwait &= ~LW_REQ))
2530 s->do_log(s);
2531 } else {
2532 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2533 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2534 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2535
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2536 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2537 s->unique_id = pool_alloc2(pool2_uniqueid);
2538 }
2539
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2540 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2541 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2542 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2543
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2544 /* ... and check if the request is HTTP/1.1 or above */
2545 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2546 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2547 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2548 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2549 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2550
2551 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2552 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]2553
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2554 /* if the frontend has "option http-use-proxy-header", we'll check if
2555 * we have what looks like a proxied connection instead of a connection,
2556 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2557 * Note that this is *not* RFC-compliant, however browsers and proxies
2558 * happen to do that despite being non-standard :-(
2559 * We consider that a request not beginning with either '/' or '*' is
2560 * a proxied connection, which covers both "scheme://location" and
2561 * CONNECT ip:port.
2562 */
2563 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2564 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2565 txn->flags |= TX_USE_PX_CONN;
2566
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2567 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2568 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2569
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2570 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2571 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2572 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2573 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2574
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2575 /* 6: determine the transfer-length.
2576 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2577 * the presence of a message-body in a REQUEST and its transfer length
2578 * must be determined that way (in order of precedence) :
2579 * 1. The presence of a message-body in a request is signaled by the
2580 * inclusion of a Content-Length or Transfer-Encoding header field
2581 * in the request's header fields. When a request message contains
2582 * both a message-body of non-zero length and a method that does
2583 * not define any semantics for that request message-body, then an
2584 * origin server SHOULD either ignore the message-body or respond
2585 * with an appropriate error message (e.g., 413). A proxy or
2586 * gateway, when presented the same request, SHOULD either forward
2587 * the request inbound with the message- body or ignore the
2588 * message-body when determining a response.
2589 *
2590 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2591 * and the "chunked" transfer-coding (Section 6.2) is used, the
2592 * transfer-length is defined by the use of this transfer-coding.
2593 * If a Transfer-Encoding header field is present and the "chunked"
2594 * transfer-coding is not present, the transfer-length is defined
2595 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2596 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2597 * 3. If a Content-Length header field is present, its decimal value in
2598 * OCTETs represents both the entity-length and the transfer-length.
2599 * If a message is received with both a Transfer-Encoding header
2600 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2601 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2602 * 4. By the server closing the connection. (Closing the connection
2603 * cannot be used to indicate the end of a request body, since that
2604 * would leave no possibility for the server to send back a response.)
2605 *
2606 * Whenever a transfer-coding is applied to a message-body, the set of
2607 * transfer-codings MUST include "chunked", unless the message indicates
2608 * it is terminated by closing the connection. When the "chunked"
2609 * transfer-coding is used, it MUST be the last transfer-coding applied
2610 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2611 */
2612
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2613 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2614 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2615 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2616 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2617 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2618 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2619 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2620 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2621 /* bad transfer-encoding (chunked followed by something else) */
2622 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2623 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2624 break;
2625 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2626 }
2627
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2628 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2629 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2630 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2631 signed long long cl;
2632
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2633 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2634 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2635 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2636 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2637
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2638 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2639 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2640 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2641 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2642
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2643 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2644 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2645 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2646 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2647
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2648 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2649 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2650 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2651 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2652
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2653 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2654 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2655 }
2656
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2657 /* bodyless requests have a known length */
2658 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2659 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2660
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2661 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2662 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2663 req->analyse_exp = TICK_ETERNITY;
2664 return 1;
2665
2666 return_bad_req:
2667 /* We centralize bad requests processing here */
2668 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2669 /* we detected a parsing error. We want to archive this request
2670 * in the dedicated proxy area for later troubleshooting.
2671 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2672 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]2673 }
2674
2675 txn->req.msg_state = HTTP_MSG_ERROR;
2676 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2677 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2678
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2679 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2680 if (s->listener->counters)
2681 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2682
2683 return_prx_cond:
2684 if (!(s->flags & SN_ERR_MASK))
2685 s->flags |= SN_ERR_PRXCOND;
2686 if (!(s->flags & SN_FINST_MASK))
2687 s->flags |= SN_FINST_R;
2688
2689 req->analysers = 0;
2690 req->analyse_exp = TICK_ETERNITY;
2691 return 0;
2692}
2693
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2694/* We reached the stats page through a POST request.
2695 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2696 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2697 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2698int 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]2699{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2700 struct proxy *px = NULL;
2701 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2702
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2703 char key[LINESIZE];
2704 int action = ST_ADM_ACTION_NONE;
2705 int reprocess = 0;
2706
2707 int total_servers = 0;
2708 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2709
2710 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2711 char *st_cur_param = NULL;
2712 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2713
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2714 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2715 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2716
2717 cur_param = next_param = end_params;
2718
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2719 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2720 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2721 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2722 return 1;
2723 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2724 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2725 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2726 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2727 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2728 }
2729
2730 *end_params = '\0';
2731
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2732 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2733
2734 /*
2735 * Parse the parameters in reverse order to only store the last value.
2736 * From the html form, the backend and the action are at the end.
2737 */
2738 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2739 char *value;
2740 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2741
2742 cur_param--;
2743 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2744 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2745 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2746 poffset = (cur_param != first_param ? 1 : 0);
2747 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2748 if ((plen > 0) && (plen <= sizeof(key))) {
2749 strncpy(key, cur_param + poffset, plen);
2750 key[plen - 1] = '\0';
2751 } else {
2752 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2753 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2754 }
2755
2756 /* Parse the value */
2757 value = key;
2758 while (*value != '\0' && *value != '=') {
2759 value++;
2760 }
2761 if (*value == '=') {
2762 /* Ok, a value is found, we can mark the end of the key */
2763 *value++ = '\0';
2764 }
2765
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2766 if (!url_decode(key) || !url_decode(value))
2767 break;
2768
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2769 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2770 if (!px && (strcmp(key, "b") == 0)) {
2771 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2772 /* the backend name is unknown or ambiguous (duplicate names) */
2773 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2774 goto out;
2775 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2776 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2777 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2778 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2779 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2780 }
2781 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2782 action = ST_ADM_ACTION_ENABLE;
2783 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2784 else if (strcmp(value, "stop") == 0) {
2785 action = ST_ADM_ACTION_STOP;
2786 }
2787 else if (strcmp(value, "start") == 0) {
2788 action = ST_ADM_ACTION_START;
2789 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2790 else if (strcmp(value, "shutdown") == 0) {
2791 action = ST_ADM_ACTION_SHUTDOWN;
2792 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2793 else {
2794 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2795 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2796 }
2797 }
2798 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2799 if (!(px && action)) {
2800 /*
2801 * Indicates that we'll need to reprocess the parameters
2802 * as soon as backend and action are known
2803 */
2804 if (!reprocess) {
2805 st_cur_param = cur_param;
2806 st_next_param = next_param;
2807 }
2808 reprocess = 1;
2809 }
2810 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2811 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2812 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2813 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2814 /* Not already in maintenance, we can change the server state */
2815 sv->state |= SRV_MAINTAIN;
2816 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2817 altered_servers++;
2818 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2819 }
2820 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2821 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2822 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2823 /* Already in maintenance, we can change the server state */
2824 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2825 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2826 altered_servers++;
2827 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2828 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2829 break;
2830 case ST_ADM_ACTION_STOP:
2831 case ST_ADM_ACTION_START:
2832 if (action == ST_ADM_ACTION_START)
2833 sv->uweight = sv->iweight;
2834 else
2835 sv->uweight = 0;
2836
2837 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2838 /* we must take care of not pushing the server to full throttle during slow starts */
2839 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2840 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2841 else
2842 sv->eweight = BE_WEIGHT_SCALE;
2843 sv->eweight *= sv->uweight;
2844 } else {
2845 sv->eweight = sv->uweight;
2846 }
2847
2848 /* static LB algorithms are a bit harder to update */
2849 if (px->lbprm.update_server_eweight)
2850 px->lbprm.update_server_eweight(sv);
2851 else if (sv->eweight) {
2852 if (px->lbprm.set_server_status_up)
2853 px->lbprm.set_server_status_up(sv);
2854 }
2855 else {
2856 if (px->lbprm.set_server_status_down)
2857 px->lbprm.set_server_status_down(sv);
2858 }
2859 altered_servers++;
2860 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2861 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2862 case ST_ADM_ACTION_SHUTDOWN:
2863 if (px->state != PR_STSTOPPED) {
2864 struct session *sess, *sess_bck;
2865
2866 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2867 if (sess->srv_conn == sv)
2868 session_shutdown(sess, SN_ERR_KILLED);
2869
2870 altered_servers++;
2871 total_servers++;
2872 }
2873 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2874 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2875 } else {
2876 /* the server name is unknown or ambiguous (duplicate names) */
2877 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2878 }
2879 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2880 if (reprocess && px && action) {
2881 /* Now, we know the backend and the action chosen by the user.
2882 * We can safely restart from the first server parameter
2883 * to reprocess them
2884 */
2885 cur_param = st_cur_param;
2886 next_param = st_next_param;
2887 reprocess = 0;
2888 goto reprocess_servers;
2889 }
2890
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2891 next_param = cur_param;
2892 }
2893 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2894
2895 if (total_servers == 0) {
2896 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2897 }
2898 else if (altered_servers == 0) {
2899 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2900 }
2901 else if (altered_servers == total_servers) {
2902 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2903 }
2904 else {
2905 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2906 }
2907 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2908 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2909}
2910
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2911/* returns a pointer to the first rule which forbids access (deny or http_auth),
2912 * or NULL if everything's OK.
2913 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2914static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2915http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2916{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2917 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2918
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2919 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2920 int ret = 1;
2921
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2922 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2923 continue;
2924
2925 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2926 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2927 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]2928 ret = acl_pass(ret);
2929
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2930 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2931 ret = !ret;
2932 }
2933
2934 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2935 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2936 return NULL; /* no problem */
2937 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2938 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2939 }
2940 }
2941 return NULL;
2942}
2943
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2944/* This stream analyser runs all HTTP request processing which is common to
2945 * frontends and backends, which means blocking ACLs, filters, connection-close,
2946 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2947 * 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]2948 * either needs more data or wants to immediately abort the request (eg: deny,
2949 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2950 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2951int 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]2952{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2953 struct http_txn *txn = &s->txn;
2954 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2955 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2956 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2957 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2958 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2959 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2960
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2961 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2962 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2963 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2964 return 0;
2965 }
2966
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2967 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2968 req->analyse_exp = TICK_ETERNITY;
2969
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2970 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]2971 now_ms, __FUNCTION__,
2972 s,
2973 req,
2974 req->rex, req->wex,
2975 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2976 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2977 req->analysers);
2978
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2979 /* first check whether we have some ACLs set to block this request */
2980 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2981 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]2982
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2983 ret = acl_pass(ret);
2984 if (cond->pol == ACL_COND_UNLESS)
2985 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2986
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2987 if (ret) {
2988 txn->status = 403;
2989 /* let's log the request time */
2990 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2991 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2992 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2993 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2994 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2995 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2996
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2997 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2998 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]2999
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3000 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3001 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3002 do_stats = stats_check_uri(s->rep->prod, txn, px);
3003 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3004 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]3005 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3006 else
3007 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3008
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3009 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3010 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]3011 txn->status = 403;
3012 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3013 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3014 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3015 s->fe->fe_counters.denied_req++;
3016 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3017 s->be->be_counters.denied_req++;
3018 if (s->listener->counters)
3019 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3020 goto return_prx_cond;
3021 }
3022
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3023 /* try headers filters */
3024 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3025 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3026 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3027
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3028 /* has the request been denied ? */
3029 if (txn->flags & TX_CLDENY) {
3030 /* no need to go further */
3031 txn->status = 403;
3032 /* let's log the request time */
3033 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3034 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3035 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3036 goto return_prx_cond;
3037 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3038
3039 /* When a connection is tarpitted, we use the tarpit timeout,
3040 * which may be the same as the connect timeout if unspecified.
3041 * If unset, then set it to zero because we really want it to
3042 * eventually expire. We build the tarpit as an analyser.
3043 */
3044 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3045 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3046 /* wipe the request out so that we can drop the connection early
3047 * if the client closes first.
3048 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3049 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3050 req->analysers = 0; /* remove switching rules etc... */
3051 req->analysers |= AN_REQ_HTTP_TARPIT;
3052 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3053 if (!req->analyse_exp)
3054 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3055 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3056 return 1;
3057 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3058 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3059
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3060 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3061 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3062 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3063 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3064 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3065 * avoid to redo the same work if FE and BE have the same settings (common).
3066 * The method consists in checking if options changed between the two calls
3067 * (implying that either one is non-null, or one of them is non-null and we
3068 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3069 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3070
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3071 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3072 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3073 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3074 (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]3075 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3076
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3077 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3078 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3079 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3080 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3081 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3082 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3083 tmp = TX_CON_WANT_CLO;
3084
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3085 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3086 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3087
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3088 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3089 /* parse the Connection header and possibly clean it */
3090 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3091 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3092 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3093 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3094 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3095 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3096 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3097 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3098 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3099
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3100 /* check if client or config asks for explicit close in KAL/SCL */
3101 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3102 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3103 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3104 (!(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]3105 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3106 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3107 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3108 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3109 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3110
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3111 /* we can be blocked here because the request needs to be authenticated,
3112 * either to pass or to access stats.
3113 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3114 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]3115 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3116
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3117 if (!realm)
3118 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3119
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3120 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]3121 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3122 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3123 /* on 401 we still count one error, because normal browsing
3124 * won't significantly increase the counter but brute force
3125 * attempts will.
3126 */
3127 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3128 goto return_prx_cond;
3129 }
3130
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3131 /* add request headers from the rule sets in the same order */
3132 list_for_each_entry(wl, &px->req_add, list) {
3133 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3134 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]3135 ret = acl_pass(ret);
3136 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3137 ret = !ret;
3138 if (!ret)
3139 continue;
3140 }
3141
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3142 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3143 goto return_bad_req;
3144 }
3145
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3146 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3147 struct stats_admin_rule *stats_admin_rule;
3148
3149 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3150 * FIXME!!! that one is rather dangerous, we want to
3151 * make it follow standard rules (eg: clear req->analysers).
3152 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3153
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3154 /* now check whether we have some admin rules for this request */
3155 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3156 int ret = 1;
3157
3158 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3159 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3160 ret = acl_pass(ret);
3161 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3162 ret = !ret;
3163 }
3164
3165 if (ret) {
3166 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3167 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3168 break;
3169 }
3170 }
3171
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3172 /* Was the status page requested with a POST ? */
3173 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3174 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3175 if (msg->msg_state < HTTP_MSG_100_SENT) {
3176 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3177 * send an HTTP/1.1 100 Continue intermediate response.
3178 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3179 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3180 struct hdr_ctx ctx;
3181 ctx.idx = 0;
3182 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3183 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3184 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3185 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3186 }
3187 }
3188 msg->msg_state = HTTP_MSG_100_SENT;
3189 s->logs.tv_request = now; /* update the request timer to reflect full request */
3190 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3191 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3192 /* we need more data */
3193 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3194 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3195 return 0;
3196 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3197 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3198 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3199 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3200 }
3201
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3202 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3203 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3204 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]3205 s->target = s->rep->prod->conn->target; // for logging only
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3206 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3207 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3208 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3209 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3210 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3211
3212 return 0;
3213
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3214 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3215
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3216 /* check whether we have some ACLs set to redirect this request */
3217 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3218 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3219
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3220 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3221 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]3222 ret = acl_pass(ret);
3223 if (rule->cond->pol == ACL_COND_UNLESS)
3224 ret = !ret;
3225 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3226
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3227 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3228 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3229
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3230 /* build redirect message */
3231 switch(rule->code) {
3232 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3233 msg_fmt = HTTP_303;
3234 break;
3235 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3236 msg_fmt = HTTP_301;
3237 break;
3238 case 302:
3239 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3240 msg_fmt = HTTP_302;
3241 break;
3242 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3243
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3244 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3245 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3246
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3247 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3248 case REDIRECT_TYPE_SCHEME: {
3249 const char *path;
3250 const char *host;
3251 struct hdr_ctx ctx;
3252 int pathlen;
3253 int hostlen;
3254
3255 host = "";
3256 hostlen = 0;
3257 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3258 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]3259 host = ctx.line + ctx.val;
3260 hostlen = ctx.vlen;
3261 }
3262
3263 path = http_get_path(txn);
3264 /* build message using path */
3265 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3266 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]3267 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3268 int qs = 0;
3269 while (qs < pathlen) {
3270 if (path[qs] == '?') {
3271 pathlen = qs;
3272 break;
3273 }
3274 qs++;
3275 }
3276 }
3277 } else {
3278 path = "/";
3279 pathlen = 1;
3280 }
3281
3282 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3283 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3284 goto return_bad_req;
3285
3286 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3287 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3288 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3289
3290 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3291 memcpy(trash.str + trash.len, "://", 3);
3292 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3293
3294 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3295 memcpy(trash.str + trash.len, host, hostlen);
3296 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3297
3298 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3299 memcpy(trash.str + trash.len, path, pathlen);
3300 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3301
3302 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3303 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3304 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3305 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3306 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3307 trash.str[trash.len] = '/';
3308 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3309 }
3310
3311 break;
3312 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3313 case REDIRECT_TYPE_PREFIX: {
3314 const char *path;
3315 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3316
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3317 path = http_get_path(txn);
3318 /* build message using path */
3319 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3320 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]3321 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3322 int qs = 0;
3323 while (qs < pathlen) {
3324 if (path[qs] == '?') {
3325 pathlen = qs;
3326 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3327 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3328 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3329 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3330 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3331 } else {
3332 path = "/";
3333 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3334 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3335
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3336 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3337 goto return_bad_req;
3338
3339 /* add prefix. Note that if prefix == "/", we don't want to
3340 * add anything, otherwise it makes it hard for the user to
3341 * configure a self-redirection.
3342 */
3343 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3344 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3345 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3346 }
3347
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3348 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3349 memcpy(trash.str + trash.len, path, pathlen);
3350 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3351
3352 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3353 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3354 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3355 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3356 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3357 trash.str[trash.len] = '/';
3358 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3359 }
3360
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3361 break;
3362 }
3363 case REDIRECT_TYPE_LOCATION:
3364 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3365 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3366 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3367
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3368 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3369 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3370 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3371 break;
3372 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3373
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3374 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3375 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3376 trash.len += 14;
3377 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3378 trash.len += rule->cookie_len;
3379 memcpy(trash.str + trash.len, "\r\n", 2);
3380 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3381 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3382
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3383 /* add end of headers and the keep-alive/close status.
3384 * We may choose to set keep-alive if the Location begins
3385 * with a slash, because the client will come back to the
3386 * same server.
3387 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3388 txn->status = rule->code;
3389 /* let's log the request time */
3390 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3391
3392 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3393 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3394 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3395 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3396 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3397 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3398 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3399 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3400 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3401 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3402 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3403 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3404 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3405 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3406 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3407 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3408 trash.len += 4;
3409 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3410 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3411 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3412 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3413 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3414 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3415 txn->req.msg_state = HTTP_MSG_CLOSED;
3416 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3417 break;
3418 } else {
3419 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3420 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3421 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3422 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3423 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3424 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3425 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3426 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3427 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3428 goto return_prx_cond;
3429 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3430 }
3431 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3432
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3433 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3434 * If this happens, then the data will not come immediately, so we must
3435 * send all what we have without waiting. Note that due to the small gain
3436 * 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]3437 * 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]3438 * itself once used.
3439 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3440 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3441
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3442 /* that's OK for us now, let's move on to next analysers */
3443 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3444
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3445 return_bad_req:
3446 /* We centralize bad requests processing here */
3447 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3448 /* we detected a parsing error. We want to archive this request
3449 * in the dedicated proxy area for later troubleshooting.
3450 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3451 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]3452 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3453
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3454 txn->req.msg_state = HTTP_MSG_ERROR;
3455 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3456 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3457
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3458 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3459 if (s->listener->counters)
3460 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3461
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3462 return_prx_cond:
3463 if (!(s->flags & SN_ERR_MASK))
3464 s->flags |= SN_ERR_PRXCOND;
3465 if (!(s->flags & SN_FINST_MASK))
3466 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3467
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3468 req->analysers = 0;
3469 req->analyse_exp = TICK_ETERNITY;
3470 return 0;
3471}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3472
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3473/* This function performs all the processing enabled for the current request.
3474 * It returns 1 if the processing can continue on next analysers, or zero if it
3475 * needs more data, encounters an error, or wants to immediately abort the
3476 * request. It relies on buffers flags, and updates s->req->analysers.
3477 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3478int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3479{
3480 struct http_txn *txn = &s->txn;
3481 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3482
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3483 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3484 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3485 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3486 return 0;
3487 }
3488
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3489 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]3490 now_ms, __FUNCTION__,
3491 s,
3492 req,
3493 req->rex, req->wex,
3494 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3495 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3496 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3497
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3498 if (s->fe->comp || s->be->comp)
3499 select_compression_request_header(s, req->buf);
3500
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3501 /*
3502 * Right now, we know that we have processed the entire headers
3503 * and that unwanted requests have been filtered out. We can do
3504 * whatever we want with the remaining request. Also, now we
3505 * may have separate values for ->fe, ->be.
3506 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3508 /*
3509 * If HTTP PROXY is set we simply get remote server address
3510 * parsing incoming request.
3511 */
3512 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3513 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]3514 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3515
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3516 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3517 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3518 * Note that doing so might move headers in the request, but
3519 * the fields will stay coherent and the URI will not move.
3520 * This should only be performed in the backend.
3521 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3522 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3523 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3524 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3525
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3526 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3527 * 8: the appsession cookie was looked up very early in 1.2,
3528 * so let's do the same now.
3529 */
3530
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3531 /* It needs to look into the URI unless persistence must be ignored */
3532 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3533 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]3534 }
3535
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3536 /* add unique-id if "header-unique-id" is specified */
3537
3538 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3539 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3540
3541 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3542 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3543 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3544 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3545 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]3546 goto return_bad_req;
3547 }
3548
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3549 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3550 * 9: add X-Forwarded-For if either the frontend or the backend
3551 * asks for it.
3552 */
3553 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3554 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3555 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3556 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3557 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]3558 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3559 /* The header is set to be added only if none is present
3560 * and we found it, so don't do anything.
3561 */
3562 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3563 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3564 /* Add an X-Forwarded-For header unless the source IP is
3565 * in the 'except' network range.
3566 */
3567 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3568 (((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]3569 != s->fe->except_net.s_addr) &&
3570 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3571 (((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3572 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3573 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3574 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3575 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3576
3577 /* Note: we rely on the backend to get the header name to be used for
3578 * x-forwarded-for, because the header is really meant for the backends.
3579 * However, if the backend did not specify any option, we have to rely
3580 * on the frontend's header name.
3581 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3582 if (s->be->fwdfor_hdr_len) {
3583 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3584 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3585 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3586 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3587 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3588 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3589 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]3590
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3591 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]3592 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3593 }
3594 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3595 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3596 /* FIXME: for the sake of completeness, we should also support
3597 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3598 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3599 int len;
3600 char pn[INET6_ADDRSTRLEN];
3601 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3602 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3603 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3604
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3605 /* Note: we rely on the backend to get the header name to be used for
3606 * x-forwarded-for, because the header is really meant for the backends.
3607 * However, if the backend did not specify any option, we have to rely
3608 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3609 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3610 if (s->be->fwdfor_hdr_len) {
3611 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3612 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3613 } else {
3614 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3615 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3616 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3617 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3618
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3619 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]3620 goto return_bad_req;
3621 }
3622 }
3623
3624 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3625 * 10: add X-Original-To if either the frontend or the backend
3626 * asks for it.
3627 */
3628 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3629
3630 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3631 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3632 /* Add an X-Original-To header unless the destination IP is
3633 * in the 'except' network range.
3634 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3635 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3636
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3637 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3638 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3639 (((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]3640 != s->fe->except_to.s_addr) &&
3641 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3642 (((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3643 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3644 int len;
3645 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3646 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3647
3648 /* Note: we rely on the backend to get the header name to be used for
3649 * x-original-to, because the header is really meant for the backends.
3650 * However, if the backend did not specify any option, we have to rely
3651 * on the frontend's header name.
3652 */
3653 if (s->be->orgto_hdr_len) {
3654 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3655 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3656 } else {
3657 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3658 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3659 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3660 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]3661
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3662 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]3663 goto return_bad_req;
3664 }
3665 }
3666 }
3667
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3668 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3669 * If an "Upgrade" token is found, the header is left untouched in order not to have
3670 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3671 * "Upgrade" is present in the Connection header.
3672 */
3673 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3674 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3675 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3676 unsigned int want_flags = 0;
3677
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3678 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3679 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3680 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3681 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3682 want_flags |= TX_CON_CLO_SET;
3683 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3684 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3685 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3686 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3687 want_flags |= TX_CON_KAL_SET;
3688 }
3689
3690 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3691 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3692 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3693
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3694
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3695 /* If we have no server assigned yet and we're balancing on url_param
3696 * with a POST request, we may be interested in checking the body for
3697 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3698 */
3699 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3700 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3701 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3702 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3703 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3704 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3705 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3706
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3707 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3708 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3709#ifdef TCP_QUICKACK
3710 /* We expect some data from the client. Unless we know for sure
3711 * we already have a full request, we have to re-enable quick-ack
3712 * in case we previously disabled it, otherwise we might cause
3713 * the client to delay further data.
3714 */
3715 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3716 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3717 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3718 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]3719#endif
3720 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3721
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3722 /*************************************************************
3723 * OK, that's finished for the headers. We have done what we *
3724 * could. Let's switch to the DATA state. *
3725 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3726 req->analyse_exp = TICK_ETERNITY;
3727 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3728
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3729 /* if the server closes the connection, we want to immediately react
3730 * and close the socket to save packets and syscalls.
3731 */
3732 req->cons->flags |= SI_FL_NOHALF;
3733
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3734 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3735 /* OK let's go on with the BODY now */
3736 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3737
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3738 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3739 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3740 /* we detected a parsing error. We want to archive this request
3741 * in the dedicated proxy area for later troubleshooting.
3742 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3743 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]3744 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3745
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3746 txn->req.msg_state = HTTP_MSG_ERROR;
3747 txn->status = 400;
3748 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3749 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3750
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3751 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3752 if (s->listener->counters)
3753 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3754
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3755 if (!(s->flags & SN_ERR_MASK))
3756 s->flags |= SN_ERR_PRXCOND;
3757 if (!(s->flags & SN_FINST_MASK))
3758 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3759 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3760}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3761
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3762/* This function is an analyser which processes the HTTP tarpit. It always
3763 * returns zero, at the beginning because it prevents any other processing
3764 * from occurring, and at the end because it terminates the request.
3765 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3766int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3767{
3768 struct http_txn *txn = &s->txn;
3769
3770 /* This connection is being tarpitted. The CLIENT side has
3771 * already set the connect expiration date to the right
3772 * timeout. We just have to check that the client is still
3773 * there and that the timeout has not expired.
3774 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3775 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3776 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3777 !tick_is_expired(req->analyse_exp, now_ms))
3778 return 0;
3779
3780 /* We will set the queue timer to the time spent, just for
3781 * logging purposes. We fake a 500 server error, so that the
3782 * attacker will not suspect his connection has been tarpitted.
3783 * It will not cause trouble to the logs because we can exclude
3784 * the tarpitted connections by filtering on the 'PT' status flags.
3785 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3786 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3787
3788 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3789 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3790 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3791
3792 req->analysers = 0;
3793 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3794
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3795 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3796 if (s->listener->counters)
3797 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3798
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3799 if (!(s->flags & SN_ERR_MASK))
3800 s->flags |= SN_ERR_PRXCOND;
3801 if (!(s->flags & SN_FINST_MASK))
3802 s->flags |= SN_FINST_T;
3803 return 0;
3804}
3805
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3806/* This function is an analyser which processes the HTTP request body. It looks
3807 * for parameters to be used for the load balancing algorithm (url_param). It
3808 * must only be called after the standard HTTP request processing has occurred,
3809 * because it expects the request to be parsed. It returns zero if it needs to
3810 * read more data, or 1 once it has completed its analysis.
3811 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3812int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3813{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3814 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3815 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3816 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3817
3818 /* We have to parse the HTTP request body to find any required data.
3819 * "balance url_param check_post" should have been the only way to get
3820 * into this. We were brought here after HTTP header analysis, so all
3821 * related structures are ready.
3822 */
3823
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3824 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3825 goto missing_data;
3826
3827 if (msg->msg_state < HTTP_MSG_100_SENT) {
3828 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3829 * send an HTTP/1.1 100 Continue intermediate response.
3830 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3831 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3832 struct hdr_ctx ctx;
3833 ctx.idx = 0;
3834 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3835 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3836 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3837 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3838 }
3839 }
3840 msg->msg_state = HTTP_MSG_100_SENT;
3841 }
3842
3843 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3844 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3845 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3846 * is still null. We must save the body in msg->next because it
3847 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3848 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3849 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3850
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3851 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3852 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3853 else
3854 msg->msg_state = HTTP_MSG_DATA;
3855 }
3856
3857 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3858 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3859 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3860 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3861 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3862 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3863
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3864 if (!ret)
3865 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3866 else if (ret < 0) {
3867 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3868 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3869 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3870 }
3871
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3872 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3873 * We have the first data byte is in msg->sov. We're waiting for at
3874 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3875 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3876
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3877 if (msg->body_len < limit)
3878 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3879
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3880 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3881 goto http_end;
3882
3883 missing_data:
3884 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3885 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3886 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3887 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3888 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3889
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3890 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3891 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3892 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3893
3894 if (!(s->flags & SN_ERR_MASK))
3895 s->flags |= SN_ERR_CLITO;
3896 if (!(s->flags & SN_FINST_MASK))
3897 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3898 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3899 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3900
3901 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3902 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]3903 /* Not enough data. We'll re-use the http-request
3904 * timeout here. Ideally, we should set the timeout
3905 * relative to the accept() date. We just set the
3906 * request timeout once at the beginning of the
3907 * request.
3908 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3909 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3910 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3911 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3912 return 0;
3913 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3914
3915 http_end:
3916 /* The situation will not evolve, so let's give up on the analysis. */
3917 s->logs.tv_request = now; /* update the request timer to reflect full request */
3918 req->analysers &= ~an_bit;
3919 req->analyse_exp = TICK_ETERNITY;
3920 return 1;
3921
3922 return_bad_req: /* let's centralize all bad requests */
3923 txn->req.msg_state = HTTP_MSG_ERROR;
3924 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3925 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3926
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3927 if (!(s->flags & SN_ERR_MASK))
3928 s->flags |= SN_ERR_PRXCOND;
3929 if (!(s->flags & SN_FINST_MASK))
3930 s->flags |= SN_FINST_R;
3931
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3932 return_err_msg:
3933 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3934 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3935 if (s->listener->counters)
3936 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3937 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3938}
3939
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3940/* send a server's name with an outgoing request over an established connection.
3941 * Note: this function is designed to be called once the request has been scheduled
3942 * for being forwarded. This is the reason why it rewinds the buffer before
3943 * proceeding.
3944 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3945int 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]3946
3947 struct hdr_ctx ctx;
3948
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3949 char *hdr_name = be->server_id_hdr_name;
3950 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3951 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3952 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3953 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3954
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3955 ctx.idx = 0;
3956
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3957 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3958 if (old_o) {
3959 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3960 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3961 }
3962
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3963 old_i = chn->buf->i;
3964 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]3965 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3966 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3967 }
3968
3969 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3970 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3971 memcpy(hdr_val, hdr_name, hdr_name_len);
3972 hdr_val += hdr_name_len;
3973 *hdr_val++ = ':';
3974 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3975 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
3976 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]3977
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3978 if (old_o) {
3979 /* If this was a forwarded request, we must readjust the amount of
3980 * data to be forwarded in order to take into account the size
3981 * variations.
3982 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3983 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3984 }
3985
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3986 return 0;
3987}
3988
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3989/* Terminate current transaction and prepare a new one. This is very tricky
3990 * right now but it works.
3991 */
3992void http_end_txn_clean_session(struct session *s)
3993{
3994 /* FIXME: We need a more portable way of releasing a backend's and a
3995 * server's connections. We need a safer way to reinitialize buffer
3996 * flags. We also need a more accurate method for computing per-request
3997 * data.
3998 */
3999 http_silent_debug(__LINE__, s);
4000
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4001 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4002 si_shutr(s->req->cons);
4003 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4004
4005 http_silent_debug(__LINE__, s);
4006
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4007 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4008 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4009 if (unlikely(s->srv_conn))
4010 sess_change_server(s, NULL);
4011 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4012
4013 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4014 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4015 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4016
4017 if (s->txn.status) {
4018 int n;
4019
4020 n = s->txn.status / 100;
4021 if (n < 1 || n > 5)
4022 n = 0;
4023
4024 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4025 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4026
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4027 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4028 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4029 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4030 }
4031
4032 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4033 s->logs.bytes_in -= s->req->buf->i;
4034 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4035
4036 /* let's do a final log if we need it */
4037 if (s->logs.logwait &&
4038 !(s->flags & SN_MONITOR) &&
4039 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4040 s->do_log(s);
4041 }
4042
4043 s->logs.accept_date = date; /* user-visible date for logging */
4044 s->logs.tv_accept = now; /* corrected date for internal use */
4045 tv_zero(&s->logs.tv_request);
4046 s->logs.t_queue = -1;
4047 s->logs.t_connect = -1;
4048 s->logs.t_data = -1;
4049 s->logs.t_close = 0;
4050 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4051 s->logs.srv_queue_size = 0; /* we will get this number soon */
4052
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4053 s->logs.bytes_in = s->req->total = s->req->buf->i;
4054 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4055
4056 if (s->pend_pos)
4057 pendconn_free(s->pend_pos);
4058
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4059 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4060 if (s->flags & SN_CURR_SESS) {
4061 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4062 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4063 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4064 if (may_dequeue_tasks(objt_server(s->target), s->be))
4065 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4066 }
4067
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4068 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4069
4070 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4071 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4072 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4073 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4074 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4075 s->req->cons->err_loc = NULL;
4076 s->req->cons->exp = TICK_ETERNITY;
4077 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4078 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4079 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]4080 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]4081 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
4082 s->txn.meth = 0;
4083 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4084 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4085 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4086 s->req->cons->flags |= SI_FL_INDEP_STR;
4087
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4088 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4089 s->req->flags |= CF_NEVER_WAIT;
4090 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4091 }
4092
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4093 /* if the request buffer is not empty, it means we're
4094 * about to process another request, so send pending
4095 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4096 * Just don't do this if the buffer is close to be full,
4097 * because the request will wait for it to flush a little
4098 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4099 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4100 if (s->req->buf->i) {
4101 if (s->rep->buf->o &&
4102 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4103 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]4104 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4105 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4106
4107 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4108 channel_auto_read(s->req);
4109 channel_auto_close(s->req);
4110 channel_auto_read(s->rep);
4111 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4112
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4113 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4114 s->rep->analysers = 0;
4115
4116 http_silent_debug(__LINE__, s);
4117}
4118
4119
4120/* This function updates the request state machine according to the response
4121 * state machine and buffer flags. It returns 1 if it changes anything (flag
4122 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4123 * it is only used to find when a request/response couple is complete. Both
4124 * this function and its equivalent should loop until both return zero. It
4125 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4126 */
4127int http_sync_req_state(struct session *s)
4128{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4129 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4130 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4131 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4132 unsigned int old_state = txn->req.msg_state;
4133
4134 http_silent_debug(__LINE__, s);
4135 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4136 return 0;
4137
4138 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4139 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4140 * We can shut the read side unless we want to abort_on_close,
4141 * or we have a POST request. The issue with POST requests is
4142 * that some browsers still send a CRLF after the request, and
4143 * this CRLF must be read so that it does not remain in the kernel
4144 * buffers, otherwise a close could cause an RST on some systems
4145 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4146 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4147 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4148 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4149
4150 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4151 goto wait_other_side;
4152
4153 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4154 /* The server has not finished to respond, so we
4155 * don't want to move in order not to upset it.
4156 */
4157 goto wait_other_side;
4158 }
4159
4160 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4161 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4162 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4163 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4164 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4165 goto wait_other_side;
4166 }
4167
4168 /* When we get here, it means that both the request and the
4169 * response have finished receiving. Depending on the connection
4170 * mode, we'll have to wait for the last bytes to leave in either
4171 * direction, and sometimes for a close to be effective.
4172 */
4173
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4174 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4175 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4176 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4177 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4178 }
4179 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4180 /* Option forceclose is set, or either side wants to close,
4181 * let's enforce it now that we're not expecting any new
4182 * data to come. The caller knows the session is complete
4183 * once both states are CLOSED.
4184 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4185 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4186 channel_shutr_now(chn);
4187 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4188 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4189 }
4190 else {
4191 /* The last possible modes are keep-alive and tunnel. Since tunnel
4192 * mode does not set the body analyser, we can't reach this place
4193 * in tunnel mode, so we're left with keep-alive only.
4194 * This mode is currently not implemented, we switch to tunnel mode.
4195 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4196 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4197 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4198 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4199 }
4200
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4201 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4202 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4203 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4204
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4205 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4206 txn->req.msg_state = HTTP_MSG_CLOSING;
4207 goto http_msg_closing;
4208 }
4209 else {
4210 txn->req.msg_state = HTTP_MSG_CLOSED;
4211 goto http_msg_closed;
4212 }
4213 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4214 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4215 }
4216
4217 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4218 http_msg_closing:
4219 /* nothing else to forward, just waiting for the output buffer
4220 * to be empty and for the shutw_now to take effect.
4221 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4222 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4223 txn->req.msg_state = HTTP_MSG_CLOSED;
4224 goto http_msg_closed;
4225 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4226 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4227 txn->req.msg_state = HTTP_MSG_ERROR;
4228 goto wait_other_side;
4229 }
4230 }
4231
4232 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4233 http_msg_closed:
4234 goto wait_other_side;
4235 }
4236
4237 wait_other_side:
4238 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4239 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4240}
4241
4242
4243/* This function updates the response state machine according to the request
4244 * state machine and buffer flags. It returns 1 if it changes anything (flag
4245 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4246 * it is only used to find when a request/response couple is complete. Both
4247 * this function and its equivalent should loop until both return zero. It
4248 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4249 */
4250int http_sync_res_state(struct session *s)
4251{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4252 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4253 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4254 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4255 unsigned int old_state = txn->rsp.msg_state;
4256
4257 http_silent_debug(__LINE__, s);
4258 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4259 return 0;
4260
4261 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4262 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4263 * still monitor the server connection for a possible close
4264 * while the request is being uploaded, so we don't disable
4265 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4266 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4267 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4268
4269 if (txn->req.msg_state == HTTP_MSG_ERROR)
4270 goto wait_other_side;
4271
4272 if (txn->req.msg_state < HTTP_MSG_DONE) {
4273 /* The client seems to still be sending data, probably
4274 * because we got an error response during an upload.
4275 * We have the choice of either breaking the connection
4276 * or letting it pass through. Let's do the later.
4277 */
4278 goto wait_other_side;
4279 }
4280
4281 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4282 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4283 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4284 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4285 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4286 goto wait_other_side;
4287 }
4288
4289 /* When we get here, it means that both the request and the
4290 * response have finished receiving. Depending on the connection
4291 * mode, we'll have to wait for the last bytes to leave in either
4292 * direction, and sometimes for a close to be effective.
4293 */
4294
4295 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4296 /* Server-close mode : shut read and wait for the request
4297 * side to close its output buffer. The caller will detect
4298 * when we're in DONE and the other is in CLOSED and will
4299 * catch that for the final cleanup.
4300 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4301 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4302 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4303 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4304 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4305 /* Option forceclose is set, or either side wants to close,
4306 * let's enforce it now that we're not expecting any new
4307 * data to come. The caller knows the session is complete
4308 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4309 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4310 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4311 channel_shutr_now(chn);
4312 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4313 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4314 }
4315 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4316 /* The last possible modes are keep-alive and tunnel. Since tunnel
4317 * mode does not set the body analyser, we can't reach this place
4318 * in tunnel mode, so we're left with keep-alive only.
4319 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4320 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4321 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4322 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4323 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4324 }
4325
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4326 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4327 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4328 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4329 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4330 goto http_msg_closing;
4331 }
4332 else {
4333 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4334 goto http_msg_closed;
4335 }
4336 }
4337 goto wait_other_side;
4338 }
4339
4340 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4341 http_msg_closing:
4342 /* nothing else to forward, just waiting for the output buffer
4343 * to be empty and for the shutw_now to take effect.
4344 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4345 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4346 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4347 goto http_msg_closed;
4348 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4349 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4350 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4351 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4352 if (objt_server(s->target))
4353 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4354 goto wait_other_side;
4355 }
4356 }
4357
4358 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4359 http_msg_closed:
4360 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4361 bi_erase(chn);
4362 channel_auto_close(chn);
4363 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4364 goto wait_other_side;
4365 }
4366
4367 wait_other_side:
4368 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4369 /* We force the response to leave immediately if we're waiting for the
4370 * other side, since there is no pending shutdown to push it out.
4371 */
4372 if (!channel_is_empty(chn))
4373 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4374 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4375}
4376
4377
4378/* Resync the request and response state machines. Return 1 if either state
4379 * changes.
4380 */
4381int http_resync_states(struct session *s)
4382{
4383 struct http_txn *txn = &s->txn;
4384 int old_req_state = txn->req.msg_state;
4385 int old_res_state = txn->rsp.msg_state;
4386
4387 http_silent_debug(__LINE__, s);
4388 http_sync_req_state(s);
4389 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4390 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4391 if (!http_sync_res_state(s))
4392 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4393 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4394 if (!http_sync_req_state(s))
4395 break;
4396 }
4397 http_silent_debug(__LINE__, s);
4398 /* OK, both state machines agree on a compatible state.
4399 * There are a few cases we're interested in :
4400 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4401 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4402 * directions, so let's simply disable both analysers.
4403 * - HTTP_MSG_CLOSED on the response only means we must abort the
4404 * request.
4405 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4406 * with server-close mode means we've completed one request and we
4407 * must re-initialize the server connection.
4408 */
4409
4410 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4411 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4412 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4413 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4414 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4415 channel_auto_close(s->req);
4416 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4417 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4418 channel_auto_close(s->rep);
4419 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4420 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4421 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4422 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4423 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4424 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4425 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4426 channel_auto_close(s->rep);
4427 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4428 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4429 channel_abort(s->req);
4430 channel_auto_close(s->req);
4431 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4432 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4433 }
4434 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4435 txn->rsp.msg_state == HTTP_MSG_DONE &&
4436 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4437 /* server-close: terminate this server connection and
4438 * reinitialize a fresh-new transaction.
4439 */
4440 http_end_txn_clean_session(s);
4441 }
4442
4443 http_silent_debug(__LINE__, s);
4444 return txn->req.msg_state != old_req_state ||
4445 txn->rsp.msg_state != old_res_state;
4446}
4447
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4448/* This function is an analyser which forwards request body (including chunk
4449 * sizes if any). It is called as soon as we must forward, even if we forward
4450 * zero byte. The only situation where it must not be called is when we're in
4451 * tunnel mode and we want to forward till the close. It's used both to forward
4452 * remaining data and to resync after end of body. It expects the msg_state to
4453 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4454 * 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]4455 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4456 * bytes of pending data + the headers if not already done (between sol and sov).
4457 * 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]4458 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4459int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4460{
4461 struct http_txn *txn = &s->txn;
4462 struct http_msg *msg = &s->txn.req;
4463
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4464 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4465 return 0;
4466
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4467 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]4468 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4469 /* Output closed while we were sending data. We must abort and
4470 * wake the other side up.
4471 */
4472 msg->msg_state = HTTP_MSG_ERROR;
4473 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4474 return 1;
4475 }
4476
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4477 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4478 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4479
4480 /* Note that we don't have to send 100-continue back because we don't
4481 * need the data to complete our job, and it's up to the server to
4482 * decide whether to return 100, 417 or anything else in return of
4483 * an "Expect: 100-continue" header.
4484 */
4485
4486 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4487 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4488 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4489 * is still null. We must save the body in msg->next because it
4490 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4491 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4492 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4493
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4494 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4495 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4496 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4497 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4498 }
4499
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4500 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4501 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4502
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4503 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4504 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4505 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4506 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4507 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4508 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4509 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4510 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4511 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4512
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4513 if (msg->msg_state == HTTP_MSG_DATA) {
4514 /* must still forward */
4515 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4516 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4517
4518 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4519 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4520 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4521 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4522 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4523 }
4524 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4525 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4526 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4527 * TRAILERS state.
4528 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4529 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4530
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4531 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4532 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4533 else if (ret < 0) {
4534 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4535 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4536 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]4537 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4538 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4539 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4540 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4541 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4542 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4543 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4544
4545 if (ret == 0)
4546 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4547 else if (ret < 0) {
4548 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4549 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4550 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]4551 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4552 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4553 /* we're in MSG_CHUNK_SIZE now */
4554 }
4555 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4556 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4557
4558 if (ret == 0)
4559 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4560 else if (ret < 0) {
4561 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4562 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4563 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]4564 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4565 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4566 /* we're in HTTP_MSG_DONE now */
4567 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4568 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4569 int old_state = msg->msg_state;
4570
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4571 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4572 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4573 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4574 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4575 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4576 if (http_resync_states(s)) {
4577 /* some state changes occurred, maybe the analyser
4578 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4579 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4580 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4581 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4582 /* request errors are most likely due to
4583 * the server aborting the transfer.
4584 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4585 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4586 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4587 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4588 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4589 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4590 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4591 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4592 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4593
4594 /* If "option abortonclose" is set on the backend, we
4595 * want to monitor the client's connection and forward
4596 * any shutdown notification to the server, which will
4597 * decide whether to close or to go on processing the
4598 * request.
4599 */
4600 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4601 channel_auto_read(req);
4602 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4603 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4604 else if (s->txn.meth == HTTP_METH_POST) {
4605 /* POST requests may require to read extra CRLF
4606 * sent by broken browsers and which could cause
4607 * an RST to be sent upon close on some systems
4608 * (eg: Linux).
4609 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4610 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4611 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4612
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4613 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4614 }
4615 }
4616
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4617 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4618 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4619 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4620 if (!(s->flags & SN_ERR_MASK))
4621 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4622 if (!(s->flags & SN_FINST_MASK)) {
4623 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4624 s->flags |= SN_FINST_H;
4625 else
4626 s->flags |= SN_FINST_D;
4627 }
4628
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4629 s->fe->fe_counters.cli_aborts++;
4630 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4631 if (objt_server(s->target))
4632 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4633
4634 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4635 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4636
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4637 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4638 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4639 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4640
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4641 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4642 * 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]4643 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4644 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4645 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4646
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4647 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4648 * 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]4649 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4650 * modes are already handled by the stream sock layer. We must not do
4651 * this in content-length mode because it could present the MSG_MORE
4652 * flag with the last block of forwarded data, which would cause an
4653 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4654 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4655 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4656 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4657
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4658 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4659 return 0;
4660
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4661 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4662 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4663 if (s->listener->counters)
4664 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4665 return_bad_req_stats_ok:
4666 txn->req.msg_state = HTTP_MSG_ERROR;
4667 if (txn->status) {
4668 /* Note: we don't send any error if some data were already sent */
4669 stream_int_retnclose(req->prod, NULL);
4670 } else {
4671 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4672 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4673 }
4674 req->analysers = 0;
4675 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]4676
4677 if (!(s->flags & SN_ERR_MASK))
4678 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4679 if (!(s->flags & SN_FINST_MASK)) {
4680 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4681 s->flags |= SN_FINST_H;
4682 else
4683 s->flags |= SN_FINST_D;
4684 }
4685 return 0;
4686
4687 aborted_xfer:
4688 txn->req.msg_state = HTTP_MSG_ERROR;
4689 if (txn->status) {
4690 /* Note: we don't send any error if some data were already sent */
4691 stream_int_retnclose(req->prod, NULL);
4692 } else {
4693 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4694 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4695 }
4696 req->analysers = 0;
4697 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4698
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4699 s->fe->fe_counters.srv_aborts++;
4700 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4701 if (objt_server(s->target))
4702 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4703
4704 if (!(s->flags & SN_ERR_MASK))
4705 s->flags |= SN_ERR_SRVCL;
4706 if (!(s->flags & SN_FINST_MASK)) {
4707 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4708 s->flags |= SN_FINST_H;
4709 else
4710 s->flags |= SN_FINST_D;
4711 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4712 return 0;
4713}
4714
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4715/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4716 * processing can continue on next analysers, or zero if it either needs more
4717 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4718 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4719 * when it has nothing left to do, and may remove any analyser when it wants to
4720 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4721 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4722int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4723{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4724 struct http_txn *txn = &s->txn;
4725 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4726 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4727 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4728 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4729 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4730
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4731 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]4732 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4733 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4734 rep,
4735 rep->rex, rep->wex,
4736 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4737 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4738 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4739
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4740 /*
4741 * Now parse the partial (or complete) lines.
4742 * We will check the response syntax, and also join multi-line
4743 * headers. An index of all the lines will be elaborated while
4744 * parsing.
4745 *
4746 * For the parsing, we use a 28 states FSM.
4747 *
4748 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4749 * rep->buf->p = beginning of response
4750 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4751 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4752 * msg->eol = end of current header or line (LF or CRLF)
4753 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4754 */
4755
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4756 /* There's a protected area at the end of the buffer for rewriting
4757 * purposes. We don't want to start to parse the request if the
4758 * protected area is affected, because we may have to move processed
4759 * data later, which is much more complicated.
4760 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4761 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4762 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4763 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4764 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4765 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4766 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4767 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4768 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4769 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4770 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4771 return 0;
4772 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4773 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4774 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4775 }
4776
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4777 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4778 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4779 }
4780
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4781 /* 1: we might have to print this header in debug mode */
4782 if (unlikely((global.mode & MODE_DEBUG) &&
4783 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4784 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4785 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4786
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4787 sol = rep->buf->p;
4788 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4789 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4790
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4791 sol += hdr_idx_first_pos(&txn->hdr_idx);
4792 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4793
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4794 while (cur_idx) {
4795 eol = sol + txn->hdr_idx.v[cur_idx].len;
4796 debug_hdr("srvhdr", s, sol, eol);
4797 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4798 cur_idx = txn->hdr_idx.v[cur_idx].next;
4799 }
4800 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4801
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4802 /*
4803 * Now we quickly check if we have found a full valid response.
4804 * If not so, we check the FD and buffer states before leaving.
4805 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4806 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4807 * responses are checked first.
4808 *
4809 * Depending on whether the client is still there or not, we
4810 * may send an error response back or not. Note that normally
4811 * we should only check for HTTP status there, and check I/O
4812 * errors somewhere else.
4813 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4814
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4815 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4816 /* Invalid response */
4817 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4818 /* we detected a parsing error. We want to archive this response
4819 * in the dedicated proxy area for later troubleshooting.
4820 */
4821 hdr_response_bad:
4822 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4823 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]4824
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4825 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4826 if (objt_server(s->target)) {
4827 objt_server(s->target)->counters.failed_resp++;
4828 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4829 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4830 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4831 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4832 rep->analysers = 0;
4833 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4834 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4835 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4836 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4837
4838 if (!(s->flags & SN_ERR_MASK))
4839 s->flags |= SN_ERR_PRXCOND;
4840 if (!(s->flags & SN_FINST_MASK))
4841 s->flags |= SN_FINST_H;
4842
4843 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4844 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4845
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4846 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4847 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4848 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4849 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4850 goto hdr_response_bad;
4851 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4852
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4853 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4854 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4855 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4856 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]4857
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4858 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4859 if (objt_server(s->target)) {
4860 objt_server(s->target)->counters.failed_resp++;
4861 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4862 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4863
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4864 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4865 rep->analysers = 0;
4866 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4867 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4868 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4869 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4870
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4871 if (!(s->flags & SN_ERR_MASK))
4872 s->flags |= SN_ERR_SRVCL;
4873 if (!(s->flags & SN_FINST_MASK))
4874 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4875 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4876 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4877
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4878 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4879 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4880 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4881 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]4882
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4883 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4884 if (objt_server(s->target)) {
4885 objt_server(s->target)->counters.failed_resp++;
4886 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4887 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4888
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4889 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4890 rep->analysers = 0;
4891 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4892 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4893 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4894 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4895
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4896 if (!(s->flags & SN_ERR_MASK))
4897 s->flags |= SN_ERR_SRVTO;
4898 if (!(s->flags & SN_FINST_MASK))
4899 s->flags |= SN_FINST_H;
4900 return 0;
4901 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4902
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4903 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4904 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4905 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4906 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]4907
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4908 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4909 if (objt_server(s->target)) {
4910 objt_server(s->target)->counters.failed_resp++;
4911 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4912 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4913
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4914 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4915 rep->analysers = 0;
4916 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4917 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4918 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4919 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4920
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4921 if (!(s->flags & SN_ERR_MASK))
4922 s->flags |= SN_ERR_SRVCL;
4923 if (!(s->flags & SN_FINST_MASK))
4924 s->flags |= SN_FINST_H;
4925 return 0;
4926 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4927
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4928 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4929 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4930 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4931 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]4932
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4933 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4934 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4935 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4936
4937 if (!(s->flags & SN_ERR_MASK))
4938 s->flags |= SN_ERR_CLICL;
4939 if (!(s->flags & SN_FINST_MASK))
4940 s->flags |= SN_FINST_H;
4941
4942 /* process_session() will take care of the error */
4943 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4944 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4945
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4946 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4947 return 0;
4948 }
4949
4950 /* More interesting part now : we know that we have a complete
4951 * response which at least looks like HTTP. We have an indicator
4952 * of each header's length, so we can parse them quickly.
4953 */
4954
4955 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4956 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]4957
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4958 /*
4959 * 1: get the status code
4960 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4961 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4962 if (n < 1 || n > 5)
4963 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4964 /* when the client triggers a 4xx from the server, it's most often due
4965 * to a missing object or permission. These events should be tracked
4966 * because if they happen often, it may indicate a brute force or a
4967 * vulnerability scan.
4968 */
4969 if (n == 4)
4970 session_inc_http_err_ctr(s);
4971
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4972 if (objt_server(s->target))
4973 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4974
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4975 /* check if the response is HTTP/1.1 or above */
4976 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4977 ((rep->buf->p[5] > '1') ||
4978 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4979 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4980
4981 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4982 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]4983
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4984 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4985 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4986
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4987 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]4988
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]4989 /* Adjust server's health based on status code. Note: status codes 501
4990 * and 505 are triggered on demand by client request, so we must not
4991 * count them as server failures.
4992 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4993 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4994 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4995 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4996 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4997 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4998 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4999
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5000 /*
5001 * 2: check for cacheability.
5002 */
5003
5004 switch (txn->status) {
5005 case 200:
5006 case 203:
5007 case 206:
5008 case 300:
5009 case 301:
5010 case 410:
5011 /* RFC2616 @13.4:
5012 * "A response received with a status code of
5013 * 200, 203, 206, 300, 301 or 410 MAY be stored
5014 * by a cache (...) unless a cache-control
5015 * directive prohibits caching."
5016 *
5017 * RFC2616 @9.5: POST method :
5018 * "Responses to this method are not cacheable,
5019 * unless the response includes appropriate
5020 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5021 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5022 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5023 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5024 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5025 break;
5026 default:
5027 break;
5028 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5029
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5030 /*
5031 * 3: we may need to capture headers
5032 */
5033 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5034 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5035 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5036 txn->rsp.cap, s->fe->rsp_cap);
5037
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5038 /* 4: determine the transfer-length.
5039 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5040 * the presence of a message-body in a RESPONSE and its transfer length
5041 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5042 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5043 * All responses to the HEAD request method MUST NOT include a
5044 * message-body, even though the presence of entity-header fields
5045 * might lead one to believe they do. All 1xx (informational), 204
5046 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5047 * message-body. All other responses do include a message-body,
5048 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5049 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5050 * 1. Any response which "MUST NOT" include a message-body (such as the
5051 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5052 * always terminated by the first empty line after the header fields,
5053 * regardless of the entity-header fields present in the message.
5054 *
5055 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5056 * the "chunked" transfer-coding (Section 6.2) is used, the
5057 * transfer-length is defined by the use of this transfer-coding.
5058 * If a Transfer-Encoding header field is present and the "chunked"
5059 * transfer-coding is not present, the transfer-length is defined by
5060 * the sender closing the connection.
5061 *
5062 * 3. If a Content-Length header field is present, its decimal value in
5063 * OCTETs represents both the entity-length and the transfer-length.
5064 * If a message is received with both a Transfer-Encoding header
5065 * field and a Content-Length header field, the latter MUST be ignored.
5066 *
5067 * 4. If the message uses the media type "multipart/byteranges", and
5068 * the transfer-length is not otherwise specified, then this self-
5069 * delimiting media type defines the transfer-length. This media
5070 * type MUST NOT be used unless the sender knows that the recipient
5071 * can parse it; the presence in a request of a Range header with
5072 * multiple byte-range specifiers from a 1.1 client implies that the
5073 * client can parse multipart/byteranges responses.
5074 *
5075 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5076 */
5077
5078 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5079 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5080 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5081 * FIXME: should we parse anyway and return an error on chunked encoding ?
5082 */
5083 if (txn->meth == HTTP_METH_HEAD ||
5084 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5085 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5086 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5087 goto skip_content_length;
5088 }
5089
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5090 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5091 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5092 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5093 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5094 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5095 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5096 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5097 /* bad transfer-encoding (chunked followed by something else) */
5098 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5099 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5100 break;
5101 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5102 }
5103
5104 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5105 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5106 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5107 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5108 signed long long cl;
5109
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5110 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5111 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5112 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5113 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5114
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5115 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5116 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5117 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5118 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5119
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5120 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5121 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5122 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5123 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5124
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5125 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5126 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5127 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5128 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5129
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5130 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5131 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5132 }
5133
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5134 if (s->fe->comp || s->be->comp)
5135 select_compression_response_header(s, rep->buf);
5136
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5137 /* FIXME: we should also implement the multipart/byterange method.
5138 * For now on, we resort to close mode in this case (unknown length).
5139 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5140skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5141
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5142 /* end of job, return OK */
5143 rep->analysers &= ~an_bit;
5144 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5145 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5146 return 1;
5147}
5148
5149/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5150 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5151 * and updates t->rep->analysers. It might make sense to explode it into several
5152 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5153 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5154int 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]5155{
5156 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5157 struct http_msg *msg = &txn->rsp;
5158 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5159 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5160
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5161 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]5162 now_ms, __FUNCTION__,
5163 t,
5164 rep,
5165 rep->rex, rep->wex,
5166 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5167 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5168 rep->analysers);
5169
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5170 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5171 return 0;
5172
5173 rep->analysers &= ~an_bit;
5174 rep->analyse_exp = TICK_ETERNITY;
5175
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5176 /* Now we have to check if we need to modify the Connection header.
5177 * This is more difficult on the response than it is on the request,
5178 * because we can have two different HTTP versions and we don't know
5179 * how the client will interprete a response. For instance, let's say
5180 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5181 * HTTP/1.1 response without any header. Maybe it will bound itself to
5182 * HTTP/1.0 because it only knows about it, and will consider the lack
5183 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5184 * the lack of header as a keep-alive. Thus we will use two flags
5185 * indicating how a request MAY be understood by the client. In case
5186 * of multiple possibilities, we'll fix the header to be explicit. If
5187 * ambiguous cases such as both close and keepalive are seen, then we
5188 * will fall back to explicit close. Note that we won't take risks with
5189 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5190 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5191 */
5192
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5193 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5194 txn->status == 101)) {
5195 /* Either we've established an explicit tunnel, or we're
5196 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5197 * to understand the next protocols. We have to switch to tunnel
5198 * mode, so that we transfer the request and responses then let
5199 * this protocol pass unmodified. When we later implement specific
5200 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5201 * header which contains information about that protocol for
5202 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5203 */
5204 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5205 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5206 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5207 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5208 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5209 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5210
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5211 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5212 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5213 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5214 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5215
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5216 /* now adjust header transformations depending on current state */
5217 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5218 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5219 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5220 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5221 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5222 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5223 else { /* SCL / KAL */
5224 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5225 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5226 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5227 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5228
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5229 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5230 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5231
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5232 /* Some keep-alive responses are converted to Server-close if
5233 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5234 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5235 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5236 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5237 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5238 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5239 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5240 }
5241
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5242 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5243 /*
5244 * 3: we will have to evaluate the filters.
5245 * As opposed to version 1.2, now they will be evaluated in the
5246 * filters order and not in the header order. This means that
5247 * each filter has to be validated among all headers.
5248 *
5249 * Filters are tried with ->be first, then with ->fe if it is
5250 * different from ->be.
5251 */
5252
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5253 cur_proxy = t->be;
5254 while (1) {
5255 struct proxy *rule_set = cur_proxy;
5256
5257 /* try headers filters */
5258 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5259 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5260 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5261 if (objt_server(t->target)) {
5262 objt_server(t->target)->counters.failed_resp++;
5263 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5264 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5265 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5266 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5267 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5268 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5269 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5270 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5271 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5272 if (!(t->flags & SN_ERR_MASK))
5273 t->flags |= SN_ERR_PRXCOND;
5274 if (!(t->flags & SN_FINST_MASK))
5275 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5276 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5277 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5278 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5279
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5280 /* has the response been denied ? */
5281 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5282 if (objt_server(t->target))
5283 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5284
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5285 t->be->be_counters.denied_resp++;
5286 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5287 if (t->listener->counters)
5288 t->listener->counters->denied_resp++;
5289
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5290 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5291 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5292
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5293 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5294 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5295 if (txn->status < 200)
5296 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5297 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5298 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]5299 ret = acl_pass(ret);
5300 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5301 ret = !ret;
5302 if (!ret)
5303 continue;
5304 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5305 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5306 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5307 }
5308
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5309 /* check whether we're already working on the frontend */
5310 if (cur_proxy == t->fe)
5311 break;
5312 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5313 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5314
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5315 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5316 * We may be facing a 100-continue response, in which case this
5317 * is not the right response, and we're waiting for the next one.
5318 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5319 * next one.
5320 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5321 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5322 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5323 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5324 msg->msg_state = HTTP_MSG_RPBEFORE;
5325 txn->status = 0;
5326 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5327 return 1;
5328 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5329 else if (unlikely(txn->status < 200))
5330 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5331
5332 /* we don't have any 1xx status code now */
5333
5334 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5335 * 4: check for server cookie.
5336 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5337 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5338 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5339 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5340
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5341
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5342 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5343 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5344 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5345 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]5346 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5347
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5348 /*
5349 * 6: add server cookie in the response if needed
5350 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5351 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5352 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5353 (!(t->flags & SN_DIRECT) ||
5354 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5355 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5356 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5357 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5358 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5359 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5360 /* the server is known, it's not the one the client requested, or the
5361 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5362 * insert a set-cookie here, except if we want to insert only on POST
5363 * requests and this one isn't. Note that servers which don't have cookies
5364 * (eg: some backup servers) will return a full cookie removal request.
5365 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5366 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5367 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5368 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5369 t->be->cookie_name);
5370 }
5371 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5372 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]5373
5374 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5375 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5376 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5377 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5378 trash.len += 5;
5379
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5380 if (t->be->cookie_maxlife) {
5381 /* emit first_date, which is either the original one or
5382 * the current date.
5383 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5384 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5385 s30tob64(txn->cookie_first_date ?
5386 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5387 (date.tv_sec+3) >> 2, trash.str + trash.len);
5388 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5389 }
5390 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5391 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5392 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5393
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5394 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5395 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5396
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5397 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5398 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5399
5400 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5401 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5402
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5403 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]5404 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5405
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5406 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5407 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5408 /* the server did not change, only the date was updated */
5409 txn->flags |= TX_SCK_UPDATED;
5410 else
5411 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5412
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5413 /* Here, we will tell an eventual cache on the client side that we don't
5414 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5415 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5416 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5417 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5418 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5419
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5420 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5421
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5422 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5423 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5424 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5425 }
5426 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5427
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5428 /*
5429 * 7: check if result will be cacheable with a cookie.
5430 * We'll block the response if security checks have caught
5431 * nasty things such as a cacheable cookie.
5432 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5433 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5434 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5435 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5436
5437 /* we're in presence of a cacheable response containing
5438 * a set-cookie header. We'll block it as requested by
5439 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5440 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5441 if (objt_server(t->target))
5442 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5443
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5444 t->be->be_counters.denied_resp++;
5445 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5446 if (t->listener->counters)
5447 t->listener->counters->denied_resp++;
5448
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5449 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5450 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5451 send_log(t->be, LOG_ALERT,
5452 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5453 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5454 goto return_srv_prx_502;
5455 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5456
5457 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5458 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5459 * If an "Upgrade" token is found, the header is left untouched in order
5460 * not to have to deal with some client bugs : some of them fail an upgrade
5461 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5462 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5463 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5464 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5465 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5466 unsigned int want_flags = 0;
5467
5468 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5469 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5470 /* we want a keep-alive response here. Keep-alive header
5471 * required if either side is not 1.1.
5472 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5473 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5474 want_flags |= TX_CON_KAL_SET;
5475 }
5476 else {
5477 /* we want a close response here. Close header required if
5478 * the server is 1.1, regardless of the client.
5479 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5480 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5481 want_flags |= TX_CON_CLO_SET;
5482 }
5483
5484 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5485 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5486 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5487
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5488 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5489 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5490 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5491 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5492
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5493 /*************************************************************
5494 * OK, that's finished for the headers. We have done what we *
5495 * could. Let's switch to the DATA state. *
5496 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5497
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5498 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5499
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5500 /* if the user wants to log as soon as possible, without counting
5501 * bytes from the server, then this is the right moment. We have
5502 * to temporarily assign bytes_out to log what we currently have.
5503 */
5504 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5505 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5506 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5507 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5508 t->logs.bytes_out = 0;
5509 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5510
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5511 /* Note: we must not try to cheat by jumping directly to DATA,
5512 * otherwise we would not let the client side wake up.
5513 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5514
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5515 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5516 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5517 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5518}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5519
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5520/* This function is an analyser which forwards response body (including chunk
5521 * sizes if any). It is called as soon as we must forward, even if we forward
5522 * zero byte. The only situation where it must not be called is when we're in
5523 * tunnel mode and we want to forward till the close. It's used both to forward
5524 * remaining data and to resync after end of body. It expects the msg_state to
5525 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5526 * 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]5527 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5528 * bytes of pending data + the headers if not already done (between sol and sov).
5529 * 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]5530 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5531int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5532{
5533 struct http_txn *txn = &s->txn;
5534 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5535 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5536 static struct buffer *tmpbuf = NULL;
5537 int compressing = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5538
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5539 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5540 return 0;
5541
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5542 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]5543 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5544 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5545 /* Output closed while we were sending data. We must abort and
5546 * wake the other side up.
5547 */
5548 msg->msg_state = HTTP_MSG_ERROR;
5549 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5550 return 1;
5551 }
5552
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5553 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5554 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5555
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5556 /* this is the first time we need the compression buffer */
5557 if (s->comp_algo != NULL && tmpbuf == NULL) {
5558 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5559 goto aborted_xfer; /* no memory */
5560 }
5561
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5562 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5563 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5564 * rep->buf.p still points to the beginning of the message and msg->sol
5565 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5566 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5567 channel_forward(res, msg->sov);
5568 msg->next = 0;
5569 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5570
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5571 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5572 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5573 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5574 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5575 }
5576
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5577 if (s->comp_algo != NULL) {
5578 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5579 if (ret < 0)
5580 goto missing_data; /* not enough spaces in buffers */
5581 compressing = 1;
5582 }
5583
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5584 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5585 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5586 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5587 if (s->comp_algo == NULL) {
5588 bytes = msg->sov - msg->sol;
5589 if (msg->chunk_len || bytes) {
5590 msg->sol = msg->sov;
5591 msg->next -= bytes; /* will be forwarded */
5592 msg->chunk_len += bytes;
5593 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5594 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5595 }
5596
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5597 if (msg->msg_state == HTTP_MSG_DATA) {
5598 /* must still forward */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5599 if (compressing)
5600 http_compression_buffer_add_data(s, res->buf, tmpbuf);
5601
5602 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5603 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5604
5605 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5606 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5607 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5608 else
5609 msg->msg_state = HTTP_MSG_DONE;
5610 }
5611 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5612 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5613 * set ->sov and ->next to point to the body and switch to DATA or
5614 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5615 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5616 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5617
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5618 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5619 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5620 else if (ret < 0) {
5621 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5622 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]5623 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5624 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5625 /* skipping data if we are in compression mode */
5626 if (compressing && msg->chunk_len > 0) {
5627 b_adv(res->buf, msg->next);
5628 msg->next = 0;
5629 msg->sov = 0;
5630 msg->sol = 0;
5631 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5632 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5633 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5634 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5635 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5636 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5637
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5638 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5639 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5640 else if (ret < 0) {
5641 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5642 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]5643 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5644 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5645 /* skipping data in buffer for compression */
5646 if (compressing) {
5647 b_adv(res->buf, msg->next);
5648 msg->next = 0;
5649 msg->sov = 0;
5650 msg->sol = 0;
5651 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5652 /* we're in MSG_CHUNK_SIZE now */
5653 }
5654 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5655 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5656
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5657 if (ret == 0)
5658 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5659 else if (ret < 0) {
5660 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5661 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]5662 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5663 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5664 if (compressing) {
5665 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5666 compressing = 0;
5667 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5668 /* we're in HTTP_MSG_DONE now */
5669 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5670 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5671 int old_state = msg->msg_state;
5672
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5673 if (compressing) {
5674 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5675 compressing = 0;
5676 }
5677
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5678 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5679 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5680 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5681 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5682 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5683 if (http_resync_states(s)) {
5684 http_silent_debug(__LINE__, s);
5685 /* some state changes occurred, maybe the analyser
5686 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5687 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5688 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5689 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5690 /* response errors are most likely due to
5691 * the client aborting the transfer.
5692 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5693 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5694 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5695 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5696 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5697 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5698 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5699 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5700 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5701 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5702 }
5703 }
5704
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5705 missing_data:
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5706 if (compressing) {
5707 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5708 compressing = 0;
5709 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5710 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5711 if (res->flags & CF_SHUTR) {
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5712 if (!(s->flags & SN_ERR_MASK))
5713 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5714 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5715 if (objt_server(s->target))
5716 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5717 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5718 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5719
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5720 if (res->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5721 goto aborted_xfer;
5722
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5723 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5724 if (!s->req->analysers)
5725 goto return_bad_res;
5726
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5727 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5728 if (s->comp_algo == NULL) {
5729 bytes = msg->sov - msg->sol;
5730 if (msg->chunk_len || bytes) {
5731 msg->sol = msg->sov;
5732 msg->next -= bytes; /* will be forwarded */
5733 msg->chunk_len += bytes;
5734 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5735 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5736 }
5737
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5738 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5739 * 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]5740 * Similarly, with keep-alive on the client side, we don't want to forward a
5741 * close.
5742 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5743 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5744 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5745 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5746 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5747
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5748 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5749 * 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]5750 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5751 * modes are already handled by the stream sock layer. We must not do
5752 * this in content-length mode because it could present the MSG_MORE
5753 * flag with the last block of forwarded data, which would cause an
5754 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5755 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5756 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5757 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5758
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5759 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5760 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5761 return 0;
5762
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5763 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5764 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5765 if (objt_server(s->target))
5766 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5767
5768 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5769 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5770 /* don't send any error message as we're in the body */
5771 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5772 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5773 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]5774 if (objt_server(s->target))
5775 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5776
5777 if (!(s->flags & SN_ERR_MASK))
5778 s->flags |= SN_ERR_PRXCOND;
5779 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5780 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5781 return 0;
5782
5783 aborted_xfer:
5784 txn->rsp.msg_state = HTTP_MSG_ERROR;
5785 /* don't send any error message as we're in the body */
5786 stream_int_retnclose(res->cons, NULL);
5787 res->analysers = 0;
5788 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5789
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5790 s->fe->fe_counters.cli_aborts++;
5791 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5792 if (objt_server(s->target))
5793 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5794
5795 if (!(s->flags & SN_ERR_MASK))
5796 s->flags |= SN_ERR_CLICL;
5797 if (!(s->flags & SN_FINST_MASK))
5798 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5799 return 0;
5800}
5801
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5802/* Iterate the same filter through all request headers.
5803 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5804 * Since it can manage the switch to another backend, it updates the per-proxy
5805 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5806 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5807int 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]5808{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5809 char term;
5810 char *cur_ptr, *cur_end, *cur_next;
5811 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5812 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5813 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5814 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5815
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5816 last_hdr = 0;
5817
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5818 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5819 old_idx = 0;
5820
5821 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5822 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5823 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5824 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5825 (exp->action == ACT_ALLOW ||
5826 exp->action == ACT_DENY ||
5827 exp->action == ACT_TARPIT))
5828 return 0;
5829
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5830 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5831 if (!cur_idx)
5832 break;
5833
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5834 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5835 cur_ptr = cur_next;
5836 cur_end = cur_ptr + cur_hdr->len;
5837 cur_next = cur_end + cur_hdr->cr + 1;
5838
5839 /* Now we have one header between cur_ptr and cur_end,
5840 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5841 */
5842
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5843 /* The annoying part is that pattern matching needs
5844 * that we modify the contents to null-terminate all
5845 * strings before testing them.
5846 */
5847
5848 term = *cur_end;
5849 *cur_end = '\0';
5850
5851 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5852 switch (exp->action) {
5853 case ACT_SETBE:
5854 /* It is not possible to jump a second time.
5855 * FIXME: should we return an HTTP/500 here so that
5856 * the admin knows there's a problem ?
5857 */
5858 if (t->be != t->fe)
5859 break;
5860
5861 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5862 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5863 last_hdr = 1;
5864 break;
5865
5866 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5867 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5868 last_hdr = 1;
5869 break;
5870
5871 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5872 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5873 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5874
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5875 t->fe->fe_counters.denied_req++;
5876 if (t->fe != t->be)
5877 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5878 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5879 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5880
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5881 break;
5882
5883 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5884 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5885 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5886
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5887 t->fe->fe_counters.denied_req++;
5888 if (t->fe != t->be)
5889 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5890 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5891 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5892
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5893 break;
5894
5895 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5896 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
5897 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5898 /* FIXME: if the user adds a newline in the replacement, the
5899 * index will not be recalculated for now, and the new line
5900 * will not be counted as a new header.
5901 */
5902
5903 cur_end += delta;
5904 cur_next += delta;
5905 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5906 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5907 break;
5908
5909 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5910 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5911 cur_next += delta;
5912
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5913 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5914 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5915 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5916 cur_hdr->len = 0;
5917 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5918 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5919 break;
5920
5921 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5922 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5923 if (cur_end)
5924 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5925
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5926 /* keep the link from this header to next one in case of later
5927 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5928 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5929 old_idx = cur_idx;
5930 }
5931 return 0;
5932}
5933
5934
5935/* Apply the filter to the request line.
5936 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5937 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5938 * Since it can manage the switch to another backend, it updates the per-proxy
5939 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5940 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5941int 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]5942{
5943 char term;
5944 char *cur_ptr, *cur_end;
5945 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5946 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5947 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5948
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5949 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5950 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5951 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5952 (exp->action == ACT_ALLOW ||
5953 exp->action == ACT_DENY ||
5954 exp->action == ACT_TARPIT))
5955 return 0;
5956 else if (exp->action == ACT_REMOVE)
5957 return 0;
5958
5959 done = 0;
5960
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5961 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5962 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5963
5964 /* Now we have the request line between cur_ptr and cur_end */
5965
5966 /* The annoying part is that pattern matching needs
5967 * that we modify the contents to null-terminate all
5968 * strings before testing them.
5969 */
5970
5971 term = *cur_end;
5972 *cur_end = '\0';
5973
5974 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5975 switch (exp->action) {
5976 case ACT_SETBE:
5977 /* It is not possible to jump a second time.
5978 * FIXME: should we return an HTTP/500 here so that
5979 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5980 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5981 if (t->be != t->fe)
5982 break;
5983
5984 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5985 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5986 done = 1;
5987 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5988
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5989 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5990 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5991 done = 1;
5992 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5993
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5994 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5995 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5996
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5997 t->fe->fe_counters.denied_req++;
5998 if (t->fe != t->be)
5999 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6000 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6001 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6002
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6003 done = 1;
6004 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6005
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6006 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6007 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6008
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6009 t->fe->fe_counters.denied_req++;
6010 if (t->fe != t->be)
6011 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6012 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6013 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6014
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6015 done = 1;
6016 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6017
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6018 case ACT_REPLACE:
6019 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6020 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6021 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6022 /* FIXME: if the user adds a newline in the replacement, the
6023 * index will not be recalculated for now, and the new line
6024 * will not be counted as a new header.
6025 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6026
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6027 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6028 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6029 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6030 HTTP_MSG_RQMETH,
6031 cur_ptr, cur_end + 1,
6032 NULL, NULL);
6033 if (unlikely(!cur_end))
6034 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6035
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6036 /* we have a full request and we know that we have either a CR
6037 * or an LF at <ptr>.
6038 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6039 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6040 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]6041 /* there is no point trying this regex on headers */
6042 return 1;
6043 }
6044 }
6045 *cur_end = term; /* restore the string terminator */
6046 return done;
6047}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6048
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6049
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6050
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6051/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6052 * 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]6053 * 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]6054 * unparsable request. Since it can manage the switch to another backend, it
6055 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6056 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6057int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6058{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6059 struct http_txn *txn = &s->txn;
6060 struct hdr_exp *exp;
6061
6062 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6063 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6064
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6065 /*
6066 * The interleaving of transformations and verdicts
6067 * makes it difficult to decide to continue or stop
6068 * the evaluation.
6069 */
6070
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6071 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6072 break;
6073
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6074 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6075 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6076 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6077 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6078
6079 /* if this filter had a condition, evaluate it now and skip to
6080 * next filter if the condition does not match.
6081 */
6082 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6083 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]6084 ret = acl_pass(ret);
6085 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6086 ret = !ret;
6087
6088 if (!ret)
6089 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6090 }
6091
6092 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6093 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6094 if (unlikely(ret < 0))
6095 return -1;
6096
6097 if (likely(ret == 0)) {
6098 /* The filter did not match the request, it can be
6099 * iterated through all headers.
6100 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6101 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6102 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6103 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6104 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6105}
6106
6107
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6108
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6109/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6110 * Try to retrieve the server associated to the appsession.
6111 * If the server is found, it's assigned to the session.
6112 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6113void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6114 struct http_txn *txn = &t->txn;
6115 appsess *asession = NULL;
6116 char *sessid_temp = NULL;
6117
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6118 if (len > t->be->appsession_len) {
6119 len = t->be->appsession_len;
6120 }
6121
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6122 if (t->be->options2 & PR_O2_AS_REQL) {
6123 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6124 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6125 /* 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]6126 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6127 }
6128
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6129 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6130 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6131 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6132 return;
6133 }
6134
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6135 memcpy(txn->sessid, buf, len);
6136 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6137 }
6138
6139 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6140 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6141 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6142 return;
6143 }
6144
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6145 memcpy(sessid_temp, buf, len);
6146 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6147
6148 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6149 /* free previously allocated memory */
6150 pool_free2(apools.sessid, sessid_temp);
6151
6152 if (asession != NULL) {
6153 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6154 if (!(t->be->options2 & PR_O2_AS_REQL))
6155 asession->request_count++;
6156
6157 if (asession->serverid != NULL) {
6158 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6159
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6160 while (srv) {
6161 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6162 if ((srv->state & SRV_RUNNING) ||
6163 (t->be->options & PR_O_PERSIST) ||
6164 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6165 /* we found the server and it's usable */
6166 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6167 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6168 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6169 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6170
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6171 break;
6172 } else {
6173 txn->flags &= ~TX_CK_MASK;
6174 txn->flags |= TX_CK_DOWN;
6175 }
6176 }
6177 srv = srv->next;
6178 }
6179 }
6180 }
6181}
6182
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6183/* Find the end of a cookie value contained between <s> and <e>. It works the
6184 * same way as with headers above except that the semi-colon also ends a token.
6185 * See RFC2965 for more information. Note that it requires a valid header to
6186 * return a valid result.
6187 */
6188char *find_cookie_value_end(char *s, const char *e)
6189{
6190 int quoted, qdpair;
6191
6192 quoted = qdpair = 0;
6193 for (; s < e; s++) {
6194 if (qdpair) qdpair = 0;
6195 else if (quoted) {
6196 if (*s == '\\') qdpair = 1;
6197 else if (*s == '"') quoted = 0;
6198 }
6199 else if (*s == '"') quoted = 1;
6200 else if (*s == ',' || *s == ';') return s;
6201 }
6202 return s;
6203}
6204
6205/* Delete a value in a header between delimiters <from> and <next> in buffer
6206 * <buf>. The number of characters displaced is returned, and the pointer to
6207 * the first delimiter is updated if required. The function tries as much as
6208 * possible to respect the following principles :
6209 * - replace <from> delimiter by the <next> one unless <from> points to a
6210 * colon, in which case <next> is simply removed
6211 * - set exactly one space character after the new first delimiter, unless
6212 * there are not enough characters in the block being moved to do so.
6213 * - remove unneeded spaces before the previous delimiter and after the new
6214 * one.
6215 *
6216 * It is the caller's responsibility to ensure that :
6217 * - <from> points to a valid delimiter or the colon ;
6218 * - <next> points to a valid delimiter or the final CR/LF ;
6219 * - there are non-space chars before <from> ;
6220 * - there is a CR/LF at or after <next>.
6221 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6222int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6223{
6224 char *prev = *from;
6225
6226 if (*prev == ':') {
6227 /* We're removing the first value, preserve the colon and add a
6228 * space if possible.
6229 */
6230 if (!http_is_crlf[(unsigned char)*next])
6231 next++;
6232 prev++;
6233 if (prev < next)
6234 *prev++ = ' ';
6235
6236 while (http_is_spht[(unsigned char)*next])
6237 next++;
6238 } else {
6239 /* Remove useless spaces before the old delimiter. */
6240 while (http_is_spht[(unsigned char)*(prev-1)])
6241 prev--;
6242 *from = prev;
6243
6244 /* copy the delimiter and if possible a space if we're
6245 * not at the end of the line.
6246 */
6247 if (!http_is_crlf[(unsigned char)*next]) {
6248 *prev++ = *next++;
6249 if (prev + 1 < next)
6250 *prev++ = ' ';
6251 while (http_is_spht[(unsigned char)*next])
6252 next++;
6253 }
6254 }
6255 return buffer_replace2(buf, prev, next, NULL, 0);
6256}
6257
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6258/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6259 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6260 * desirable to call it only when needed. This code is quite complex because
6261 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6262 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6263 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6264void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6265{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6266 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6267 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6268 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6269 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6270 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6271
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6272 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6273 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6274 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6275
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6276 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6277 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6278 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6279
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6280 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6281 hdr_beg = hdr_next;
6282 hdr_end = hdr_beg + cur_hdr->len;
6283 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6284
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6285 /* We have one full header between hdr_beg and hdr_end, and the
6286 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6287 * "Cookie:" headers.
6288 */
6289
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6290 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6291 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6292 old_idx = cur_idx;
6293 continue;
6294 }
6295
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6296 del_from = NULL; /* nothing to be deleted */
6297 preserve_hdr = 0; /* assume we may kill the whole header */
6298
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6299 /* Now look for cookies. Conforming to RFC2109, we have to support
6300 * attributes whose name begin with a '$', and associate them with
6301 * the right cookie, if we want to delete this cookie.
6302 * So there are 3 cases for each cookie read :
6303 * 1) it's a special attribute, beginning with a '$' : ignore it.
6304 * 2) it's a server id cookie that we *MAY* want to delete : save
6305 * some pointers on it (last semi-colon, beginning of cookie...)
6306 * 3) it's an application cookie : we *MAY* have to delete a previous
6307 * "special" cookie.
6308 * At the end of loop, if a "special" cookie remains, we may have to
6309 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6310 * *MUST* delete it.
6311 *
6312 * Note: RFC2965 is unclear about the processing of spaces around
6313 * the equal sign in the ATTR=VALUE form. A careful inspection of
6314 * the RFC explicitly allows spaces before it, and not within the
6315 * tokens (attrs or values). An inspection of RFC2109 allows that
6316 * too but section 10.1.3 lets one think that spaces may be allowed
6317 * after the equal sign too, resulting in some (rare) buggy
6318 * implementations trying to do that. So let's do what servers do.
6319 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6320 * allowed quoted strings in values, with any possible character
6321 * after a backslash, including control chars and delimitors, which
6322 * causes parsing to become ambiguous. Browsers also allow spaces
6323 * within values even without quotes.
6324 *
6325 * We have to keep multiple pointers in order to support cookie
6326 * removal at the beginning, middle or end of header without
6327 * corrupting the header. All of these headers are valid :
6328 *
6329 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6330 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6331 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6332 * | | | | | | | | |
6333 * | | | | | | | | hdr_end <--+
6334 * | | | | | | | +--> next
6335 * | | | | | | +----> val_end
6336 * | | | | | +-----------> val_beg
6337 * | | | | +--------------> equal
6338 * | | | +----------------> att_end
6339 * | | +---------------------> att_beg
6340 * | +--------------------------> prev
6341 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6342 */
6343
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6344 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6345 /* Iterate through all cookies on this line */
6346
6347 /* find att_beg */
6348 att_beg = prev + 1;
6349 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6350 att_beg++;
6351
6352 /* find att_end : this is the first character after the last non
6353 * space before the equal. It may be equal to hdr_end.
6354 */
6355 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6356
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6357 while (equal < hdr_end) {
6358 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6359 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6360 if (http_is_spht[(unsigned char)*equal++])
6361 continue;
6362 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6363 }
6364
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6365 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6366 * is between <att_beg> and <equal>, both may be identical.
6367 */
6368
6369 /* look for end of cookie if there is an equal sign */
6370 if (equal < hdr_end && *equal == '=') {
6371 /* look for the beginning of the value */
6372 val_beg = equal + 1;
6373 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6374 val_beg++;
6375
6376 /* find the end of the value, respecting quotes */
6377 next = find_cookie_value_end(val_beg, hdr_end);
6378
6379 /* make val_end point to the first white space or delimitor after the value */
6380 val_end = next;
6381 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6382 val_end--;
6383 } else {
6384 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6385 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6386
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6387 /* We have nothing to do with attributes beginning with '$'. However,
6388 * they will automatically be removed if a header before them is removed,
6389 * since they're supposed to be linked together.
6390 */
6391 if (*att_beg == '$')
6392 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6393
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6394 /* Ignore cookies with no equal sign */
6395 if (equal == next) {
6396 /* This is not our cookie, so we must preserve it. But if we already
6397 * scheduled another cookie for removal, we cannot remove the
6398 * complete header, but we can remove the previous block itself.
6399 */
6400 preserve_hdr = 1;
6401 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6402 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6403 val_end += delta;
6404 next += delta;
6405 hdr_end += delta;
6406 hdr_next += delta;
6407 cur_hdr->len += delta;
6408 http_msg_move_end(&txn->req, delta);
6409 prev = del_from;
6410 del_from = NULL;
6411 }
6412 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6413 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6414
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6415 /* if there are spaces around the equal sign, we need to
6416 * strip them otherwise we'll get trouble for cookie captures,
6417 * or even for rewrites. Since this happens extremely rarely,
6418 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6419 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6420 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6421 int stripped_before = 0;
6422 int stripped_after = 0;
6423
6424 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6425 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6426 equal += stripped_before;
6427 val_beg += stripped_before;
6428 }
6429
6430 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6431 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6432 val_beg += stripped_after;
6433 stripped_before += stripped_after;
6434 }
6435
6436 val_end += stripped_before;
6437 next += stripped_before;
6438 hdr_end += stripped_before;
6439 hdr_next += stripped_before;
6440 cur_hdr->len += stripped_before;
6441 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6442 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6443 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6444
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6445 /* First, let's see if we want to capture this cookie. We check
6446 * that we don't already have a client side cookie, because we
6447 * can only capture one. Also as an optimisation, we ignore
6448 * cookies shorter than the declared name.
6449 */
6450 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6451 (val_end - att_beg >= t->fe->capture_namelen) &&
6452 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6453 int log_len = val_end - att_beg;
6454
6455 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6456 Alert("HTTP logging : out of memory.\n");
6457 } else {
6458 if (log_len > t->fe->capture_len)
6459 log_len = t->fe->capture_len;
6460 memcpy(txn->cli_cookie, att_beg, log_len);
6461 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6462 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6463 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6464
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6465 /* Persistence cookies in passive, rewrite or insert mode have the
6466 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6467 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6468 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6469 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6470 * For cookies in prefix mode, the form is :
6471 *
6472 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6473 */
6474 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6475 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6476 struct server *srv = t->be->srv;
6477 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6478
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6479 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6480 * have the server ID between val_beg and delim, and the original cookie between
6481 * delim+1 and val_end. Otherwise, delim==val_end :
6482 *
6483 * Cookie: NAME=SRV; # in all but prefix modes
6484 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6485 * | || || | |+-> next
6486 * | || || | +--> val_end
6487 * | || || +---------> delim
6488 * | || |+------------> val_beg
6489 * | || +-------------> att_end = equal
6490 * | |+-----------------> att_beg
6491 * | +------------------> prev
6492 * +-------------------------> hdr_beg
6493 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6494
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6495 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6496 for (delim = val_beg; delim < val_end; delim++)
6497 if (*delim == COOKIE_DELIM)
6498 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6499 } else {
6500 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6501 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6502 /* Now check if the cookie contains a date field, which would
6503 * appear after a vertical bar ('|') just after the server name
6504 * and before the delimiter.
6505 */
6506 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6507 if (vbar1) {
6508 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6509 * right is the last seen date. It is a base64 encoded
6510 * 30-bit value representing the UNIX date since the
6511 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6512 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6513 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6514 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6515 if (val_end - vbar1 >= 5) {
6516 val = b64tos30(vbar1);
6517 if (val > 0)
6518 txn->cookie_last_date = val << 2;
6519 }
6520 /* look for a second vertical bar */
6521 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6522 if (vbar1 && (val_end - vbar1 > 5)) {
6523 val = b64tos30(vbar1 + 1);
6524 if (val > 0)
6525 txn->cookie_first_date = val << 2;
6526 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6527 }
6528 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6529
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6530 /* if the cookie has an expiration date and the proxy wants to check
6531 * it, then we do that now. We first check if the cookie is too old,
6532 * then only if it has expired. We detect strict overflow because the
6533 * time resolution here is not great (4 seconds). Cookies with dates
6534 * in the future are ignored if their offset is beyond one day. This
6535 * allows an admin to fix timezone issues without expiring everyone
6536 * and at the same time avoids keeping unwanted side effects for too
6537 * long.
6538 */
6539 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6540 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6541 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6542 txn->flags &= ~TX_CK_MASK;
6543 txn->flags |= TX_CK_OLD;
6544 delim = val_beg; // let's pretend we have not found the cookie
6545 txn->cookie_first_date = 0;
6546 txn->cookie_last_date = 0;
6547 }
6548 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6549 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6550 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6551 txn->flags &= ~TX_CK_MASK;
6552 txn->flags |= TX_CK_EXPIRED;
6553 delim = val_beg; // let's pretend we have not found the cookie
6554 txn->cookie_first_date = 0;
6555 txn->cookie_last_date = 0;
6556 }
6557
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6558 /* Here, we'll look for the first running server which supports the cookie.
6559 * This allows to share a same cookie between several servers, for example
6560 * to dedicate backup servers to specific servers only.
6561 * However, to prevent clients from sticking to cookie-less backup server
6562 * when they have incidentely learned an empty cookie, we simply ignore
6563 * empty cookies and mark them as invalid.
6564 * The same behaviour is applied when persistence must be ignored.
6565 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6566 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6567 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6568
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6569 while (srv) {
6570 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6571 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6572 if ((srv->state & SRV_RUNNING) ||
6573 (t->be->options & PR_O_PERSIST) ||
6574 (t->flags & SN_FORCE_PRST)) {
6575 /* we found the server and we can use it */
6576 txn->flags &= ~TX_CK_MASK;
6577 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6578 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6579 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6580 break;
6581 } else {
6582 /* we found a server, but it's down,
6583 * mark it as such and go on in case
6584 * another one is available.
6585 */
6586 txn->flags &= ~TX_CK_MASK;
6587 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6588 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6589 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6590 srv = srv->next;
6591 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6592
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6593 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6594 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6595 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6596 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6597 txn->flags |= TX_CK_UNUSED;
6598 else
6599 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6600 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6601
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6602 /* depending on the cookie mode, we may have to either :
6603 * - delete the complete cookie if we're in insert+indirect mode, so that
6604 * the server never sees it ;
6605 * - remove the server id from the cookie value, and tag the cookie as an
6606 * application cookie so that it does not get accidentely removed later,
6607 * if we're in cookie prefix mode
6608 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6609 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6610 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6611
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6612 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6613 val_end += delta;
6614 next += delta;
6615 hdr_end += delta;
6616 hdr_next += delta;
6617 cur_hdr->len += delta;
6618 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6619
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6620 del_from = NULL;
6621 preserve_hdr = 1; /* we want to keep this cookie */
6622 }
6623 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6624 (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]6625 del_from = prev;
6626 }
6627 } else {
6628 /* This is not our cookie, so we must preserve it. But if we already
6629 * scheduled another cookie for removal, we cannot remove the
6630 * complete header, but we can remove the previous block itself.
6631 */
6632 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6633
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6634 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6635 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6636 if (att_beg >= del_from)
6637 att_beg += delta;
6638 if (att_end >= del_from)
6639 att_end += delta;
6640 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6641 val_end += delta;
6642 next += delta;
6643 hdr_end += delta;
6644 hdr_next += delta;
6645 cur_hdr->len += delta;
6646 http_msg_move_end(&txn->req, delta);
6647 prev = del_from;
6648 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6649 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6650 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6651
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6652 /* Look for the appsession cookie unless persistence must be ignored */
6653 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6654 int cmp_len, value_len;
6655 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6656
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6657 if (t->be->options2 & PR_O2_AS_PFX) {
6658 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6659 value_begin = att_beg + t->be->appsession_name_len;
6660 value_len = val_end - att_beg - t->be->appsession_name_len;
6661 } else {
6662 cmp_len = att_end - att_beg;
6663 value_begin = val_beg;
6664 value_len = val_end - val_beg;
6665 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6666
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6667 /* let's see if the cookie is our appcookie */
6668 if (cmp_len == t->be->appsession_name_len &&
6669 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6670 manage_client_side_appsession(t, value_begin, value_len);
6671 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6672 }
6673
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6674 /* continue with next cookie on this header line */
6675 att_beg = next;
6676 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6677
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6678 /* There are no more cookies on this line.
6679 * We may still have one (or several) marked for deletion at the
6680 * end of the line. We must do this now in two ways :
6681 * - if some cookies must be preserved, we only delete from the
6682 * mark to the end of line ;
6683 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6684 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6685 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6686 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6687 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6688 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6689 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6690 cur_hdr->len += delta;
6691 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6692 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6693
6694 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6695 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6696 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6697 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6698 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6699 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6700 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6701 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6702 }
6703
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6704 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6705 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6706 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6707}
6708
6709
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6710/* Iterate the same filter through all response headers contained in <rtr>.
6711 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6712 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6713int 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]6714{
6715 char term;
6716 char *cur_ptr, *cur_end, *cur_next;
6717 int cur_idx, old_idx, last_hdr;
6718 struct http_txn *txn = &t->txn;
6719 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6720 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6721
6722 last_hdr = 0;
6723
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6724 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6725 old_idx = 0;
6726
6727 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6728 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6729 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6730 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6731 (exp->action == ACT_ALLOW ||
6732 exp->action == ACT_DENY))
6733 return 0;
6734
6735 cur_idx = txn->hdr_idx.v[old_idx].next;
6736 if (!cur_idx)
6737 break;
6738
6739 cur_hdr = &txn->hdr_idx.v[cur_idx];
6740 cur_ptr = cur_next;
6741 cur_end = cur_ptr + cur_hdr->len;
6742 cur_next = cur_end + cur_hdr->cr + 1;
6743
6744 /* Now we have one header between cur_ptr and cur_end,
6745 * and the next header starts at cur_next.
6746 */
6747
6748 /* The annoying part is that pattern matching needs
6749 * that we modify the contents to null-terminate all
6750 * strings before testing them.
6751 */
6752
6753 term = *cur_end;
6754 *cur_end = '\0';
6755
6756 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6757 switch (exp->action) {
6758 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6759 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6760 last_hdr = 1;
6761 break;
6762
6763 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6764 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6765 last_hdr = 1;
6766 break;
6767
6768 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6769 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6770 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6771 /* FIXME: if the user adds a newline in the replacement, the
6772 * index will not be recalculated for now, and the new line
6773 * will not be counted as a new header.
6774 */
6775
6776 cur_end += delta;
6777 cur_next += delta;
6778 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6779 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6780 break;
6781
6782 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6783 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6784 cur_next += delta;
6785
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6786 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6787 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6788 txn->hdr_idx.used--;
6789 cur_hdr->len = 0;
6790 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6791 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6792 break;
6793
6794 }
6795 }
6796 if (cur_end)
6797 *cur_end = term; /* restore the string terminator */
6798
6799 /* keep the link from this header to next one in case of later
6800 * removal of next header.
6801 */
6802 old_idx = cur_idx;
6803 }
6804 return 0;
6805}
6806
6807
6808/* Apply the filter to the status line in the response buffer <rtr>.
6809 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6810 * or -1 if a replacement resulted in an invalid status line.
6811 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6812int 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]6813{
6814 char term;
6815 char *cur_ptr, *cur_end;
6816 int done;
6817 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6818 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6819
6820
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6821 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6822 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6823 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6824 (exp->action == ACT_ALLOW ||
6825 exp->action == ACT_DENY))
6826 return 0;
6827 else if (exp->action == ACT_REMOVE)
6828 return 0;
6829
6830 done = 0;
6831
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6832 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6833 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6834
6835 /* Now we have the status line between cur_ptr and cur_end */
6836
6837 /* The annoying part is that pattern matching needs
6838 * that we modify the contents to null-terminate all
6839 * strings before testing them.
6840 */
6841
6842 term = *cur_end;
6843 *cur_end = '\0';
6844
6845 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6846 switch (exp->action) {
6847 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6848 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6849 done = 1;
6850 break;
6851
6852 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6853 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6854 done = 1;
6855 break;
6856
6857 case ACT_REPLACE:
6858 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6859 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6860 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6861 /* FIXME: if the user adds a newline in the replacement, the
6862 * index will not be recalculated for now, and the new line
6863 * will not be counted as a new header.
6864 */
6865
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6866 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6867 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6868 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6869 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6870 cur_ptr, cur_end + 1,
6871 NULL, NULL);
6872 if (unlikely(!cur_end))
6873 return -1;
6874
6875 /* we have a full respnse and we know that we have either a CR
6876 * or an LF at <ptr>.
6877 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6878 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]6879 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]6880 /* there is no point trying this regex on headers */
6881 return 1;
6882 }
6883 }
6884 *cur_end = term; /* restore the string terminator */
6885 return done;
6886}
6887
6888
6889
6890/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6891 * 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]6892 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6893 * unparsable response.
6894 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6895int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6896{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6897 struct http_txn *txn = &s->txn;
6898 struct hdr_exp *exp;
6899
6900 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6901 int ret;
6902
6903 /*
6904 * The interleaving of transformations and verdicts
6905 * makes it difficult to decide to continue or stop
6906 * the evaluation.
6907 */
6908
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6909 if (txn->flags & TX_SVDENY)
6910 break;
6911
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6912 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6913 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6914 exp->action == ACT_PASS)) {
6915 exp = exp->next;
6916 continue;
6917 }
6918
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6919 /* if this filter had a condition, evaluate it now and skip to
6920 * next filter if the condition does not match.
6921 */
6922 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6923 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]6924 ret = acl_pass(ret);
6925 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6926 ret = !ret;
6927 if (!ret)
6928 continue;
6929 }
6930
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6931 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6932 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6933 if (unlikely(ret < 0))
6934 return -1;
6935
6936 if (likely(ret == 0)) {
6937 /* The filter did not match the response, it can be
6938 * iterated through all headers.
6939 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6940 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6941 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6942 }
6943 return 0;
6944}
6945
6946
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6947/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6948 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6949 * desirable to call it only when needed. This function is also used when we
6950 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6951 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6952void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6953{
6954 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6955 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6956 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6957 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6958 char *hdr_beg, *hdr_end, *hdr_next;
6959 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6960
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6961 /* Iterate through the headers.
6962 * we start with the start line.
6963 */
6964 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6965 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6966
6967 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6968 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6969 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6970
6971 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6972 hdr_beg = hdr_next;
6973 hdr_end = hdr_beg + cur_hdr->len;
6974 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6975
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6976 /* We have one full header between hdr_beg and hdr_end, and the
6977 * next header starts at hdr_next. We're only interested in
6978 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6979 */
6980
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6981 is_cookie2 = 0;
6982 prev = hdr_beg + 10;
6983 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6984 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6985 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6986 if (!val) {
6987 old_idx = cur_idx;
6988 continue;
6989 }
6990 is_cookie2 = 1;
6991 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6992 }
6993
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6994 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
6995 * <prev> points to the colon.
6996 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6997 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6998
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6999 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7000 * check-cache is enabled) and we are not interested in checking
7001 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7002 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7003 if (t->be->cookie_name == NULL &&
7004 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7005 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7006 return;
7007
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7008 /* OK so now we know we have to process this response cookie.
7009 * The format of the Set-Cookie header is slightly different
7010 * from the format of the Cookie header in that it does not
7011 * support the comma as a cookie delimiter (thus the header
7012 * cannot be folded) because the Expires attribute described in
7013 * the original Netscape's spec may contain an unquoted date
7014 * with a comma inside. We have to live with this because
7015 * many browsers don't support Max-Age and some browsers don't
7016 * support quoted strings. However the Set-Cookie2 header is
7017 * clean.
7018 *
7019 * We have to keep multiple pointers in order to support cookie
7020 * removal at the beginning, middle or end of header without
7021 * corrupting the header (in case of set-cookie2). A special
7022 * pointer, <scav> points to the beginning of the set-cookie-av
7023 * fields after the first semi-colon. The <next> pointer points
7024 * either to the end of line (set-cookie) or next unquoted comma
7025 * (set-cookie2). All of these headers are valid :
7026 *
7027 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7028 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7029 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7030 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7031 * | | | | | | | | | |
7032 * | | | | | | | | +-> next hdr_end <--+
7033 * | | | | | | | +------------> scav
7034 * | | | | | | +--------------> val_end
7035 * | | | | | +--------------------> val_beg
7036 * | | | | +----------------------> equal
7037 * | | | +------------------------> att_end
7038 * | | +----------------------------> att_beg
7039 * | +------------------------------> prev
7040 * +-----------------------------------------> hdr_beg
7041 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7042
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7043 for (; prev < hdr_end; prev = next) {
7044 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7045
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7046 /* find att_beg */
7047 att_beg = prev + 1;
7048 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7049 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7050
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7051 /* find att_end : this is the first character after the last non
7052 * space before the equal. It may be equal to hdr_end.
7053 */
7054 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7055
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7056 while (equal < hdr_end) {
7057 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7058 break;
7059 if (http_is_spht[(unsigned char)*equal++])
7060 continue;
7061 att_end = equal;
7062 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7063
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7064 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7065 * is between <att_beg> and <equal>, both may be identical.
7066 */
7067
7068 /* look for end of cookie if there is an equal sign */
7069 if (equal < hdr_end && *equal == '=') {
7070 /* look for the beginning of the value */
7071 val_beg = equal + 1;
7072 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7073 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7074
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7075 /* find the end of the value, respecting quotes */
7076 next = find_cookie_value_end(val_beg, hdr_end);
7077
7078 /* make val_end point to the first white space or delimitor after the value */
7079 val_end = next;
7080 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7081 val_end--;
7082 } else {
7083 /* <equal> points to next comma, semi-colon or EOL */
7084 val_beg = val_end = next = equal;
7085 }
7086
7087 if (next < hdr_end) {
7088 /* Set-Cookie2 supports multiple cookies, and <next> points to
7089 * a colon or semi-colon before the end. So skip all attr-value
7090 * pairs and look for the next comma. For Set-Cookie, since
7091 * commas are permitted in values, skip to the end.
7092 */
7093 if (is_cookie2)
7094 next = find_hdr_value_end(next, hdr_end);
7095 else
7096 next = hdr_end;
7097 }
7098
7099 /* Now everything is as on the diagram above */
7100
7101 /* Ignore cookies with no equal sign */
7102 if (equal == val_end)
7103 continue;
7104
7105 /* If there are spaces around the equal sign, we need to
7106 * strip them otherwise we'll get trouble for cookie captures,
7107 * or even for rewrites. Since this happens extremely rarely,
7108 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7109 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7110 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7111 int stripped_before = 0;
7112 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7113
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7114 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7115 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7116 equal += stripped_before;
7117 val_beg += stripped_before;
7118 }
7119
7120 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7121 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7122 val_beg += stripped_after;
7123 stripped_before += stripped_after;
7124 }
7125
7126 val_end += stripped_before;
7127 next += stripped_before;
7128 hdr_end += stripped_before;
7129 hdr_next += stripped_before;
7130 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7131 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7132 }
7133
7134 /* First, let's see if we want to capture this cookie. We check
7135 * that we don't already have a server side cookie, because we
7136 * can only capture one. Also as an optimisation, we ignore
7137 * cookies shorter than the declared name.
7138 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7139 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7140 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7141 (val_end - att_beg >= t->fe->capture_namelen) &&
7142 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7143 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7144 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7145 Alert("HTTP logging : out of memory.\n");
7146 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7147 else {
7148 if (log_len > t->fe->capture_len)
7149 log_len = t->fe->capture_len;
7150 memcpy(txn->srv_cookie, att_beg, log_len);
7151 txn->srv_cookie[log_len] = 0;
7152 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7153 }
7154
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7155 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7156 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7157 if (!(t->flags & SN_IGNORE_PRST) &&
7158 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7159 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7160 /* assume passive cookie by default */
7161 txn->flags &= ~TX_SCK_MASK;
7162 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7163
7164 /* If the cookie is in insert mode on a known server, we'll delete
7165 * this occurrence because we'll insert another one later.
7166 * 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]7167 * a direct access.
7168 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7169 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7170 /* The "preserve" flag was set, we don't want to touch the
7171 * server's cookie.
7172 */
7173 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7174 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7175 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7176 /* this cookie must be deleted */
7177 if (*prev == ':' && next == hdr_end) {
7178 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7179 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7180 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7181 txn->hdr_idx.used--;
7182 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7183 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7184 hdr_next += delta;
7185 http_msg_move_end(&txn->rsp, delta);
7186 /* note: while both invalid now, <next> and <hdr_end>
7187 * are still equal, so the for() will stop as expected.
7188 */
7189 } else {
7190 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7191 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7192 next = prev;
7193 hdr_end += delta;
7194 hdr_next += delta;
7195 cur_hdr->len += delta;
7196 http_msg_move_end(&txn->rsp, delta);
7197 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7198 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7199 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7200 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7201 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7202 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7203 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7204 * with this server since we know it.
7205 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7206 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7207 next += delta;
7208 hdr_end += delta;
7209 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7210 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7211 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7212
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7213 txn->flags &= ~TX_SCK_MASK;
7214 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7215 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7216 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7217 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7218 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7219 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7220 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7221 next += delta;
7222 hdr_end += delta;
7223 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7224 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7225 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7226
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7227 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7228 txn->flags &= ~TX_SCK_MASK;
7229 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7230 }
7231 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7232 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7233 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7234 int cmp_len, value_len;
7235 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7236
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7237 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7238 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7239 value_begin = att_beg + t->be->appsession_name_len;
7240 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]7241 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7242 cmp_len = att_end - att_beg;
7243 value_begin = val_beg;
7244 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7245 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7246
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7247 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7248 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7249 /* free a possibly previously allocated memory */
7250 pool_free2(apools.sessid, txn->sessid);
7251
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7252 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7253 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7254 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7255 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7256 return;
7257 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7258 memcpy(txn->sessid, value_begin, value_len);
7259 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7260 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7261 }
7262 /* that's done for this cookie, check the next one on the same
7263 * line when next != hdr_end (only if is_cookie2).
7264 */
7265 }
7266 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7267 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7268 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7269
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7270 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7271 appsess *asession = NULL;
7272 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7273 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7274 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7275 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7276 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7277 Alert("Not enough Memory process_srv():asession:calloc().\n");
7278 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7279 return;
7280 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7281 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7282
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7283 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7284 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7285 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]7286 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7287 return;
7288 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7289 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7290 asession->sessid[t->be->appsession_len] = 0;
7291
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7292 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7293 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7294 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7295 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]7296 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7297 return;
7298 }
7299 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7300 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7301
7302 asession->request_count = 0;
7303 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7304 }
7305
7306 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7307 asession->request_count++;
7308 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7309}
7310
7311
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7312/*
7313 * Check if response is cacheable or not. Updates t->flags.
7314 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7315void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7316{
7317 struct http_txn *txn = &t->txn;
7318 char *p1, *p2;
7319
7320 char *cur_ptr, *cur_end, *cur_next;
7321 int cur_idx;
7322
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7323 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7324 return;
7325
7326 /* Iterate through the headers.
7327 * we start with the start line.
7328 */
7329 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7330 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7331
7332 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7333 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7334 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7335
7336 cur_hdr = &txn->hdr_idx.v[cur_idx];
7337 cur_ptr = cur_next;
7338 cur_end = cur_ptr + cur_hdr->len;
7339 cur_next = cur_end + cur_hdr->cr + 1;
7340
7341 /* We have one full header between cur_ptr and cur_end, and the
7342 * next header starts at cur_next. We're only interested in
7343 * "Cookie:" headers.
7344 */
7345
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7346 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7347 if (val) {
7348 if ((cur_end - (cur_ptr + val) >= 8) &&
7349 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7350 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7351 return;
7352 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7353 }
7354
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7355 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7356 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7357 continue;
7358
7359 /* OK, right now we know we have a cache-control header at cur_ptr */
7360
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7361 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7362
7363 if (p1 >= cur_end) /* no more info */
7364 continue;
7365
7366 /* p1 is at the beginning of the value */
7367 p2 = p1;
7368
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7369 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7370 p2++;
7371
7372 /* we have a complete value between p1 and p2 */
7373 if (p2 < cur_end && *p2 == '=') {
7374 /* we have something of the form no-cache="set-cookie" */
7375 if ((cur_end - p1 >= 21) &&
7376 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7377 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7378 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7379 continue;
7380 }
7381
7382 /* OK, so we know that either p2 points to the end of string or to a comma */
7383 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7384 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7385 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7386 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7387 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7388 return;
7389 }
7390
7391 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7392 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7393 continue;
7394 }
7395 }
7396}
7397
7398
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7399/*
7400 * Try to retrieve a known appsession in the URI, then the associated server.
7401 * If the server is found, it's assigned to the session.
7402 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7403void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7404{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7405 char *end_params, *first_param, *cur_param, *next_param;
7406 char separator;
7407 int value_len;
7408
7409 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7410
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7411 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7412 (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]7413 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7414 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7415
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7416 first_param = NULL;
7417 switch (mode) {
7418 case PR_O2_AS_M_PP:
7419 first_param = memchr(begin, ';', len);
7420 break;
7421 case PR_O2_AS_M_QS:
7422 first_param = memchr(begin, '?', len);
7423 break;
7424 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7425
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7426 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7427 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7428 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7429
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7430 switch (mode) {
7431 case PR_O2_AS_M_PP:
7432 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7433 end_params = (char *) begin + len;
7434 }
7435 separator = ';';
7436 break;
7437 case PR_O2_AS_M_QS:
7438 end_params = (char *) begin + len;
7439 separator = '&';
7440 break;
7441 default:
7442 /* unknown mode, shouldn't happen */
7443 return;
7444 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7445
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7446 cur_param = next_param = end_params;
7447 while (cur_param > first_param) {
7448 cur_param--;
7449 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7450 /* let's see if this is the appsession parameter */
7451 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7452 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7453 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7454 /* Cool... it's the right one */
7455 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7456 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7457 if (value_len > 0) {
7458 manage_client_side_appsession(t, cur_param, value_len);
7459 }
7460 break;
7461 }
7462 next_param = cur_param;
7463 }
7464 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7465#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7466 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7467 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7468#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7469}
7470
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7471/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7472 * 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]7473 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7474 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7475 * 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]7476 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7477 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7478 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7479 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7480int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7481{
7482 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7483 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7484 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7485 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7486
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7487 if (!uri_auth)
7488 return 0;
7489
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7490 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]7491 return 0;
7492
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7493 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7494 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7495
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7496 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7497 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7498 return 0;
7499
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7500 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7501 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7502 return 0;
7503
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7504 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7505 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7506 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7507 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7508 break;
7509 }
7510 h++;
7511 }
7512
7513 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7514 h = uri + uri_auth->uri_len;
7515 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7516 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7517 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7518 break;
7519 }
7520 h++;
7521 }
7522 }
7523
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7524 h = uri + uri_auth->uri_len;
7525 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7526 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7527 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7528 break;
7529 }
7530 h++;
7531 }
7532
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7533 h = uri + uri_auth->uri_len;
7534 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7535 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7536 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7537 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7538 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7539 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7540 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7541 si->applet.ctx.stats.st_code = i;
7542 break;
7543 }
7544 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7545 break;
7546 }
7547 h++;
7548 }
7549
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7550 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7551
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7552 return 1;
7553}
7554
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7555/*
7556 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7557 * By default it tries to report the error position as msg->err_pos. However if
7558 * this one is not set, it will then report msg->next, which is the last known
7559 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7560 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7561 */
7562void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7563 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7564 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7565{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7566 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7567 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7568
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7569 es->len = MIN(chn->buf->i, sizeof(es->buf));
7570 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7571 len1 = MIN(len1, es->len);
7572 len2 = es->len - len1; /* remaining data if buffer wraps */
7573
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7574 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7575 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7576 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7577
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7578 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7579 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7580 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7581 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7582
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7583 es->when = date; // user-visible date
7584 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7585 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7586 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7587 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7588 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7589 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7590 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7591 es->s_flags = s->flags;
7592 es->t_flags = s->txn.flags;
7593 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7594 es->b_out = chn->buf->o;
7595 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7596 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7597 es->m_clen = msg->chunk_len;
7598 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7599}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7600
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7601/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7602 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7603 * performed over the whole headers. Otherwise it must contain a valid header
7604 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7605 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7606 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7607 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7608 * -1.
7609 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7610 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7611unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7612 struct hdr_idx *idx, int occ,
7613 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7614{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7615 struct hdr_ctx local_ctx;
7616 char *ptr_hist[MAX_HDR_HISTORY];
7617 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7618 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7619 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7620
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7621 if (!ctx) {
7622 local_ctx.idx = 0;
7623 ctx = &local_ctx;
7624 }
7625
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7626 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7627 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7628 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7629 occ--;
7630 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7631 *vptr = ctx->line + ctx->val;
7632 *vlen = ctx->vlen;
7633 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7634 }
7635 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7636 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7637 }
7638
7639 /* negative occurrence, we scan all the list then walk back */
7640 if (-occ > MAX_HDR_HISTORY)
7641 return 0;
7642
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7643 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7644 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7645 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7646 len_hist[hist_ptr] = ctx->vlen;
7647 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7648 hist_ptr = 0;
7649 found++;
7650 }
7651 if (-occ > found)
7652 return 0;
7653 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7654 * find occurrence -occ, so we have to check [hist_ptr+occ].
7655 */
7656 hist_ptr += occ;
7657 if (hist_ptr >= MAX_HDR_HISTORY)
7658 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7659 *vptr = ptr_hist[hist_ptr];
7660 *vlen = len_hist[hist_ptr];
7661 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7662}
7663
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7664/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7665 * Print a debug line with a header. Always stop at the first CR or LF char,
7666 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7667 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7668 */
7669void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7670{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7671 int max;
7672 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7673 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7674 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7675
7676 for (max = 0; start + max < end; max++)
7677 if (start[max] == '\r' || start[max] == '\n')
7678 break;
7679
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7680 UBOUND(max, trash.size - trash.len - 3);
7681 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7682 trash.str[trash.len++] = '\n';
7683 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7684}
7685
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7686/*
7687 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7688 * the required fields are properly allocated and that we only need to (re)init
7689 * them. This should be used before processing any new request.
7690 */
7691void http_init_txn(struct session *s)
7692{
7693 struct http_txn *txn = &s->txn;
7694 struct proxy *fe = s->fe;
7695
7696 txn->flags = 0;
7697 txn->status = -1;
7698
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7699 global.req_count++;
7700
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7701 txn->cookie_first_date = 0;
7702 txn->cookie_last_date = 0;
7703
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7704 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7705 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7706 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7707 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7708 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7709 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7710 txn->req.chunk_len = 0LL;
7711 txn->req.body_len = 0LL;
7712 txn->rsp.chunk_len = 0LL;
7713 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7714 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7715 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7716 txn->req.chn = s->req;
7717 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7718
7719 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7720
7721 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7722 if (fe->options2 & PR_O2_REQBUG_OK)
7723 txn->req.err_pos = -1; /* let buggy requests pass */
7724
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7725 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7726 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7727
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7728 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7729 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7730
7731 if (txn->hdr_idx.v)
7732 hdr_idx_init(&txn->hdr_idx);
7733}
7734
7735/* to be used at the end of a transaction */
7736void http_end_txn(struct session *s)
7737{
7738 struct http_txn *txn = &s->txn;
7739
7740 /* these ones will have been dynamically allocated */
7741 pool_free2(pool2_requri, txn->uri);
7742 pool_free2(pool2_capture, txn->cli_cookie);
7743 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7744 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7745 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7746
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7747 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7748 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7749 txn->uri = NULL;
7750 txn->srv_cookie = NULL;
7751 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7752
7753 if (txn->req.cap) {
7754 struct cap_hdr *h;
7755 for (h = s->fe->req_cap; h; h = h->next)
7756 pool_free2(h->pool, txn->req.cap[h->index]);
7757 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7758 }
7759
7760 if (txn->rsp.cap) {
7761 struct cap_hdr *h;
7762 for (h = s->fe->rsp_cap; h; h = h->next)
7763 pool_free2(h->pool, txn->rsp.cap[h->index]);
7764 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7765 }
7766
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7767}
7768
7769/* to be used at the end of a transaction to prepare a new one */
7770void http_reset_txn(struct session *s)
7771{
7772 http_end_txn(s);
7773 http_init_txn(s);
7774
7775 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7776 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7777 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7778 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7779 /* re-init store persistence */
7780 s->store_count = 0;
7781
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7782 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7783
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7784 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7785
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7786 /* We must trim any excess data from the response buffer, because we
7787 * may have blocked an invalid response from a server that we don't
7788 * want to accidentely forward once we disable the analysers, nor do
7789 * we want those data to come along with next response. A typical
7790 * example of such data would be from a buggy server responding to
7791 * a HEAD with some data, or sending more than the advertised
7792 * content-length.
7793 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7794 if (unlikely(s->rep->buf->i))
7795 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7796
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7797 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7798 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7799
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7800 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7801 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7802
7803 s->req->rex = TICK_ETERNITY;
7804 s->req->wex = TICK_ETERNITY;
7805 s->req->analyse_exp = TICK_ETERNITY;
7806 s->rep->rex = TICK_ETERNITY;
7807 s->rep->wex = TICK_ETERNITY;
7808 s->rep->analyse_exp = TICK_ETERNITY;
7809}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7810
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7811void free_http_req_rules(struct list *r) {
7812 struct http_req_rule *tr, *pr;
7813
7814 list_for_each_entry_safe(pr, tr, r, list) {
7815 LIST_DEL(&pr->list);
7816 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7817 free(pr->http_auth.realm);
7818
7819 free(pr);
7820 }
7821}
7822
7823struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7824{
7825 struct http_req_rule *rule;
7826 int cur_arg;
7827
7828 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7829 if (!rule) {
7830 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7831 return NULL;
7832 }
7833
7834 if (!*args[0]) {
7835 goto req_error_parsing;
7836 } else if (!strcmp(args[0], "allow")) {
7837 rule->action = HTTP_REQ_ACT_ALLOW;
7838 cur_arg = 1;
7839 } else if (!strcmp(args[0], "deny")) {
7840 rule->action = HTTP_REQ_ACT_DENY;
7841 cur_arg = 1;
7842 } else if (!strcmp(args[0], "auth")) {
7843 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7844 cur_arg = 1;
7845
7846 while(*args[cur_arg]) {
7847 if (!strcmp(args[cur_arg], "realm")) {
7848 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7849 cur_arg+=2;
7850 continue;
7851 } else
7852 break;
7853 }
7854 } else {
7855req_error_parsing:
7856 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7857 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7858 return NULL;
7859 }
7860
7861 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7862 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7863 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7864
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7865 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7866 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7867 file, linenum, args[0], errmsg);
7868 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7869 return NULL;
7870 }
7871 rule->cond = cond;
7872 }
7873 else if (*args[cur_arg]) {
7874 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7875 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7876 file, linenum, args[0], args[cur_arg]);
7877 return NULL;
7878 }
7879
7880 return rule;
7881}
7882
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7883/************************************************************************/
7884/* The code below is dedicated to ACL parsing and matching */
7885/************************************************************************/
7886
7887
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7888/* This function ensures that the prerequisites for an L7 fetch are ready,
7889 * which means that a request or response is ready. If some data is missing,
7890 * 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]7891 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7892 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7893 *
7894 * The function returns :
7895 * 0 if some data is missing or if the requested data cannot be fetched
7896 * -1 if it is certain that we'll never have any HTTP message there
7897 * 1 if an HTTP message is ready
7898 */
7899static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7900acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7901 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7902{
7903 struct http_txn *txn = l7;
7904 struct http_msg *msg = &txn->req;
7905
7906 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7907 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7908 */
7909
7910 if (unlikely(!s || !txn))
7911 return 0;
7912
7913 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7914 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7915
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7916 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7917 if (unlikely(!s->req))
7918 return 0;
7919
7920 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7921 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7922 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7923 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7924 return -1;
7925 }
7926
7927 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7928 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7929 http_msg_analyzer(msg, &txn->hdr_idx);
7930
7931 /* Still no valid request ? */
7932 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7933 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7934 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7935 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7936 return -1;
7937 }
7938 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7939 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7940 return 0;
7941 }
7942
7943 /* OK we just got a valid HTTP request. We have some minor
7944 * preparation to perform so that further checks can rely
7945 * on HTTP tests.
7946 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7947 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7948 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7949 s->flags |= SN_REDIRECTABLE;
7950
7951 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7952 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7953 return -1;
7954 }
7955 }
7956
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7957 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7958 return 0; /* data might have moved and indexes changed */
7959
7960 /* otherwise everything's ready for the request */
7961 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7962 else {
7963 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7964 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7965 return 0;
7966 }
7967
7968 /* everything's OK */
7969 return 1;
7970}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7971
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7972#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7973 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]7974
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7975#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7976 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]7977
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7978
7979/* 1. Check on METHOD
7980 * We use the pre-parsed method if it is known, and store its number as an
7981 * integer. If it is unknown, we use the pointer and the length.
7982 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7983static 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]7984{
7985 int len, meth;
7986
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7987 len = strlen(*text);
7988 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7989
7990 pattern->val.i = meth;
7991 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7992 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7993 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]7994 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7995 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7996 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7997 pattern->len = len;
7998 }
7999 return 1;
8000}
8001
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8002/* This function fetches the method of current HTTP request and stores
8003 * it in the global pattern struct as a chunk. There are two possibilities :
8004 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8005 * in <len> and <ptr> is NULL ;
8006 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8007 * <len> to its length.
8008 * This is intended to be used with acl_match_meth() only.
8009 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8010static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8011acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8012 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8013{
8014 int meth;
8015 struct http_txn *txn = l7;
8016
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8017 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8018
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8019 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8020 smp->type = SMP_T_UINT;
8021 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8022 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8023 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8024 /* ensure the indexes are not affected */
8025 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8026 smp->type = SMP_T_CSTR;
8027 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8028 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8029 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8030 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8031 return 1;
8032}
8033
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8034/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8035static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8036{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8037 int icase;
8038
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8039
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8040 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8041 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8042 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8043 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8044 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8045 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8046
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8047 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8048 if (pattern->val.i != HTTP_METH_OTHER)
8049 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8050
8051 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8052 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8053 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8054
8055 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8056 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8057 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8058 return ACL_PAT_FAIL;
8059 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8060}
8061
8062/* 2. Check on Request/Status Version
8063 * We simply compare strings here.
8064 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8065static 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]8066{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8067 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8068 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8069 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8070 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8071 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8072 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8073 return 1;
8074}
8075
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8076static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8077acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8078 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8079{
8080 struct http_txn *txn = l7;
8081 char *ptr;
8082 int len;
8083
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8084 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8085
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8086 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8087 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8088
8089 while ((len-- > 0) && (*ptr++ != '/'));
8090 if (len <= 0)
8091 return 0;
8092
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8093 smp->type = SMP_T_CSTR;
8094 smp->data.str.str = ptr;
8095 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8096
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8097 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8098 return 1;
8099}
8100
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8101static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8102acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8103 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8104{
8105 struct http_txn *txn = l7;
8106 char *ptr;
8107 int len;
8108
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8109 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8110
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8111 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8112 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8113
8114 while ((len-- > 0) && (*ptr++ != '/'));
8115 if (len <= 0)
8116 return 0;
8117
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8118 smp->type = SMP_T_CSTR;
8119 smp->data.str.str = ptr;
8120 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8121
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8122 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8123 return 1;
8124}
8125
8126/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8127static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8128acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8129 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8130{
8131 struct http_txn *txn = l7;
8132 char *ptr;
8133 int len;
8134
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8135 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8136
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8137 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8138 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8139
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8140 smp->type = SMP_T_UINT;
8141 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8142 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8143 return 1;
8144}
8145
8146/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8147static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8148smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8149 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8150{
8151 struct http_txn *txn = l7;
8152
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8153 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8154
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8155 smp->type = SMP_T_CSTR;
8156 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8157 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8158 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8159 return 1;
8160}
8161
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8162static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8163smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8164 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8165{
8166 struct http_txn *txn = l7;
8167
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8168 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8169
8170 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8171 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8172 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8173 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8174 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8175 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8176
8177 /*
8178 * If we are parsing url in frontend space, we prepare backend stage
8179 * to not parse again the same url ! optimization lazyness...
8180 */
8181 if (px->options & PR_O_HTTP_PROXY)
8182 l4->flags |= SN_ADDR_SET;
8183
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8184 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8185 return 1;
8186}
8187
8188static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8189smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8190 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8191{
8192 struct http_txn *txn = l7;
8193
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8194 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8195
8196 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8197 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]8198 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8199 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]8200
8201 if (px->options & PR_O_HTTP_PROXY)
8202 l4->flags |= SN_ADDR_SET;
8203
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8204 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8205 return 1;
8206}
8207
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8208/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8209 * Accepts an optional argument of type string containing the header field name,
8210 * and an optional argument of type signed or unsigned integer to request an
8211 * explicit occurrence of the header. Note that in the event of a missing name,
8212 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8213 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8214static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8215smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8216 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8217{
8218 struct http_txn *txn = l7;
8219 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8220 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8221 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]8222 int occ = 0;
8223 const char *name_str = NULL;
8224 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8225
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8226 if (args) {
8227 if (args[0].type != ARGT_STR)
8228 return 0;
8229 name_str = args[0].data.str.str;
8230 name_len = args[0].data.str.len;
8231
8232 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8233 occ = args[1].data.uint;
8234 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8235
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8236 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8237
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8238 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8239 /* search for header from the beginning */
8240 ctx->idx = 0;
8241
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8242 if (!occ && !(opt & SMP_OPT_ITERATE))
8243 /* no explicit occurrence and single fetch => last header by default */
8244 occ = -1;
8245
8246 if (!occ)
8247 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8248 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8249
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8250 smp->type = SMP_T_CSTR;
8251 smp->flags |= SMP_F_VOL_HDR;
8252 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]8253 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8254
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8255 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8256 return 0;
8257}
8258
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8259/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8260 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8261 */
8262static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8263smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8264 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8265{
8266 struct http_txn *txn = l7;
8267 struct hdr_idx *idx = &txn->hdr_idx;
8268 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8269 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]8270 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8271
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8272 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8273 return 0;
8274
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8275 CHECK_HTTP_MESSAGE_FIRST();
8276
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8277 ctx.idx = 0;
8278 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8279 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]8280 cnt++;
8281
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8282 smp->type = SMP_T_UINT;
8283 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8284 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8285 return 1;
8286}
8287
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8288/* Fetch an HTTP header's integer value. The integer value is returned. It
8289 * takes a mandatory argument of type string and an optional one of type int
8290 * to designate a specific occurrence. It returns an unsigned integer, which
8291 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8292 */
8293static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8294smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8295 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8296{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8297 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8298
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8299 if (ret > 0) {
8300 smp->type = SMP_T_UINT;
8301 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8302 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8303
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8304 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8305}
8306
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8307/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8308 * and an optional one of type int to designate a specific occurrence.
8309 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8310 */
8311static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8312smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8313 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8314{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8315 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8316
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8317 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8318 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8319 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8320 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8321 } else {
8322 struct chunk *temp = sample_get_trash_chunk();
8323 if (smp->data.str.len < temp->size - 1) {
8324 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8325 temp->str[smp->data.str.len] = '\0';
8326 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8327 smp->type = SMP_T_IPV6;
8328 break;
8329 }
8330 }
8331 }
8332
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8333 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8334 if (!(smp->flags & SMP_F_NOT_LAST))
8335 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8336 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8337 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8338}
8339
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8340/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8341 * the first '/' after the possible hostname, and ends before the possible '?'.
8342 */
8343static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8344smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8345 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8346{
8347 struct http_txn *txn = l7;
8348 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8349
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8350 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8351
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8352 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]8353 ptr = http_get_path(txn);
8354 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8355 return 0;
8356
8357 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8358 smp->type = SMP_T_CSTR;
8359 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8360
8361 while (ptr < end && *ptr != '?')
8362 ptr++;
8363
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8364 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8365 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8366 return 1;
8367}
8368
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8369/* This produces a concatenation of the first occurrence of the Host header
8370 * followed by the path component if it begins with a slash ('/'). This means
8371 * that '*' will not be added, resulting in exactly the first Host entry.
8372 * If no Host header is found, then the path is returned as-is. The returned
8373 * value is stored in the trash so it does not need to be marked constant.
8374 */
8375static int
8376smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8377 const struct arg *args, struct sample *smp)
8378{
8379 struct http_txn *txn = l7;
8380 char *ptr, *end, *beg;
8381 struct hdr_ctx ctx;
8382
8383 CHECK_HTTP_MESSAGE_FIRST();
8384
8385 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8386 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]8387 !ctx.vlen)
8388 return smp_fetch_path(px, l4, l7, opt, args, smp);
8389
8390 /* 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]8391 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8392 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8393 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8394 smp->data.str.len = ctx.vlen;
8395
8396 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8397 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]8398 beg = http_get_path(txn);
8399 if (!beg)
8400 beg = end;
8401
8402 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8403
8404 if (beg < ptr && *beg == '/') {
8405 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8406 smp->data.str.len += ptr - beg;
8407 }
8408
8409 smp->flags = SMP_F_VOL_1ST;
8410 return 1;
8411}
8412
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8413static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8414acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8415 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8416{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8417 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8418 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8419 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8420
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8421 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8422
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8423 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8424 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8425 return 1;
8426}
8427
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8428/* return a valid test if the current request is the first one on the connection */
8429static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8430acl_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]8431 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8432{
8433 if (!s)
8434 return 0;
8435
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8436 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8437 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8438 return 1;
8439}
8440
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8441/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8442static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8443acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8444 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8445{
8446
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8447 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8448 return 0;
8449
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8450 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8451
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8452 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8453 return 0;
8454
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8455 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8456 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]8457 return 1;
8458}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8459
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8460/* Accepts exactly 1 argument of type userlist */
8461static int
8462acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8463 const struct arg *args, struct sample *smp)
8464{
8465
8466 if (!args || args->type != ARGT_USR)
8467 return 0;
8468
8469 CHECK_HTTP_MESSAGE_FIRST();
8470
8471 if (!get_http_auth(l4))
8472 return 0;
8473
8474 /* acl_match_auth() will need several information at once */
8475 smp->ctx.a[0] = args->data.usr; /* user list */
8476 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8477 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8478
8479 /* if the user does not belong to the userlist or has a wrong password,
8480 * report that it unconditionally does not match. Otherwise we return
8481 * a non-zero integer which will be ignored anyway since all the params
8482 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8483 */
8484 smp->type = SMP_T_BOOL;
8485 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8486 if (smp->data.uint)
8487 smp->type = SMP_T_UINT;
8488
8489 return 1;
8490}
8491
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8492/* Try to find the next occurrence of a cookie name in a cookie header value.
8493 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8494 * the cookie value is returned into *value and *value_l, and the function
8495 * returns a pointer to the next pointer to search from if the value was found.
8496 * Otherwise if the cookie was not found, NULL is returned and neither value
8497 * nor value_l are touched. The input <hdr> string should first point to the
8498 * header's value, and the <hdr_end> pointer must point to the first character
8499 * not part of the value. <list> must be non-zero if value may represent a list
8500 * of values (cookie headers). This makes it faster to abort parsing when no
8501 * list is expected.
8502 */
8503static char *
8504extract_cookie_value(char *hdr, const char *hdr_end,
8505 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8506 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8507{
8508 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8509 char *next;
8510
8511 /* we search at least a cookie name followed by an equal, and more
8512 * generally something like this :
8513 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8514 */
8515 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8516 /* Iterate through all cookies on this line */
8517
8518 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8519 att_beg++;
8520
8521 /* find att_end : this is the first character after the last non
8522 * space before the equal. It may be equal to hdr_end.
8523 */
8524 equal = att_end = att_beg;
8525
8526 while (equal < hdr_end) {
8527 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8528 break;
8529 if (http_is_spht[(unsigned char)*equal++])
8530 continue;
8531 att_end = equal;
8532 }
8533
8534 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8535 * is between <att_beg> and <equal>, both may be identical.
8536 */
8537
8538 /* look for end of cookie if there is an equal sign */
8539 if (equal < hdr_end && *equal == '=') {
8540 /* look for the beginning of the value */
8541 val_beg = equal + 1;
8542 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8543 val_beg++;
8544
8545 /* find the end of the value, respecting quotes */
8546 next = find_cookie_value_end(val_beg, hdr_end);
8547
8548 /* make val_end point to the first white space or delimitor after the value */
8549 val_end = next;
8550 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8551 val_end--;
8552 } else {
8553 val_beg = val_end = next = equal;
8554 }
8555
8556 /* We have nothing to do with attributes beginning with '$'. However,
8557 * they will automatically be removed if a header before them is removed,
8558 * since they're supposed to be linked together.
8559 */
8560 if (*att_beg == '$')
8561 continue;
8562
8563 /* Ignore cookies with no equal sign */
8564 if (equal == next)
8565 continue;
8566
8567 /* Now we have the cookie name between att_beg and att_end, and
8568 * its value between val_beg and val_end.
8569 */
8570
8571 if (att_end - att_beg == cookie_name_l &&
8572 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8573 /* let's return this value and indicate where to go on from */
8574 *value = val_beg;
8575 *value_l = val_end - val_beg;
8576 return next + 1;
8577 }
8578
8579 /* Set-Cookie headers only have the name in the first attr=value part */
8580 if (!list)
8581 break;
8582 }
8583
8584 return NULL;
8585}
8586
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8587/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8588 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8589 * 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]8590 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8591 * 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]8592 * Accepts exactly 1 argument of type string. If the input options indicate
8593 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8594 */
8595static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8596smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8597 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8598{
8599 struct http_txn *txn = l7;
8600 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8601 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8602 const struct http_msg *msg;
8603 const char *hdr_name;
8604 int hdr_name_len;
8605 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8606 int occ = 0;
8607 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8608
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8609 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8610 return 0;
8611
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8612 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8613
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8614 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8615 msg = &txn->req;
8616 hdr_name = "Cookie";
8617 hdr_name_len = 6;
8618 } else {
8619 msg = &txn->rsp;
8620 hdr_name = "Set-Cookie";
8621 hdr_name_len = 10;
8622 }
8623
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8624 if (!occ && !(opt & SMP_OPT_ITERATE))
8625 /* no explicit occurrence and single fetch => last cookie by default */
8626 occ = -1;
8627
8628 /* OK so basically here, either we want only one value and it's the
8629 * last one, or we want to iterate over all of them and we fetch the
8630 * next one.
8631 */
8632
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8633 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8634 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8635 /* search for the header from the beginning, we must first initialize
8636 * the search parameters.
8637 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8638 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8639 ctx->idx = 0;
8640 }
8641
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8642 smp->flags |= SMP_F_VOL_HDR;
8643
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8644 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8645 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8646 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8647 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8648 goto out;
8649
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8650 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8651 continue;
8652
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8653 smp->ctx.a[0] = ctx->line + ctx->val;
8654 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8655 }
8656
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8657 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8658 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]8659 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8660 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8661 &smp->data.str.str,
8662 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8663 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8664 found = 1;
8665 if (occ >= 0) {
8666 /* one value was returned into smp->data.str.{str,len} */
8667 smp->flags |= SMP_F_NOT_LAST;
8668 return 1;
8669 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8670 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8671 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8672 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8673 /* all cookie headers and values were scanned. If we're looking for the
8674 * last occurrence, we may return it now.
8675 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8676 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8677 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8678 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8679}
8680
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8681/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8682 * 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]8683 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8684 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8685 */
8686static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8687acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8688 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8689{
8690 struct http_txn *txn = l7;
8691 struct hdr_idx *idx = &txn->hdr_idx;
8692 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8693 const struct http_msg *msg;
8694 const char *hdr_name;
8695 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8696 int cnt;
8697 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8698 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8699
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8700 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8701 return 0;
8702
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8703 CHECK_HTTP_MESSAGE_FIRST();
8704
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8705 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8706 msg = &txn->req;
8707 hdr_name = "Cookie";
8708 hdr_name_len = 6;
8709 } else {
8710 msg = &txn->rsp;
8711 hdr_name = "Set-Cookie";
8712 hdr_name_len = 10;
8713 }
8714
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8715 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8716 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8717 ctx.idx = 0;
8718 cnt = 0;
8719
8720 while (1) {
8721 /* Note: val_beg == NULL every time we need to fetch a new header */
8722 if (!val_beg) {
8723 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8724 break;
8725
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8726 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8727 continue;
8728
8729 val_beg = ctx.line + ctx.val;
8730 val_end = val_beg + ctx.vlen;
8731 }
8732
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8733 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8734 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8735 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8736 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8737 &smp->data.str.str,
8738 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8739 cnt++;
8740 }
8741 }
8742
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8743 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8744 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8745 return 1;
8746}
8747
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8748/* Fetch an cookie's integer value. The integer value is returned. It
8749 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8750 */
8751static int
8752smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8753 const struct arg *args, struct sample *smp)
8754{
8755 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8756
8757 if (ret > 0) {
8758 smp->type = SMP_T_UINT;
8759 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8760 }
8761
8762 return ret;
8763}
8764
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8765/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8766/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8767/************************************************************************/
8768
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8769/*
8770 * Given a path string and its length, find the position of beginning of the
8771 * query string. Returns NULL if no query string is found in the path.
8772 *
8773 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8774 *
8775 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8776 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8777static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8778{
8779 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8780
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8781 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8782 return p ? p + 1 : NULL;
8783}
8784
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8785static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8786{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8787 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8788}
8789
8790/*
8791 * Given a url parameter, find the starting position of the first occurence,
8792 * or NULL if the parameter is not found.
8793 *
8794 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8795 * the function will return query_string+8.
8796 */
8797static char*
8798find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8799 char* url_param_name, size_t url_param_name_l,
8800 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8801{
8802 char *pos, *last;
8803
8804 pos = query_string;
8805 last = query_string + query_string_l - url_param_name_l - 1;
8806
8807 while (pos <= last) {
8808 if (pos[url_param_name_l] == '=') {
8809 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8810 return pos;
8811 pos += url_param_name_l + 1;
8812 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8813 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8814 pos++;
8815 pos++;
8816 }
8817 return NULL;
8818}
8819
8820/*
8821 * Given a url parameter name, returns its value and size into *value and
8822 * *value_l respectively, and returns non-zero. If the parameter is not found,
8823 * zero is returned and value/value_l are not touched.
8824 */
8825static int
8826find_url_param_value(char* path, size_t path_l,
8827 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8828 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8829{
8830 char *query_string, *qs_end;
8831 char *arg_start;
8832 char *value_start, *value_end;
8833
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8834 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8835 if (!query_string)
8836 return 0;
8837
8838 qs_end = path + path_l;
8839 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8840 url_param_name, url_param_name_l,
8841 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8842 if (!arg_start)
8843 return 0;
8844
8845 value_start = arg_start + url_param_name_l + 1;
8846 value_end = value_start;
8847
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8848 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8849 value_end++;
8850
8851 *value = value_start;
8852 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8853 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8854}
8855
8856static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8857smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8858 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8859{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8860 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8861 struct http_txn *txn = l7;
8862 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8863
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8864 if (!args || args[0].type != ARGT_STR ||
8865 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8866 return 0;
8867
8868 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8869
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8870 if (args[1].type)
8871 delim = *args[1].data.str.str;
8872
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8873 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]8874 args->data.str.str, args->data.str.len,
8875 &smp->data.str.str, &smp->data.str.len,
8876 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8877 return 0;
8878
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8879 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8880 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8881 return 1;
8882}
8883
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8884/* Return the signed integer value for the specified url parameter (see url_param
8885 * above).
8886 */
8887static int
8888smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8889 const struct arg *args, struct sample *smp)
8890{
8891 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8892
8893 if (ret > 0) {
8894 smp->type = SMP_T_UINT;
8895 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8896 }
8897
8898 return ret;
8899}
8900
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8901/* This function is used to validate the arguments passed to any "hdr" fetch
8902 * keyword. These keywords support an optional positive or negative occurrence
8903 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8904 * is assumed that the types are already the correct ones. Returns 0 on error,
8905 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8906 * error message in case of error, that the caller is responsible for freeing.
8907 * The initial location must either be freeable or NULL.
8908 */
8909static int val_hdr(struct arg *arg, char **err_msg)
8910{
8911 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8912 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8913 return 0;
8914 }
8915 return 1;
8916}
8917
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8918/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8919/* All supported ACL keywords must be declared here. */
8920/************************************************************************/
8921
8922/* Note: must not be declared <const> as its list will be overwritten.
8923 * Please take care of keeping this list alphabetically sorted.
8924 */
8925static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8926 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8927 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8928 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8929 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8930 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8931 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8932 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8933 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8934
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8935 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8936 { "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]8937 { "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]8938 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8939 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8940 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8941 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8942 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8943 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8944 { "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]8945
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8946 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8947 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8948 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8949 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8950 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8951 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8952 { "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 },
8953 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8954 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8955 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8956 { "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]8957
8958 { "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]8959 { "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]8960 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8961
8962 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8963
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8964 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8965 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8966 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8967 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8968 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8969 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8970 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8971 { "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]8972
8973 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8974 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8975 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8976
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8977 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8978 { "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]8979 { "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]8980 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8981 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8982 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8983 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8984 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8985 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8986 { "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]8987
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8988 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8989 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8990 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8991 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8992 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8993 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8994 { "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 },
8995 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8996 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8997 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8998 { "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]8999
9000 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9001
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9002 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9003 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9004 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9005 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9006 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9007 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9008 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9009 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9010 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9011 { "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]9012
9013 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9014 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9015 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9016 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9017 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9018 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9019 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9020 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9021 { "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]9022 { "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]9023
9024 { NULL, NULL, NULL, NULL },
9025}};
9026
9027/************************************************************************/
9028/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9029/************************************************************************/
9030/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9031static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9032 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9033 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9034 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9035 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9036 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9037 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9038 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9039 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9040 { "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]9041 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9042}};
9043
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9044
9045__attribute__((constructor))
9046static void __http_protocol_init(void)
9047{
9048 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9049 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9050}
9051
9052
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9053/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9054 * Local variables:
9055 * c-indent-level: 8
9056 * c-basic-offset: 8
9057 * End:
9058 */